diff --git a/train/mermaid/hard/mermaid_103.mmd b/train/mermaid/hard/mermaid_103.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..71c37c64bc6a0da7e5ff42669dd72b0cb1b2d40f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_103.mmd
@@ -0,0 +1,109 @@
+graph LR
+    N0([start])
+    N1[Property Listing]
+    N2(HOA Management)
+    N3[Property Valuation]
+    N4{Maintenance Request}
+    N5{Zoning Compliance}
+    N6[[Building Permit Application]]
+    N7[/Virtual Tour Creation/]
+    N8([Buyer Inquiry])
+    N9(Open House Event)
+    N10[Property Insurance]
+    N11[[Site Visit Scheduling]]
+    N12[Land Acquisition]
+    N13(Agent Assignment)
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Property Appraisal
+        nest0_0[(Home Inspection)]
+        nest0_1(Tenant Screening)
+        nest0_2{Ownership Transfer}
+    end
+    subgraph Rental Agreement
+        nest1_0[(Title Check)]
+        nest1_1{Mortgage Application Assistance}
+        nest1_2[Market Trend Analysis]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> |yes| N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N8 -.-> nest0_0
+    nest0_2 --> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N13 -.-> nest1_0
+    nest1_2 -.-> N13
+    N6 -.-> S0
+    S0 --> N14
+    S0 --> N8
+    S0 -.-> N9
+    N11 -.-> S1
+    S1 -.-> N13
+    S1 --> N14
+    N2 -.-> M0
+    N1 --> M0
+    N0 --> M0
+    M0 -.-> N5
+    N0 --> |no| M1
+    N1 --> M1
+    N3 -.-> |yes| M1
+    M1 -.-> N5
+    style S0 fill:#FFCDD2,stroke:#F44336
+    style S1 fill:#FFFCE6,stroke:#FFF9AE
+    style M0 fill:#FFCDD2,stroke:#F44336
+    style M1 fill:#FFCDD2,stroke:#F44336
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFF9AE,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_104.mmd b/train/mermaid/hard/mermaid_104.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f4ec328a856c470411f91a43dcac52c8b3e24441
--- /dev/null
+++ b/train/mermaid/hard/mermaid_104.mmd
@@ -0,0 +1,154 @@
+graph TD
+    N0([start])
+    N1(HOA Management)
+    N2[[Commission Distribution]]
+    N3(Offer Submission)
+    N4(Property Listing)
+    N5(Property Valuation)
+    N6[(Tenant Screening)]
+    N7([Contract Review])
+    N8[[Virtual Tour Creation]]
+    N9[Open House Event]
+    N10[[Property Marketing]]
+    N11[Legal Verification]
+    N12([Property Appraisal])
+    N13[Building Permit Application]
+    N14{Ownership Transfer}
+    N15([Loan Pre_Approval])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Escrow Setup
+        nest0_0(Site Visit Scheduling)
+        nest0_1[Property Management]
+        nest0_2[[Property Insurance]]
+        nest0_3[/Eviction Process/]
+    end
+    subgraph Brokerage License Renewal
+        nest1_0(Rental Agreement)
+        nest1_1[/Commercial Lease Negotiation/]
+        nest1_2[Renovation Planning]
+    end
+    N0 --> |complies| N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N8 -.-> nest0_0
+    nest0_3 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N12 -.-> |finances| nest1_0
+    nest1_2 --> N6
+    N11 --> S0
+    S0 -.-> N15
+    S0 --> N13
+    N9 -.-> S1
+    S1 -.-> N12
+    S1 -.-> N15
+    S1 --> N11
+    N6 --> S2
+    S2 --> |inspects| N10
+    S2 --> N8
+    S2 --> N9
+    N1 --> M0
+    N3 -.-> M0
+    N2 --> M0
+    M0 --> N5
+    N0 --> M1
+    N1 --> |approves| M1
+    M1 --> N3
+    N0 --> M2
+    N1 --> M2
+    M2 --> N3
+    style N0 fill:#FFCCBC,stroke:#FF5722
+    style N1 fill:#E8EAF6,stroke:#7986CB
+    style N2 fill:#E8EAF6,stroke:#7986CB
+    style N3 fill:#FFDCD6,stroke:#FFB2A5
+    style N4 fill:#FFDCD6,stroke:#FFB2A5
+    style N5 fill:#FFDCD6,stroke:#FFB2A5
+    style N6 fill:#FFCCBC,stroke:#FF5722
+    style N7 fill:#E8EAF6,stroke:#7986CB
+    style N8 fill:#FFDCD6,stroke:#FFB2A5
+    style N9 fill:#E8EAF6,stroke:#7986CB
+    style N10 fill:#FFCCBC,stroke:#FF5722
+    style N11 fill:#FFCCBC,stroke:#FF5722
+    style N12 fill:#E8EAF6,stroke:#7986CB
+    style N13 fill:#FFCCBC,stroke:#FF5722
+    style N14 fill:#FFDCD6,stroke:#FFB2A5
+    style N15 fill:#E8EAF6,stroke:#7986CB
+    style S0 fill:#E8EAF6,stroke:#7986CB
+    style S1 fill:#FFCCBC,stroke:#FF5722
+    style S2 fill:#FFCCBC,stroke:#FF5722
+    style M0 fill:#E8EAF6,stroke:#7986CB
+    style M1 fill:#FFCCBC,stroke:#FF5722
+    style M2 fill:#E8EAF6,stroke:#7986CB
+    style nest0_0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_2 fill:#FFCCBC,stroke:#FF5722
+    style nest0_3 fill:#E8EAF6,stroke:#7986CB
+    style nest1_0 fill:#E8EAF6,stroke:#7986CB
+    style nest1_1 fill:#E8EAF6,stroke:#7986CB
+    style nest1_2 fill:#E8EAF6,stroke:#7986CB
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#7986CB,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_106.mmd b/train/mermaid/hard/mermaid_106.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..25a46b866706bc86a7e47f72eeb41d491eb33d55
--- /dev/null
+++ b/train/mermaid/hard/mermaid_106.mmd
@@ -0,0 +1,87 @@
+graph TD
+    N0([start])
+    N1{Disaster Relief Coordination}
+    N2[Crime Scene Analysis]
+    N3[[Resource Allocation]]
+    N4(Traffic Control)
+    N5[Crime Prevention Programs]
+    N6[K9 Unit Deployment]
+    N7{Shelter Setup}
+    N8[Cybersecurity Threat Response]
+    N9[Rescue Coordination]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Crowd Management
+        nest0_0[[Incident Command System Activation]]
+        nest0_1[First Aid Deployment]
+    end
+    subgraph Hazard Detection
+        nest1_0[/Surveillance Review/]
+        nest1_1[[Emergency Dispatch]]
+        nest1_2[Witness Interview]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    nest0_0 -.-> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 --> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N4 --> nest1_0
+    nest1_2 -.-> N8
+    N2 -.-> S0
+    S0 -.-> N6
+    S0 -.-> N5
+    S0 -.-> N9
+    N4 -.-> S1
+    S1 -.-> N9
+    S1 -.-> N8
+    N0 --> M0
+    N1 -.-> M0
+    M0 --> N7
+    N1 --> M1
+    N2 -.-> M1
+    M1 --> N5
+    style S0 fill:#F9FBE7,stroke:#C0CA33
+    style S1 fill:#FFFDE7,stroke:#FFF176
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    style M1 fill:#E0F7FA,stroke:#00BCD4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_108.mmd b/train/mermaid/hard/mermaid_108.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c12a0ca352f623b2d0f74b71878b5ec55e3718b5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_108.mmd
@@ -0,0 +1,158 @@
+graph TD
+    N0([start])
+    N1{Law Enforcement Database Check}
+    N2([Crime Prevention Programs])
+    N3(Traffic Control)
+    N4[(Fire Suppression)]
+    N5(Incident Reporting)
+    N6{Incident Command System Activation}
+    N7[Resource Allocation]
+    N8(Disaster Relief Coordination)
+    N9[(Shelter Setup)]
+    N10[/Public Safety Training/]
+    N11(Forensic Analysis)
+    N12[Evacuation Planning]
+    N13[/Crowd Management/]
+    N14(First Aid Deployment)
+    N15([Responder Alert])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Hazard Detection
+        nest0_0(Bomb Disposal)
+        nest0_1[(Inmate Transport)]
+        nest0_2[Patrol Scheduling]
+    end
+    subgraph Cybersecurity Threat Response
+        nest1_0[[Emergency Dispatch]]
+        nest1_1[[Post_Incident Review]]
+        nest1_2{Border Security}
+        nest1_3([SWAT Team Activation])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N2 --> nest0_0
+    nest0_2 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N11 -.-> nest1_0
+    nest1_3 --> N8
+    N8 --> S0
+    S0 --> N15
+    S0 --> N13
+    S0 -.-> N14
+    N3 -.-> S1
+    S1 -.-> N8
+    S1 -.-> N5
+    S1 --> N10
+    N2 --> S2
+    S2 --> N12
+    S2 --> N4
+    S2 --> N11
+    N5 --> M0
+    N3 -.-> M0
+    M0 --> N8
+    N3 -.-> M1
+    N0 --> M1
+    N2 -.-> M1
+    M1 -.-> N6
+    N4 --> M2
+    N8 --> M2
+    N5 -.-> M2
+    M2 --> N11
+    style N0 fill:#FFFDE7,stroke:#FBC02D
+    style N1 fill:#FFFDE7,stroke:#FBC02D
+    style N2 fill:#FFFDE7,stroke:#FBC02D
+    style N3 fill:#FFFDE7,stroke:#FBC02D
+    style N4 fill:#FFEBEB,stroke:#FFC2C2
+    style N5 fill:#FFFDE7,stroke:#FBC02D
+    style N6 fill:#CADEDE,stroke:#94C0C0
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style N8 fill:#FFEBEB,stroke:#FFC2C2
+    style N9 fill:#CADEDE,stroke:#94C0C0
+    style N10 fill:#CADEDE,stroke:#94C0C0
+    style N11 fill:#FFEBEB,stroke:#FFC2C2
+    style N12 fill:#FFEBEB,stroke:#FFC2C2
+    style N13 fill:#FFEBEB,stroke:#FFC2C2
+    style N14 fill:#FFEBEB,stroke:#FFC2C2
+    style N15 fill:#FFFDE7,stroke:#FBC02D
+    style S0 fill:#FFFDE7,stroke:#FBC02D
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style S2 fill:#FFFDE7,stroke:#FBC02D
+    style M0 fill:#CADEDE,stroke:#94C0C0
+    style M1 fill:#FFEBEB,stroke:#FFC2C2
+    style M2 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#CADEDE,stroke:#94C0C0
+    style nest0_2 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_1 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_2 fill:#CADEDE,stroke:#94C0C0
+    style nest1_3 fill:#FFEBEB,stroke:#FFC2C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_108.txt b/train/mermaid/hard/mermaid_108.txt
new file mode 100644
index 0000000000000000000000000000000000000000..63c6f87dc693f7d143639df4a46d6108c9b6258e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_108.txt
@@ -0,0 +1,47 @@
+<Bomb Disposal, connectedTo, Inmate Transport>
+<Bomb Disposal, partOf, Hazard Detection>
+<Border Security, connectedTo, SWAT Team Activation>
+<Border Security, partOf, Cybersecurity Threat Response>
+<Crime Prevention Programs, connectedTo, Bomb Disposal>
+<Crime Prevention Programs, connectedTo, Evacuation Planning>
+<Crime Prevention Programs, connectedTo, Fire Suppression>
+<Crime Prevention Programs, connectedTo, Forensic Analysis>
+<Crime Prevention Programs, connectedTo, Incident Command System Activation>
+<Crime Prevention Programs, connectedTo, Traffic Control>
+<Crowd Management, connectedTo, First Aid Deployment>
+<Disaster Relief Coordination, connectedTo, Crowd Management>
+<Disaster Relief Coordination, connectedTo, First Aid Deployment>
+<Disaster Relief Coordination, connectedTo, Forensic Analysis>
+<Disaster Relief Coordination, connectedTo, Responder Alert>
+<Disaster Relief Coordination, connectedTo, Shelter Setup>
+<Emergency Dispatch, connectedTo, Post_Incident Review>
+<Emergency Dispatch, partOf, Cybersecurity Threat Response>
+<Evacuation Planning, connectedTo, Crowd Management>
+<Fire Suppression, connectedTo, Forensic Analysis>
+<Fire Suppression, connectedTo, Incident Reporting>
+<First Aid Deployment, connectedTo, Responder Alert>
+<Forensic Analysis, connectedTo, Emergency Dispatch>
+<Forensic Analysis, connectedTo, Evacuation Planning>
+<Incident Command System Activation, connectedTo, Resource Allocation>
+<Incident Reporting, connectedTo, Disaster Relief Coordination>
+<Incident Reporting, connectedTo, Forensic Analysis>
+<Incident Reporting, connectedTo, Incident Command System Activation>
+<Inmate Transport, connectedTo, Patrol Scheduling>
+<Inmate Transport, partOf, Hazard Detection>
+<Law Enforcement Database Check, connectedTo, Crime Prevention Programs>
+<Patrol Scheduling, connectedTo, Incident Command System Activation>
+<Patrol Scheduling, partOf, Hazard Detection>
+<Post_Incident Review, connectedTo, Border Security>
+<Post_Incident Review, partOf, Cybersecurity Threat Response>
+<Public Safety Training, connectedTo, Forensic Analysis>
+<Resource Allocation, connectedTo, Disaster Relief Coordination>
+<SWAT Team Activation, connectedTo, Disaster Relief Coordination>
+<SWAT Team Activation, partOf, Cybersecurity Threat Response>
+<Shelter Setup, connectedTo, Public Safety Training>
+<Traffic Control, connectedTo, Disaster Relief Coordination>
+<Traffic Control, connectedTo, Fire Suppression>
+<Traffic Control, connectedTo, Incident Command System Activation>
+<Traffic Control, connectedTo, Incident Reporting>
+<Traffic Control, connectedTo, Public Safety Training>
+<start, connectedTo, Incident Command System Activation>
+<start, connectedTo, Law Enforcement Database Check>
diff --git a/train/mermaid/hard/mermaid_109.mmd b/train/mermaid/hard/mermaid_109.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..33d6e641415df1715fe5c12d0c8670d830801014
--- /dev/null
+++ b/train/mermaid/hard/mermaid_109.mmd
@@ -0,0 +1,118 @@
+graph TD
+    N0([start])
+    N1[Surveillance Review]
+    N2[(Incident Reporting)]
+    N3[[Hazard Detection]]
+    N4{Disaster Relief Coordination}
+    N5[Shelter Setup]
+    N6{Resource Allocation}
+    N7[(Border Security)]
+    N8{Hostage Negotiation}
+    N9[K9 Unit Deployment]
+    N10(Incident Command System Activation)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Forensic Analysis
+        nest0_0[(Drug Interdiction)]
+        nest0_1[SWAT Team Activation]
+        nest0_2{Emergency Medical Service}
+        nest0_3[Rescue Coordination]
+    end
+    subgraph Evidence Collection
+        nest1_0([Suspect Identification])
+        nest1_1[/Victim Support Services/]
+        nest1_2[(Evacuation Planning)]
+        nest1_3[Public Warning]
+    end
+    N0 --> |patrols| N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N6 -.-> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N3 --> nest1_0
+    nest1_3 -.-> N4
+    N2 --> S0
+    S0 --> N10
+    S0 --> N8
+    N5 -.-> S1
+    S1 -.-> N10
+    S1 --> N8
+    N4 --> M0
+    N3 -.-> M0
+    M0 -.-> N7
+    N2 -.-> M1
+    N0 --> M1
+    N1 -.-> M1
+    M1 -.-> N6
+    style N0 fill:#E0F7FA,stroke:#00BCD4
+    style N1 fill:#E0F7FA,stroke:#00BCD4
+    style N2 fill:#FAEBF3,stroke:#F7BEE0
+    style N3 fill:#FAEBF3,stroke:#F7BEE0
+    style N4 fill:#E0F7FA,stroke:#00BCD4
+    style N5 fill:#FAEBF3,stroke:#F7BEE0
+    style N6 fill:#E0F7FA,stroke:#00BCD4
+    style N7 fill:#D0EFEE,stroke:#73C6BC
+    style N8 fill:#E0F7FA,stroke:#00BCD4
+    style N9 fill:#E0F7FA,stroke:#00BCD4
+    style N10 fill:#D0EFEE,stroke:#73C6BC
+    style S0 fill:#D0EFEE,stroke:#73C6BC
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style M0 fill:#FAEBF3,stroke:#F7BEE0
+    style M1 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_2 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_3 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_2 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_3 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_109.txt b/train/mermaid/hard/mermaid_109.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ac91d3d3553c38625a984aec46506a9c76017a82
--- /dev/null
+++ b/train/mermaid/hard/mermaid_109.txt
@@ -0,0 +1,37 @@
+<Border Security, connectedTo, Hostage Negotiation>
+<Disaster Relief Coordination, connectedTo, Border Security>
+<Disaster Relief Coordination, connectedTo, Shelter Setup>
+<Drug Interdiction, connectedTo, SWAT Team Activation>
+<Drug Interdiction, partOf, Forensic Analysis>
+<Emergency Medical Service, connectedTo, Rescue Coordination>
+<Emergency Medical Service, partOf, Forensic Analysis>
+<Evacuation Planning, connectedTo, Public Warning>
+<Evacuation Planning, partOf, Evidence Collection>
+<Hazard Detection, connectedTo, Border Security>
+<Hazard Detection, connectedTo, Disaster Relief Coordination>
+<Hazard Detection, connectedTo, Suspect Identification>
+<Hostage Negotiation, connectedTo, K9 Unit Deployment>
+<Incident Reporting, connectedTo, Hazard Detection>
+<Incident Reporting, connectedTo, Hostage Negotiation>
+<Incident Reporting, connectedTo, Incident Command System Activation>
+<Incident Reporting, connectedTo, Resource Allocation>
+<K9 Unit Deployment, connectedTo, Incident Command System Activation>
+<Public Warning, connectedTo, Disaster Relief Coordination>
+<Public Warning, partOf, Evidence Collection>
+<Rescue Coordination, connectedTo, Incident Command System Activation>
+<Rescue Coordination, partOf, Forensic Analysis>
+<Resource Allocation, connectedTo, Border Security>
+<Resource Allocation, connectedTo, Drug Interdiction>
+<SWAT Team Activation, connectedTo, Emergency Medical Service>
+<SWAT Team Activation, partOf, Forensic Analysis>
+<Shelter Setup, connectedTo, Hostage Negotiation>
+<Shelter Setup, connectedTo, Incident Command System Activation>
+<Shelter Setup, connectedTo, Resource Allocation>
+<Surveillance Review, connectedTo, Incident Reporting>
+<Surveillance Review, connectedTo, Resource Allocation>
+<Suspect Identification, connectedTo, Victim Support Services>
+<Suspect Identification, partOf, Evidence Collection>
+<Victim Support Services, connectedTo, Evacuation Planning>
+<Victim Support Services, partOf, Evidence Collection>
+<start, connectedTo, Resource Allocation>
+<start, patrols, Surveillance Review>
diff --git a/train/mermaid/hard/mermaid_11.mmd b/train/mermaid/hard/mermaid_11.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..255eb5d11154f47f7d6b1de76b89b7a9e826595a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_11.mmd
@@ -0,0 +1,107 @@
+graph BT
+    N0([start])
+    N1([Lab Test])
+    N2[Patient Intake]
+    N3[(Genetic Counseling)]
+    N4[Patient Transfer]
+    N5(Triage)
+    N6{Diagnosis}
+    N7[Symptom Monitoring]
+    N8[Health Screening]
+    N9[Physical Examination]
+    N10[Case Review]
+    N11(Medical History)
+    N12[Telemedicine Consultation]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Pharmacy Order
+        nest0_0(Prescription)
+        nest0_1[Medication Dispensing]
+        nest0_2(Anesthesia Administration)
+        nest0_3[(Device Implantation)]
+    end
+    subgraph Imaging Scan
+        nest1_0[(Biopsy)]
+        nest1_1[/Referral/]
+        nest1_2{Clinical Trial}
+        nest1_3([Home Care Visit])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |yes| N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N4 --> nest0_0
+    nest0_3 -.-> N9
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N6 --> nest1_0
+    nest1_3 --> N8
+    N4 -.-> S0
+    S0 --> N6
+    S0 -.-> N10
+    S0 --> N7
+    N7 -.-> S1
+    S1 -.-> N11
+    S1 -.-> N9
+    S1 --> N10
+    N0 -.-> M0
+    N2 -.-> M0
+    M0 --> N4
+    N0 --> |yes| M1
+    N1 -.-> M1
+    M1 --> N3
+    style S0 fill:#FCE4EC,stroke:#F06292
+    style S1 fill:#FCE4EC,stroke:#F06292
+    style M0 fill:#E8F0EA,stroke:#92C79A
+    style M1 fill:#E8F0EA,stroke:#92C79A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#B0C5CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_114.txt b/train/mermaid/hard/mermaid_114.txt
new file mode 100644
index 0000000000000000000000000000000000000000..779a5ba0983efe45e59b8da9e55bf6a6578c9fe5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_114.txt
@@ -0,0 +1,45 @@
+<Animation Production, connectedTo, Budget Planning>
+<Audience Feedback, connectedTo, Scene Scheduling>
+<Audience Feedback, connectedTo, Special Effects Design>
+<Awards Ceremony Production, connectedTo, Footage Review>
+<Budget Planning, connectedTo, Merchandise Creation>
+<Costume Design, partOf, Lighting Setup>
+<Costume Design, yes, Film Festival Submission>
+<Film Distribution, partOf, Press Junket>
+<Film Distribution, yes, Script Writing>
+<Film Festival Submission, partOf, Lighting Setup>
+<Film Festival Submission, yes, Streaming Setup>
+<Footage Review, connectedTo, Location Scouting>
+<Footage Review, connectedTo, Sound Engineering>
+<Footage Review, yes, Location Scouting>
+<Game Development, connectedTo, Location Scouting>
+<Game Development, connectedTo, Visual Effects>
+<Intellectual Property Protection, connectedTo, Costume Design>
+<Intellectual Property Protection, partOf, Lighting Setup>
+<Location Scouting, connectedTo, Scene Shooting>
+<Marketing Campaign, connectedTo, Audience Feedback>
+<Merchandise Creation, connectedTo, Audience Feedback>
+<Merchandise Creation, connectedTo, Marketing Campaign>
+<Merchandise Creation, connectedTo, Special Effects Design>
+<Merchandise Creation, connectedTo, end>
+<Premiere Event, connectedTo, Animation Production>
+<Scene Scheduling, connectedTo, Film Distribution>
+<Scene Scheduling, partOf, Press Junket>
+<Scene Shooting, connectedTo, Streaming Setup>
+<Script Writing, connectedTo, Sound Engineering>
+<Script Writing, partOf, Press Junket>
+<Sound Engineering, connectedTo, Game Development>
+<Sound Engineering, connectedTo, Location Scouting>
+<Sound Engineering, connectedTo, Premiere Event>
+<Special Effects Design, connectedTo, Trailer Production>
+<Special Effects Design, connectedTo, end>
+<Sponsorship Acquisition, connectedTo, Animation Production>
+<Sponsorship Acquisition, connectedTo, Premiere Event>
+<Sponsorship Acquisition, connectedTo, Special Effects Design>
+<Sponsorship Acquisition, no, Marketing Campaign>
+<Streaming Setup, connectedTo, Sponsorship Acquisition>
+<Trailer Production, connectedTo, Intellectual Property Protection>
+<Trailer Production, partOf, Lighting Setup>
+<Visual Effects, connectedTo, Location Scouting>
+<start, connectedTo, Location Scouting>
+<start, no, Awards Ceremony Production>
diff --git a/train/mermaid/hard/mermaid_115.mmd b/train/mermaid/hard/mermaid_115.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..631fe9067bc7825d98926a5909ce6c33552b96e8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_115.mmd
@@ -0,0 +1,116 @@
+graph RL
+    N0([start])
+    N1[Budget Planning]
+    N2(Script Writing)
+    N3[Casting Call]
+    N4[[Animation Production]]
+    N5[(Awards Ceremony Production)]
+    N6[/Scene Scheduling/]
+    N7[Visual Effects]
+    N8[Ticketing Sales]
+    N9[Concert Promotion]
+    N10[Set Construction]
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Special Effects Design
+        nest0_0[/Scene Shooting/]
+        nest0_1{Stunt Coordination}
+        nest0_2[/Streaming Setup/]
+        nest0_3[Audience Feedback]
+    end
+    subgraph Lighting Setup
+        nest1_0(Intellectual Property Protection)
+        nest1_1[(Trailer Production)]
+        nest1_2{Broadcast Scheduling}
+        nest1_3(Sound Engineering)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 -.-> nest0_0
+    nest0_3 --> |develops| N7
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N9 --> |composes| nest1_0
+    nest1_3 --> |distributes| N7
+    N1 -.-> S1
+    S1 --> N9
+    S1 --> N6
+    S1 --> N8
+    N7 --> M0
+    N4 --> M0
+    N1 -.-> |protects| M0
+    M0 -.-> N10
+    N2 -.-> M1
+    N6 -.-> M1
+    N5 -.-> M1
+    N3 --> M1
+    M1 --> N8
+    style N0 fill:#EFEBE9,stroke:#A1887F
+    style N1 fill:#EFEBE9,stroke:#A1887F
+    style N2 fill:#EFEBE9,stroke:#A1887F
+    style N3 fill:#D0EFEE,stroke:#73C6BC
+    style N4 fill:#D0EFEE,stroke:#73C6BC
+    style N5 fill:#F8BBD0,stroke:#E91E63
+    style N6 fill:#D0EFEE,stroke:#73C6BC
+    style N7 fill:#EFEBE9,stroke:#A1887F
+    style N8 fill:#EFEBE9,stroke:#A1887F
+    style N9 fill:#EFEBE9,stroke:#A1887F
+    style N10 fill:#EFEBE9,stroke:#A1887F
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#F8BBD0,stroke:#E91E63
+    style M1 fill:#F8BBD0,stroke:#E91E63
+    style nest0_0 fill:#EFEBE9,stroke:#A1887F
+    style nest0_1 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_2 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_3 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_1 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_2 fill:#EFEBE9,stroke:#A1887F
+    style nest1_3 fill:#F8BBD0,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_116.mmd b/train/mermaid/hard/mermaid_116.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b8af48740ddd55f57365dd5844f643fd49d670a6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_116.mmd
@@ -0,0 +1,112 @@
+graph LR
+    N0([start])
+    N1(Editing Process)
+    N2(Licensing Approval)
+    N3[[Merchandise Creation]]
+    N4[Fan Engagement Strategy]
+    N5([Talent Management])
+    N6([Live Performance])
+    N7[Costume Design]
+    N8[[Trailer Production]]
+    N9(Visual Effects)
+    N10[Red Carpet Event]
+    N11{Location Scouting}
+    N12[[Audience Feedback]]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Awards Ceremony Production
+        nest0_0[Marketing Campaign]
+        nest0_1[Footage Review]
+    end
+    subgraph Game Development
+        nest1_0[[Streaming Setup]]
+        nest1_1[(Lighting Setup)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> |yes| N13
+    nest0_0 --> nest0_1
+    N2 --> nest0_0
+    nest0_1 --> N1
+    nest1_0 -.-> nest1_1
+    N10 -.-> nest1_0
+    nest1_1 -.-> N9
+    N1 -.-> S0
+    S0 -.-> |yes| N9
+    S0 -.-> N8
+    N0 -.-> S1
+    S1 -.-> N2
+    S1 --> N5
+    N5 --> S2
+    S2 --> N8
+    S2 -.-> N11
+    N5 --> |no| M0
+    N6 -.-> M0
+    N1 -.-> |no| M0
+    M0 --> N9
+    N0 -.-> M1
+    N3 -.-> M1
+    M1 -.-> N7
+    N4 -.-> M2
+    N9 -.-> M2
+    M2 -.-> N13
+    style S0 fill:#FCE4EC,stroke:#F06292
+    style S1 fill:#F1F8E9,stroke:#388E3C
+    style S2 fill:#FFF3E0,stroke:#FFA726
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style M2 fill:#F1F8E9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFA726,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_117.mmd b/train/mermaid/hard/mermaid_117.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6abc8e847a56e09df727aaa5b5923ea236e3c891
--- /dev/null
+++ b/train/mermaid/hard/mermaid_117.mmd
@@ -0,0 +1,123 @@
+graph RL
+    N0([start])
+    N1[Costume Design]
+    N2[(Ticketing Sales)]
+    N3[[Location Scouting]]
+    N4(Sponsorship Acquisition)
+    N5[/Set Construction/]
+    N6[Premiere Event]
+    N7[Broadcast Scheduling]
+    N8[/Post_Production Audio Mixing/]
+    N9([Footage Review])
+    N10[Film Festival Submission]
+    N11[Scene Scheduling]
+    N12[Awards Ceremony Production]
+    N13[/Live Performance/]
+    N14[/Merchandise Creation/]
+    N15{Budget Planning}
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Trailer Production
+        nest0_0(Audience Feedback)
+        nest0_1{Licensing Approval}
+        nest0_2[Press Junket]
+        nest0_3(Stunt Coordination)
+    end
+    subgraph Film Distribution
+        nest1_0[/Casting Call/]
+        nest1_1[(Marketing Campaign)]
+        nest1_2([Lighting Setup])
+        nest1_3[[Intellectual Property Protection]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> |yes| N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N11 -.-> nest0_0
+    nest0_3 -.-> N12
+    nest1_0 -.-> |no| nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N11 -.-> nest1_0
+    nest1_3 --> N6
+    N1 --> S0
+    S0 --> N14
+    S0 -.-> N9
+    N0 --> S1
+    S1 --> N13
+    S1 --> N7
+    S1 -.-> N15
+    N1 -.-> |no| M0
+    N2 --> M0
+    N0 --> M0
+    N3 -.-> M0
+    M0 --> N5
+    N1 --> M1
+    N3 -.-> |no| M1
+    N2 --> M1
+    M1 -.-> N7
+    style S0 fill:#C5CAE9,stroke:#3F51B5
+    style S1 fill:#E4E0DF,stroke:#BDAFA8
+    style M0 fill:#E4E0DF,stroke:#BDAFA8
+    style M1 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_119.txt b/train/mermaid/hard/mermaid_119.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3598b985b52e7166b1e1e717e0f31455719b148f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_119.txt
@@ -0,0 +1,31 @@
+<Audience Feedback, connectedTo, Concert Promotion>
+<Audience Feedback, partOf, Broadcast Scheduling>
+<Concert Promotion, connectedTo, Costume Design>
+<Concert Promotion, partOf, Broadcast Scheduling>
+<Costume Design, connectedTo, Lighting Setup>
+<Editing Process, connectedTo, Licensing Approval>
+<Editing Process, connectedTo, Red Carpet Event>
+<Editing Process, connectedTo, Visual Effects>
+<Film Distribution, connectedTo, Costume Design>
+<Film Distribution, partOf, Film Festival Submission>
+<Game Development, connectedTo, Editing Process>
+<Game Development, connectedTo, Red Carpet Event>
+<Licensing Approval, connectedTo, Costume Design>
+<Licensing Approval, connectedTo, Scene Scheduling>
+<Lighting Setup, connectedTo, Visual Effects>
+<Marketing Campaign, connectedTo, Audience Feedback>
+<Marketing Campaign, partOf, Broadcast Scheduling>
+<Merchandise Creation, connectedTo, Game Development>
+<Merchandise Creation, responds to, Red Carpet Event>
+<Music Composition, connectedTo, Film Distribution>
+<Music Composition, partOf, Film Festival Submission>
+<Red Carpet Event, connectedTo, Licensing Approval>
+<Red Carpet Event, connectedTo, Marketing Campaign>
+<Scene Scheduling, connectedTo, Music Composition>
+<Scene Scheduling, partOf, Film Festival Submission>
+<Ticketing Sales, connectedTo, Game Development>
+<Ticketing Sales, connectedTo, Licensing Approval>
+<Ticketing Sales, connectedTo, Merchandise Creation>
+<Ticketing Sales, connectedTo, Red Carpet Event>
+<Ticketing Sales, connectedTo, Visual Effects>
+<Ticketing Sales, mixes, Costume Design>
diff --git a/train/mermaid/hard/mermaid_12.mmd b/train/mermaid/hard/mermaid_12.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4632b5e1721135b83668fbcb7a22259c5b56cba0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_12.mmd
@@ -0,0 +1,138 @@
+graph TD
+    N0([Triage])
+    N1[(Follow_up)]
+    N2(Case Review)
+    N3[Imaging Scan]
+    N4[Symptom Monitoring]
+    N5[Lab Test]
+    N6[Rehabilitation Therapy]
+    N7(Allergy Test)
+    N8[(Medical Record Keeping)]
+    N9[(Medication Dispensing)]
+    N10[Prescription]
+    N11[Genetic Counseling]
+    N12[Biopsy]
+    N13{Epidemiological Tracking}
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Insurance Claim
+        nest0_0([Health Screening])
+        nest0_1([Dental Check_up])
+        nest0_2{Home Care Visit}
+        nest0_3[Pharmacy Order]
+    end
+    subgraph Patient Education
+        nest1_0([Nutritional Counseling])
+        nest1_1([Telemedicine Consultation])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> |counsels| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N9 --> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 --> nest1_1
+    N12 --> nest1_0
+    nest1_1 -.-> |scans| N2
+    N3 --> S0
+    S0 --> N8
+    S0 -.-> N7
+    S0 --> N5
+    N0 --> S1
+    S1 -.-> N5
+    S1 -.-> N13
+    S1 -.-> N3
+    N3 --> S2
+    S2 --> N6
+    S2 -.-> N5
+    S2 -.-> N14
+    N0 -.-> M0
+    N3 -.-> M0
+    M0 --> N7
+    N1 -.-> M1
+    N5 -.-> M1
+    M1 --> N10
+    style N0 fill:#FFE0B2,stroke:#FF9800
+    style N1 fill:#F8FDD3,stroke:#D3EB9F
+    style N2 fill:#FFE0B2,stroke:#FF9800
+    style N3 fill:#F9FBE7,stroke:#C0CA33
+    style N4 fill:#FFE0B2,stroke:#FF9800
+    style N5 fill:#F9FBE7,stroke:#C0CA33
+    style N6 fill:#F9FBE7,stroke:#C0CA33
+    style N7 fill:#F9FBE7,stroke:#C0CA33
+    style N8 fill:#FFE0B2,stroke:#FF9800
+    style N9 fill:#F9FBE7,stroke:#C0CA33
+    style N10 fill:#F9FBE7,stroke:#C0CA33
+    style N11 fill:#F8FDD3,stroke:#D3EB9F
+    style N12 fill:#FFE0B2,stroke:#FF9800
+    style N13 fill:#FFE0B2,stroke:#FF9800
+    style N14 fill:#F9FBE7,stroke:#C0CA33
+    style S0 fill:#F9FBE7,stroke:#C0CA33
+    style S1 fill:#F8FDD3,stroke:#D3EB9F
+    style S2 fill:#FFE0B2,stroke:#FF9800
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    style M1 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_1 fill:#FFE0B2,stroke:#FF9800
+    style nest0_2 fill:#FFE0B2,stroke:#FF9800
+    style nest0_3 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_1 fill:#F9FBE7,stroke:#C0CA33
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#C0CA33,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_120.mmd b/train/mermaid/hard/mermaid_120.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b23641658f50cca075fcfe8e186ab57100038c84
--- /dev/null
+++ b/train/mermaid/hard/mermaid_120.mmd
@@ -0,0 +1,142 @@
+graph RL
+    N0([Concert Promotion])
+    N1[/Casting Call/]
+    N2([Sound Engineering])
+    N3([Intellectual Property Protection])
+    N4(Footage Review)
+    N5[[Scene Scheduling]]
+    N6([Marketing Campaign])
+    N7[[Licensing Approval]]
+    N8[(Trailer Production)]
+    N9[/Editing Process/]
+    N10(Special Effects Design)
+    N11(Actor Rehearsal)
+    N12([Location Scouting])
+    N13([Talent Management])
+    N14[Stunt Coordination]
+    N15[Sponsorship Acquisition]
+    N16([Press Junket])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Visual Effects
+        nest0_0(Film Distribution)
+        nest0_1[(Streaming Setup)]
+    end
+    subgraph Lighting Setup
+        nest1_0[(Animation Production)]
+        nest1_1[(Script Writing)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> |screens| N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    N1 --> nest0_0
+    nest0_1 --> N9
+    nest1_0 --> nest1_1
+    N9 -.-> nest1_0
+    nest1_1 -.-> N4
+    N13 -.-> S0
+    S0 --> N16
+    S0 --> N15
+    N5 -.-> S1
+    S1 --> N14
+    S1 -.-> N12
+    N3 --> S2
+    S2 -.-> N7
+    S2 -.-> N12
+    N8 --> M0
+    N4 -.-> M0
+    N5 --> M0
+    M0 --> N10
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N3
+    N3 --> M2
+    N10 -.-> |preserves| M2
+    M2 --> N12
+    style N0 fill:#FAEBF3,stroke:#F7BEE0
+    style N1 fill:#FAEBF3,stroke:#F7BEE0
+    style N2 fill:#D7CCC8,stroke:#795548
+    style N3 fill:#B3E5FC,stroke:#03A9F4
+    style N4 fill:#D7CCC8,stroke:#795548
+    style N5 fill:#FAEBF3,stroke:#F7BEE0
+    style N6 fill:#D7CCC8,stroke:#795548
+    style N7 fill:#B3E5FC,stroke:#03A9F4
+    style N8 fill:#FAEBF3,stroke:#F7BEE0
+    style N9 fill:#D7CCC8,stroke:#795548
+    style N10 fill:#D7CCC8,stroke:#795548
+    style N11 fill:#B3E5FC,stroke:#03A9F4
+    style N12 fill:#B3E5FC,stroke:#03A9F4
+    style N13 fill:#FAEBF3,stroke:#F7BEE0
+    style N14 fill:#FAEBF3,stroke:#F7BEE0
+    style N15 fill:#D7CCC8,stroke:#795548
+    style N16 fill:#B3E5FC,stroke:#03A9F4
+    style S0 fill:#FAEBF3,stroke:#F7BEE0
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style S2 fill:#D7CCC8,stroke:#795548
+    style M0 fill:#B3E5FC,stroke:#03A9F4
+    style M1 fill:#D7CCC8,stroke:#795548
+    style M2 fill:#D7CCC8,stroke:#795548
+    style nest0_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#D7CCC8,stroke:#795548
+    style nest1_1 fill:#D7CCC8,stroke:#795548
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#795548,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_121.mmd b/train/mermaid/hard/mermaid_121.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..279f6cfedd4f2e719cc822b9282c762eb0ac4a8e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_121.mmd
@@ -0,0 +1,116 @@
+graph RL
+    N0([start])
+    N1(Pollution Control Technology)
+    N2[(Reforestation Planning)]
+    N3(Water Sampling)
+    N4[(Landfill Management)]
+    N5(Ecosystem Restoration)
+    N6[Sustainability Review]
+    N7[[Wildlife Survey]]
+    N8[/Hazardous Material Handling/]
+    N9[Energy Audit]
+    N10(Soil Testing)
+    N11[/Waste Collection/]
+    N12{Waste Water Treatment}
+    N13([Policy Advocacy])
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Resource Recovery
+        nest0_0{Regulatory Compliance}
+        nest0_1[(Citizen Science Initiative)]
+        nest0_2[/Coastal Erosion Control/]
+    end
+    subgraph Conservation Easement
+        nest1_0[Noise Pollution Measurement]
+        nest1_1([Renewable Energy Grid Integration])
+        nest1_2(Air Quality Monitoring)
+        nest1_3[Renewable Energy Project Development]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> |yes| N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> |yes| N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N6 --> nest0_0
+    nest0_2 --> N7
+    nest1_0 --> |no| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> N2
+    N7 -.-> S0
+    S0 -.-> N10
+    S0 -.-> N12
+    S0 --> N14
+    S0 -.-> |no| N9
+    N3 --> S1
+    S1 --> N10
+    S1 --> N9
+    S1 -.-> N14
+    N0 --> M0
+    N2 -.-> M0
+    N1 -.-> M0
+    M0 --> N4
+    N3 -.-> M1
+    N0 -.-> |no| M1
+    N1 --> |yes| M1
+    M1 -.-> N5
+    style S0 fill:#CFD8DC,stroke:#607D8B
+    style S1 fill:#FFEBEB,stroke:#FFC2C2
+    style M0 fill:#FFEBEB,stroke:#FFC2C2
+    style M1 fill:#FCE4EC,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#E91E63,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_121.txt b/train/mermaid/hard/mermaid_121.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5a772a1ac72633604c9e7e7fe7fb835107c64b68
--- /dev/null
+++ b/train/mermaid/hard/mermaid_121.txt
@@ -0,0 +1,43 @@
+<Air Quality Monitoring, connectedTo, Renewable Energy Project Development>
+<Air Quality Monitoring, partOf, Conservation Easement>
+<Citizen Science Initiative, connectedTo, Coastal Erosion Control>
+<Citizen Science Initiative, partOf, Resource Recovery>
+<Coastal Erosion Control, connectedTo, Wildlife Survey>
+<Coastal Erosion Control, partOf, Resource Recovery>
+<Ecosystem Restoration, connectedTo, Sustainability Review>
+<Energy Audit, yes, Soil Testing>
+<Hazardous Material Handling, connectedTo, Energy Audit>
+<Landfill Management, yes, Ecosystem Restoration>
+<Noise Pollution Measurement, no, Renewable Energy Grid Integration>
+<Noise Pollution Measurement, partOf, Conservation Easement>
+<Policy Advocacy, connectedTo, end>
+<Pollution Control Technology, connectedTo, Landfill Management>
+<Pollution Control Technology, connectedTo, Noise Pollution Measurement>
+<Pollution Control Technology, connectedTo, Reforestation Planning>
+<Pollution Control Technology, yes, Ecosystem Restoration>
+<Reforestation Planning, connectedTo, Landfill Management>
+<Reforestation Planning, connectedTo, Water Sampling>
+<Regulatory Compliance, connectedTo, Citizen Science Initiative>
+<Regulatory Compliance, partOf, Resource Recovery>
+<Renewable Energy Grid Integration, connectedTo, Air Quality Monitoring>
+<Renewable Energy Grid Integration, partOf, Conservation Easement>
+<Renewable Energy Project Development, connectedTo, Reforestation Planning>
+<Renewable Energy Project Development, partOf, Conservation Easement>
+<Soil Testing, connectedTo, Waste Collection>
+<Sustainability Review, connectedTo, Regulatory Compliance>
+<Sustainability Review, connectedTo, Wildlife Survey>
+<Waste Collection, connectedTo, Waste Water Treatment>
+<Waste Water Treatment, connectedTo, Policy Advocacy>
+<Water Sampling, connectedTo, Ecosystem Restoration>
+<Water Sampling, connectedTo, Energy Audit>
+<Water Sampling, connectedTo, Landfill Management>
+<Water Sampling, connectedTo, Soil Testing>
+<Water Sampling, connectedTo, end>
+<Wildlife Survey, connectedTo, Hazardous Material Handling>
+<Wildlife Survey, connectedTo, Soil Testing>
+<Wildlife Survey, connectedTo, Waste Water Treatment>
+<Wildlife Survey, connectedTo, end>
+<Wildlife Survey, no, Energy Audit>
+<start, connectedTo, Landfill Management>
+<start, connectedTo, Pollution Control Technology>
+<start, no, Ecosystem Restoration>
diff --git a/train/mermaid/hard/mermaid_125.mmd b/train/mermaid/hard/mermaid_125.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2cd0bd3f7bbc07efc82bf20f6c75584f43f0c12d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_125.mmd
@@ -0,0 +1,92 @@
+graph TD
+    N0([start])
+    N1([Air Quality Monitoring])
+    N2(Recycling Process)
+    N3(Environmental Research)
+    N4[(Biodiversity Conservation)]
+    N5(Emission Reporting)
+    N6[(Policy Advocacy)]
+    N7[(Climate Modeling)]
+    N8([Carbon Footprint Calculation])
+    S0(( ))
+    S2(( ))
+    subgraph Coastal Erosion Control
+        nest0_0[Energy Audit]
+        nest0_1[/Ocean Cleanup/]
+    end
+    subgraph Resource Tracking
+        nest1_0(Regulatory Compliance)
+        nest1_1(Pollution Control Technology)
+        nest1_2([Conservation Easement])
+        nest1_3[Green Certification]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> |surveys| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    nest0_0 --> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 -.-> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N1 --> nest1_0
+    nest1_3 --> N1
+    N4 --> S0
+    S0 -.-> N8
+    S0 -.-> |assesses| N7
+    N5 -.-> S2
+    S2 -.-> N8
+    S2 -.-> N7
+    nest1_0 --> N6
+    N4 --> N1
+    N4 -.-> nest0_0
+    N5 -.-> nest0_0
+    style N0 fill:#FFFCE6,stroke:#FFF9AE
+    style N1 fill:#FFFCE6,stroke:#FFF9AE
+    style N2 fill:#F8BBD0,stroke:#E91E63
+    style N3 fill:#F8BBD0,stroke:#E91E63
+    style N4 fill:#F1F8E9,stroke:#388E3C
+    style N5 fill:#F1F8E9,stroke:#388E3C
+    style N6 fill:#FFFCE6,stroke:#FFF9AE
+    style N7 fill:#F1F8E9,stroke:#388E3C
+    style N8 fill:#F8BBD0,stroke:#E91E63
+    style S0 fill:#F1F8E9,stroke:#388E3C
+    style S2 fill:#F8BBD0,stroke:#E91E63
+    style nest0_0 fill:#F1F8E9,stroke:#388E3C
+    style nest0_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_0 fill:#F8BBD0,stroke:#E91E63
+    style nest1_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_2 fill:#F8BBD0,stroke:#E91E63
+    style nest1_3 fill:#F1F8E9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_126.txt b/train/mermaid/hard/mermaid_126.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1a8ba196e40aee9b358416758e53ee5a5b4a3dc7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_126.txt
@@ -0,0 +1,37 @@
+<Conservation Easement, connectedTo, Soil Testing>
+<Conservation Easement, partOf, Environmental Impact Assessment>
+<Ecological Footprint Analysis, connectedTo, Hazardous Material Handling>
+<Ecological Footprint Analysis, partOf, Landfill Management>
+<Energy Audit, advocates, Waste Collection>
+<Energy Audit, connectedTo, Ecological Footprint Analysis>
+<Energy Audit, connectedTo, Noise Pollution Measurement>
+<Green Certification, connectedTo, Pollution Control Technology>
+<Green Certification, connectedTo, Stormwater Management>
+<Groundwater Monitoring, connectedTo, Carbon Footprint Calculation>
+<Hazardous Material Handling, connectedTo, Wildlife Survey>
+<Hazardous Material Handling, partOf, Landfill Management>
+<Noise Pollution Measurement, connectedTo, Waste Collection>
+<Ocean Cleanup, connectedTo, Groundwater Monitoring>
+<Pollution Alert, connectedTo, Conservation Easement>
+<Pollution Alert, partOf, Environmental Impact Assessment>
+<Pollution Control Technology, connectedTo, Resource Recovery>
+<Pollution Control Technology, connectedTo, Waste Collection>
+<Reforestation Planning, connectedTo, Soil Testing>
+<Reforestation Planning, connectedTo, Waste Collection>
+<Resource Recovery, connectedTo, Energy Audit>
+<Resource Tracking, connectedTo, Ocean Cleanup>
+<Resource Tracking, partOf, Landfill Management>
+<Soil Testing, advises, Carbon Footprint Calculation>
+<Soil Testing, connectedTo, Groundwater Monitoring>
+<Soil Testing, connectedTo, Species Reintroduction>
+<Soil Testing, connectedTo, Waste Collection>
+<Species Reintroduction, connectedTo, Green Certification>
+<Stormwater Management, enforces, Waste Water Treatment>
+<Stormwater Management, partOf, Environmental Impact Assessment>
+<Waste Collection, connectedTo, Groundwater Monitoring>
+<Waste Collection, connectedTo, Ocean Cleanup>
+<Waste Collection, incentivizes, Carbon Footprint Calculation>
+<Waste Water Treatment, connectedTo, Pollution Alert>
+<Waste Water Treatment, partOf, Environmental Impact Assessment>
+<Wildlife Survey, connectedTo, Resource Tracking>
+<Wildlife Survey, partOf, Landfill Management>
diff --git a/train/mermaid/hard/mermaid_129.mmd b/train/mermaid/hard/mermaid_129.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0edacba8f222f2707b3ef5804e8015311c3d920b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_129.mmd
@@ -0,0 +1,105 @@
+graph RL
+    N0([start])
+    N1[/Legislation Review/]
+    N2[/International Relations/]
+    N3[(Transparency Audit)]
+    N4[(Budget Allocation)]
+    N5(Data Publishing)
+    N6[(Election Management)]
+    N7[[Emergency Preparedness]]
+    N8[[Code Enforcement]]
+    N9[/Legal Advisory/]
+    N10[/Public Health Initiative/]
+    N11{Census Collection}
+    N12[Public Sector Procurement]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Service Registration
+        nest0_0[(Urban Planning)]
+        nest0_1{Veterans Affairs}
+        nest0_2{Policy Drafting}
+        nest0_3[Passport Issuance]
+    end
+    subgraph Vehicle Registration
+        nest1_0[Compliance Checking]
+        nest1_1[(Social Security Administration)]
+        nest1_2[Whistleblower Protection]
+        nest1_3{Interdepartmental Approval}
+    end
+    N0 --> |yes| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> |no| N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N8 --> nest0_0
+    nest0_3 -.-> |yes| N8
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N10 -.-> nest1_0
+    nest1_3 -.-> N1
+    N3 -.-> S0
+    S0 --> N11
+    S0 -.-> N7
+    N9 -.-> S1
+    S1 --> N12
+    S1 --> N11
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N3
+    N0 -.-> M2
+    N7 --> M2
+    N4 --> M2
+    M2 -.-> N11
+    style S0 fill:#ECCFF5,stroke:#CD8FF2
+    style S1 fill:#EDE7F6,stroke:#7E57C2
+    style M0 fill:#ECCFF5,stroke:#CD8FF2
+    style M2 fill:#FFFAE0,stroke:#FFE470
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFE470,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_130.mmd b/train/mermaid/hard/mermaid_130.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4ac5c7289d5efa0673b06fd26b4f5aa0520729a6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_130.mmd
@@ -0,0 +1,134 @@
+graph BT
+    N0([start])
+    N1[(Service Registration)]
+    N2(Open Government Data Initiative)
+    N3(Interdepartmental Approval)
+    N4[(Grant Distribution)]
+    N5[(National Defense)]
+    N6(ID Verification)
+    N7([Census Collection])
+    N8[Transparency Audit]
+    N9{Policy Drafting}
+    N10[Legislation Review]
+    N11[Public Health Initiative]
+    N12([Veterans Affairs])
+    N13{Compliance Checking}
+    N14(Legal Advisory)
+    N15([Permit Application])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Vehicle Registration
+        nest0_0[(Driver's License Renewal)]
+        nest0_1[Tax Filing]
+        nest0_2[(Public Works Maintenance)]
+        nest0_3[(Whistleblower Protection)]
+    end
+    subgraph Urban Planning
+        nest1_0[[Election Management]]
+        nest1_1(Emergency Preparedness)
+        nest1_2([Social Program Review])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N7 -.-> nest0_0
+    nest0_3 --> |responds| N14
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N10 --> nest1_0
+    nest1_2 --> N2
+    N11 -.-> S0
+    S0 --> |negotiates| N15
+    S0 --> N13
+    N7 --> S1
+    S1 --> N9
+    S1 -.-> N12
+    S1 -.-> N11
+    N12 -.-> S2
+    S2 --> N15
+    S2 --> |allocates| N14
+    N0 --> M1
+    N2 -.-> M1
+    M1 -.-> N14
+    style N0 fill:#BBDEFB,stroke:#2196F3
+    style N1 fill:#F3E5F5,stroke:#BA68C8
+    style N2 fill:#BBDEFB,stroke:#2196F3
+    style N3 fill:#F3E5F5,stroke:#BA68C8
+    style N4 fill:#F3E5F5,stroke:#BA68C8
+    style N5 fill:#CADEDE,stroke:#94C0C0
+    style N6 fill:#BBDEFB,stroke:#2196F3
+    style N7 fill:#BBDEFB,stroke:#2196F3
+    style N8 fill:#BBDEFB,stroke:#2196F3
+    style N9 fill:#CADEDE,stroke:#94C0C0
+    style N10 fill:#CADEDE,stroke:#94C0C0
+    style N11 fill:#CADEDE,stroke:#94C0C0
+    style N12 fill:#BBDEFB,stroke:#2196F3
+    style N13 fill:#F3E5F5,stroke:#BA68C8
+    style N14 fill:#BBDEFB,stroke:#2196F3
+    style N15 fill:#F3E5F5,stroke:#BA68C8
+    style S0 fill:#CADEDE,stroke:#94C0C0
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style S2 fill:#F3E5F5,stroke:#BA68C8
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#CADEDE,stroke:#94C0C0
+    style nest0_2 fill:#BBDEFB,stroke:#2196F3
+    style nest0_3 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_2 fill:#F3E5F5,stroke:#BA68C8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#2196F3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_132.mmd b/train/mermaid/hard/mermaid_132.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..deb14889ed260636bc77a513ece4aaa0eb0c61ea
--- /dev/null
+++ b/train/mermaid/hard/mermaid_132.mmd
@@ -0,0 +1,97 @@
+graph BT
+    N0([start])
+    N1{Diplomatic Negotiation}
+    N2[Social Security Administration]
+    N3[[Veterans Affairs]]
+    N4{Emergency Preparedness}
+    N5[(Legislation Review)]
+    N6{Social Program Review}
+    N7[Transparency Audit]
+    N8([Passport Issuance])
+    N9[Budget Allocation]
+    N10([Driver's License Renewal])
+    N11[[Whistleblower Protection]]
+    N12[Data Publishing]
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Census Collection
+        nest0_0[(Citizen Feedback)]
+        nest0_1[Compliance Checking]
+    end
+    subgraph International Relations
+        nest1_0{Public Consultation}
+        nest1_1[[ID Verification]]
+        nest1_2(Policy Drafting)
+        nest1_3[(Infrastructure Planning)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 -.-> N12
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 --> N12
+    N5 -.-> S1
+    S1 --> N8
+    S1 -.-> N12
+    N2 --> M0
+    N0 --> M0
+    M0 -.-> N4
+    N3 -.-> M1
+    N2 --> M1
+    M1 -.-> N6
+    N4 -.-> M2
+    N0 --> M2
+    M2 -.-> N8
+    style S1 fill:#F3E5F5,stroke:#BA68C8
+    style M0 fill:#FFFDE0,stroke:#FFF8A6
+    style M1 fill:#F3E5F5,stroke:#BA68C8
+    style M2 fill:#F3E5F5,stroke:#BA68C8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFF8A6,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_133.mmd b/train/mermaid/hard/mermaid_133.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..cfdfeee0241d4c1152564bcd664d7d8f7373d701
--- /dev/null
+++ b/train/mermaid/hard/mermaid_133.mmd
@@ -0,0 +1,126 @@
+graph BT
+    N0([Election Management])
+    N1{Legal Advisory}
+    N2{Data Publishing}
+    N3(National Defense)
+    N4(Emergency Preparedness)
+    N5{Grant Distribution}
+    N6(Transparency Audit)
+    N7[Passport Issuance]
+    N8([Social Program Review])
+    N9[Public Works Maintenance]
+    N10[Veterans Affairs]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Census Collection
+        nest0_0(Budget Allocation)
+        nest0_1[/Citizen Feedback/]
+        nest0_2[/Border Control/]
+        nest0_3{Compliance Checking}
+    end
+    subgraph Urban Planning
+        nest1_0[Code Enforcement]
+        nest1_1[Open Government Data Initiative]
+        nest1_2[Public Health Initiative]
+        nest1_3[(Vehicle Registration)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> |taxes| N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> |serves| N10
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N1 -.-> nest0_0
+    nest0_3 --> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N8 -.-> nest1_0
+    nest1_3 --> N2
+    N5 --> S0
+    S0 --> N10
+    S0 -.-> N7
+    S0 --> |funds| N8
+    N4 --> S1
+    S1 -.-> N6
+    S1 -.-> |secures| N7
+    N7 -.-> S2
+    S2 --> N10
+    S2 -.-> N9
+    N1 --> M0
+    N0 -.-> |negotiates| M0
+    M0 -.-> N3
+    N0 -.-> M1
+    N1 -.-> M1
+    M1 --> N3
+    style N0 fill:#FBE9E7,stroke:#FF8A65
+    style N1 fill:#D3F7F9,stroke:#80DDEA
+    style N2 fill:#FBE9E7,stroke:#FF8A65
+    style N3 fill:#FFDCD6,stroke:#FFB2A5
+    style N4 fill:#D3F7F9,stroke:#80DDEA
+    style N5 fill:#FBE9E7,stroke:#FF8A65
+    style N6 fill:#FBE9E7,stroke:#FF8A65
+    style N7 fill:#FBE9E7,stroke:#FF8A65
+    style N8 fill:#FBE9E7,stroke:#FF8A65
+    style N9 fill:#FFDCD6,stroke:#FFB2A5
+    style N10 fill:#FBE9E7,stroke:#FF8A65
+    style S0 fill:#D3F7F9,stroke:#80DDEA
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style S2 fill:#D3F7F9,stroke:#80DDEA
+    style M0 fill:#FBE9E7,stroke:#FF8A65
+    style M1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_2 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_3 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_0 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_2 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_3 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_134.txt b/train/mermaid/hard/mermaid_134.txt
new file mode 100644
index 0000000000000000000000000000000000000000..59b92938930f09ec497d91a37131f876f458fb3d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_134.txt
@@ -0,0 +1,42 @@
+<Border Control, connectedTo, Policy Drafting>
+<Budget Allocation, connectedTo, Infrastructure Planning>
+<Budget Allocation, connectedTo, Public Records Request>
+<Budget Allocation, connectedTo, Whistleblower Protection>
+<Citizen Feedback, connectedTo, Budget Allocation>
+<Citizen Feedback, connectedTo, Public Health Initiative>
+<Code Enforcement, connectedTo, Policy Drafting>
+<Code Enforcement, connectedTo, Vehicle Registration>
+<Data Publishing, collects, Open Government Data Initiative>
+<Data Publishing, connectedTo, Citizen Feedback>
+<Infrastructure Planning, connectedTo, Public Records Request>
+<Interdepartmental Approval, connectedTo, Legislation Review>
+<Interdepartmental Approval, partOf, Driver's License Renewal>
+<International Relations, connectedTo, Interdepartmental Approval>
+<International Relations, partOf, Driver's License Renewal>
+<Legal Advisory, connectedTo, Data Publishing>
+<Legislation Review, connectedTo, Passport Issuance>
+<Legislation Review, develops, International Relations>
+<Open Government Data Initiative, connectedTo, Citizen Feedback>
+<Open Government Data Initiative, connectedTo, Transparency Audit>
+<Passport Issuance, connectedTo, Grant Distribution>
+<Permit Application, connectedTo, Public Records Request>
+<Permit Application, partOf, National Defense>
+<Policy Drafting, connectedTo, Citizen Feedback>
+<Policy Drafting, connectedTo, Infrastructure Planning>
+<Policy Drafting, connectedTo, Legislation Review>
+<Policy Drafting, connectedTo, Passport Issuance>
+<Policy Drafting, connectedTo, Public Works Maintenance>
+<Public Health Initiative, funds, Public Sector Procurement>
+<Public Health Initiative, partOf, National Defense>
+<Public Records Request, connectedTo, Legislation Review>
+<Public Sector Procurement, issues, Tax Filing>
+<Public Sector Procurement, partOf, National Defense>
+<Public Works Maintenance, connectedTo, Legal Advisory>
+<Tax Filing, connectedTo, Permit Application>
+<Tax Filing, partOf, National Defense>
+<Transparency Audit, connectedTo, Citizen Feedback>
+<Vehicle Registration, connectedTo, Border Control>
+<Vehicle Registration, regulates, Policy Drafting>
+<Whistleblower Protection, audits, Infrastructure Planning>
+<Whistleblower Protection, connectedTo, Public Records Request>
+<Whistleblower Protection, researches, Passport Issuance>
diff --git a/train/mermaid/hard/mermaid_137.mmd b/train/mermaid/hard/mermaid_137.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..dec3e773cbfc8628457ed3162a9a41e8ebdcca51
--- /dev/null
+++ b/train/mermaid/hard/mermaid_137.mmd
@@ -0,0 +1,100 @@
+graph TD
+    N0([start])
+    N1[(Product Demonstration)]
+    N2([Shopping Cart Collection])
+    N3[Sales Forecasting]
+    N4(Order Fulfillment)
+    N5(Security Tagging)
+    N6[(Return Handling)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Price Tagging
+        nest0_0[/Customer Engagement/]
+        nest0_1[(Daily Report Generation)]
+        nest0_2(Supply Chain Optimization)
+        nest0_3([Warehouse Picking])
+    end
+    subgraph Loss Prevention
+        nest1_0([Supplier Coordination])
+        nest1_1[Payment Processing]
+        nest1_2(Online Order Pickup)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> |optimizes| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N5 --> nest0_0
+    nest0_3 -.-> N6
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N3 --> nest1_0
+    nest1_2 -.-> N2
+    N2 --> S0
+    S0 -.-> N6
+    S0 -.-> N5
+    S0 --> N4
+    N1 -.-> S1
+    S1 --> N4
+    S1 -.-> N3
+    N1 -.-> S2
+    S2 --> N6
+    S2 -.-> N3
+    S2 --> N4
+    N2 --> |scans| M2
+    N0 -.-> M2
+    M2 -.-> N5
+    style N0 fill:#F5F5F5,stroke:#BDBDBD
+    style N1 fill:#F1F8E9,stroke:#81C784
+    style N2 fill:#F5F5F5,stroke:#BDBDBD
+    style N3 fill:#F5F5F5,stroke:#BDBDBD
+    style N4 fill:#F1F8E9,stroke:#81C784
+    style N5 fill:#FFDAB9,stroke:#FFC085
+    style N6 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#F5F5F5,stroke:#BDBDBD
+    style S2 fill:#FFDAB9,stroke:#FFC085
+    style M2 fill:#FFDAB9,stroke:#FFC085
+    style nest0_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_1 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_2 fill:#FFDAB9,stroke:#FFC085
+    style nest0_3 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_0 fill:#F1F8E9,stroke:#81C784
+    style nest1_1 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_2 fill:#F1F8E9,stroke:#81C784
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#81C784,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_138.txt b/train/mermaid/hard/mermaid_138.txt
new file mode 100644
index 0000000000000000000000000000000000000000..604fc2eb900d1f12983d01b01d6170099de84c6e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_138.txt
@@ -0,0 +1,36 @@
+<Customer Checkout, connectedTo, Security Tagging>
+<Customer Engagement, connectedTo, Supply Chain Optimization>
+<Customer Engagement, connectedTo, Warehouse Picking>
+<Customer Loyalty Analytics, connectedTo, Inventory Check>
+<Customer Loyalty Analytics, partOf, Gift Wrapping>
+<Customer Survey, connectedTo, Receipt Issuing>
+<Customer Survey, tracks, Security Tagging>
+<E_commerce Platform Integration, connectedTo, Customer Survey>
+<Inventory Check, connectedTo, Receipt Issuing>
+<Inventory Check, partOf, Gift Wrapping>
+<Order Fulfillment, connectedTo, Customer Checkout>
+<Order Fulfillment, connectedTo, Security Tagging>
+<Product Demonstration, connectedTo, Customer Loyalty Analytics>
+<Product Demonstration, connectedTo, Product Listing>
+<Product Listing, connectedTo, Vendor Managed Inventory>
+<Receipt Issuing, connectedTo, Order Fulfillment>
+<Receipt Issuing, connectedTo, Product Listing>
+<Receipt Issuing, connectedTo, Security Tagging>
+<Seasonal Sales Planning, connectedTo, Stock Replenishment>
+<Seasonal Sales Planning, partOf, Daily Report Generation>
+<Security Tagging, connectedTo, Customer Engagement>
+<Security Tagging, connectedTo, Product Listing>
+<Security Tagging, connectedTo, Supplier Payment>
+<Security Tagging, connectedTo, Supply Chain Optimization>
+<Security Tagging, connectedTo, Vendor Managed Inventory>
+<Stock Replenishment, connectedTo, E_commerce Platform Integration>
+<Stock Replenishment, partOf, Daily Report Generation>
+<Supplier Payment, connectedTo, Product Demonstration>
+<Supplier Payment, connectedTo, Product Listing>
+<Supplier Payment, connectedTo, Vendor Managed Inventory>
+<Supply Chain Optimization, connectedTo, Product Listing>
+<Supply Chain Optimization, connectedTo, Supplier Payment>
+<Warehouse Picking, connectedTo, Seasonal Sales Planning>
+<Warehouse Picking, partOf, Daily Report Generation>
+<start, connectedTo, E_commerce Platform Integration>
+<start, connectedTo, Security Tagging>
diff --git a/train/mermaid/hard/mermaid_139.mmd b/train/mermaid/hard/mermaid_139.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..7474a603f73aa27cdc658ebe70bde388797a7e20
--- /dev/null
+++ b/train/mermaid/hard/mermaid_139.mmd
@@ -0,0 +1,126 @@
+graph RL
+    N0([start])
+    N1[Barcode Scanning]
+    N2[/Price Tagging/]
+    N3([E_commerce Platform Integration])
+    N4[/Point of Sale System Update/]
+    N5[(Security Tagging)]
+    N6[/Curbside Delivery/]
+    N7(Return Handling)
+    N8(Discount Application)
+    N9{Customer Survey}
+    N10(Customer Loyalty Analytics)
+    N11[Receipt Issuing]
+    N12{Store Layout Design}
+    N13(Staff Training)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Daily Report Generation
+        nest0_0([Gift Wrapping])
+        nest0_1(Online Order Pickup)
+        nest0_2(Vendor Managed Inventory)
+    end
+    subgraph Sales Forecasting
+        nest1_0[Customer Engagement]
+        nest1_1([Inventory Check])
+        nest1_2[(Product Demonstration)]
+        nest1_3[Stock Replenishment]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    nest0_0 --> |personalizes| nest0_1
+    nest0_1 -.-> nest0_2
+    N10 -.-> nest0_0
+    nest0_2 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> |supplies| nest1_3
+    N7 -.-> nest1_0
+    nest1_3 --> N3
+    N3 -.-> S0
+    S0 --> N8
+    S0 -.-> N13
+    S0 -.-> N12
+    N2 -.-> S1
+    S1 --> N9
+    S1 --> |processes| N4
+    N1 --> M0
+    N3 -.-> |promotes| M0
+    M0 --> N6
+    N3 --> M1
+    N2 -.-> |hires| M1
+    M1 -.-> N5
+    style N0 fill:#C8E6C9,stroke:#388E3C
+    style N1 fill:#D1C4E9,stroke:#673AB7
+    style N2 fill:#D1C4E9,stroke:#673AB7
+    style N3 fill:#C8E6C9,stroke:#388E3C
+    style N4 fill:#CFD8DC,stroke:#607D8B
+    style N5 fill:#D1C4E9,stroke:#673AB7
+    style N6 fill:#CFD8DC,stroke:#607D8B
+    style N7 fill:#CFD8DC,stroke:#607D8B
+    style N8 fill:#D1C4E9,stroke:#673AB7
+    style N9 fill:#C8E6C9,stroke:#388E3C
+    style N10 fill:#C8E6C9,stroke:#388E3C
+    style N11 fill:#C8E6C9,stroke:#388E3C
+    style N12 fill:#CFD8DC,stroke:#607D8B
+    style N13 fill:#C8E6C9,stroke:#388E3C
+    style S0 fill:#D1C4E9,stroke:#673AB7
+    style S1 fill:#C8E6C9,stroke:#388E3C
+    style M0 fill:#D1C4E9,stroke:#673AB7
+    style M1 fill:#C8E6C9,stroke:#388E3C
+    style nest0_0 fill:#C8E6C9,stroke:#388E3C
+    style nest0_1 fill:#C8E6C9,stroke:#388E3C
+    style nest0_2 fill:#CFD8DC,stroke:#607D8B
+    style nest1_0 fill:#CFD8DC,stroke:#607D8B
+    style nest1_1 fill:#D1C4E9,stroke:#673AB7
+    style nest1_2 fill:#D1C4E9,stroke:#673AB7
+    style nest1_3 fill:#C8E6C9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_140.mmd b/train/mermaid/hard/mermaid_140.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..940df3fa48b6c0af54ac715079ae34d07ea4ecc1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_140.mmd
@@ -0,0 +1,108 @@
+graph RL
+    N0([Stock Replenishment])
+    N1[Promotion Planning]
+    N2{Customer Loyalty Analytics}
+    N3[/Shelf Restocking/]
+    N4{Fitting Room Management}
+    N5(Supplier Coordination)
+    N6(Loss Prevention)
+    N7[Vendor Managed Inventory]
+    N8([Supplier Payment])
+    N9[[Customer Engagement]]
+    N10[/Return Handling/]
+    N11(Warehouse Picking)
+    N12([Product Listing])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Staff Training
+        nest0_0[[Inventory Check]]
+        nest0_1[[Seasonal Sales Planning]]
+        nest0_2(Receipt Issuing)
+    end
+    subgraph Shopping Cart Collection
+        nest1_0[Complaint Management]
+        nest1_1[[E_commerce Platform Integration]]
+    end
+    N0 --> N1
+    N1 -.-> |forecasts| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> |prices| N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> |restocks| N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N9 --> nest0_0
+    nest0_2 --> N11
+    nest1_0 -.-> nest1_1
+    N5 --> nest1_0
+    nest1_1 -.-> N8
+    N9 --> S0
+    S0 --> N12
+    S0 -.-> N11
+    N9 --> S1
+    S1 --> N11
+    S1 --> N12
+    N0 -.-> |delivers| M1
+    N2 --> |processes| M1
+    N1 -.-> |inventories| M1
+    N3 -.-> M1
+    M1 --> N6
+    style N0 fill:#DACBE3,stroke:#A188D0
+    style N1 fill:#DACBE3,stroke:#A188D0
+    style N2 fill:#FCE4EC,stroke:#F06292
+    style N3 fill:#DACBE3,stroke:#A188D0
+    style N4 fill:#FCE4EC,stroke:#F06292
+    style N5 fill:#C9F0F0,stroke:#4DD0E1
+    style N6 fill:#DACBE3,stroke:#A188D0
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style N8 fill:#FCE4EC,stroke:#F06292
+    style N9 fill:#DACBE3,stroke:#A188D0
+    style N10 fill:#FCE4EC,stroke:#F06292
+    style N11 fill:#FCE4EC,stroke:#F06292
+    style N12 fill:#FCE4EC,stroke:#F06292
+    style S0 fill:#C9F0F0,stroke:#4DD0E1
+    style S1 fill:#DACBE3,stroke:#A188D0
+    style M1 fill:#DACBE3,stroke:#A188D0
+    style nest0_0 fill:#FCE4EC,stroke:#F06292
+    style nest0_1 fill:#C9F0F0,stroke:#4DD0E1
+    style nest0_2 fill:#FCE4EC,stroke:#F06292
+    style nest1_0 fill:#C9F0F0,stroke:#4DD0E1
+    style nest1_1 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F06292,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_141.mmd b/train/mermaid/hard/mermaid_141.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ef598d6ba19735efa4c79434a857ff89c838c53a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_141.mmd
@@ -0,0 +1,132 @@
+graph LR
+    N0([Online Order Pickup])
+    N1([Product Listing])
+    N2[Self_Checkout Assistance]
+    N3(Customer Engagement)
+    N4[(E_commerce Platform Integration)]
+    N5[/Staff Training/]
+    N6[[Loss Prevention]]
+    N7(Sales Forecasting)
+    N8(Warehouse Picking)
+    N9[/Order Fulfillment/]
+    N10{Daily Report Generation}
+    N11(Discount Application)
+    N12(Point of Sale System Update)
+    N13{Loyalty Program Update}
+    N14{Promotion Planning}
+    N15(Gift Wrapping)
+    N16([Supplier Payment])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Customer Loyalty Analytics
+        nest0_0(Shelf Restocking)
+        nest0_1(Price Tagging)
+        nest0_2([Shopping Cart Collection])
+    end
+    subgraph Inventory Check
+        nest1_0{Return Handling}
+        nest1_1[[Customer Survey]]
+        nest1_2(Fitting Room Management)
+        nest1_3[[Receipt Issuing]]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> |markets| N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> |forecasts| N9
+    N9 --> |personalizes| N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N3 -.-> nest0_0
+    nest0_2 --> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N8 --> nest1_0
+    nest1_3 -.-> |complies| N9
+    N6 -.-> S0
+    S0 -.-> N8
+    S0 -.-> N10
+    S0 -.-> N14
+    N3 --> S1
+    S1 --> N10
+    S1 -.-> N9
+    N0 -.-> M1
+    N1 -.-> M1
+    N2 --> M1
+    M1 -.-> N4
+    style N0 fill:#F0F4C3,stroke:#AED581
+    style N1 fill:#DFE7EB,stroke:#B0C5CD
+    style N2 fill:#F5F5DC,stroke:#BCB88A
+    style N3 fill:#F5F5DC,stroke:#BCB88A
+    style N4 fill:#DFE7EB,stroke:#B0C5CD
+    style N5 fill:#DFE7EB,stroke:#B0C5CD
+    style N6 fill:#F0F4C3,stroke:#AED581
+    style N7 fill:#F0F4C3,stroke:#AED581
+    style N8 fill:#F5F5DC,stroke:#BCB88A
+    style N9 fill:#DFE7EB,stroke:#B0C5CD
+    style N10 fill:#F5F5DC,stroke:#BCB88A
+    style N11 fill:#DFE7EB,stroke:#B0C5CD
+    style N12 fill:#DFE7EB,stroke:#B0C5CD
+    style N13 fill:#F5F5DC,stroke:#BCB88A
+    style N14 fill:#F5F5DC,stroke:#BCB88A
+    style N15 fill:#F5F5DC,stroke:#BCB88A
+    style N16 fill:#DFE7EB,stroke:#B0C5CD
+    style S0 fill:#F0F4C3,stroke:#AED581
+    style S1 fill:#F5F5DC,stroke:#BCB88A
+    style M1 fill:#F0F4C3,stroke:#AED581
+    style nest0_0 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_1 fill:#F0F4C3,stroke:#AED581
+    style nest0_2 fill:#DFE7EB,stroke:#B0C5CD
+    style nest1_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_1 fill:#F0F4C3,stroke:#AED581
+    style nest1_2 fill:#F0F4C3,stroke:#AED581
+    style nest1_3 fill:#F0F4C3,stroke:#AED581
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#AED581,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_142.mmd b/train/mermaid/hard/mermaid_142.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..dd3e146dda006dac5eda1b1b1cf00350ebee9840
--- /dev/null
+++ b/train/mermaid/hard/mermaid_142.mmd
@@ -0,0 +1,122 @@
+graph TD
+    N0([Vendor Managed Inventory])
+    N1[Security Tagging]
+    N2[/Supplier Payment/]
+    N3(Receipt Issuing)
+    N4[(Price Tagging)]
+    N5[/Store Layout Design/]
+    N6[[Barcode Scanning]]
+    N7[Customer Loyalty Analytics]
+    N8(Online Order Pickup)
+    N9[[Shelf Restocking]]
+    N10([Supplier Coordination])
+    N11([Curbside Delivery])
+    N12[Loss Prevention]
+    N13([Self_Checkout Assistance])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Promotion Planning
+        nest0_0{Order Fulfillment}
+        nest0_1{Gift Wrapping}
+        nest0_2[Fitting Room Management]
+    end
+    subgraph Complaint Management
+        nest1_0([Supply Chain Optimization])
+        nest1_1[/Visual Merchandising/]
+        nest1_2([Product Listing])
+    end
+    N0 --> N1
+    N1 --> |complies| N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> |ships| N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N1 --> nest0_0
+    nest0_2 --> |analyzes| N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N3 -.-> nest1_0
+    nest1_2 -.-> |delivers| N7
+    N4 -.-> S0
+    S0 -.-> N11
+    S0 -.-> N7
+    N7 --> S1
+    S1 --> N10
+    S1 --> N12
+    S1 --> N13
+    N0 -.-> M0
+    N1 --> |scans| M0
+    M0 --> N4
+    N0 -.-> M2
+    N1 --> M2
+    M2 --> N5
+    style N0 fill:#C2E8E6,stroke:#61CAC3
+    style N1 fill:#C2E8E6,stroke:#61CAC3
+    style N2 fill:#D1C4E9,stroke:#7E57C2
+    style N3 fill:#C2E8E6,stroke:#61CAC3
+    style N4 fill:#D1C4E9,stroke:#7E57C2
+    style N5 fill:#D1C4E9,stroke:#7E57C2
+    style N6 fill:#C2E8E6,stroke:#61CAC3
+    style N7 fill:#D1C4E9,stroke:#7E57C2
+    style N8 fill:#E6EE9C,stroke:#CDDC39
+    style N9 fill:#D1C4E9,stroke:#7E57C2
+    style N10 fill:#E6EE9C,stroke:#CDDC39
+    style N11 fill:#C2E8E6,stroke:#61CAC3
+    style N12 fill:#C2E8E6,stroke:#61CAC3
+    style N13 fill:#E6EE9C,stroke:#CDDC39
+    style S0 fill:#D1C4E9,stroke:#7E57C2
+    style S1 fill:#C2E8E6,stroke:#61CAC3
+    style M0 fill:#E6EE9C,stroke:#CDDC39
+    style M2 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_0 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_1 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_2 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_1 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_2 fill:#D1C4E9,stroke:#7E57C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#61CAC3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_143.txt b/train/mermaid/hard/mermaid_143.txt
new file mode 100644
index 0000000000000000000000000000000000000000..39c9794f8f447d70bb27b73c8778ab8e8ba47183
--- /dev/null
+++ b/train/mermaid/hard/mermaid_143.txt
@@ -0,0 +1,43 @@
+<Barcode Scanning, connectedTo, Discount Application>
+<Customer Engagement, connectedTo, Warehouse Picking>
+<Customer Survey, connectedTo, Security Tagging>
+<Daily Report Generation, connectedTo, Loss Prevention>
+<Discount Application, connectedTo, Customer Survey>
+<Discount Application, connectedTo, Daily Report Generation>
+<Discount Application, connectedTo, Promotion Planning>
+<Discount Application, connectedTo, Shopping Cart Collection>
+<Discount Application, connectedTo, Supplier Coordination>
+<Discount Application, connectedTo, end>
+<Discount Application, packs, Promotion Planning>
+<Discount Application, reports, Inventory Check>
+<E_commerce Platform Integration, connectedTo, Seasonal Sales Planning>
+<E_commerce Platform Integration, partOf, Supply Chain Optimization>
+<Fitting Room Management, connectedTo, Daily Report Generation>
+<Fitting Room Management, connectedTo, Stock Replenishment>
+<Inventory Check, connectedTo, Fitting Room Management>
+<Inventory Check, connectedTo, end>
+<Loss Prevention, connectedTo, Shopping Cart Collection>
+<Loyalty Program Update, connectedTo, Seasonal Sales Planning>
+<Product Listing, connectedTo, Sales Forecasting>
+<Promotion Planning, connectedTo, Supplier Payment>
+<Sales Forecasting, connectedTo, Loyalty Program Update>
+<Seasonal Sales Planning, connectedTo, Daily Report Generation>
+<Seasonal Sales Planning, connectedTo, Store Layout Design>
+<Security Tagging, assists, Daily Report Generation>
+<Security Tagging, restocks, Visual Merchandising>
+<Shelf Restocking, connectedTo, Staff Training>
+<Shelf Restocking, partOf, Return Handling>
+<Shopping Cart Collection, connectedTo, Promotion Planning>
+<Staff Training, manages, end>
+<Staff Training, partOf, Return Handling>
+<Stock Replenishment, connectedTo, E_commerce Platform Integration>
+<Stock Replenishment, partOf, Supply Chain Optimization>
+<Store Layout Design, connectedTo, Supplier Coordination>
+<Supplier Coordination, connectedTo, Inventory Check>
+<Supplier Payment, connectedTo, end>
+<Visual Merchandising, connectedTo, Daily Report Generation>
+<Visual Merchandising, connectedTo, Fitting Room Management>
+<Visual Merchandising, connectedTo, Product Listing>
+<Visual Merchandising, wraps, Seasonal Sales Planning>
+<Warehouse Picking, connectedTo, Barcode Scanning>
+<Warehouse Picking, connectedTo, Shelf Restocking>
diff --git a/train/mermaid/hard/mermaid_144.mmd b/train/mermaid/hard/mermaid_144.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2acb52315f84e09ff55a90bc6fbb029d3e8d1c86
--- /dev/null
+++ b/train/mermaid/hard/mermaid_144.mmd
@@ -0,0 +1,144 @@
+graph RL
+    N0([Supplier Payment])
+    N1(Product Listing)
+    N2[(Complaint Management)]
+    N3{Inventory Check}
+    N4(Vendor Managed Inventory)
+    N5[(Loyalty Program Update)]
+    N6(Discount Application)
+    N7[Promotion Planning]
+    N8[Product Demonstration]
+    N9[Fitting Room Management]
+    N10[Customer Checkout]
+    N11[Stock Replenishment]
+    N12(Order Fulfillment)
+    N13(Price Tagging)
+    N14[/Daily Report Generation/]
+    N15(Customer Loyalty Analytics)
+    N16[(Loss Prevention)]
+    N17[/Self_Checkout Assistance/]
+    N18(Curbside Delivery)
+    N19{Security Tagging}
+    N20([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Customer Survey
+        nest0_0[Sales Forecasting]
+        nest0_1[(Warehouse Picking)]
+    end
+    subgraph Supplier Coordination
+        nest1_0(Point of Sale System Update)
+        nest1_1[Staff Training]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> |receives| N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> |discounts| N16
+    N16 --> N17
+    N17 -.-> N18
+    N18 -.-> N19
+    N19 -.-> N20
+    nest0_0 --> nest0_1
+    N11 --> nest0_0
+    nest0_1 -.-> N19
+    nest1_0 --> nest1_1
+    N7 -.-> |lists| nest1_0
+    nest1_1 --> N17
+    N5 -.-> S0
+    S0 -.-> N10
+    S0 -.-> N19
+    S0 -.-> N11
+    N14 -.-> S1
+    S1 --> |restocks| N16
+    S1 --> |assists| N17
+    N7 --> M0
+    N12 --> |wraps| M0
+    N4 -.-> M0
+    M0 -.-> N15
+    N11 -.-> M1
+    N9 -.-> M1
+    M1 --> N20
+    style N0 fill:#FCFCE7,stroke:#DCE775
+    style N1 fill:#FCE4EC,stroke:#F06292
+    style N2 fill:#FCE4EC,stroke:#F06292
+    style N3 fill:#FCFCE7,stroke:#DCE775
+    style N4 fill:#E8F0EA,stroke:#92C79A
+    style N5 fill:#FCE4EC,stroke:#F06292
+    style N6 fill:#FCFCE7,stroke:#DCE775
+    style N7 fill:#FCFCE7,stroke:#DCE775
+    style N8 fill:#E8F0EA,stroke:#92C79A
+    style N9 fill:#FCE4EC,stroke:#F06292
+    style N10 fill:#FCFCE7,stroke:#DCE775
+    style N11 fill:#FCFCE7,stroke:#DCE775
+    style N12 fill:#FCFCE7,stroke:#DCE775
+    style N13 fill:#FCE4EC,stroke:#F06292
+    style N14 fill:#FCFCE7,stroke:#DCE775
+    style N15 fill:#FCFCE7,stroke:#DCE775
+    style N16 fill:#FCE4EC,stroke:#F06292
+    style N17 fill:#FCFCE7,stroke:#DCE775
+    style N18 fill:#E8F0EA,stroke:#92C79A
+    style N19 fill:#E8F0EA,stroke:#92C79A
+    style N20 fill:#FCFCE7,stroke:#DCE775
+    style S0 fill:#FCE4EC,stroke:#F06292
+    style S1 fill:#E8F0EA,stroke:#92C79A
+    style M0 fill:#FCFCE7,stroke:#DCE775
+    style M1 fill:#FCFCE7,stroke:#DCE775
+    style nest0_0 fill:#FCE4EC,stroke:#F06292
+    style nest0_1 fill:#E8F0EA,stroke:#92C79A
+    style nest1_0 fill:#FCE4EC,stroke:#F06292
+    style nest1_1 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_145.mmd b/train/mermaid/hard/mermaid_145.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5f33664db9505442170e4baed8ff9e6509a7b21d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_145.mmd
@@ -0,0 +1,127 @@
+graph TD
+    N0([start])
+    N1([Oil Change])
+    N2[Tire Rotation]
+    N3[/Fluid Level Check/]
+    N4[(Recall Management)]
+    N5[Dealership Sales]
+    N6[(Software Calibration)]
+    N7(Warranty Activation)
+    N8[Maintenance Scheduling]
+    N9(Vehicle Design)
+    N10[/Crash Simulation/]
+    N11([Electric Vehicle Battery Production])
+    N12[[Fuel Efficiency Check]]
+    N13[(Paint Application)]
+    N14[Vehicle Financing]
+    N15[Parts Distribution]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Inventory Tracking
+        nest0_0{Global Supply Chain Management}
+        nest0_1[(Brake System Check)]
+    end
+    subgraph Body Shop Repair
+        nest1_0(Component Testing)
+        nest1_1[[Road Testing]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> |yes| N5
+    N5 --> |yes| N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> |no| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    N9 --> nest0_0
+    nest0_1 -.-> |no| N11
+    nest1_0 --> |yes| nest1_1
+    N11 -.-> nest1_0
+    nest1_1 -.-> N2
+    N9 -.-> S0
+    S0 -.-> N14
+    S0 -.-> N12
+    S0 --> N15
+    N3 --> S1
+    S1 --> N13
+    S1 -.-> N11
+    S1 --> N14
+    N13 --> S2
+    S2 -.-> N15
+    S2 --> N16
+    N7 -.-> M0
+    N10 --> M0
+    M0 -.-> N12
+    N2 -.-> M1
+    N4 --> M1
+    N7 --> M1
+    N5 -.-> M1
+    M1 --> N11
+    N2 --> M2
+    N1 -.-> M2
+    M2 --> N4
+    style S0 fill:#FFFDE7,stroke:#FBC02D
+    style S1 fill:#D7CCC8,stroke:#795548
+    style S2 fill:#D7CCC8,stroke:#795548
+    style M0 fill:#FFFDE7,stroke:#FBC02D
+    style M1 fill:#FFFDE7,stroke:#FBC02D
+    style M2 fill:#D7CCC8,stroke:#795548
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FBC02D,stroke-width:2px,fill:none;
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+    linkStyle 11 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#A1887F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_146.mmd b/train/mermaid/hard/mermaid_146.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f29718a969ead37889ac0888819759854300ae82
--- /dev/null
+++ b/train/mermaid/hard/mermaid_146.mmd
@@ -0,0 +1,102 @@
+graph LR
+    N0([Software Calibration])
+    N1([Parts Distribution])
+    N2(Research and Development)
+    N3[Vehicle Design]
+    N4[Quality Assurance]
+    N5{Vehicle Financing}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Dealership Sales
+        nest0_0{Engine Installation}
+        nest0_1[Robotics in Production]
+        nest0_2[(Fuel Efficiency Check)]
+        nest0_3[/Vehicle Connectivity/]
+    end
+    subgraph Electric Vehicle Battery Production
+        nest1_0[/Brake System Check/]
+        nest1_1(Fluid Level Check)
+        nest1_2[/Assembly Line Setup/]
+        nest1_3[Inventory Tracking]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N4 --> nest0_0
+    nest0_3 -.-> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N3 -.-> nest1_0
+    nest1_3 -.-> |maintains| N4
+    N2 --> S0
+    S0 -.-> N4
+    S0 --> N5
+    N2 -.-> S1
+    S1 -.-> N4
+    S1 --> N5
+    N0 -.-> S2
+    S2 --> |connects| N4
+    S2 --> N5
+    S2 --> N2
+    S2 -.-> N3
+    N0 --> M2
+    N2 --> M2
+    N1 --> M2
+    M2 -.-> N4
+    style N0 fill:#E0F7FA,stroke:#00BCD4
+    style N1 fill:#F0F0F0,stroke:#D2D2D2
+    style N2 fill:#FFFDE0,stroke:#FFF8A6
+    style N3 fill:#FFFDE0,stroke:#FFF8A6
+    style N4 fill:#FFFDE0,stroke:#FFF8A6
+    style N5 fill:#E0F7FA,stroke:#00BCD4
+    style S0 fill:#FFFDE0,stroke:#FFF8A6
+    style S1 fill:#E0F7FA,stroke:#00BCD4
+    style S2 fill:#FFFDE0,stroke:#FFF8A6
+    style M2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_1 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_2 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_3 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_1 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_3 fill:#F0F0F0,stroke:#D2D2D2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_149.mmd b/train/mermaid/hard/mermaid_149.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8627449419f8a5468813689c97b4a2a8f9a28720
--- /dev/null
+++ b/train/mermaid/hard/mermaid_149.mmd
@@ -0,0 +1,126 @@
+graph TD
+    N0([Road Testing])
+    N1(Vehicle Connectivity)
+    N2[Global Supply Chain Management]
+    N3([Autonomous Driving Software Development])
+    N4(Body Shop Repair)
+    N5([Supplier Selection])
+    N6[Robotics in Production]
+    N7{Engine Installation}
+    N8[[Oil Change]]
+    N9(Emission Testing)
+    N10[Inventory Tracking]
+    N11[(Brake System Check)]
+    N12([Component Testing])
+    N13[Dealership Sales]
+    N14[/Software Calibration/]
+    N15([Customer Relationship Management])
+    N16{Research and Development}
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Part Manufacturing
+        nest0_0[/Fuel Efficiency Check/]
+        nest0_1{Recall Management}
+    end
+    subgraph Parts Distribution
+        nest1_0([Infotainment System Integration])
+        nest1_1(Vehicle Registration)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> |engineers| N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> |delivers| N9
+    N9 --> |charges| N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> |replaces| N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> |upgrades| N16
+    N16 -.-> N17
+    nest0_0 --> nest0_1
+    N11 --> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 -.-> nest1_1
+    N6 --> nest1_0
+    nest1_1 -.-> |markets| N11
+    N8 -.-> S0
+    S0 -.-> N11
+    S0 -.-> N13
+    S0 -.-> N14
+    S0 -.-> N10
+    N14 --> S1
+    S1 --> N16
+    S1 -.-> N17
+    N13 -.-> |tests| M1
+    N11 --> M1
+    N9 --> M1
+    M1 --> N16
+    style N0 fill:#E4E0DF,stroke:#BDAFA8
+    style N1 fill:#E4E0DF,stroke:#BDAFA8
+    style N2 fill:#FFCCBC,stroke:#FF5722
+    style N3 fill:#EDE7F6,stroke:#7E57C2
+    style N4 fill:#FFCCBC,stroke:#FF5722
+    style N5 fill:#E4E0DF,stroke:#BDAFA8
+    style N6 fill:#EDE7F6,stroke:#7E57C2
+    style N7 fill:#E4E0DF,stroke:#BDAFA8
+    style N8 fill:#FFCCBC,stroke:#FF5722
+    style N9 fill:#E4E0DF,stroke:#BDAFA8
+    style N10 fill:#EDE7F6,stroke:#7E57C2
+    style N11 fill:#FFCCBC,stroke:#FF5722
+    style N12 fill:#EDE7F6,stroke:#7E57C2
+    style N13 fill:#EDE7F6,stroke:#7E57C2
+    style N14 fill:#FFCCBC,stroke:#FF5722
+    style N15 fill:#E4E0DF,stroke:#BDAFA8
+    style N16 fill:#E4E0DF,stroke:#BDAFA8
+    style N17 fill:#FFCCBC,stroke:#FF5722
+    style S0 fill:#E4E0DF,stroke:#BDAFA8
+    style S1 fill:#EDE7F6,stroke:#7E57C2
+    style M1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_0 fill:#EDE7F6,stroke:#7E57C2
+    style nest0_1 fill:#FFCCBC,stroke:#FF5722
+    style nest1_0 fill:#FFCCBC,stroke:#FF5722
+    style nest1_1 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF5722,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_15.mmd b/train/mermaid/hard/mermaid_15.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1d5c7f1871a9cd0140f5d09887085b3e7d2a4dab
--- /dev/null
+++ b/train/mermaid/hard/mermaid_15.mmd
@@ -0,0 +1,138 @@
+graph TD
+    N0([Follow_up])
+    N1(Mental Health Assessment)
+    N2{Medical History}
+    N3[[Patient Education]]
+    N4[Clinical Trial]
+    N5[Referral]
+    N6[[Rehabilitation Therapy]]
+    N7(Nutritional Counseling)
+    N8[[Wound Care]]
+    N9(Device Implantation)
+    N10[Surgery]
+    N11{Epidemiological Tracking}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Lab Test
+        nest0_0[[Health Screening]]
+        nest0_1[/Pharmacy Order/]
+        nest0_2[(Anesthesia Administration)]
+        nest0_3[[Insurance Claim]]
+    end
+    subgraph Home Care Visit
+        nest1_0[[Vaccination]]
+        nest1_1(Case Review)
+        nest1_2(Medication Dispensing)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> |refers| N8
+    N8 --> N9
+    N9 -.-> |treats| N10
+    N10 --> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N8 -.-> nest0_0
+    nest0_3 -.-> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N9 -.-> nest1_0
+    nest1_2 --> N6
+    N8 --> S0
+    S0 -.-> N11
+    S0 --> N10
+    N6 --> S1
+    S1 --> N9
+    S1 --> N8
+    S1 --> N10
+    N2 --> S2
+    S2 -.-> N11
+    S2 --> N6
+    S2 --> N9
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N3
+    N0 --> M1
+    N1 --> |reviews| M1
+    M1 --> N3
+    N1 --> M2
+    N2 --> M2
+    N3 -.-> M2
+    M2 --> N5
+    style N0 fill:#E0F7FA,stroke:#00BCD4
+    style N1 fill:#FBE9E7,stroke:#FF8A65
+    style N2 fill:#FBE9E7,stroke:#FF8A65
+    style N3 fill:#E1BEE7,stroke:#9C27B0
+    style N4 fill:#E0F7FA,stroke:#00BCD4
+    style N5 fill:#E0F7FA,stroke:#00BCD4
+    style N6 fill:#E0F7FA,stroke:#00BCD4
+    style N7 fill:#E1BEE7,stroke:#9C27B0
+    style N8 fill:#FBE9E7,stroke:#FF8A65
+    style N9 fill:#E1BEE7,stroke:#9C27B0
+    style N10 fill:#FBE9E7,stroke:#FF8A65
+    style N11 fill:#FBE9E7,stroke:#FF8A65
+    style S0 fill:#E0F7FA,stroke:#00BCD4
+    style S1 fill:#E1BEE7,stroke:#9C27B0
+    style S2 fill:#E1BEE7,stroke:#9C27B0
+    style M0 fill:#E0F7FA,stroke:#00BCD4
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    style M2 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_0 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_1 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_2 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_3 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_0 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_1 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_2 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#9C27B0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_15.txt b/train/mermaid/hard/mermaid_15.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d2eedef82bbd5ffa69d5584b3b418851bdc5625d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_15.txt
@@ -0,0 +1,41 @@
+<Anesthesia Administration, connectedTo, Insurance Claim>
+<Anesthesia Administration, partOf, Lab Test>
+<Case Review, connectedTo, Medication Dispensing>
+<Case Review, partOf, Home Care Visit>
+<Clinical Trial, connectedTo, Referral>
+<Device Implantation, connectedTo, Vaccination>
+<Device Implantation, treats, Surgery>
+<Follow_up, connectedTo, Mental Health Assessment>
+<Follow_up, connectedTo, Patient Education>
+<Health Screening, connectedTo, Pharmacy Order>
+<Health Screening, partOf, Lab Test>
+<Insurance Claim, connectedTo, Nutritional Counseling>
+<Insurance Claim, partOf, Lab Test>
+<Medical History, connectedTo, Device Implantation>
+<Medical History, connectedTo, Epidemiological Tracking>
+<Medical History, connectedTo, Patient Education>
+<Medical History, connectedTo, Referral>
+<Medical History, connectedTo, Rehabilitation Therapy>
+<Medication Dispensing, connectedTo, Rehabilitation Therapy>
+<Medication Dispensing, partOf, Home Care Visit>
+<Mental Health Assessment, connectedTo, Medical History>
+<Mental Health Assessment, connectedTo, Patient Education>
+<Mental Health Assessment, connectedTo, Referral>
+<Mental Health Assessment, reviews, Patient Education>
+<Nutritional Counseling, refers, Wound Care>
+<Patient Education, connectedTo, Clinical Trial>
+<Patient Education, connectedTo, Referral>
+<Pharmacy Order, connectedTo, Anesthesia Administration>
+<Pharmacy Order, partOf, Lab Test>
+<Referral, connectedTo, Rehabilitation Therapy>
+<Rehabilitation Therapy, connectedTo, Device Implantation>
+<Rehabilitation Therapy, connectedTo, Nutritional Counseling>
+<Rehabilitation Therapy, connectedTo, Surgery>
+<Rehabilitation Therapy, connectedTo, Wound Care>
+<Surgery, connectedTo, Epidemiological Tracking>
+<Vaccination, connectedTo, Case Review>
+<Vaccination, partOf, Home Care Visit>
+<Wound Care, connectedTo, Device Implantation>
+<Wound Care, connectedTo, Epidemiological Tracking>
+<Wound Care, connectedTo, Health Screening>
+<Wound Care, connectedTo, Surgery>
diff --git a/train/mermaid/hard/mermaid_150.txt b/train/mermaid/hard/mermaid_150.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fae4186bc99d7de5e0e71d82fdaec149c0c954aa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_150.txt
@@ -0,0 +1,41 @@
+<After_sales Service, connectedTo, Autonomous Driving Software Development>
+<After_sales Service, connectedTo, Research and Development>
+<After_sales Service, connectedTo, Tire Rotation>
+<After_sales Service, connectedTo, Vehicle Financing>
+<After_sales Service, connectedTo, end>
+<Autonomous Driving Software Development, connectedTo, Vehicle Financing>
+<Body Shop Repair, audits, end>
+<Body Shop Repair, connectedTo, After_sales Service>
+<Body Shop Repair, connectedTo, Dealership Sales>
+<Body Shop Repair, connectedTo, Tire Rotation>
+<Crash Simulation, connectedTo, Part Manufacturing>
+<Customer Test Drive, connectedTo, Dealership Sales>
+<Customer Test Drive, partOf, Engine Installation>
+<Dealership Sales, connectedTo, Parts Distribution>
+<Diagnostic Trouble Code Reading, connectedTo, Software Calibration>
+<Diagnostic Trouble Code Reading, partOf, Recall Management>
+<Fluid Level Check, connectedTo, Diagnostic Trouble Code Reading>
+<Fluid Level Check, partOf, Recall Management>
+<Oil Change, connectedTo, Vehicle Registration>
+<Part Manufacturing, connectedTo, Body Shop Repair>
+<Part Manufacturing, connectedTo, end>
+<Parts Distribution, connectedTo, After_sales Service>
+<Parts Distribution, connectedTo, Oil Change>
+<Research and Development, connectedTo, end>
+<Research and Development, upgrades, Tire Rotation>
+<Software Calibration, connectedTo, Warranty Activation>
+<Software Calibration, connectedTo, end>
+<Spare Parts Order, connectedTo, Customer Test Drive>
+<Spare Parts Order, partOf, Engine Installation>
+<Tire Rotation, connectedTo, Autonomous Driving Software Development>
+<Vehicle Financing, connectedTo, Software Calibration>
+<Vehicle Registration, connectedTo, After_sales Service>
+<Vehicle Registration, engineers, Spare Parts Order>
+<Warranty Activation, maintains, Fluid Level Check>
+<Warranty Activation, partOf, Recall Management>
+<start, connectedTo, After_sales Service>
+<start, connectedTo, Crash Simulation>
+<start, connectedTo, Tire Rotation>
+<start, connectedTo, Vehicle Financing>
+<start, connectedTo, Vehicle Registration>
+<start, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_151.mmd b/train/mermaid/hard/mermaid_151.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f04debd258ff1df19b8e4a02dad75112082d2ea0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_151.mmd
@@ -0,0 +1,120 @@
+graph RL
+    N0([start])
+    N1[Research and Development]
+    N2(Autonomous Driving Software Development)
+    N3(Quality Assurance)
+    N4{Infotainment System Integration}
+    N5{Robotics in Production}
+    N6([Diagnostic Trouble Code Reading])
+    N7[Crash Simulation]
+    N8[Vehicle Connectivity]
+    N9[[Oil Change]]
+    N10([After_sales Service])
+    N11[[Engine Installation]]
+    N12[[Vehicle Registration]]
+    N13[[Brake System Check]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    subgraph Supplier Selection
+        nest0_0(Dealership Sales)
+        nest0_1[Component Testing]
+        nest0_2[[Customer Test Drive]]
+    end
+    subgraph Vehicle Design
+        nest1_0(Spare Parts Order)
+        nest1_1[Tire Rotation]
+        nest1_2[Part Manufacturing]
+        nest1_3[(Electric Vehicle Battery Production)]
+    end
+    N0 --> N1
+    N1 --> |fuels| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> |replaces| N6
+    N6 --> N7
+    N7 --> |calibrates| N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> |audits| N13
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N1 -.-> nest0_0
+    nest0_2 --> N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N7 -.-> nest1_0
+    nest1_3 -.-> N9
+    N1 -.-> S0
+    S0 -.-> N13
+    S0 -.-> N6
+    N4 -.-> S1
+    S1 -.-> N11
+    S1 --> |inspects| N7
+    S1 --> N6
+    N9 -.-> S2
+    S2 --> N12
+    S2 --> N13
+    S2 -.-> N11
+    style N0 fill:#FFEBEB,stroke:#FFC2C2
+    style N1 fill:#E8EAF6,stroke:#5C6BC0
+    style N2 fill:#D1C4E9,stroke:#7E57C2
+    style N3 fill:#FFEBEB,stroke:#FFC2C2
+    style N4 fill:#D1C4E9,stroke:#7E57C2
+    style N5 fill:#FFEBEB,stroke:#FFC2C2
+    style N6 fill:#D1C4E9,stroke:#7E57C2
+    style N7 fill:#E8EAF6,stroke:#5C6BC0
+    style N8 fill:#FFEBEB,stroke:#FFC2C2
+    style N9 fill:#D1C4E9,stroke:#7E57C2
+    style N10 fill:#E8EAF6,stroke:#5C6BC0
+    style N11 fill:#D1C4E9,stroke:#7E57C2
+    style N12 fill:#D1C4E9,stroke:#7E57C2
+    style N13 fill:#D1C4E9,stroke:#7E57C2
+    style S0 fill:#FFEBEB,stroke:#FFC2C2
+    style S1 fill:#E8EAF6,stroke:#5C6BC0
+    style S2 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_0 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_1 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_2 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_0 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_1 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_2 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_3 fill:#D1C4E9,stroke:#7E57C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#5C6BC0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_153.mmd b/train/mermaid/hard/mermaid_153.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..74a43c41f50f98a7c391dbd0a46c42192c829e69
--- /dev/null
+++ b/train/mermaid/hard/mermaid_153.mmd
@@ -0,0 +1,150 @@
+graph TD
+    N0([start])
+    N1[(Air Traffic Control Integration)]
+    N2[Aircraft Manufacturing]
+    N3([Rocket Assembly])
+    N4[Satellite Configuration]
+    N5{Launch Window Calculation}
+    N6[(Spacecraft Telemetry Analysis)]
+    N7([Astronaut Training])
+    N8{Flight Crew Training}
+    N9{Drone System Development}
+    N10(Orbit Adjustment)
+    N11(Aircraft Maintenance Log)
+    N12[New Material Development]
+    N13[Re_entry Vehicle Design]
+    N14[/Mission Planning/]
+    N15[(Fueling Procedure)]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Launch Execution
+        nest0_0[International Space Station Resupply]
+        nest0_1[(Space Debris Tracking)]
+    end
+    subgraph Flight Simulation
+        nest1_0[(Data Transmission)]
+        nest1_1(Structural Analysis)
+        nest1_2[Mission Debriefing]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    N5 -.-> nest0_0
+    nest0_1 -.-> N14
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N14 -.-> nest1_0
+    nest1_2 --> N15
+    N9 --> S0
+    S0 -.-> N12
+    S0 -.-> N15
+    N4 -.-> S1
+    S1 -.-> N14
+    S1 --> N9
+    S1 -.-> N11
+    N13 -.-> S2
+    S2 --> N15
+    S2 -.-> N16
+    N6 -.-> M0
+    N5 --> M0
+    M0 --> N13
+    N3 --> M1
+    N4 -.-> M1
+    N1 --> M1
+    M1 --> N6
+    N2 -.-> M2
+    N7 --> M2
+    N9 -.-> M2
+    M2 -.-> N11
+    style N0 fill:#E0E6E9,stroke:#AABEC6
+    style N1 fill:#EFEBE9,stroke:#A1887F
+    style N2 fill:#EFEBE9,stroke:#A1887F
+    style N3 fill:#EFEBE9,stroke:#A1887F
+    style N4 fill:#E0E6E9,stroke:#AABEC6
+    style N5 fill:#F0F4C3,stroke:#AED581
+    style N6 fill:#EFEBE9,stroke:#A1887F
+    style N7 fill:#E0E6E9,stroke:#AABEC6
+    style N8 fill:#F0F4C3,stroke:#AED581
+    style N9 fill:#F0F4C3,stroke:#AED581
+    style N10 fill:#EFEBE9,stroke:#A1887F
+    style N11 fill:#EFEBE9,stroke:#A1887F
+    style N12 fill:#E0E6E9,stroke:#AABEC6
+    style N13 fill:#E0E6E9,stroke:#AABEC6
+    style N14 fill:#EFEBE9,stroke:#A1887F
+    style N15 fill:#E0E6E9,stroke:#AABEC6
+    style N16 fill:#EFEBE9,stroke:#A1887F
+    style S0 fill:#EFEBE9,stroke:#A1887F
+    style S1 fill:#F0F4C3,stroke:#AED581
+    style S2 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#F0F4C3,stroke:#AED581
+    style M1 fill:#F0F4C3,stroke:#AED581
+    style M2 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_0 fill:#F0F4C3,stroke:#AED581
+    style nest0_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_0 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_1 fill:#F0F4C3,stroke:#AED581
+    style nest1_2 fill:#E0E6E9,stroke:#AABEC6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#AED581,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_153.txt b/train/mermaid/hard/mermaid_153.txt
new file mode 100644
index 0000000000000000000000000000000000000000..48b70b58670b127e63537b874fa91c93bd695a88
--- /dev/null
+++ b/train/mermaid/hard/mermaid_153.txt
@@ -0,0 +1,43 @@
+<Air Traffic Control Integration, connectedTo, Aircraft Manufacturing>
+<Air Traffic Control Integration, connectedTo, Spacecraft Telemetry Analysis>
+<Aircraft Maintenance Log, connectedTo, New Material Development>
+<Aircraft Manufacturing, connectedTo, Aircraft Maintenance Log>
+<Aircraft Manufacturing, connectedTo, Rocket Assembly>
+<Astronaut Training, connectedTo, Aircraft Maintenance Log>
+<Astronaut Training, connectedTo, Flight Crew Training>
+<Data Transmission, connectedTo, Structural Analysis>
+<Data Transmission, partOf, Flight Simulation>
+<Drone System Development, connectedTo, Aircraft Maintenance Log>
+<Drone System Development, connectedTo, Fueling Procedure>
+<Drone System Development, connectedTo, New Material Development>
+<Drone System Development, connectedTo, Orbit Adjustment>
+<Flight Crew Training, connectedTo, Drone System Development>
+<Fueling Procedure, connectedTo, end>
+<International Space Station Resupply, connectedTo, Space Debris Tracking>
+<International Space Station Resupply, partOf, Launch Execution>
+<Launch Window Calculation, connectedTo, International Space Station Resupply>
+<Launch Window Calculation, connectedTo, Re_entry Vehicle Design>
+<Launch Window Calculation, connectedTo, Spacecraft Telemetry Analysis>
+<Mission Debriefing, connectedTo, Fueling Procedure>
+<Mission Debriefing, partOf, Flight Simulation>
+<Mission Planning, connectedTo, Data Transmission>
+<Mission Planning, connectedTo, Fueling Procedure>
+<New Material Development, connectedTo, Re_entry Vehicle Design>
+<Orbit Adjustment, connectedTo, Aircraft Maintenance Log>
+<Re_entry Vehicle Design, connectedTo, Fueling Procedure>
+<Re_entry Vehicle Design, connectedTo, Mission Planning>
+<Re_entry Vehicle Design, connectedTo, end>
+<Rocket Assembly, connectedTo, Satellite Configuration>
+<Rocket Assembly, connectedTo, Spacecraft Telemetry Analysis>
+<Satellite Configuration, connectedTo, Aircraft Maintenance Log>
+<Satellite Configuration, connectedTo, Drone System Development>
+<Satellite Configuration, connectedTo, Launch Window Calculation>
+<Satellite Configuration, connectedTo, Mission Planning>
+<Satellite Configuration, connectedTo, Spacecraft Telemetry Analysis>
+<Space Debris Tracking, connectedTo, Mission Planning>
+<Space Debris Tracking, partOf, Launch Execution>
+<Spacecraft Telemetry Analysis, connectedTo, Astronaut Training>
+<Spacecraft Telemetry Analysis, connectedTo, Re_entry Vehicle Design>
+<Structural Analysis, connectedTo, Mission Debriefing>
+<Structural Analysis, partOf, Flight Simulation>
+<start, connectedTo, Air Traffic Control Integration>
diff --git a/train/mermaid/hard/mermaid_157.mmd b/train/mermaid/hard/mermaid_157.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..68214808ea7fea39a0cc21da6594e7a6c1a2d83b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_157.mmd
@@ -0,0 +1,92 @@
+graph LR
+    N0([Runway Inspection])
+    N1[(Engine Overhaul)]
+    N2(Rocket Stage Separation)
+    N3[[Fueling Procedure]]
+    N4[/Re_entry Vehicle Design/]
+    N5[[Mission Planning]]
+    N6{Drone System Development}
+    N7(Astronaut Training)
+    N8{Launch Window Calculation}
+    S1(( ))
+    M0(( ))
+    subgraph Satellite Data Processing
+        nest0_0(Payload Integration)
+        nest0_1[/Component Recovery/]
+        nest0_2[(Air Traffic Control Integration)]
+    end
+    subgraph Aircraft Maintenance Log
+        nest1_0(International Space Station Resupply)
+        nest1_1{Structural Analysis}
+        nest1_2{Space Debris Tracking}
+        nest1_3(Hypersonic Flight Testing)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N1 -.-> nest0_0
+    nest0_2 --> N5
+    nest1_0 -.-> |coordinates| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N7 --> nest1_0
+    nest1_3 -.-> N5
+    N5 -.-> S1
+    S1 --> N8
+    S1 --> N7
+    N2 -.-> M0
+    N6 --> M0
+    M0 -.-> N8
+    N4 -.-> nest1_2
+    nest1_3 --> N2
+    style N0 fill:#B2EBF2,stroke:#00BCD4
+    style N1 fill:#B2EBF2,stroke:#00BCD4
+    style N2 fill:#B2EBF2,stroke:#00BCD4
+    style N3 fill:#B2EBF2,stroke:#00BCD4
+    style N4 fill:#B2EBF2,stroke:#00BCD4
+    style N5 fill:#EDE7F6,stroke:#7E57C2
+    style N6 fill:#B2EBF2,stroke:#00BCD4
+    style N7 fill:#D0EFEE,stroke:#73C6BC
+    style N8 fill:#EDE7F6,stroke:#7E57C2
+    style S1 fill:#D0EFEE,stroke:#73C6BC
+    style M0 fill:#B2EBF2,stroke:#00BCD4
+    style nest0_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_1 fill:#EDE7F6,stroke:#7E57C2
+    style nest0_2 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_0 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_1 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_2 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_3 fill:#D0EFEE,stroke:#73C6BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_158.mmd b/train/mermaid/hard/mermaid_158.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..76a668696c42c1c6abe799f7e7ee35e8393c1c0c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_158.mmd
@@ -0,0 +1,118 @@
+graph BT
+    N0([start])
+    N1(Structural Analysis)
+    N2(Data Transmission)
+    N3[/Mission Planning/]
+    N4[[New Material Development]]
+    N5([Component Recovery])
+    N6[/Aviation Safety Audit/]
+    N7(Hypersonic Flight Testing)
+    N8[/Satellite Data Processing/]
+    N9[/Thermal Shield Testing/]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Aircraft Maintenance Log
+        nest0_0[/Engine Overhaul/]
+        nest0_1[System Reboot]
+        nest0_2[/Space Debris Tracking/]
+    end
+    subgraph Rocket Assembly
+        nest1_0[[Drone System Development]]
+        nest1_1{Propulsion Testing}
+        nest1_2(Rocket Stage Separation)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |engineers| N4
+    N4 --> |executes| N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N5 -.-> nest0_0
+    nest0_2 --> N6
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N6 --> nest1_0
+    nest1_2 --> N8
+    N4 -.-> S0
+    S0 -.-> N9
+    S0 --> N6
+    S0 --> N8
+    N1 -.-> S1
+    S1 -.-> N9
+    S1 --> N5
+    S1 --> N3
+    S1 -.-> N4
+    N6 -.-> S2
+    S2 --> N9
+    S2 --> N8
+    N5 --> M1
+    N1 -.-> M1
+    M1 --> N7
+    N0 -.-> M2
+    N4 -.-> M2
+    M2 -.-> N7
+    style N0 fill:#EFEBE9,stroke:#A1887F
+    style N1 fill:#FFDAB9,stroke:#FFC085
+    style N2 fill:#FFDAB9,stroke:#FFC085
+    style N3 fill:#B2EBF2,stroke:#00BCD4
+    style N4 fill:#B2EBF2,stroke:#00BCD4
+    style N5 fill:#B2EBF2,stroke:#00BCD4
+    style N6 fill:#EFEBE9,stroke:#A1887F
+    style N7 fill:#EFEBE9,stroke:#A1887F
+    style N8 fill:#EFEBE9,stroke:#A1887F
+    style N9 fill:#FFDAB9,stroke:#FFC085
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#B2EBF2,stroke:#00BCD4
+    style S2 fill:#FFDAB9,stroke:#FFC085
+    style M1 fill:#B2EBF2,stroke:#00BCD4
+    style M2 fill:#EFEBE9,stroke:#A1887F
+    style nest0_0 fill:#EFEBE9,stroke:#A1887F
+    style nest0_1 fill:#B2EBF2,stroke:#00BCD4
+    style nest0_2 fill:#EFEBE9,stroke:#A1887F
+    style nest1_0 fill:#EFEBE9,stroke:#A1887F
+    style nest1_1 fill:#EFEBE9,stroke:#A1887F
+    style nest1_2 fill:#EFEBE9,stroke:#A1887F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_158.txt b/train/mermaid/hard/mermaid_158.txt
new file mode 100644
index 0000000000000000000000000000000000000000..28d8980537cb0f44e5dc7a92de7215d25dd7fb36
--- /dev/null
+++ b/train/mermaid/hard/mermaid_158.txt
@@ -0,0 +1,36 @@
+<Aviation Safety Audit, connectedTo, Drone System Development>
+<Aviation Safety Audit, connectedTo, Hypersonic Flight Testing>
+<Aviation Safety Audit, connectedTo, Satellite Data Processing>
+<Aviation Safety Audit, connectedTo, Thermal Shield Testing>
+<Component Recovery, connectedTo, Aviation Safety Audit>
+<Component Recovery, connectedTo, Engine Overhaul>
+<Component Recovery, connectedTo, Hypersonic Flight Testing>
+<Data Transmission, connectedTo, Mission Planning>
+<Drone System Development, connectedTo, Propulsion Testing>
+<Drone System Development, partOf, Rocket Assembly>
+<Engine Overhaul, connectedTo, System Reboot>
+<Engine Overhaul, partOf, Aircraft Maintenance Log>
+<Hypersonic Flight Testing, connectedTo, Satellite Data Processing>
+<Mission Planning, engineers, New Material Development>
+<New Material Development, connectedTo, Aviation Safety Audit>
+<New Material Development, connectedTo, Hypersonic Flight Testing>
+<New Material Development, connectedTo, Satellite Data Processing>
+<New Material Development, connectedTo, Thermal Shield Testing>
+<New Material Development, executes, Component Recovery>
+<Propulsion Testing, connectedTo, Rocket Stage Separation>
+<Propulsion Testing, partOf, Rocket Assembly>
+<Rocket Stage Separation, connectedTo, Satellite Data Processing>
+<Rocket Stage Separation, partOf, Rocket Assembly>
+<Satellite Data Processing, connectedTo, Thermal Shield Testing>
+<Space Debris Tracking, connectedTo, Aviation Safety Audit>
+<Space Debris Tracking, partOf, Aircraft Maintenance Log>
+<Structural Analysis, connectedTo, Component Recovery>
+<Structural Analysis, connectedTo, Data Transmission>
+<Structural Analysis, connectedTo, Hypersonic Flight Testing>
+<Structural Analysis, connectedTo, Mission Planning>
+<Structural Analysis, connectedTo, New Material Development>
+<Structural Analysis, connectedTo, Thermal Shield Testing>
+<System Reboot, connectedTo, Space Debris Tracking>
+<System Reboot, partOf, Aircraft Maintenance Log>
+<start, connectedTo, Hypersonic Flight Testing>
+<start, connectedTo, Structural Analysis>
diff --git a/train/mermaid/hard/mermaid_159.txt b/train/mermaid/hard/mermaid_159.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4dc8bf6124d2ae210e4f8f759db45279022adc82
--- /dev/null
+++ b/train/mermaid/hard/mermaid_159.txt
@@ -0,0 +1,42 @@
+<Aircraft Maintenance Log, connectedTo, Data Transmission>
+<Airframe Assembly, connectedTo, Avionics Installation>
+<Airframe Assembly, partOf, International Space Station Resupply>
+<Astronaut Training, connectedTo, Launch Execution>
+<Avionics Installation, connectedTo, Rocket Assembly>
+<Avionics Installation, partOf, International Space Station Resupply>
+<Component Recovery, connectedTo, Ground Station Coordination>
+<Data Transmission, connectedTo, Launch Window Calculation>
+<Drone System Development, connectedTo, System Reboot>
+<Drone System Development, partOf, Aircraft Manufacturing>
+<Ground Station Coordination, certifies, Spacecraft Telemetry Analysis>
+<Launch Window Calculation, connectedTo, Re_entry Vehicle Design>
+<Mission Debriefing, connectedTo, Aircraft Maintenance Log>
+<Mission Debriefing, connectedTo, Component Recovery>
+<Mission Debriefing, connectedTo, Data Transmission>
+<Mission Debriefing, connectedTo, Ground Station Coordination>
+<Mission Debriefing, connectedTo, Mission Planning>
+<Mission Debriefing, connectedTo, Space Debris Tracking>
+<Mission Debriefing, connectedTo, Spacecraft Telemetry Analysis>
+<Mission Debriefing, predicts, Re_entry Vehicle Design>
+<Mission Planning, deploys, Aircraft Maintenance Log>
+<Payload Integration, connectedTo, Mission Debriefing>
+<Propulsion Testing, partOf, Aircraft Manufacturing>
+<Propulsion Testing, secures, Drone System Development>
+<Re_entry Vehicle Design, connectedTo, Component Recovery>
+<Re_entry Vehicle Design, connectedTo, Thermal Shield Testing>
+<Rocket Assembly, connectedTo, Payload Integration>
+<Rocket Assembly, partOf, International Space Station Resupply>
+<Runway Inspection, connectedTo, Mission Debriefing>
+<Runway Inspection, connectedTo, Telemetry Setup>
+<Satellite Data Processing, connectedTo, Propulsion Testing>
+<Satellite Data Processing, partOf, Aircraft Manufacturing>
+<Space Debris Tracking, connectedTo, Astronaut Training>
+<Space Debris Tracking, connectedTo, Satellite Data Processing>
+<Spacecraft Telemetry Analysis, connectedTo, Astronaut Training>
+<Spacecraft Telemetry Analysis, connectedTo, Space Debris Tracking>
+<System Reboot, connectedTo, Component Recovery>
+<System Reboot, partOf, Aircraft Manufacturing>
+<Telemetry Setup, adjusts, Mission Debriefing>
+<Telemetry Setup, reboots, Payload Integration>
+<Thermal Shield Testing, connectedTo, Airframe Assembly>
+<Thermal Shield Testing, partOf, International Space Station Resupply>
diff --git a/train/mermaid/hard/mermaid_16.mmd b/train/mermaid/hard/mermaid_16.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..015a5c275b96df2b287ff1169fd22b029869193b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_16.mmd
@@ -0,0 +1,138 @@
+graph TD
+    N0([start])
+    N1([Triage])
+    N2[/Treatment Plan/]
+    N3{Prescription}
+    N4(Clinical Trial)
+    N5(Physical Examination)
+    N6[(Device Implantation)]
+    N7[/Medical History/]
+    N8{Epidemiological Tracking}
+    N9[[Case Review]]
+    N10[[Wound Care]]
+    N11[/Allergy Test/]
+    N12{Surgery}
+    N13[[Vaccination]]
+    N14(Biopsy)
+    N15{Rehabilitation Therapy}
+    N16[Patient Transfer]
+    N17[Dental Check_up]
+    N18([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Diagnosis
+        nest0_0(Insurance Claim)
+        nest0_1[(Pain Management)]
+    end
+    subgraph Nutritional Counseling
+        nest1_0(Follow_up)
+        nest1_1(Emergency Response)
+    end
+    N0 --> |triages| N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    N17 --> N18
+    nest0_0 -.-> nest0_1
+    N17 --> nest0_0
+    nest0_1 -.-> N9
+    nest1_0 --> nest1_1
+    N1 --> nest1_0
+    nest1_1 -.-> N3
+    N13 --> S0
+    S0 -.-> N17
+    S0 --> N15
+    S0 -.-> N18
+    S0 -.-> N16
+    N12 --> S1
+    S1 -.-> N15
+    S1 -.-> |prescribes| N16
+    S1 -.-> N18
+    N4 --> M0
+    N3 -.-> M0
+    M0 -.-> N11
+    N2 --> M1
+    N6 -.-> M1
+    M1 --> N10
+    style N0 fill:#FFF3E0,stroke:#FFA726
+    style N1 fill:#FCFCE7,stroke:#DCE775
+    style N2 fill:#FCFCE7,stroke:#DCE775
+    style N3 fill:#FCFCE7,stroke:#DCE775
+    style N4 fill:#FFF3E0,stroke:#FFA726
+    style N5 fill:#F1F8E9,stroke:#81C784
+    style N6 fill:#FFF3E0,stroke:#FFA726
+    style N7 fill:#FFF3E0,stroke:#FFA726
+    style N8 fill:#F1F8E9,stroke:#81C784
+    style N9 fill:#FCFCE7,stroke:#DCE775
+    style N10 fill:#FFF3E0,stroke:#FFA726
+    style N11 fill:#FFF3E0,stroke:#FFA726
+    style N12 fill:#F1F8E9,stroke:#81C784
+    style N13 fill:#FCFCE7,stroke:#DCE775
+    style N14 fill:#FCFCE7,stroke:#DCE775
+    style N15 fill:#FFF3E0,stroke:#FFA726
+    style N16 fill:#FFF3E0,stroke:#FFA726
+    style N17 fill:#FCFCE7,stroke:#DCE775
+    style N18 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#F1F8E9,stroke:#81C784
+    style S1 fill:#FCFCE7,stroke:#DCE775
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style nest0_0 fill:#FFF3E0,stroke:#FFA726
+    style nest0_1 fill:#FCFCE7,stroke:#DCE775
+    style nest1_0 fill:#FCFCE7,stroke:#DCE775
+    style nest1_1 fill:#FFF3E0,stroke:#FFA726
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_160.mmd b/train/mermaid/hard/mermaid_160.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2bd6795d1079283075f720dba7997bce4fe700ab
--- /dev/null
+++ b/train/mermaid/hard/mermaid_160.mmd
@@ -0,0 +1,126 @@
+graph LR
+    N0([Emergency Protocols])
+    N1[(Extravehicular Activity Planning)]
+    N2[Aviation Safety Audit]
+    N3[[Ground Station Coordination]]
+    N4{Re_entry Vehicle Design}
+    N5[[Payload Integration]]
+    N6([Drone System Development])
+    N7(Data Transmission)
+    N8([Countdown Sequence])
+    N9([Avionics Installation])
+    N10([Satellite Configuration])
+    N11(New Material Development)
+    N12[Spacecraft Telemetry Analysis]
+    N13[/Rocket Assembly/]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Satellite Data Processing
+        nest0_0([Orbit Adjustment])
+        nest0_1(Launch Execution)
+    end
+    subgraph Thermal Shield Testing
+        nest1_0[/System Reboot/]
+        nest1_1{Rocket Stage Separation}
+        nest1_2[[Launch Window Calculation]]
+        nest1_3[/Aircraft Maintenance Log/]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 --> nest0_1
+    N13 --> nest0_0
+    nest0_1 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N7 --> |assembles| nest1_0
+    nest1_3 -.-> N6
+    N11 --> S0
+    S0 --> N13
+    S0 --> N14
+    N7 --> S1
+    S1 --> N14
+    S1 -.-> N12
+    N1 -.-> M0
+    N0 --> |adjusts| M0
+    M0 -.-> N3
+    N2 --> M1
+    N1 -.-> M1
+    N3 --> M1
+    M1 -.-> N5
+    style N0 fill:#F5F5DC,stroke:#BCB88A
+    style N1 fill:#FFFDE7,stroke:#FBC02D
+    style N2 fill:#FFF6D9,stroke:#FFCC7A
+    style N3 fill:#FFFDE7,stroke:#FBC02D
+    style N4 fill:#FFF6D9,stroke:#FFCC7A
+    style N5 fill:#F5F5DC,stroke:#BCB88A
+    style N6 fill:#FFF6D9,stroke:#FFCC7A
+    style N7 fill:#FFFDE7,stroke:#FBC02D
+    style N8 fill:#FFFDE7,stroke:#FBC02D
+    style N9 fill:#FFFDE7,stroke:#FBC02D
+    style N10 fill:#F5F5DC,stroke:#BCB88A
+    style N11 fill:#F5F5DC,stroke:#BCB88A
+    style N12 fill:#FFF6D9,stroke:#FFCC7A
+    style N13 fill:#FFF6D9,stroke:#FFCC7A
+    style N14 fill:#FFFDE7,stroke:#FBC02D
+    style S0 fill:#FFF6D9,stroke:#FFCC7A
+    style S1 fill:#FFFDE7,stroke:#FBC02D
+    style M0 fill:#F5F5DC,stroke:#BCB88A
+    style M1 fill:#FFFDE7,stroke:#FBC02D
+    style nest0_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_1 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_0 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_1 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_2 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_3 fill:#F5F5DC,stroke:#BCB88A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FBC02D,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_162.txt b/train/mermaid/hard/mermaid_162.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a47fea9ba2e3891e5894cc69d0f7a9ff339de6d0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_162.txt
@@ -0,0 +1,44 @@
+<Auto Accident Claims, connectedTo, Customer Onboarding>
+<Benefit Payout, connectedTo, Auto Accident Claims>
+<Business Interruption Coverage, connectedTo, Coverage Review>
+<Business Interruption Coverage, connectedTo, Risk Assessment>
+<Business Interruption Coverage, connectedTo, end>
+<Catastrophe Modeling, connectedTo, Business Interruption Coverage>
+<Claim Adjustment, connectedTo, Digital Policy Management>
+<Claim Adjustment, partOf, Customer Communication>
+<Claim Submission, connectedTo, Auto Accident Claims>
+<Claim Submission, connectedTo, Benefit Payout>
+<Claim Submission, connectedTo, Claim Adjustment>
+<Claims Litigation Management, connectedTo, Auto Accident Claims>
+<Claims Litigation Management, connectedTo, Telematics Data Analysis>
+<Coverage Review, connectedTo, Risk Assessment>
+<Coverage Review, connectedTo, end>
+<Customer Onboarding, yes, Market Research>
+<Cyber Insurance Policy, connectedTo, Auto Accident Claims>
+<Cyber Insurance Policy, connectedTo, Claims Litigation Management>
+<Cyber Insurance Policy, connectedTo, Coverage Review>
+<Cyber Insurance Policy, connectedTo, Market Research>
+<Cyber Insurance Policy, connectedTo, Risk Assessment>
+<Digital Policy Management, connectedTo, Product Development>
+<Digital Policy Management, partOf, Customer Communication>
+<Fraud Investigation, connectedTo, Catastrophe Modeling>
+<Fraud Investigation, connectedTo, Cyber Insurance Policy>
+<Investment Management for Reserves, connectedTo, Policy Renewal>
+<Investment Management for Reserves, partOf, Policy Application>
+<Legal Review of Claims, connectedTo, Market Research>
+<Legal Review of Claims, partOf, Customer Communication>
+<Life Insurance Underwriting, connectedTo, Catastrophe Modeling>
+<Life Insurance Underwriting, connectedTo, Property Damage Assessment>
+<Loss Prevention, connectedTo, Life Insurance Underwriting>
+<Market Research, connectedTo, Catastrophe Modeling>
+<Market Research, connectedTo, end>
+<Policy Renewal, connectedTo, end>
+<Policy Renewal, partOf, Policy Application>
+<Product Development, connectedTo, Legal Review of Claims>
+<Product Development, partOf, Customer Communication>
+<Property Damage Assessment, connectedTo, Fraud Investigation>
+<Risk Assessment, connectedTo, end>
+<Telematics Data Analysis, connectedTo, Catastrophe Modeling>
+<Telematics Data Analysis, connectedTo, Claim Submission>
+<Telematics Data Analysis, connectedTo, Investment Management for Reserves>
+<start, connectedTo, Loss Prevention>
diff --git a/train/mermaid/hard/mermaid_163.mmd b/train/mermaid/hard/mermaid_163.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..00bfeb1026739376fdaaf132e59270180501c18d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_163.mmd
@@ -0,0 +1,126 @@
+graph BT
+    N0([Product Development])
+    N1([Premium Calculation])
+    N2[(Claims Litigation Management)]
+    N3[Third_Party Administrator Liaison]
+    N4(Agent Training)
+    N5[Cyber Insurance Policy]
+    N6(Claim Submission)
+    N7[[Life Insurance Underwriting]]
+    N8[Policy Application]
+    N9(Policy Cancellation)
+    N10(Healthcare Provider Network Management)
+    N11[Broker Management]
+    N12(Investment Management for Reserves)
+    N13[/Coverage Review/]
+    N14{Risk Assessment}
+    N15([Fraud Investigation])
+    N16[Policy Renewal]
+    N17([Payment Processing])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Loss Prevention
+        nest0_0[(Benefit Payout)]
+        nest0_1(Customer Onboarding)
+    end
+    subgraph Underwriting
+        nest1_0(Digital Policy Management)
+        nest1_1([Property Damage Assessment])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> |rejects| N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 --> N17
+    nest0_0 -.-> nest0_1
+    N11 -.-> nest0_0
+    nest0_1 --> N1
+    nest1_0 --> nest1_1
+    N15 -.-> nest1_0
+    nest1_1 -.-> N2
+    N10 --> S0
+    S0 --> N14
+    S0 -.-> N12
+    S0 -.-> N17
+    N1 --> S1
+    S1 -.-> N7
+    S1 -.-> N3
+    S1 --> N11
+    N8 -.-> M0
+    N6 -.-> M0
+    N10 --> M0
+    M0 --> N13
+    style N0 fill:#FFF9C4,stroke:#FFEB3B
+    style N1 fill:#FFF9C4,stroke:#FFEB3B
+    style N2 fill:#D0E0F8,stroke:#4285F4
+    style N3 fill:#FFF9C4,stroke:#FFEB3B
+    style N4 fill:#ECF0FD,stroke:#B8C0F5
+    style N5 fill:#ECF0FD,stroke:#B8C0F5
+    style N6 fill:#FFF9C4,stroke:#FFEB3B
+    style N7 fill:#ECF0FD,stroke:#B8C0F5
+    style N8 fill:#FFF9C4,stroke:#FFEB3B
+    style N9 fill:#FFF9C4,stroke:#FFEB3B
+    style N10 fill:#D0E0F8,stroke:#4285F4
+    style N11 fill:#FFF9C4,stroke:#FFEB3B
+    style N12 fill:#ECF0FD,stroke:#B8C0F5
+    style N13 fill:#ECF0FD,stroke:#B8C0F5
+    style N14 fill:#ECF0FD,stroke:#B8C0F5
+    style N15 fill:#FFF9C4,stroke:#FFEB3B
+    style N16 fill:#D0E0F8,stroke:#4285F4
+    style N17 fill:#FFF9C4,stroke:#FFEB3B
+    style S0 fill:#D0E0F8,stroke:#4285F4
+    style S1 fill:#FFF9C4,stroke:#FFEB3B
+    style M0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_0 fill:#D0E0F8,stroke:#4285F4
+    style nest1_1 fill:#ECF0FD,stroke:#B8C0F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B8C0F5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_163.txt b/train/mermaid/hard/mermaid_163.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fa890e9351daf32e06a81a4915e547d5e6e5c1e8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_163.txt
@@ -0,0 +1,36 @@
+<Agent Training, connectedTo, Cyber Insurance Policy>
+<Benefit Payout, connectedTo, Customer Onboarding>
+<Benefit Payout, partOf, Loss Prevention>
+<Broker Management, connectedTo, Benefit Payout>
+<Broker Management, connectedTo, Investment Management for Reserves>
+<Claim Submission, connectedTo, Coverage Review>
+<Claim Submission, connectedTo, Life Insurance Underwriting>
+<Claims Litigation Management, connectedTo, Third_Party Administrator Liaison>
+<Coverage Review, connectedTo, Risk Assessment>
+<Customer Onboarding, connectedTo, Premium Calculation>
+<Customer Onboarding, partOf, Loss Prevention>
+<Cyber Insurance Policy, rejects, Claim Submission>
+<Digital Policy Management, connectedTo, Property Damage Assessment>
+<Digital Policy Management, partOf, Underwriting>
+<Fraud Investigation, connectedTo, Digital Policy Management>
+<Fraud Investigation, connectedTo, Policy Renewal>
+<Healthcare Provider Network Management, connectedTo, Broker Management>
+<Healthcare Provider Network Management, connectedTo, Coverage Review>
+<Healthcare Provider Network Management, connectedTo, Investment Management for Reserves>
+<Healthcare Provider Network Management, connectedTo, Payment Processing>
+<Healthcare Provider Network Management, connectedTo, Risk Assessment>
+<Investment Management for Reserves, connectedTo, Coverage Review>
+<Life Insurance Underwriting, connectedTo, Policy Application>
+<Policy Application, connectedTo, Coverage Review>
+<Policy Application, connectedTo, Policy Cancellation>
+<Policy Cancellation, connectedTo, Healthcare Provider Network Management>
+<Policy Renewal, connectedTo, Payment Processing>
+<Premium Calculation, connectedTo, Broker Management>
+<Premium Calculation, connectedTo, Claims Litigation Management>
+<Premium Calculation, connectedTo, Life Insurance Underwriting>
+<Premium Calculation, connectedTo, Third_Party Administrator Liaison>
+<Product Development, connectedTo, Premium Calculation>
+<Property Damage Assessment, connectedTo, Claims Litigation Management>
+<Property Damage Assessment, partOf, Underwriting>
+<Risk Assessment, connectedTo, Fraud Investigation>
+<Third_Party Administrator Liaison, connectedTo, Agent Training>
diff --git a/train/mermaid/hard/mermaid_164.mmd b/train/mermaid/hard/mermaid_164.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..10a19d4d8713b0bf432de70059db8b57e19ff611
--- /dev/null
+++ b/train/mermaid/hard/mermaid_164.mmd
@@ -0,0 +1,150 @@
+graph BT
+    N0([start])
+    N1{Claim Adjustment}
+    N2(Annuity Sales)
+    N3[/Broker Management/]
+    N4{Reinsurance Negotiation}
+    N5[Cyber Insurance Policy]
+    N6(Auto Accident Claims)
+    N7[Policy Application]
+    N8(Third_Party Administrator Liaison)
+    N9{Legal Review of Claims}
+    N10([Coverage Review])
+    N11[(Fraud Investigation)]
+    N12[(Data Security)]
+    N13[/Agent Training/]
+    N14[[Business Interruption Coverage]]
+    N15([Risk Assessment])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Loss Prevention
+        nest0_0[(Life Insurance Underwriting)]
+        nest0_1[Property Damage Assessment]
+        nest0_2[[Underwriting]]
+        nest0_3[[Policy Issuance]]
+    end
+    subgraph Product Development
+        nest1_0(Compliance Reporting)
+        nest1_1{Investment Management for Reserves}
+        nest1_2[(Premium Calculation)]
+        nest1_3[[Actuarial Analysis]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N4 --> nest0_0
+    nest0_3 -.-> N15
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N12 --> nest1_0
+    nest1_3 -.-> N7
+    N5 --> S0
+    S0 --> N15
+    S0 --> |prevents| N14
+    N1 -.-> S1
+    S1 -.-> |optimizes| N14
+    S1 --> N12
+    S1 --> N5
+    N5 -.-> S2
+    S2 -.-> N11
+    S2 -.-> N14
+    N5 -.-> M1
+    N0 --> M1
+    N8 --> M1
+    M1 --> N12
+    N6 --> M2
+    N0 --> M2
+    N4 -.-> M2
+    M2 --> N13
+    style N0 fill:#E1BEE7,stroke:#9C27B0
+    style N1 fill:#E1BEE7,stroke:#9C27B0
+    style N2 fill:#E1BEE7,stroke:#9C27B0
+    style N3 fill:#DACBE3,stroke:#A188D0
+    style N4 fill:#D1C4E9,stroke:#673AB7
+    style N5 fill:#D1C4E9,stroke:#673AB7
+    style N6 fill:#DACBE3,stroke:#A188D0
+    style N7 fill:#D1C4E9,stroke:#673AB7
+    style N8 fill:#E1BEE7,stroke:#9C27B0
+    style N9 fill:#D1C4E9,stroke:#673AB7
+    style N10 fill:#E1BEE7,stroke:#9C27B0
+    style N11 fill:#D1C4E9,stroke:#673AB7
+    style N12 fill:#D1C4E9,stroke:#673AB7
+    style N13 fill:#DACBE3,stroke:#A188D0
+    style N14 fill:#D1C4E9,stroke:#673AB7
+    style N15 fill:#DACBE3,stroke:#A188D0
+    style S0 fill:#E1BEE7,stroke:#9C27B0
+    style S1 fill:#D1C4E9,stroke:#673AB7
+    style S2 fill:#D1C4E9,stroke:#673AB7
+    style M1 fill:#D1C4E9,stroke:#673AB7
+    style M2 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_0 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_1 fill:#D1C4E9,stroke:#673AB7
+    style nest0_2 fill:#DACBE3,stroke:#A188D0
+    style nest0_3 fill:#D1C4E9,stroke:#673AB7
+    style nest1_0 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_1 fill:#DACBE3,stroke:#A188D0
+    style nest1_2 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_3 fill:#DACBE3,stroke:#A188D0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#9C27B0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_166.txt b/train/mermaid/hard/mermaid_166.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ef93e09229cead97d46092162e57d7c72fb3a0fa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_166.txt
@@ -0,0 +1,41 @@
+<Actuarial Analysis, mitigates, Product Development>
+<Agent Training, connectedTo, Customer Communication>
+<Agent Training, connectedTo, Customer Onboarding>
+<Agent Training, prevents, Policy Issuance>
+<Annuity Sales, connectedTo, Agent Training>
+<Benefit Payout, connectedTo, Compliance Reporting>
+<Benefit Payout, connectedTo, Third_Party Administrator Liaison>
+<Broker Management, connectedTo, Benefit Payout>
+<Broker Management, partOf, Coverage Review>
+<Claims Litigation Management, connectedTo, Healthcare Provider Network Management>
+<Claims Litigation Management, connectedTo, Risk Assessment>
+<Claims Litigation Management, connectedTo, Third_Party Administrator Liaison>
+<Claims Litigation Management, connectedTo, end>
+<Compliance Reporting, connectedTo, Third_Party Administrator Liaison>
+<Customer Communication, connectedTo, end>
+<Customer Onboarding, quotes, Policy Issuance>
+<Customer Support, connectedTo, Actuarial Analysis>
+<Cyber Insurance Policy, claims, Broker Management>
+<Cyber Insurance Policy, partOf, Coverage Review>
+<Healthcare Provider Network Management, connectedTo, Benefit Payout>
+<Life Insurance Underwriting, connectedTo, Risk Assessment>
+<Life Insurance Underwriting, partOf, Business Interruption Coverage>
+<Loss Prevention, connectedTo, Life Insurance Underwriting>
+<Loss Prevention, partOf, Business Interruption Coverage>
+<Policy Application, connectedTo, Claims Litigation Management>
+<Policy Application, connectedTo, Healthcare Provider Network Management>
+<Policy Application, connectedTo, Third_Party Administrator Liaison>
+<Policy Application, connectedTo, end>
+<Policy Issuance, connectedTo, Customer Communication>
+<Product Development, connectedTo, Risk Assessment>
+<Risk Assessment, connectedTo, Loss Prevention>
+<Risk Assessment, connectedTo, Telematics Data Analysis>
+<Telematics Data Analysis, connectedTo, Annuity Sales>
+<Telematics Data Analysis, connectedTo, Customer Onboarding>
+<Telematics Data Analysis, connectedTo, Policy Issuance>
+<Third_Party Administrator Liaison, connectedTo, Cyber Insurance Policy>
+<Third_Party Administrator Liaison, connectedTo, Underwriting>
+<Underwriting, connectedTo, Customer Support>
+<start, connectedTo, Healthcare Provider Network Management>
+<start, connectedTo, Policy Application>
+<start, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_167.mmd b/train/mermaid/hard/mermaid_167.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f2f5f200cfa61ba130c521c9dff2aa5f88513b95
--- /dev/null
+++ b/train/mermaid/hard/mermaid_167.mmd
@@ -0,0 +1,144 @@
+graph LR
+    N0([start])
+    N1{Benefit Payout}
+    N2[(Investment Management for Reserves)]
+    N3[Property Damage Assessment]
+    N4(Claim Submission)
+    N5([Coverage Review])
+    N6[/Policy Application/]
+    N7([Underwriting])
+    N8([Reinsurance Negotiation])
+    N9{Premium Calculation}
+    N10[/Data Security/]
+    N11(Policy Renewal)
+    N12(Broker Management)
+    N13[(Compliance Reporting)]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Annuity Sales
+        nest0_0[(Legal Review of Claims)]
+        nest0_1(Business Interruption Coverage)
+        nest0_2[/Claim Adjustment/]
+        nest0_3[Customer Communication]
+    end
+    subgraph Auto Accident Claims
+        nest1_0[/Market Research/]
+        nest1_1([Third_Party Administrator Liaison])
+        nest1_2[(Agent Training)]
+        nest1_3[(Product Development)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> |complies| N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 --> |pays| nest0_2
+    nest0_2 --> nest0_3
+    N1 --> nest0_0
+    nest0_3 --> N13
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 --> N3
+    N3 -.-> S0
+    S0 --> N6
+    S0 -.-> N13
+    S0 --> N5
+    N9 -.-> S1
+    S1 -.-> N11
+    S1 --> N12
+    S1 --> N13
+    N0 -.-> |reviews| M0
+    N1 -.-> M0
+    M0 --> N3
+    N0 --> M1
+    N1 --> M1
+    N2 --> M1
+    M1 -.-> N4
+    N4 -.-> M2
+    N3 -.-> M2
+    N5 -.-> M2
+    M2 --> N9
+    style N0 fill:#E0E6E9,stroke:#AABEC6
+    style N1 fill:#FAEBF3,stroke:#F7BEE0
+    style N2 fill:#C2E8E6,stroke:#61CAC3
+    style N3 fill:#E0E6E9,stroke:#AABEC6
+    style N4 fill:#E0E6E9,stroke:#AABEC6
+    style N5 fill:#C2E8E6,stroke:#61CAC3
+    style N6 fill:#C2E8E6,stroke:#61CAC3
+    style N7 fill:#C2E8E6,stroke:#61CAC3
+    style N8 fill:#C2E8E6,stroke:#61CAC3
+    style N9 fill:#FAEBF3,stroke:#F7BEE0
+    style N10 fill:#C2E8E6,stroke:#61CAC3
+    style N11 fill:#C2E8E6,stroke:#61CAC3
+    style N12 fill:#E0E6E9,stroke:#AABEC6
+    style N13 fill:#FAEBF3,stroke:#F7BEE0
+    style S0 fill:#C2E8E6,stroke:#61CAC3
+    style S1 fill:#C2E8E6,stroke:#61CAC3
+    style M0 fill:#C2E8E6,stroke:#61CAC3
+    style M1 fill:#C2E8E6,stroke:#61CAC3
+    style M2 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_2 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_3 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_2 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_3 fill:#C2E8E6,stroke:#61CAC3
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#F7BEE0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_169.mmd b/train/mermaid/hard/mermaid_169.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3308e52b99518d0d51750224557d563cf26822bc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_169.mmd
@@ -0,0 +1,124 @@
+graph RL
+    N0([start])
+    N1[/Risk Management Framework/]
+    N2{Penetration Testing}
+    N3{Security Policy Development}
+    N4([Access Control])
+    N5[(Physical Security Integration)]
+    N6(Security Information and Event Management)
+    N7[Backup and Recovery]
+    N8[(Digital Forensics)]
+    N9{Compliance Monitoring}
+    N10([Intrusion Prevention])
+    N11(User Training)
+    N12[(Security Operations Center Monitoring)]
+    N13[[Firewall Configuration]]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Cryptography Implementation
+        nest0_0(Threat Detection)
+        nest0_1{Supply Chain Security}
+        nest0_2[/Malware Analysis/]
+    end
+    subgraph Application Security
+        nest1_0([Data Loss Prevention])
+        nest1_1(Web Application Firewall Deployment)
+        nest1_2[(Vulnerability Assessment)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> |authenticates| N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N12 --> nest0_0
+    nest0_2 -.-> N10
+    nest1_0 -.-> |implements| nest1_1
+    nest1_1 --> nest1_2
+    N11 -.-> nest1_0
+    nest1_2 -.-> N1
+    N9 --> S0
+    S0 --> N14
+    S0 -.-> N13
+    S0 --> N11
+    N7 -.-> S1
+    S1 -.-> N14
+    S1 --> N11
+    S1 --> |designs| N12
+    N2 --> M0
+    N7 --> M0
+    N5 -.-> M0
+    N0 --> |prevents| M0
+    M0 -.-> N9
+    style N0 fill:#FFECB3,stroke:#FFC107
+    style N1 fill:#EDE7F6,stroke:#7E57C2
+    style N2 fill:#EDE7F6,stroke:#7E57C2
+    style N3 fill:#EDE7F6,stroke:#7E57C2
+    style N4 fill:#FFECB3,stroke:#FFC107
+    style N5 fill:#EDE7F6,stroke:#7E57C2
+    style N6 fill:#EDE7F6,stroke:#7E57C2
+    style N7 fill:#FFDAB9,stroke:#FFC085
+    style N8 fill:#EDE7F6,stroke:#7E57C2
+    style N9 fill:#FFECB3,stroke:#FFC107
+    style N10 fill:#FFDAB9,stroke:#FFC085
+    style N11 fill:#FFECB3,stroke:#FFC107
+    style N12 fill:#EDE7F6,stroke:#7E57C2
+    style N13 fill:#FFECB3,stroke:#FFC107
+    style N14 fill:#FFECB3,stroke:#FFC107
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#EDE7F6,stroke:#7E57C2
+    style M0 fill:#EDE7F6,stroke:#7E57C2
+    style nest0_0 fill:#FFDAB9,stroke:#FFC085
+    style nest0_1 fill:#FFDAB9,stroke:#FFC085
+    style nest0_2 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_0 fill:#FFDAB9,stroke:#FFC085
+    style nest1_1 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_2 fill:#FFDAB9,stroke:#FFC085
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#7E57C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_17.mmd b/train/mermaid/hard/mermaid_17.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e04fbe4d51851aab735bb293e0a6e4cc795c1114
--- /dev/null
+++ b/train/mermaid/hard/mermaid_17.mmd
@@ -0,0 +1,114 @@
+graph LR
+    N0([Storage])
+    N1[Quality Control]
+    N2[(Final Testing)]
+    N3{Logistics Planning}
+    N4(Painting)
+    N5[Inspection]
+    N6([Production Scheduling])
+    N7[(Design Review)]
+    N8(Supply Chain Synchronization)
+    N9(Yield Optimization)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Supplier Qualification
+        nest0_0{Packaging}
+        nest0_1(Welding)
+    end
+    subgraph Component Sourcing
+        nest1_0([Automated Guided Vehicle Operation])
+        nest1_1(Workflow Optimization)
+        nest1_2(Assembly)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> |cuts| N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    nest0_0 -.-> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N8 -.-> nest1_0
+    nest1_2 -.-> |prototypes| N6
+    N6 -.-> S0
+    S0 -.-> N9
+    S0 --> N8
+    N5 -.-> S1
+    S1 --> N9
+    S1 --> N7
+    S1 --> N8
+    N2 --> M0
+    N1 -.-> M0
+    M0 --> N4
+    N1 -.-> M1
+    N0 --> M1
+    N2 --> M1
+    M1 --> N9
+    N3 --> M2
+    N0 --> M2
+    N1 --> M2
+    M2 --> N5
+    style N0 fill:#E1BEE7,stroke:#9C27B0
+    style N1 fill:#C8EDFF,stroke:#82DAFF
+    style N2 fill:#DACBE3,stroke:#A188D0
+    style N3 fill:#E1BEE7,stroke:#9C27B0
+    style N4 fill:#C8EDFF,stroke:#82DAFF
+    style N5 fill:#E1BEE7,stroke:#9C27B0
+    style N6 fill:#C8EDFF,stroke:#82DAFF
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style N8 fill:#DACBE3,stroke:#A188D0
+    style N9 fill:#DACBE3,stroke:#A188D0
+    style S0 fill:#E1BEE7,stroke:#9C27B0
+    style S1 fill:#C8EDFF,stroke:#82DAFF
+    style M0 fill:#DACBE3,stroke:#A188D0
+    style M1 fill:#C8EDFF,stroke:#82DAFF
+    style M2 fill:#DACBE3,stroke:#A188D0
+    style nest0_0 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_1 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_0 fill:#DACBE3,stroke:#A188D0
+    style nest1_1 fill:#DACBE3,stroke:#A188D0
+    style nest1_2 fill:#DACBE3,stroke:#A188D0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A188D0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_170.mmd b/train/mermaid/hard/mermaid_170.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3d69cb6a56e4fb55a9b30b37746fc2447fc573de
--- /dev/null
+++ b/train/mermaid/hard/mermaid_170.mmd
@@ -0,0 +1,136 @@
+graph RL
+    N0([start])
+    N1[Disaster Recovery Planning]
+    N2[/Security Patch Management/]
+    N3[[Zero Trust Architecture]]
+    N4([Web Application Firewall Deployment])
+    N5[Backup and Recovery]
+    N6{Threat Detection}
+    N7(Application Security)
+    N8[Risk Management Framework]
+    N9(Threat Intelligence Gathering)
+    N10([Security Audit])
+    N11(Endpoint Protection)
+    N12([Compliance Monitoring])
+    N13(Malware Analysis)
+    N14[/Security Awareness Training/]
+    N15[Identity Management]
+    N16[User Training]
+    N17[Supply Chain Security]
+    N18([Network Security])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Data Loss Prevention
+        nest0_0(Cryptography Implementation)
+        nest0_1[Security Operations Center Monitoring]
+    end
+    subgraph Security Policy Development
+        nest1_0[(Security Information and Event Management)]
+        nest1_1[Antivirus Management]
+        nest1_2(Incident Response)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 -.-> N18
+    nest0_0 -.-> |complies| nest0_1
+    N10 -.-> nest0_0
+    nest0_1 --> N2
+    nest1_0 -.-> |authenticates| nest1_1
+    nest1_1 -.-> nest1_2
+    N6 -.-> nest1_0
+    nest1_2 -.-> N4
+    N14 -.-> S0
+    S0 --> N17
+    S0 --> N18
+    N3 -.-> S1
+    S1 -.-> |mitigates| N5
+    S1 --> N11
+    N1 --> M0
+    N0 --> M0
+    M0 --> N5
+    N4 --> M1
+    N6 -.-> |trains| M1
+    M1 --> N9
+    style N0 fill:#ECEFF1,stroke:#90A4AE
+    style N1 fill:#ECEFF1,stroke:#90A4AE
+    style N2 fill:#ECEFF1,stroke:#90A4AE
+    style N3 fill:#FFEBEB,stroke:#FFC2C2
+    style N4 fill:#B2EBF2,stroke:#00BCD4
+    style N5 fill:#ECEFF1,stroke:#90A4AE
+    style N6 fill:#B2EBF2,stroke:#00BCD4
+    style N7 fill:#ECEFF1,stroke:#90A4AE
+    style N8 fill:#FFEBEB,stroke:#FFC2C2
+    style N9 fill:#FFEBEB,stroke:#FFC2C2
+    style N10 fill:#ECEFF1,stroke:#90A4AE
+    style N11 fill:#ECEFF1,stroke:#90A4AE
+    style N12 fill:#B2EBF2,stroke:#00BCD4
+    style N13 fill:#FFEBEB,stroke:#FFC2C2
+    style N14 fill:#ECEFF1,stroke:#90A4AE
+    style N15 fill:#FFEBEB,stroke:#FFC2C2
+    style N16 fill:#ECEFF1,stroke:#90A4AE
+    style N17 fill:#FFEBEB,stroke:#FFC2C2
+    style N18 fill:#FFEBEB,stroke:#FFC2C2
+    style S0 fill:#ECEFF1,stroke:#90A4AE
+    style S1 fill:#B2EBF2,stroke:#00BCD4
+    style M0 fill:#ECEFF1,stroke:#90A4AE
+    style M1 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_0 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_1 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_0 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_1 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_2 fill:#FFEBEB,stroke:#FFC2C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_173.txt b/train/mermaid/hard/mermaid_173.txt
new file mode 100644
index 0000000000000000000000000000000000000000..79af2703feff1bc713fbfac8eec2708d19cb9744
--- /dev/null
+++ b/train/mermaid/hard/mermaid_173.txt
@@ -0,0 +1,35 @@
+<Access Control, connectedTo, Insider Threat Detection>
+<Access Control, partOf, Identity Management>
+<Application Security, connectedTo, Zero Trust Architecture>
+<Dark Web Monitoring, connectedTo, Security Policy Development>
+<Dark Web Monitoring, partOf, Disaster Recovery Planning>
+<Digital Forensics, connectedTo, Malware Analysis>
+<Digital Forensics, partOf, Identity Management>
+<Firewall Configuration, connectedTo, Application Security>
+<Firewall Configuration, yes, Threat Intelligence Gathering>
+<Insider Threat Detection, partOf, Identity Management>
+<Insider Threat Detection, yes, Supply Chain Security>
+<Malware Analysis, connectedTo, Access Control>
+<Malware Analysis, partOf, Identity Management>
+<Penetration Testing, connectedTo, Web Application Firewall Deployment>
+<Penetration Testing, partOf, Disaster Recovery Planning>
+<Physical Security Integration, connectedTo, Application Security>
+<Physical Security Integration, connectedTo, Digital Forensics>
+<Physical Security Integration, connectedTo, Firewall Configuration>
+<Physical Security Integration, connectedTo, Threat Intelligence Gathering>
+<Physical Security Integration, connectedTo, Web Application Firewall Deployment>
+<Physical Security Integration, connectedTo, Zero Trust Architecture>
+<Physical Security Integration, no, Dark Web Monitoring>
+<Security Policy Development, connectedTo, Penetration Testing>
+<Security Policy Development, partOf, Disaster Recovery Planning>
+<Supply Chain Security, connectedTo, Application Security>
+<Supply Chain Security, connectedTo, Physical Security Integration>
+<Supply Chain Security, connectedTo, Threat Intelligence Gathering>
+<Threat Intelligence Gathering, connectedTo, Web Application Firewall Deployment>
+<Threat Intelligence Gathering, connectedTo, Zero Trust Architecture>
+<Threat Intelligence Gathering, yes, Application Security>
+<Zero Trust Architecture, connectedTo, Web Application Firewall Deployment>
+<start, connectedTo, Application Security>
+<start, connectedTo, Firewall Configuration>
+<start, connectedTo, Supply Chain Security>
+<start, no, Application Security>
diff --git a/train/mermaid/hard/mermaid_174.mmd b/train/mermaid/hard/mermaid_174.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ddc548a01153deede96f36b2bd0ee6013b640846
--- /dev/null
+++ b/train/mermaid/hard/mermaid_174.mmd
@@ -0,0 +1,136 @@
+graph RL
+    N0([start])
+    N1[Cryptography Implementation]
+    N2(Web Application Firewall Deployment)
+    N3(Mobile Security)
+    N4[(Antivirus Management)]
+    N5[[Identity Management]]
+    N6[(Security Audit)]
+    N7[Access Control]
+    N8{Network Security}
+    N9(Threat Detection)
+    N10([Incident Response])
+    N11{Compliance Monitoring}
+    N12[Endpoint Protection]
+    N13[[Risk Management Framework]]
+    N14(Security Patch Management)
+    N15([Data Encryption])
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Penetration Testing
+        nest0_0([Security Policy Development])
+        nest0_1[(Threat Intelligence Gathering)]
+        nest0_2[[Supply Chain Security]]
+    end
+    subgraph IoT Security
+        nest1_0[(Security Awareness Training)]
+        nest1_1[[Data Loss Prevention]]
+        nest1_2[/Dark Web Monitoring/]
+        nest1_3[(Intrusion Prevention)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 -.-> |detects| N15
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N13 --> nest0_0
+    nest0_2 -.-> N13
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N3 --> nest1_0
+    nest1_3 --> N15
+    N8 -.-> S1
+    S1 -.-> N14
+    S1 -.-> N11
+    S1 --> N13
+    N0 --> S2
+    S2 -.-> N8
+    S2 -.-> N7
+    N7 --> M0
+    N5 --> M0
+    M0 --> N10
+    N0 --> M1
+    N7 --> M1
+    N2 --> M1
+    M1 -.-> N10
+    style N0 fill:#EFE6FF,stroke:#C2B2F0
+    style N1 fill:#E8EAF6,stroke:#7986CB
+    style N2 fill:#FFF9C4,stroke:#FFEB3B
+    style N3 fill:#E8EAF6,stroke:#7986CB
+    style N4 fill:#E8EAF6,stroke:#7986CB
+    style N5 fill:#E8EAF6,stroke:#7986CB
+    style N6 fill:#EFE6FF,stroke:#C2B2F0
+    style N7 fill:#EFE6FF,stroke:#C2B2F0
+    style N8 fill:#EFE6FF,stroke:#C2B2F0
+    style N9 fill:#E8EAF6,stroke:#7986CB
+    style N10 fill:#EFE6FF,stroke:#C2B2F0
+    style N11 fill:#E8EAF6,stroke:#7986CB
+    style N12 fill:#EFE6FF,stroke:#C2B2F0
+    style N13 fill:#E8EAF6,stroke:#7986CB
+    style N14 fill:#EFE6FF,stroke:#C2B2F0
+    style N15 fill:#EFE6FF,stroke:#C2B2F0
+    style S1 fill:#EFE6FF,stroke:#C2B2F0
+    style S2 fill:#E8EAF6,stroke:#7986CB
+    style M0 fill:#EFE6FF,stroke:#C2B2F0
+    style M1 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_1 fill:#EFE6FF,stroke:#C2B2F0
+    style nest0_2 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_0 fill:#E8EAF6,stroke:#7986CB
+    style nest1_1 fill:#E8EAF6,stroke:#7986CB
+    style nest1_2 fill:#E8EAF6,stroke:#7986CB
+    style nest1_3 fill:#EFE6FF,stroke:#C2B2F0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFEB3B,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_179.txt b/train/mermaid/hard/mermaid_179.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2a16627ddcacdd885c8f964ec83909addeec8765
--- /dev/null
+++ b/train/mermaid/hard/mermaid_179.txt
@@ -0,0 +1,44 @@
+<Automated Vacuum Cleaning, connectedTo, Guest Access Management>
+<Automated Vacuum Cleaning, partOf, Security Alert>
+<Centralized Hub Configuration, connectedTo, Home Security System Activation>
+<Centralized Hub Configuration, connectedTo, Lighting Automation>
+<Child Monitoring, connectedTo, Energy Monitoring>
+<Child Monitoring, connectedTo, end>
+<Curtain Automation, connectedTo, Child Monitoring>
+<Curtain Automation, connectedTo, Door Lock Management>
+<Curtain Automation, connectedTo, Garage Door Control>
+<Curtain Automation, connectedTo, Irrigation System Control>
+<Curtain Automation, connectedTo, Personalized Comfort Settings>
+<Device Pairing, connectedTo, Curtain Automation>
+<Device Pairing, connectedTo, Smart Plug Management>
+<Door Lock Management, connectedTo, Irrigation System Control>
+<Elderly Care Monitoring, schedules, Child Monitoring>
+<Emergency Service Connection, connectedTo, Energy Consumption Optimization>
+<Emergency Service Connection, connectedTo, Irrigation System Control>
+<Energy Consumption Optimization, connectedTo, Garage Door Control>
+<Energy Consumption Optimization, connectedTo, Irrigation System Control>
+<Energy Consumption Optimization, connectedTo, Lighting Automation>
+<Energy Monitoring, connectedTo, Leak Detection>
+<Energy Monitoring, partOf, App Control>
+<Garage Door Control, connectedTo, Personalized Comfort Settings>
+<Guest Access Management, connectedTo, Energy Consumption Optimization>
+<Guest Access Management, partOf, Security Alert>
+<Home Security System Activation, connectedTo, Emergency Service Connection>
+<Home Security System Activation, connectedTo, Irrigation System Control>
+<Home Security System Activation, connectedTo, Lighting Automation>
+<Irrigation System Control, connectedTo, Garage Door Control>
+<Leak Detection, connectedTo, Thermostat Adjustment>
+<Leak Detection, partOf, App Control>
+<Lighting Automation, measures, Thermostat Adjustment>
+<Personalized Comfort Settings, connectedTo, Elderly Care Monitoring>
+<Power Outage Notification, connectedTo, Centralized Hub Configuration>
+<Remote Control, connectedTo, Power Outage Notification>
+<Scene Creation, connectedTo, Remote Control>
+<Smart Appliance Control, connectedTo, Device Pairing>
+<Smart Appliance Control, connectedTo, Door Lock Management>
+<Smart Appliance Control, connectedTo, Irrigation System Control>
+<Smart Plug Management, interacts, Automated Vacuum Cleaning>
+<Smart Plug Management, partOf, Security Alert>
+<Thermostat Adjustment, connectedTo, Garage Door Control>
+<Thermostat Adjustment, connectedTo, Smart Appliance Control>
+<start, connectedTo, Scene Creation>
diff --git a/train/mermaid/hard/mermaid_18.mmd b/train/mermaid/hard/mermaid_18.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..23a9835fc63b97acddb957a51eed83e562c74e13
--- /dev/null
+++ b/train/mermaid/hard/mermaid_18.mmd
@@ -0,0 +1,99 @@
+graph BT
+    N0([start])
+    N1([Design Review])
+    N2[[Logistics Planning]]
+    N3[Serialization]
+    N4[Painting]
+    N5[(Shipping)]
+    N6(Assembly)
+    N7[Inventory Check]
+    N8[(Maintenance)]
+    N9([Supplier Qualification])
+    N10(Yield Optimization)
+    N11(Batch Tracking)
+    N12[Machine Calibration]
+    N13[[Procurement]]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Factory Layout Planning
+        nest0_0[Automated Assembly]
+        nest0_1(Recycling Process)
+        nest0_2[Component Sourcing]
+        nest0_3([Automated Guided Vehicle Operation])
+    end
+    subgraph Predictive Maintenance
+        nest1_0[(Inspection)]
+        nest1_1[Tool Setup]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> |no| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N7 --> nest0_0
+    nest0_3 --> N11
+    nest1_0 -.-> nest1_1
+    N1 -.-> nest1_0
+    nest1_1 --> N12
+    N3 -.-> S0
+    S0 -.-> N7
+    S0 --> N10
+    S0 -.-> N14
+    N1 --> S1
+    S1 -.-> N4
+    S1 --> N7
+    N4 --> M0
+    N0 --> M0
+    N3 -.-> M0
+    M0 -.-> N8
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#C8E6C9,stroke:#4CAF50
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#AABEC6,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_180.mmd b/train/mermaid/hard/mermaid_180.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..160e0bc60838d1f33ca9cdc3730b698d887e770f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_180.mmd
@@ -0,0 +1,112 @@
+graph LR
+    N0([start])
+    N1[Garage Door Control]
+    N2{Water Heater Control}
+    N3([Intercom System])
+    N4[(Voice Command)]
+    N5(Scene Creation)
+    N6(Lighting Automation)
+    N7[Curtain Automation]
+    N8[Automated Vacuum Cleaning]
+    N9([Remote Control])
+    N10[(Video Surveillance)]
+    N11[(Pet Feeder Automation)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Personalized Comfort Settings
+        nest0_0[(App Control)]
+        nest0_1([Leak Detection])
+        nest0_2[Doorbell Camera Alert]
+    end
+    subgraph Guest Access Management
+        nest1_0([Energy Monitoring])
+        nest1_1[Home Security System Activation]
+        nest1_2(Sound System Integration)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> |no| N3
+    N3 --> |no| N4
+    N4 -.-> N5
+    N5 -.-> |no| N6
+    N6 --> |no| N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 -.-> |yes| nest0_1
+    nest0_1 --> nest0_2
+    N2 --> nest0_0
+    nest0_2 --> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N10 -.-> nest1_0
+    nest1_2 -.-> N4
+    N6 --> S0
+    S0 -.-> N9
+    S0 --> N11
+    S0 -.-> N10
+    S0 --> N8
+    N3 --> S1
+    S1 --> N6
+    S1 -.-> N5
+    S1 --> N10
+    S1 -.-> N8
+    N0 -.-> S2
+    S2 -.-> N4
+    S2 --> N6
+    N2 --> M0
+    N1 --> |no| M0
+    M0 --> N4
+    N2 --> M1
+    N5 --> M1
+    N7 --> M1
+    M1 --> N11
+    style S0 fill:#D3F7F9,stroke:#80DDEA
+    style S1 fill:#D6D9F0,stroke:#9FA9E1
+    style S2 fill:#D6D9F0,stroke:#9FA9E1
+    style M0 fill:#D3F7F9,stroke:#80DDEA
+    style M1 fill:#D6D9F0,stroke:#9FA9E1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_187.mmd b/train/mermaid/hard/mermaid_187.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0dbd1c359b384ffa46d50fdf95f69e7d7045448f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_187.mmd
@@ -0,0 +1,107 @@
+graph TD
+    N0([start])
+    N1[(Noise Pollution Monitoring)]
+    N2[(Public Health Monitoring)]
+    N3[[Intelligent Public Safety Cameras]]
+    N4[Emergency Response System]
+    N5(Cybersecurity for Infrastructure)
+    N6[/Air Quality Index Reporting/]
+    N7([Digital Kiosk Information])
+    N8[Sustainable Resource Management]
+    N9[Environmental Sensor Network]
+    N10(Smart Lighting)
+    N11{Citizen Feedback Loop}
+    N12{Urban Planning Data Analysis}
+    N13(Energy Grid Management)
+    N14(Water Management System)
+    N15[(Renewable Energy Integration)]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Disaster Resilience Planning
+        nest0_0[(Smart Water Meters)]
+        nest0_1(Smart Street Furniture)
+        nest0_2[/Infrastructure Maintenance Alert/]
+    end
+    subgraph Smart Grid Security
+        nest1_0[(Data Privacy Protection)]
+        nest1_1[Predictive Maintenance for Utilities]
+        nest1_2[/Public Wi_Fi Deployment/]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> |no| N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> |yes| N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N7 --> nest0_0
+    nest0_2 --> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N11 -.-> nest1_0
+    nest1_2 --> N16
+    N12 -.-> S0
+    S0 -.-> N14
+    S0 -.-> N15
+    N8 --> S1
+    S1 -.-> N10
+    S1 -.-> N13
+    S1 --> N16
+    S1 -.-> N12
+    N0 --> M0
+    N6 --> M0
+    N1 -.-> M0
+    M0 -.-> N9
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#F3E5F5,stroke:#BA68C8
+    style M0 fill:#F3E5F5,stroke:#BA68C8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFB2A5,stroke-width:2px,fill:none;
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+    linkStyle 11 stroke:#BA68C8,stroke-width:2px,fill:none;
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+    linkStyle 15 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#B8C0F5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_188.txt b/train/mermaid/hard/mermaid_188.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8b293388f7ca81bc77d55fb5e5aa95d757e32291
--- /dev/null
+++ b/train/mermaid/hard/mermaid_188.txt
@@ -0,0 +1,38 @@
+<Citizen Engagement Platform, connectedTo, Infrastructure Maintenance Alert>
+<Citizen Feedback Loop, connectedTo, Public Safety Monitoring>
+<Citizen Feedback Loop, partOf, Waste Management Optimization>
+<Cybersecurity for Infrastructure, connectedTo, Smart Building Integration>
+<Data Privacy Protection, connectedTo, Cybersecurity for Infrastructure>
+<Data Privacy Protection, connectedTo, Smart Building Integration>
+<E_governance Services, connectedTo, Public Transport Tracking>
+<Energy Grid Management, connectedTo, Citizen Engagement Platform>
+<Green Space Management, connectedTo, Citizen Feedback Loop>
+<Green Space Management, partOf, Waste Management Optimization>
+<Public Health Monitoring, connectedTo, Smart Street Furniture>
+<Public Health Monitoring, partOf, City_wide Sensor Network Deployment>
+<Public Safety Monitoring, connectedTo, Energy Grid Management>
+<Public Safety Monitoring, partOf, Waste Management Optimization>
+<Public Transport Tracking, connectedTo, Energy Grid Management>
+<Public Wi_Fi Deployment, connectedTo, Sustainable Resource Management>
+<Smart Building Integration, connectedTo, E_governance Services>
+<Smart Building Integration, connectedTo, Infrastructure Maintenance Alert>
+<Smart Building Integration, connectedTo, Public Wi_Fi Deployment>
+<Smart Building Integration, connectedTo, Traffic Flow Optimization>
+<Smart Education Initiatives, connectedTo, Green Space Management>
+<Smart Education Initiatives, partOf, Waste Management Optimization>
+<Smart Parking, connectedTo, E_governance Services>
+<Smart Parking, connectedTo, Smart Education Initiatives>
+<Smart Street Furniture, connectedTo, Urban Mobility Solutions>
+<Smart Street Furniture, partOf, City_wide Sensor Network Deployment>
+<Sustainable Resource Management, connectedTo, Urban Planning Data Analysis>
+<Traffic Flow Optimization, connectedTo, Public Health Monitoring>
+<Traffic Flow Optimization, partOf, City_wide Sensor Network Deployment>
+<Urban Mobility Solutions, connectedTo, Infrastructure Maintenance Alert>
+<Urban Mobility Solutions, partOf, City_wide Sensor Network Deployment>
+<Urban Planning Data Analysis, connectedTo, Citizen Engagement Platform>
+<Urban Planning Data Analysis, connectedTo, Energy Grid Management>
+<Urban Planning Data Analysis, connectedTo, Infrastructure Maintenance Alert>
+<Urban Planning Data Analysis, connectedTo, Public Transport Tracking>
+<Urban Planning Data Analysis, connectedTo, Smart Parking>
+<start, connectedTo, Data Privacy Protection>
+<start, connectedTo, Smart Building Integration>
diff --git a/train/mermaid/hard/mermaid_189.mmd b/train/mermaid/hard/mermaid_189.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0edb55b54baccae2452468cd3c00a57e2f141701
--- /dev/null
+++ b/train/mermaid/hard/mermaid_189.mmd
@@ -0,0 +1,108 @@
+graph TD
+    N0([Public Health Monitoring])
+    N1[Public Transport Tracking]
+    N2[Smart Parking]
+    N3[/Smart Street Furniture/]
+    N4[[Public Wi_Fi Deployment]]
+    N5[City_wide Sensor Network Deployment]
+    N6[/Water Management System/]
+    N7[[Traffic Flow Optimization]]
+    N8(Smart Traffic Lights)
+    N9[(Urban Mobility Solutions)]
+    N10[[Public Safety Monitoring]]
+    N11(Waste Recycling Program)
+    N12[(Air Quality Index Reporting)]
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Smart Education Initiatives
+        nest0_0{Emergency Response System}
+        nest0_1(Smart Water Meters)
+    end
+    subgraph Citizen Feedback Loop
+        nest1_0{E_governance Services}
+        nest1_1[Disaster Resilience Planning]
+        nest1_2(Crowd Management)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> |services| N3
+    N3 --> |informs| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 -.-> |develops| nest0_1
+    N8 --> nest0_0
+    nest0_1 -.-> N5
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N7 -.-> nest1_0
+    nest1_2 --> N4
+    N6 -.-> S1
+    S1 --> |partners| N10
+    S1 -.-> N11
+    N2 --> S2
+    S2 -.-> N11
+    S2 -.-> N8
+    N5 --> M0
+    N0 -.-> M0
+    N2 --> |sustains| M0
+    M0 --> N10
+    N6 -.-> N8
+    style N0 fill:#C9EFEC,stroke:#6FE1D5
+    style N1 fill:#FCE4EC,stroke:#F06292
+    style N2 fill:#B3E5FC,stroke:#03A9F4
+    style N3 fill:#C9EFEC,stroke:#6FE1D5
+    style N4 fill:#C9EFEC,stroke:#6FE1D5
+    style N5 fill:#C9EFEC,stroke:#6FE1D5
+    style N6 fill:#C9EFEC,stroke:#6FE1D5
+    style N7 fill:#B3E5FC,stroke:#03A9F4
+    style N8 fill:#C9EFEC,stroke:#6FE1D5
+    style N9 fill:#B3E5FC,stroke:#03A9F4
+    style N10 fill:#FCE4EC,stroke:#F06292
+    style N11 fill:#FCE4EC,stroke:#F06292
+    style N12 fill:#C9EFEC,stroke:#6FE1D5
+    style S1 fill:#B3E5FC,stroke:#03A9F4
+    style S2 fill:#B3E5FC,stroke:#03A9F4
+    style M0 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_0 fill:#FCE4EC,stroke:#F06292
+    style nest0_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#FCE4EC,stroke:#F06292
+    style nest1_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_2 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_189.txt b/train/mermaid/hard/mermaid_189.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3dadf16eafb43469ca17845c368637866389402b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_189.txt
@@ -0,0 +1,32 @@
+<City_wide Sensor Network Deployment, connectedTo, Public Safety Monitoring>
+<City_wide Sensor Network Deployment, connectedTo, Water Management System>
+<Crowd Management, connectedTo, Public Wi_Fi Deployment>
+<Crowd Management, partOf, Citizen Feedback Loop>
+<Disaster Resilience Planning, connectedTo, Crowd Management>
+<Disaster Resilience Planning, partOf, Citizen Feedback Loop>
+<E_governance Services, connectedTo, Disaster Resilience Planning>
+<E_governance Services, partOf, Citizen Feedback Loop>
+<Emergency Response System, develops, Smart Water Meters>
+<Emergency Response System, partOf, Smart Education Initiatives>
+<Public Health Monitoring, connectedTo, Public Safety Monitoring>
+<Public Health Monitoring, connectedTo, Public Transport Tracking>
+<Public Safety Monitoring, connectedTo, Waste Recycling Program>
+<Public Transport Tracking, connectedTo, Smart Parking>
+<Public Wi_Fi Deployment, connectedTo, City_wide Sensor Network Deployment>
+<Smart Parking, connectedTo, Smart Traffic Lights>
+<Smart Parking, connectedTo, Waste Recycling Program>
+<Smart Parking, services, Smart Street Furniture>
+<Smart Parking, sustains, Public Safety Monitoring>
+<Smart Street Furniture, informs, Public Wi_Fi Deployment>
+<Smart Traffic Lights, connectedTo, Emergency Response System>
+<Smart Traffic Lights, connectedTo, Urban Mobility Solutions>
+<Smart Water Meters, connectedTo, City_wide Sensor Network Deployment>
+<Smart Water Meters, partOf, Smart Education Initiatives>
+<Traffic Flow Optimization, connectedTo, E_governance Services>
+<Traffic Flow Optimization, connectedTo, Smart Traffic Lights>
+<Urban Mobility Solutions, connectedTo, Public Safety Monitoring>
+<Waste Recycling Program, connectedTo, Air Quality Index Reporting>
+<Water Management System, connectedTo, Smart Traffic Lights>
+<Water Management System, connectedTo, Traffic Flow Optimization>
+<Water Management System, connectedTo, Waste Recycling Program>
+<Water Management System, partners, Public Safety Monitoring>
diff --git a/train/mermaid/hard/mermaid_19.mmd b/train/mermaid/hard/mermaid_19.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4ef066b23f4a1ad9395f3ac707c65da63e96fe0f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_19.mmd
@@ -0,0 +1,140 @@
+graph TD
+    N0([Work_in_Progress Monitoring])
+    N1[Automated Assembly]
+    N2(Environmental Compliance)
+    N3[[Production Scheduling]]
+    N4[Parts Replacement]
+    N5([Ergonomics Assessment])
+    N6([Inspection])
+    N7([Automated Guided Vehicle Operation])
+    N8[/Supplier Qualification/]
+    N9[[Yield Optimization]]
+    N10(Factory Layout Planning)
+    N11[(Product Design)]
+    N12(Recycling Process)
+    N13(Assembly)
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Workflow Optimization
+        nest0_0[[Welding]]
+        nest0_1([Component Sourcing])
+        nest0_2([Supply Chain Synchronization])
+    end
+    subgraph Raw Material
+        nest1_0[/Final Testing/]
+        nest1_1[/Procurement/]
+        nest1_2(Defect Analysis)
+        nest1_3(Safety Audit)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N10 --> nest0_0
+    nest0_2 --> N11
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N4 --> nest1_0
+    nest1_3 --> N1
+    N0 --> S0
+    S0 --> N10
+    S0 --> N14
+    S0 --> N3
+    N4 --> S1
+    S1 -.-> N8
+    S1 --> N14
+    S1 -.-> N6
+    N4 -.-> M0
+    N2 -.-> |plans| M0
+    N1 --> M0
+    N3 -.-> M0
+    M0 --> N7
+    N0 -.-> M2
+    N2 --> M2
+    N6 -.-> M2
+    N1 -.-> M2
+    M2 -.-> N9
+    style N0 fill:#FFF8E1,stroke:#FFD54F
+    style N1 fill:#EDF5F3,stroke:#A1D7CD
+    style N2 fill:#FFEBEE,stroke:#E57373
+    style N3 fill:#EDF5F3,stroke:#A1D7CD
+    style N4 fill:#FFEBEE,stroke:#E57373
+    style N5 fill:#FFF8E1,stroke:#FFD54F
+    style N6 fill:#EDF5F3,stroke:#A1D7CD
+    style N7 fill:#FFEBEE,stroke:#E57373
+    style N8 fill:#FFF8E1,stroke:#FFD54F
+    style N9 fill:#EDF5F3,stroke:#A1D7CD
+    style N10 fill:#EDF5F3,stroke:#A1D7CD
+    style N11 fill:#EDF5F3,stroke:#A1D7CD
+    style N12 fill:#FFF8E1,stroke:#FFD54F
+    style N13 fill:#FFEBEE,stroke:#E57373
+    style N14 fill:#EDF5F3,stroke:#A1D7CD
+    style S0 fill:#EDF5F3,stroke:#A1D7CD
+    style S1 fill:#FFF8E1,stroke:#FFD54F
+    style M0 fill:#EDF5F3,stroke:#A1D7CD
+    style M2 fill:#FFF8E1,stroke:#FFD54F
+    style nest0_0 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_1 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_2 fill:#FFEBEE,stroke:#E57373
+    style nest1_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_1 fill:#FFEBEE,stroke:#E57373
+    style nest1_2 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_3 fill:#EDF5F3,stroke:#A1D7CD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_190.mmd b/train/mermaid/hard/mermaid_190.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6a56d8b6900f8287c74a7911c1fbb8700f808991
--- /dev/null
+++ b/train/mermaid/hard/mermaid_190.mmd
@@ -0,0 +1,140 @@
+graph BT
+    N0([start])
+    N1[/Renewable Energy Integration/]
+    N2[(Air Quality Index Reporting)]
+    N3[Smart Traffic Lights]
+    N4[[Smart Grid Security]]
+    N5[Public Transport Tracking]
+    N6[[Smart Street Furniture]]
+    N7{Water Management System}
+    N8[Citizen Feedback Loop]
+    N9[Public Health Monitoring]
+    N10[/Data Privacy Protection/]
+    N11[/City_wide Sensor Network Deployment/]
+    N12[/Predictive Maintenance for Utilities/]
+    N13[/Infrastructure Maintenance Alert/]
+    N14[/Environmental Sensor Network/]
+    N15[[Emergency Response System]]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Urban Planning Data Analysis
+        nest0_0[/Smart Lighting/]
+        nest0_1[[Crowd Management]]
+        nest0_2[Green Space Management]
+        nest0_3([Public Safety Monitoring])
+    end
+    subgraph Digital Kiosk Information
+        nest1_0[/Disaster Resilience Planning/]
+        nest1_1[[Public Wi_Fi Deployment]]
+        nest1_2[Cybersecurity for Infrastructure]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> |transports| N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N14 -.-> nest0_0
+    nest0_3 --> N12
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N12 -.-> nest1_0
+    nest1_2 --> N10
+    N5 --> S0
+    S0 --> N7
+    S0 --> N12
+    N9 --> S1
+    S1 -.-> N12
+    S1 -.-> N14
+    N2 -.-> M0
+    N3 -.-> M0
+    N0 -.-> M0
+    M0 -.-> N9
+    N1 -.-> |analyzes| M1
+    N8 --> M1
+    N5 --> M1
+    M1 --> N14
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#FCE4EC,stroke:#F06292
+    style N2 fill:#E8F0FF,stroke:#A2D0FF
+    style N3 fill:#FDFCEB,stroke:#EAEFA5
+    style N4 fill:#FDFCEB,stroke:#EAEFA5
+    style N5 fill:#FDFCEB,stroke:#EAEFA5
+    style N6 fill:#E8F0FF,stroke:#A2D0FF
+    style N7 fill:#E8F0FF,stroke:#A2D0FF
+    style N8 fill:#FDFCEB,stroke:#EAEFA5
+    style N9 fill:#E8F0FF,stroke:#A2D0FF
+    style N10 fill:#FDFCEB,stroke:#EAEFA5
+    style N11 fill:#FCE4EC,stroke:#F06292
+    style N12 fill:#FDFCEB,stroke:#EAEFA5
+    style N13 fill:#FCE4EC,stroke:#F06292
+    style N14 fill:#E8F0FF,stroke:#A2D0FF
+    style N15 fill:#FDFCEB,stroke:#EAEFA5
+    style N16 fill:#FCE4EC,stroke:#F06292
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#FDFCEB,stroke:#EAEFA5
+    style M0 fill:#FCE4EC,stroke:#F06292
+    style M1 fill:#FCE4EC,stroke:#F06292
+    style nest0_0 fill:#FCE4EC,stroke:#F06292
+    style nest0_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_2 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_3 fill:#FDFCEB,stroke:#EAEFA5
+    style nest1_0 fill:#FDFCEB,stroke:#EAEFA5
+    style nest1_1 fill:#FCE4EC,stroke:#F06292
+    style nest1_2 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_191.txt b/train/mermaid/hard/mermaid_191.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e4dac03480b144edd07885b2f83a226b259256a9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_191.txt
@@ -0,0 +1,37 @@
+<Citizen Engagement Platform, yes, Digital Kiosk Information>
+<Cybersecurity for Infrastructure, connectedTo, Energy Grid Management>
+<Cybersecurity for Infrastructure, partOf, Citizen Feedback Loop>
+<Data Privacy Protection, connectedTo, Smart Parking>
+<Digital Kiosk Information, connectedTo, Public Wi_Fi Deployment>
+<Digital Kiosk Information, connectedTo, Smart Parking>
+<Digital Kiosk Information, connectedTo, Smart Traffic Lights>
+<Digital Kiosk Information, connectedTo, Water Management System>
+<Digital Kiosk Information, no, Data Privacy Protection>
+<Digital Kiosk Information, no, Urban Agriculture Support>
+<Emergency Response System, connectedTo, Green Space Management>
+<Energy Grid Management, connectedTo, Emergency Response System>
+<Energy Grid Management, partOf, Citizen Feedback Loop>
+<Green Space Management, connectedTo, Public Safety Monitoring>
+<Infrastructure Maintenance Alert, connectedTo, Smart Water Meters>
+<Public Wi_Fi Deployment, connectedTo, Infrastructure Maintenance Alert>
+<Smart Building Integration, connectedTo, Sustainable Resource Management>
+<Smart Building Integration, partOf, Smart Education Initiatives>
+<Smart Grid Security, connectedTo, Traffic Flow Optimization>
+<Smart Grid Security, partOf, Smart Education Initiatives>
+<Smart Parking, connectedTo, Public Safety Monitoring>
+<Smart Parking, connectedTo, Public Wi_Fi Deployment>
+<Smart Parking, connectedTo, Urban Agriculture Support>
+<Smart Parking, no, Infrastructure Maintenance Alert>
+<Smart Traffic Lights, connectedTo, Cybersecurity for Infrastructure>
+<Smart Traffic Lights, partOf, Citizen Feedback Loop>
+<Smart Water Meters, connectedTo, Smart Grid Security>
+<Smart Water Meters, no, Emergency Response System>
+<Sustainable Resource Management, connectedTo, Public Wi_Fi Deployment>
+<Sustainable Resource Management, partOf, Smart Education Initiatives>
+<Traffic Flow Optimization, connectedTo, Smart Building Integration>
+<Traffic Flow Optimization, partOf, Smart Education Initiatives>
+<Urban Agriculture Support, connectedTo, Public Wi_Fi Deployment>
+<Water Management System, connectedTo, Data Privacy Protection>
+<Water Management System, connectedTo, Smart Parking>
+<start, connectedTo, Citizen Engagement Platform>
+<start, connectedTo, Public Wi_Fi Deployment>
diff --git a/train/mermaid/hard/mermaid_192.mmd b/train/mermaid/hard/mermaid_192.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b8f7b7aee2d1d632047566eefec2ee372d4ef5b2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_192.mmd
@@ -0,0 +1,97 @@
+graph LR
+    N0([start])
+    N1[Urban Agriculture Support]
+    N2[Citizen Feedback Loop]
+    N3([Urban Mobility Solutions])
+    N4{Smart Grid Security}
+    N5{Disaster Resilience Planning}
+    N6(Citizen Engagement Platform)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Public Health Monitoring
+        nest0_0[/Digital Twins of City/]
+        nest0_1([Environmental Sensor Network])
+        nest0_2[[Noise Pollution Monitoring]]
+        nest0_3[[Urban Planning Data Analysis]]
+    end
+    subgraph Cybersecurity for Infrastructure
+        nest1_0[(Sustainable Resource Management)]
+        nest1_1[[Smart Building Integration]]
+        nest1_2(Energy Grid Management)
+        nest1_3(Public Safety Monitoring)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> |yes| N4
+    N4 --> N5
+    N5 --> N6
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N2 -.-> nest0_0
+    nest0_3 --> N2
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> N1
+    N2 -.-> S0
+    S0 --> N6
+    S0 -.-> N4
+    N3 --> S1
+    S1 --> N6
+    S1 -.-> N5
+    N3 -.-> S2
+    S2 -.-> N6
+    S2 -.-> N5
+    N1 -.-> M0
+    N4 --> M0
+    N0 --> M0
+    M0 --> N6
+    N1 --> M2
+    N0 --> M2
+    N2 -.-> M2
+    M2 -.-> N4
+    style S0 fill:#ECCFF5,stroke:#CD8FF2
+    style S1 fill:#F9FBE7,stroke:#DCE775
+    style S2 fill:#F9FBE7,stroke:#DCE775
+    style M0 fill:#ECCFF5,stroke:#CD8FF2
+    style M2 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#DCE775,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_193.mmd b/train/mermaid/hard/mermaid_193.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d4c4a319ec73827c24a6f2122656e47ebc7b8619
--- /dev/null
+++ b/train/mermaid/hard/mermaid_193.mmd
@@ -0,0 +1,125 @@
+graph RL
+    N0([start])
+    N1(Vaccine Development)
+    N2[Protein Engineering]
+    N3{Structural Biology}
+    N4([Monoclonal Antibody Production])
+    N5[/Bioreactor Operation/]
+    N6[(Drug Discovery)]
+    N7([Tissue Engineering])
+    N8(Pharmacogenomics)
+    N9[[Biosafety Protocol]]
+    N10{Cell Culture}
+    N11[[Gene Sequencing]]
+    N12[[Computational Biology Modeling]]
+    N13[(Biomarker Discovery)]
+    N14[[CRISPR Technology Application]]
+    N15[Synthetic Biology Design]
+    N16[Genomic Editing]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Drug Repurposing
+        nest0_0[(Gene Therapy Delivery)]
+        nest0_1{Bioimaging}
+    end
+    subgraph Clinical Trial Design
+        nest1_0[[Clinical Data Interpretation]]
+        nest1_1[Environmental Bioremediation]
+        nest1_2[/Microbial Fermentation/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N13 --> nest1_0
+    nest1_2 --> N1
+    N0 --> S0
+    S0 --> N12
+    S0 -.-> N10
+    N6 -.-> S1
+    S1 -.-> N12
+    S1 --> N8
+    S1 -.-> N13
+    N7 --> M0
+    N3 -.-> M0
+    N4 --> M0
+    N6 -.-> M0
+    M0 --> N9
+    N0 --> M1
+    N1 --> M1
+    N2 -.-> M1
+    M1 -.-> N4
+    N1 -.-> M2
+    N0 -.-> M2
+    M2 --> N3
+    style S0 fill:#F1F8E9,stroke:#81C784
+    style S1 fill:#FFF8E1,stroke:#FFD54F
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#F1F8E9,stroke:#81C784
+    style M2 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_193.txt b/train/mermaid/hard/mermaid_193.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7d409169de544e1438fc1c45a31a93381fa71a36
--- /dev/null
+++ b/train/mermaid/hard/mermaid_193.txt
@@ -0,0 +1,43 @@
+<Bioimaging, connectedTo, Monoclonal Antibody Production>
+<Bioimaging, partOf, Drug Repurposing>
+<Biomarker Discovery, connectedTo, CRISPR Technology Application>
+<Biomarker Discovery, connectedTo, Clinical Data Interpretation>
+<Bioreactor Operation, connectedTo, Drug Discovery>
+<Biosafety Protocol, connectedTo, Cell Culture>
+<CRISPR Technology Application, connectedTo, Synthetic Biology Design>
+<Cell Culture, connectedTo, Gene Sequencing>
+<Clinical Data Interpretation, connectedTo, Environmental Bioremediation>
+<Clinical Data Interpretation, partOf, Clinical Trial Design>
+<Computational Biology Modeling, connectedTo, Biomarker Discovery>
+<Drug Discovery, connectedTo, Biomarker Discovery>
+<Drug Discovery, connectedTo, Biosafety Protocol>
+<Drug Discovery, connectedTo, Computational Biology Modeling>
+<Drug Discovery, connectedTo, Pharmacogenomics>
+<Drug Discovery, connectedTo, Tissue Engineering>
+<Environmental Bioremediation, connectedTo, Microbial Fermentation>
+<Environmental Bioremediation, partOf, Clinical Trial Design>
+<Gene Sequencing, connectedTo, Computational Biology Modeling>
+<Gene Therapy Delivery, connectedTo, Bioimaging>
+<Gene Therapy Delivery, partOf, Drug Repurposing>
+<Genomic Editing, connectedTo, end>
+<Microbial Fermentation, connectedTo, Vaccine Development>
+<Microbial Fermentation, partOf, Clinical Trial Design>
+<Monoclonal Antibody Production, connectedTo, Bioreactor Operation>
+<Monoclonal Antibody Production, connectedTo, Biosafety Protocol>
+<Pharmacogenomics, connectedTo, Biosafety Protocol>
+<Protein Engineering, connectedTo, Monoclonal Antibody Production>
+<Protein Engineering, connectedTo, Structural Biology>
+<Structural Biology, connectedTo, Biosafety Protocol>
+<Structural Biology, connectedTo, Monoclonal Antibody Production>
+<Synthetic Biology Design, connectedTo, Genomic Editing>
+<Tissue Engineering, connectedTo, Biosafety Protocol>
+<Tissue Engineering, connectedTo, Gene Therapy Delivery>
+<Tissue Engineering, connectedTo, Pharmacogenomics>
+<Vaccine Development, connectedTo, Monoclonal Antibody Production>
+<Vaccine Development, connectedTo, Protein Engineering>
+<Vaccine Development, connectedTo, Structural Biology>
+<start, connectedTo, Cell Culture>
+<start, connectedTo, Computational Biology Modeling>
+<start, connectedTo, Monoclonal Antibody Production>
+<start, connectedTo, Structural Biology>
+<start, connectedTo, Vaccine Development>
diff --git a/train/mermaid/hard/mermaid_194.mmd b/train/mermaid/hard/mermaid_194.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0645682bfee281a9ae8e04739c8640c77a399360
--- /dev/null
+++ b/train/mermaid/hard/mermaid_194.mmd
@@ -0,0 +1,104 @@
+graph LR
+    N0([Biosensor Development])
+    N1[Bioimaging]
+    N2[Stem Cell Research]
+    N3{Preclinical Testing}
+    N4[[Vaccine Development]]
+    N5(Personalized Medicine Formulation)
+    N6[Genomic Editing]
+    N7[(Lab Automation)]
+    N8{Environmental Bioremediation}
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Nanobiotechnology Application
+        nest0_0[Tissue Engineering]
+        nest0_1[Clinical Data Interpretation]
+        nest0_2(Biomanufacturing Scale_up)
+        nest0_3(Bioprocess Optimization)
+    end
+    subgraph Structural Biology
+        nest1_0[[Synthetic Biology Design]]
+        nest1_1{Assay Development}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N3 -.-> nest0_0
+    nest0_3 --> N5
+    nest1_0 --> nest1_1
+    N2 --> nest1_0
+    nest1_1 -.-> N7
+    N0 -.-> S0
+    S0 -.-> N6
+    S0 --> N7
+    N0 -.-> S1
+    S1 -.-> N6
+    S1 -.-> N2
+    S1 -.-> N8
+    N3 -.-> M1
+    N0 -.-> M1
+    M1 -.-> N5
+    N5 --> M2
+    N6 -.-> M2
+    N2 --> M2
+    M2 --> N8
+    style N0 fill:#D0EFEE,stroke:#73C6BC
+    style N1 fill:#D0EFEE,stroke:#73C6BC
+    style N2 fill:#D0EFEE,stroke:#73C6BC
+    style N3 fill:#C8EDFF,stroke:#82DAFF
+    style N4 fill:#D0EFEE,stroke:#73C6BC
+    style N5 fill:#D0EFEE,stroke:#73C6BC
+    style N6 fill:#C8EDFF,stroke:#82DAFF
+    style N7 fill:#D0EFEE,stroke:#73C6BC
+    style N8 fill:#D0EFEE,stroke:#73C6BC
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#C8EDFF,stroke:#82DAFF
+    style M1 fill:#D0EFEE,stroke:#73C6BC
+    style M2 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_1 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_2 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_3 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest1_1 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#42A5F5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_198.txt b/train/mermaid/hard/mermaid_198.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c9180654feb722e28002b34e22de8c4fc92a79c4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_198.txt
@@ -0,0 +1,41 @@
+<Assay Development, connectedTo, Gene Sequencing>
+<Assay Development, connectedTo, end>
+<Bioimaging, connectedTo, Drug Discovery>
+<Bioimaging, connectedTo, end>
+<Bioinformatics Analysis, complies, Biosafety Protocol>
+<Bioinformatics Analysis, connectedTo, Regulatory Submission>
+<Biomarker Discovery, connectedTo, Nanobiotechnology Application>
+<Biomarker Discovery, partOf, Tissue Engineering>
+<Bioprocess Optimization, connectedTo, Environmental Bioremediation>
+<Biosafety Protocol, connectedTo, Pharmacogenomics>
+<CRISPR Technology Application, develops, Lab Automation>
+<Data Management and Analysis, connectedTo, Vaccine Development>
+<Diagnostic Test Development, connectedTo, Monoclonal Antibody Production>
+<Drug Discovery, connectedTo, Data Management and Analysis>
+<Environmental Bioremediation, connectedTo, Assay Development>
+<Ethical Review Board Approval, connectedTo, Biosafety Protocol>
+<Gene Sequencing, connectedTo, Biomarker Discovery>
+<Gene Sequencing, partOf, Tissue Engineering>
+<Gene Therapy Delivery, connectedTo, Bioimaging>
+<Lab Automation, connectedTo, Bioprocess Optimization>
+<Monoclonal Antibody Production, connectedTo, Gene Therapy Delivery>
+<Monoclonal Antibody Production, connectedTo, Protein Engineering>
+<Nanobiotechnology Application, licenses, Environmental Bioremediation>
+<Nanobiotechnology Application, partOf, Tissue Engineering>
+<Personalized Medicine Formulation, connectedTo, Stem Cell Research>
+<Personalized Medicine Formulation, partOf, Intellectual Property Protection>
+<Pharmacogenomics, connectedTo, Diagnostic Test Development>
+<Protein Engineering, connectedTo, Personalized Medicine Formulation>
+<Protein Engineering, partOf, Intellectual Property Protection>
+<Quality Control, connectedTo, Data Management and Analysis>
+<Quality Control, connectedTo, Drug Discovery>
+<Quality Control, connectedTo, Stem Cell Research>
+<Quality Control, connectedTo, end>
+<Quality Control, treats, Biosafety Protocol>
+<Regulatory Submission, connectedTo, Ethical Review Board Approval>
+<Stem Cell Research, connectedTo, Bioinformatics Analysis>
+<Stem Cell Research, connectedTo, CRISPR Technology Application>
+<Stem Cell Research, connectedTo, Ethical Review Board Approval>
+<Vaccine Development, connectedTo, CRISPR Technology Application>
+<Vaccine Development, connectedTo, end>
+<start, connectedTo, Quality Control>
diff --git a/train/mermaid/hard/mermaid_199.mmd b/train/mermaid/hard/mermaid_199.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5fb217c13f0f2341979ef4c9c2d2659d9a78b5ab
--- /dev/null
+++ b/train/mermaid/hard/mermaid_199.mmd
@@ -0,0 +1,142 @@
+graph BT
+    N0([Tissue Engineering])
+    N1{Clinical Data Interpretation}
+    N2[[Preclinical Testing]]
+    N3[[CRISPR Technology Application]]
+    N4[Microbial Fermentation]
+    N5[(Genomic Editing)]
+    N6[Personalized Medicine Formulation]
+    N7(Biomarker Discovery)
+    N8[Clinical Trial Design]
+    N9(Regulatory Submission)
+    N10([Biosensor Development])
+    N11(Monoclonal Antibody Production)
+    N12[[Drug Discovery]]
+    N13[Synthetic Biology Design]
+    N14[(Bioreactor Operation)]
+    N15(Bioimaging)
+    N16[Diagnostic Test Development]
+    N17[[Computational Biology Modeling]]
+    N18([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Cell Culture
+        nest0_0([Ethical Review Board Approval])
+        nest0_1[[Pharmacogenomics]]
+    end
+    subgraph Assay Development
+        nest1_0([Bioprocess Optimization])
+        nest1_1(Nanobiotechnology Application)
+        nest1_2([Drug Repurposing])
+        nest1_3[(Protein Engineering)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> |cultures| N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 -.-> N18
+    nest0_0 --> nest0_1
+    N10 -.-> nest0_0
+    nest0_1 -.-> N3
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 -.-> N16
+    N6 --> S0
+    S0 --> N12
+    S0 --> N18
+    N0 -.-> S1
+    S1 --> N14
+    S1 --> N7
+    N3 --> M0
+    N1 -.-> |validates| M0
+    M0 --> N5
+    N0 --> M1
+    N3 --> |grows| M1
+    N4 -.-> M1
+    M1 -.-> N11
+    style N0 fill:#E1F5FE,stroke:#4FC3F7
+    style N1 fill:#FCE4EC,stroke:#E91E63
+    style N2 fill:#FCE4EC,stroke:#E91E63
+    style N3 fill:#FCE4EC,stroke:#E91E63
+    style N4 fill:#FCE4EC,stroke:#E91E63
+    style N5 fill:#EFEBE9,stroke:#A1887F
+    style N6 fill:#FCE4EC,stroke:#E91E63
+    style N7 fill:#E1F5FE,stroke:#4FC3F7
+    style N8 fill:#EFEBE9,stroke:#A1887F
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#EFEBE9,stroke:#A1887F
+    style N11 fill:#FCE4EC,stroke:#E91E63
+    style N12 fill:#EFEBE9,stroke:#A1887F
+    style N13 fill:#FCE4EC,stroke:#E91E63
+    style N14 fill:#FCE4EC,stroke:#E91E63
+    style N15 fill:#FCE4EC,stroke:#E91E63
+    style N16 fill:#E1F5FE,stroke:#4FC3F7
+    style N17 fill:#E1F5FE,stroke:#4FC3F7
+    style N18 fill:#EFEBE9,stroke:#A1887F
+    style S0 fill:#E1F5FE,stroke:#4FC3F7
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#FCE4EC,stroke:#E91E63
+    style M1 fill:#FCE4EC,stroke:#E91E63
+    style nest0_0 fill:#EFEBE9,stroke:#A1887F
+    style nest0_1 fill:#EFEBE9,stroke:#A1887F
+    style nest1_0 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_1 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_2 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_3 fill:#FCE4EC,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#A1887F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_199.txt b/train/mermaid/hard/mermaid_199.txt
new file mode 100644
index 0000000000000000000000000000000000000000..899fcb94e006f802bcb486b02b5ec08169248202
--- /dev/null
+++ b/train/mermaid/hard/mermaid_199.txt
@@ -0,0 +1,41 @@
+<Bioimaging, connectedTo, Diagnostic Test Development>
+<Biomarker Discovery, connectedTo, Clinical Trial Design>
+<Bioprocess Optimization, connectedTo, Nanobiotechnology Application>
+<Bioprocess Optimization, partOf, Assay Development>
+<Bioreactor Operation, cultures, Bioimaging>
+<Biosensor Development, connectedTo, Ethical Review Board Approval>
+<Biosensor Development, connectedTo, Monoclonal Antibody Production>
+<CRISPR Technology Application, connectedTo, Genomic Editing>
+<CRISPR Technology Application, connectedTo, Microbial Fermentation>
+<CRISPR Technology Application, grows, Monoclonal Antibody Production>
+<Clinical Data Interpretation, connectedTo, Preclinical Testing>
+<Clinical Data Interpretation, validates, Genomic Editing>
+<Clinical Trial Design, connectedTo, Regulatory Submission>
+<Computational Biology Modeling, connectedTo, end>
+<Diagnostic Test Development, connectedTo, Computational Biology Modeling>
+<Drug Discovery, connectedTo, Synthetic Biology Design>
+<Drug Repurposing, connectedTo, Protein Engineering>
+<Drug Repurposing, partOf, Assay Development>
+<Ethical Review Board Approval, connectedTo, Pharmacogenomics>
+<Ethical Review Board Approval, partOf, Cell Culture>
+<Genomic Editing, connectedTo, Personalized Medicine Formulation>
+<Microbial Fermentation, connectedTo, Genomic Editing>
+<Microbial Fermentation, connectedTo, Monoclonal Antibody Production>
+<Monoclonal Antibody Production, connectedTo, Drug Discovery>
+<Nanobiotechnology Application, connectedTo, Drug Repurposing>
+<Nanobiotechnology Application, partOf, Assay Development>
+<Personalized Medicine Formulation, connectedTo, Biomarker Discovery>
+<Personalized Medicine Formulation, connectedTo, Drug Discovery>
+<Personalized Medicine Formulation, connectedTo, end>
+<Pharmacogenomics, connectedTo, CRISPR Technology Application>
+<Pharmacogenomics, partOf, Cell Culture>
+<Preclinical Testing, connectedTo, CRISPR Technology Application>
+<Protein Engineering, connectedTo, Diagnostic Test Development>
+<Protein Engineering, partOf, Assay Development>
+<Regulatory Submission, connectedTo, Bioprocess Optimization>
+<Regulatory Submission, connectedTo, Biosensor Development>
+<Synthetic Biology Design, connectedTo, Bioreactor Operation>
+<Tissue Engineering, connectedTo, Biomarker Discovery>
+<Tissue Engineering, connectedTo, Bioreactor Operation>
+<Tissue Engineering, connectedTo, Clinical Data Interpretation>
+<Tissue Engineering, connectedTo, Monoclonal Antibody Production>
diff --git a/train/mermaid/hard/mermaid_2.txt b/train/mermaid/hard/mermaid_2.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c14c5154594685a02d0aef33fd82e6c1b93b44e1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_2.txt
@@ -0,0 +1,43 @@
+<Account Closure, collects, Transaction Audit>
+<Account Closure, connectedTo, Asset Management>
+<Account Closure, connectedTo, Forex Trading>
+<Account Closure, disburses, Credit Card Application>
+<Account Verification, connectedTo, Treasury Management>
+<Approval Decision, connectedTo, Financial Advisory>
+<Approval Decision, partOf, Wealth Management>
+<Asset Management, connectedTo, Debt Collection>
+<Asset Management, connectedTo, Transaction Audit>
+<Collateral Evaluation, connectedTo, Approval Decision>
+<Collateral Evaluation, connectedTo, Underwriting>
+<Compliance Review, connectedTo, Customer Onboarding>
+<Credit Card Application, budgets, Forex Trading>
+<Credit Scoring, connectedTo, Account Verification>
+<Credit Scoring, connectedTo, KYC Validation>
+<Debt Collection, connectedTo, Credit Scoring>
+<Debt Collection, connectedTo, Forex Trading>
+<Debt Collection, connectedTo, Treasury Management>
+<Dispute Resolution, connectedTo, Tax Preparation>
+<Dispute Resolution, partOf, Wealth Management>
+<Financial Advisory, connectedTo, Dispute Resolution>
+<Financial Advisory, partOf, Wealth Management>
+<Forex Trading, connectedTo, Risk Assessment>
+<Fraud Check, connectedTo, Account Closure>
+<KYC Validation, connectedTo, Transaction Logging>
+<KYC Validation, partOf, Portfolio Management>
+<Market Analysis, connectedTo, Payment Gateway Integration>
+<Market Analysis, partOf, Portfolio Management>
+<Merger and Acquisition, rejects, Compliance Review>
+<Payment Gateway Integration, connectedTo, Treasury Management>
+<Payment Gateway Integration, partOf, Portfolio Management>
+<Risk Assessment, connectedTo, Merger and Acquisition>
+<Tax Preparation, partOf, Wealth Management>
+<Tax Preparation, scores, Risk Assessment>
+<Transaction Audit, connectedTo, Debt Collection>
+<Transaction Audit, connectedTo, Forex Trading>
+<Transaction Audit, forecasts, Collateral Evaluation>
+<Transaction Logging, connectedTo, Market Analysis>
+<Transaction Logging, partOf, Portfolio Management>
+<Treasury Management, connectedTo, Credit Card Application>
+<Underwriting, connectedTo, Forex Trading>
+<Underwriting, recommends, Debt Collection>
+<start, connectedTo, Fraud Check>
diff --git a/train/mermaid/hard/mermaid_200.mmd b/train/mermaid/hard/mermaid_200.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..17f0ab5355d037f6a0e5ed91bfca96fb9f9833ff
--- /dev/null
+++ b/train/mermaid/hard/mermaid_200.mmd
@@ -0,0 +1,79 @@
+graph BT
+    N0([start])
+    N1[Environmental Bioremediation]
+    N2[/Bioreactor Operation/]
+    N3[Genomic Editing]
+    N4(Data Management and Analysis)
+    N5{Intellectual Property Protection}
+    N6([CRISPR Technology Application])
+    N7{Bioimaging}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    subgraph Regulatory Submission
+        nest0_0[Drug Repurposing]
+        nest0_1{Biosensor Development}
+        nest0_2[Assay Development]
+        nest0_3[/Clinical Trial Design/]
+    end
+    subgraph Pharmacogenomics
+        nest1_0(Structural Biology)
+        nest1_1[/Bioprocess Optimization/]
+        nest1_2[/Clinical Data Interpretation/]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> |yes| N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N3 -.-> nest0_0
+    nest0_3 -.-> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 --> nest1_0
+    nest1_2 -.-> N1
+    N3 --> S0
+    S0 --> N7
+    S0 --> N6
+    N3 -.-> S1
+    S1 -.-> N7
+    S1 -.-> N6
+    N0 --> S2
+    S2 -.-> N4
+    S2 --> N5
+    nest0_3 -.-> N3
+    style S0 fill:#DFE7EB,stroke:#B0C5CD
+    style S1 fill:#FFE88D,stroke:#FFDA4E
+    style S2 fill:#FFE88D,stroke:#FFDA4E
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_201.mmd b/train/mermaid/hard/mermaid_201.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a9bddaa2e778312a2046cf885b277067397a4b0a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_201.mmd
@@ -0,0 +1,130 @@
+graph TD
+    N0([Post_Marketing Surveillance])
+    N1(Biostatistics)
+    N2{Counterfeit Drug Detection}
+    N3[(Drug Repurposing)]
+    N4{Pharmacovigilance}
+    N5[(Patient Adherence Programs)]
+    N6[Process Validation]
+    N7([Intellectual Property Litigation])
+    N8[(Batch Release)]
+    N9[[Clinical Supply Management]]
+    N10[(Solid Dosage Formulation)]
+    N11{Distribution}
+    N12[Packaging]
+    N13[/Supply Chain Management/]
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Regulatory Approval
+        nest0_0[Cleanroom Operations]
+        nest0_1(Quality Control)
+        nest0_2([Formulation Development])
+        nest0_3{Patent Application}
+    end
+    subgraph Clinical Data Management
+        nest1_0([Drug Stability Testing])
+        nest1_1[Drug Research]
+        nest1_2[Medical Writing]
+        nest1_3[Market Access Strategy]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N2 --> nest0_0
+    nest0_3 --> N6
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N11 -.-> nest1_0
+    nest1_3 --> N6
+    N10 --> S0
+    S0 --> N13
+    S0 --> N12
+    N0 -.-> S1
+    S1 -.-> N11
+    S1 -.-> N9
+    N1 --> M1
+    N2 -.-> M1
+    N0 --> M1
+    M1 -.-> N4
+    N2 -.-> M2
+    N1 -.-> M2
+    M2 --> N4
+    style N0 fill:#FFECB3,stroke:#FFC107
+    style N1 fill:#D0E0F8,stroke:#4285F4
+    style N2 fill:#BBDEFB,stroke:#2196F3
+    style N3 fill:#BBDEFB,stroke:#2196F3
+    style N4 fill:#BBDEFB,stroke:#2196F3
+    style N5 fill:#FFECB3,stroke:#FFC107
+    style N6 fill:#BBDEFB,stroke:#2196F3
+    style N7 fill:#BBDEFB,stroke:#2196F3
+    style N8 fill:#D0E0F8,stroke:#4285F4
+    style N9 fill:#BBDEFB,stroke:#2196F3
+    style N10 fill:#D0E0F8,stroke:#4285F4
+    style N11 fill:#BBDEFB,stroke:#2196F3
+    style N12 fill:#D0E0F8,stroke:#4285F4
+    style N13 fill:#BBDEFB,stroke:#2196F3
+    style S0 fill:#FFECB3,stroke:#FFC107
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style M1 fill:#D0E0F8,stroke:#4285F4
+    style M2 fill:#D0E0F8,stroke:#4285F4
+    style nest0_0 fill:#BBDEFB,stroke:#2196F3
+    style nest0_1 fill:#BBDEFB,stroke:#2196F3
+    style nest0_2 fill:#D0E0F8,stroke:#4285F4
+    style nest0_3 fill:#D0E0F8,stroke:#4285F4
+    style nest1_0 fill:#BBDEFB,stroke:#2196F3
+    style nest1_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_2 fill:#D0E0F8,stroke:#4285F4
+    style nest1_3 fill:#FFECB3,stroke:#FFC107
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#2196F3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_201.txt b/train/mermaid/hard/mermaid_201.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f4d5c7b60064ff0eeb142101a4a1c5988fe0c666
--- /dev/null
+++ b/train/mermaid/hard/mermaid_201.txt
@@ -0,0 +1,38 @@
+<Batch Release, connectedTo, Clinical Supply Management>
+<Biostatistics, connectedTo, Counterfeit Drug Detection>
+<Biostatistics, connectedTo, Pharmacovigilance>
+<Cleanroom Operations, connectedTo, Quality Control>
+<Cleanroom Operations, partOf, Regulatory Approval>
+<Clinical Supply Management, connectedTo, Solid Dosage Formulation>
+<Counterfeit Drug Detection, connectedTo, Cleanroom Operations>
+<Counterfeit Drug Detection, connectedTo, Drug Repurposing>
+<Counterfeit Drug Detection, connectedTo, Pharmacovigilance>
+<Distribution, connectedTo, Drug Stability Testing>
+<Distribution, connectedTo, Packaging>
+<Drug Repurposing, connectedTo, Pharmacovigilance>
+<Drug Research, connectedTo, Medical Writing>
+<Drug Research, partOf, Clinical Data Management>
+<Drug Stability Testing, connectedTo, Drug Research>
+<Drug Stability Testing, partOf, Clinical Data Management>
+<Formulation Development, connectedTo, Patent Application>
+<Formulation Development, partOf, Regulatory Approval>
+<Intellectual Property Litigation, connectedTo, Batch Release>
+<Market Access Strategy, connectedTo, Process Validation>
+<Market Access Strategy, partOf, Clinical Data Management>
+<Medical Writing, connectedTo, Market Access Strategy>
+<Medical Writing, partOf, Clinical Data Management>
+<Packaging, connectedTo, Supply Chain Management>
+<Patent Application, connectedTo, Process Validation>
+<Patent Application, partOf, Regulatory Approval>
+<Patient Adherence Programs, connectedTo, Process Validation>
+<Pharmacovigilance, connectedTo, Patient Adherence Programs>
+<Post_Marketing Surveillance, connectedTo, Biostatistics>
+<Post_Marketing Surveillance, connectedTo, Clinical Supply Management>
+<Post_Marketing Surveillance, connectedTo, Distribution>
+<Post_Marketing Surveillance, connectedTo, Pharmacovigilance>
+<Process Validation, connectedTo, Intellectual Property Litigation>
+<Quality Control, connectedTo, Formulation Development>
+<Quality Control, partOf, Regulatory Approval>
+<Solid Dosage Formulation, connectedTo, Distribution>
+<Solid Dosage Formulation, connectedTo, Packaging>
+<Solid Dosage Formulation, connectedTo, Supply Chain Management>
diff --git a/train/mermaid/hard/mermaid_204.mmd b/train/mermaid/hard/mermaid_204.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..7f6095c01cefb1f552fc4d99c7b23bd13c15dba0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_204.mmd
@@ -0,0 +1,84 @@
+graph TD
+    N0([start])
+    N1[(Patient Adherence Programs)]
+    N2[(Preclinical Testing)]
+    N3[[Clinical Supply Management]]
+    N4([Sterile Product Filling])
+    N5(Patent Application)
+    N6[/Adverse Event Reporting/]
+    N7(Drug Research)
+    N8(Supply Chain Management)
+    N9[(Post_Marketing Surveillance)]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Drug Repurposing
+        nest0_0(Cleanroom Operations)
+        nest0_1[Audit Management]
+        nest0_2{Biostatistics}
+    end
+    subgraph Drug Stability Testing
+        nest1_0{Formulation Development}
+        nest1_1{Injectable Drug Manufacturing}
+        nest1_2([Counterfeit Drug Detection])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |yes| N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N2 --> nest0_0
+    nest0_2 --> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N3 --> nest1_0
+    nest1_2 --> N2
+    N2 -.-> S0
+    S0 -.-> N7
+    S0 -.-> N6
+    S0 --> N5
+    N2 -.-> S1
+    S1 --> N6
+    S1 -.-> N5
+    N1 --> M0
+    N7 --> M0
+    N4 --> M0
+    M0 -.-> N9
+    style S0 fill:#FFF0CC,stroke:#FFCC80
+    style S1 fill:#FFCDD2,stroke:#F44336
+    style M0 fill:#FFFDE0,stroke:#FFF8A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFCC80,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_205.mmd b/train/mermaid/hard/mermaid_205.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a54eb9a3a6e73ba2fe7071613b0fd4640feb675f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_205.mmd
@@ -0,0 +1,114 @@
+graph RL
+    N0([start])
+    N1(Drug Research)
+    N2[Compound Synthesis]
+    N3[(Drug Repurposing)]
+    N4[/Drug Device Combination/]
+    N5{Pharmacovigilance}
+    N6[Process Validation]
+    N7[Cold Chain Logistics]
+    N8([Preclinical Testing])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Patent Application
+        nest0_0(Audit Management)
+        nest0_1([Post_Approval Commitment Tracking])
+        nest0_2[[Patient Adherence Programs]]
+    end
+    subgraph Cleanroom Operations
+        nest1_0(Packaging)
+        nest1_1(Active Pharmaceutical Ingredient Production)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N3 -.-> nest0_0
+    nest0_2 -.-> N8
+    nest1_0 -.-> nest1_1
+    N6 -.-> nest1_0
+    nest1_1 -.-> N1
+    N0 -.-> S0
+    S0 --> N6
+    S0 -.-> N3
+    N4 --> S1
+    S1 --> N7
+    S1 --> N6
+    N5 -.-> S2
+    S2 --> N7
+    S2 --> N8
+    N0 --> M0
+    N2 --> M0
+    M0 --> N8
+    N1 --> M1
+    N0 --> M1
+    M1 --> N3
+    N1 -.-> M2
+    N2 --> M2
+    N0 --> M2
+    M2 --> N4
+    style N0 fill:#D6D9F0,stroke:#9FA9E1
+    style N1 fill:#D6D9F0,stroke:#9FA9E1
+    style N2 fill:#FFCDD2,stroke:#F44336
+    style N3 fill:#FFCDD2,stroke:#F44336
+    style N4 fill:#EDE7F6,stroke:#9575CD
+    style N5 fill:#EDE7F6,stroke:#9575CD
+    style N6 fill:#D6D9F0,stroke:#9FA9E1
+    style N7 fill:#D6D9F0,stroke:#9FA9E1
+    style N8 fill:#D6D9F0,stroke:#9FA9E1
+    style S0 fill:#D6D9F0,stroke:#9FA9E1
+    style S1 fill:#FFCDD2,stroke:#F44336
+    style S2 fill:#D6D9F0,stroke:#9FA9E1
+    style M0 fill:#FFCDD2,stroke:#F44336
+    style M1 fill:#D6D9F0,stroke:#9FA9E1
+    style M2 fill:#FFCDD2,stroke:#F44336
+    style nest0_0 fill:#FFCDD2,stroke:#F44336
+    style nest0_1 fill:#EDE7F6,stroke:#9575CD
+    style nest0_2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest1_0 fill:#EDE7F6,stroke:#9575CD
+    style nest1_1 fill:#D6D9F0,stroke:#9FA9E1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9FA9E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_208.mmd b/train/mermaid/hard/mermaid_208.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..94d4d8c91ace1f090e76db16d62e74a961544873
--- /dev/null
+++ b/train/mermaid/hard/mermaid_208.mmd
@@ -0,0 +1,108 @@
+graph TD
+    N0([start])
+    N1([Pharmacovigilance])
+    N2(Manufacturing Scale_up)
+    N3([Compound Synthesis])
+    N4[Global Regulatory Affairs]
+    N5[/Injectable Drug Manufacturing/]
+    N6([Packaging])
+    N7[[Patient Adherence Programs]]
+    N8(Patent Application)
+    N9[(Post_Marketing Surveillance)]
+    N10[Medical Writing]
+    N11[Active Pharmaceutical Ingredient Production]
+    N12[Counterfeit Drug Detection]
+    N13[Sales and Marketing Strategy]
+    N14[(Solid Dosage Formulation)]
+    N15[Batch Release]
+    N16[Formulation Development]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Cleanroom Operations
+        nest0_0[/Good Manufacturing Practices/]
+        nest0_1([Clinical Supply Management])
+    end
+    subgraph Quality Control
+        nest1_0[[Supply Chain Management]]
+        nest1_1[/Audit Management/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    N11 --> nest0_0
+    nest0_1 --> |yes| N9
+    nest1_0 -.-> nest1_1
+    N9 --> nest1_0
+    nest1_1 -.-> N6
+    N5 -.-> S0
+    S0 -.-> N10
+    S0 -.-> N15
+    N0 -.-> S1
+    S1 -.-> N6
+    S1 --> N2
+    S1 --> N9
+    N0 --> M0
+    N4 --> M0
+    M0 -.-> N6
+    N1 --> M1
+    N4 -.-> M1
+    M1 -.-> N17
+    style S0 fill:#F9FBE7,stroke:#DCE775
+    style S1 fill:#B2EBF2,stroke:#00BCD4
+    style M0 fill:#F3E5F5,stroke:#AB47BC
+    style M1 fill:#B2EBF2,stroke:#00BCD4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_210.mmd b/train/mermaid/hard/mermaid_210.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4dbf4e3288e25d1bc7aa4bb88af13901129026b6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_210.mmd
@@ -0,0 +1,128 @@
+graph BT
+    N0([start])
+    N1(System Integration)
+    N2[Exploration Robotics]
+    N3[[Battery Management]]
+    N4[Underwater Robotics]
+    N5[Kinematics and Dynamics]
+    N6[[Ethical Robotics Development]]
+    N7(Artificial Intelligence Integration)
+    N8[Autonomous Navigation]
+    N9([End_Effector Design])
+    N10(Path Planning)
+    N11(Fault Detection and Diagnosis)
+    N12[Calibration]
+    N13{Drone Control}
+    N14(Data Collection)
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Grasping and Manipulation
+        nest0_0[[Industrial Automation]]
+        nest0_1(Wireless Communication)
+        nest0_2{Force Control}
+        nest0_3([Software Development])
+    end
+    subgraph Robot Assembly
+        nest1_0[(Exoskeleton Development)]
+        nest1_1{Robot Fleet Management}
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> |no| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> |no| N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> |yes| N15
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N12 -.-> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 --> nest1_1
+    N14 -.-> |yes| nest1_0
+    nest1_1 --> N14
+    N4 -.-> S0
+    S0 --> N7
+    S0 --> N14
+    S0 -.-> N12
+    S0 -.-> N6
+    N5 -.-> S1
+    S1 -.-> |yes| N12
+    S1 -.-> N15
+    S1 -.-> N13
+    N1 --> M0
+    N2 -.-> M0
+    N0 --> |no| M0
+    M0 --> N4
+    N7 --> M1
+    N2 --> M1
+    N1 --> M1
+    N5 -.-> M1
+    M1 -.-> N12
+    N1 -.-> |yes| M2
+    N6 --> |no| M2
+    N5 --> M2
+    M2 --> N8
+    style S0 fill:#ECCFF5,stroke:#CD8FF2
+    style S1 fill:#F2E6F5,stroke:#CB9BE1
+    style M0 fill:#ECCFF5,stroke:#CD8FF2
+    style M1 fill:#F2E6F5,stroke:#CB9BE1
+    style M2 fill:#F2E6F5,stroke:#CB9BE1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#66BB6A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_210.txt b/train/mermaid/hard/mermaid_210.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0600a8d6ddd8338cc97ece783d0ea799f97baa95
--- /dev/null
+++ b/train/mermaid/hard/mermaid_210.txt
@@ -0,0 +1,46 @@
+<Artificial Intelligence Integration, connectedTo, Autonomous Navigation>
+<Artificial Intelligence Integration, connectedTo, Calibration>
+<Autonomous Navigation, connectedTo, End_Effector Design>
+<Battery Management, connectedTo, Underwater Robotics>
+<Calibration, connectedTo, Drone Control>
+<Calibration, connectedTo, Industrial Automation>
+<Data Collection, yes, Exoskeleton Development>
+<Data Collection, yes, end>
+<Drone Control, connectedTo, Data Collection>
+<End_Effector Design, connectedTo, Path Planning>
+<Ethical Robotics Development, no, Artificial Intelligence Integration>
+<Ethical Robotics Development, no, Autonomous Navigation>
+<Exoskeleton Development, connectedTo, Robot Fleet Management>
+<Exoskeleton Development, partOf, Robot Assembly>
+<Exploration Robotics, connectedTo, Battery Management>
+<Exploration Robotics, connectedTo, Calibration>
+<Exploration Robotics, connectedTo, Underwater Robotics>
+<Fault Detection and Diagnosis, connectedTo, Calibration>
+<Force Control, connectedTo, Software Development>
+<Force Control, partOf, Grasping and Manipulation>
+<Industrial Automation, connectedTo, Wireless Communication>
+<Industrial Automation, partOf, Grasping and Manipulation>
+<Kinematics and Dynamics, connectedTo, Autonomous Navigation>
+<Kinematics and Dynamics, connectedTo, Calibration>
+<Kinematics and Dynamics, connectedTo, Drone Control>
+<Kinematics and Dynamics, connectedTo, Ethical Robotics Development>
+<Kinematics and Dynamics, connectedTo, end>
+<Kinematics and Dynamics, yes, Calibration>
+<Path Planning, no, Fault Detection and Diagnosis>
+<Robot Fleet Management, connectedTo, Data Collection>
+<Robot Fleet Management, partOf, Robot Assembly>
+<Software Development, connectedTo, Path Planning>
+<Software Development, partOf, Grasping and Manipulation>
+<System Integration, connectedTo, Calibration>
+<System Integration, connectedTo, Exploration Robotics>
+<System Integration, connectedTo, Underwater Robotics>
+<System Integration, yes, Autonomous Navigation>
+<Underwater Robotics, connectedTo, Artificial Intelligence Integration>
+<Underwater Robotics, connectedTo, Calibration>
+<Underwater Robotics, connectedTo, Data Collection>
+<Underwater Robotics, connectedTo, Ethical Robotics Development>
+<Underwater Robotics, connectedTo, Kinematics and Dynamics>
+<Wireless Communication, connectedTo, Force Control>
+<Wireless Communication, partOf, Grasping and Manipulation>
+<start, connectedTo, System Integration>
+<start, no, Underwater Robotics>
diff --git a/train/mermaid/hard/mermaid_213.mmd b/train/mermaid/hard/mermaid_213.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..7a762f48506b55a763cb0ec06185267e95de6063
--- /dev/null
+++ b/train/mermaid/hard/mermaid_213.mmd
@@ -0,0 +1,98 @@
+graph RL
+    N0([start])
+    N1[Robot Programming]
+    N2[(Robot Design)]
+    N3[Wireless Communication]
+    N4[[Software Development]]
+    N5([Robot Fleet Management])
+    N6[[End_Effector Design]]
+    N7[(Performance Testing)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Service Robotics
+        nest0_0[[Swarm Robotics]]
+        nest0_1[Robotics Simulation]
+    end
+    subgraph Maintenance
+        nest1_0{Grasping and Manipulation}
+        nest1_1([Data Collection])
+        nest1_2(Drone Control)
+        nest1_3(Actuator Control)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    nest0_0 --> nest0_1
+    N2 -.-> nest0_0
+    nest0_1 --> N6
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> |moves| nest1_3
+    N5 -.-> nest1_0
+    nest1_3 -.-> N4
+    N4 --> S0
+    S0 --> N6
+    S0 --> N7
+    N2 --> S1
+    S1 --> N4
+    S1 -.-> N7
+    N0 -.-> S2
+    S2 --> N4
+    S2 -.-> N6
+    S2 --> N2
+    N0 -.-> M2
+    N1 -.-> M2
+    M2 -.-> N4
+    style N0 fill:#F0F4C3,stroke:#AED581
+    style N1 fill:#FFECB3,stroke:#FFC107
+    style N2 fill:#FFECB3,stroke:#FFC107
+    style N3 fill:#C5CAE9,stroke:#3F51B5
+    style N4 fill:#F0F4C3,stroke:#AED581
+    style N5 fill:#C5CAE9,stroke:#3F51B5
+    style N6 fill:#C5CAE9,stroke:#3F51B5
+    style N7 fill:#FFECB3,stroke:#FFC107
+    style S0 fill:#C5CAE9,stroke:#3F51B5
+    style S1 fill:#FFECB3,stroke:#FFC107
+    style S2 fill:#F0F4C3,stroke:#AED581
+    style M2 fill:#FFECB3,stroke:#FFC107
+    style nest0_0 fill:#C5CAE9,stroke:#3F51B5
+    style nest0_1 fill:#C5CAE9,stroke:#3F51B5
+    style nest1_0 fill:#F0F4C3,stroke:#AED581
+    style nest1_1 fill:#C5CAE9,stroke:#3F51B5
+    style nest1_2 fill:#F0F4C3,stroke:#AED581
+    style nest1_3 fill:#FFECB3,stroke:#FFC107
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#3F51B5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_214.mmd b/train/mermaid/hard/mermaid_214.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..7840a7434f40dd55daf9b699bf1771bc25723fc5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_214.mmd
@@ -0,0 +1,128 @@
+graph TD
+    N0([start])
+    N1([Underwater Robotics])
+    N2([Calibration])
+    N3(Autonomous Navigation)
+    N4(Actuator Control)
+    N5[Field Deployment]
+    N6(Path Planning)
+    N7(Swarm Robotics)
+    N8([Human_Robot Interaction])
+    N9(Industrial Automation)
+    N10{Medical Robotics}
+    N11[(Robot Fleet Management)]
+    N12(End_Effector Design)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Service Robotics
+        nest0_0[Safety System Implementation]
+        nest0_1[[Data Collection]]
+    end
+    subgraph Collaborative Robotics
+        nest1_0[(Robot Assembly)]
+        nest1_1(System Integration)
+        nest1_2(Drone Control)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    N6 --> nest0_0
+    nest0_1 -.-> N1
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N3 -.-> nest1_0
+    nest1_2 --> N10
+    N1 --> S0
+    S0 -.-> N7
+    S0 -.-> N12
+    S0 -.-> N6
+    N8 -.-> S1
+    S1 --> N11
+    S1 -.-> N10
+    S1 -.-> N12
+    N7 -.-> S2
+    S2 --> N10
+    S2 --> N12
+    N1 --> M0
+    N0 --> M0
+    M0 -.-> N5
+    N7 -.-> M1
+    N4 --> M1
+    N2 -.-> M1
+    N3 --> M1
+    M1 --> N9
+    style N0 fill:#ECEFF1,stroke:#90A4AE
+    style N1 fill:#ECEFF1,stroke:#90A4AE
+    style N2 fill:#DACBE3,stroke:#A188D0
+    style N3 fill:#DACBE3,stroke:#A188D0
+    style N4 fill:#ECEFF1,stroke:#90A4AE
+    style N5 fill:#DACBE3,stroke:#A188D0
+    style N6 fill:#F1F8E9,stroke:#81C784
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style N8 fill:#DACBE3,stroke:#A188D0
+    style N9 fill:#DACBE3,stroke:#A188D0
+    style N10 fill:#DACBE3,stroke:#A188D0
+    style N11 fill:#DACBE3,stroke:#A188D0
+    style N12 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#ECEFF1,stroke:#90A4AE
+    style S2 fill:#DACBE3,stroke:#A188D0
+    style M0 fill:#DACBE3,stroke:#A188D0
+    style M1 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_0 fill:#F1F8E9,stroke:#81C784
+    style nest0_1 fill:#F1F8E9,stroke:#81C784
+    style nest1_0 fill:#F1F8E9,stroke:#81C784
+    style nest1_1 fill:#F1F8E9,stroke:#81C784
+    style nest1_2 fill:#F1F8E9,stroke:#81C784
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#90A4AE,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_217.mmd b/train/mermaid/hard/mermaid_217.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..168bfd6569b34d89152b514d2b5ba8f72abde2b5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_217.mmd
@@ -0,0 +1,126 @@
+graph RL
+    N0([start])
+    N1([Waste Management])
+    N2[Safety Inspection]
+    N3{Drone Surveying}
+    N4[Risk Assessment]
+    N5(Robotics in Construction)
+    N6[/Subcontractor Management/]
+    N7[Blueprint Review]
+    N8[(Steel Erection)]
+    N9[Sustainable Building Design]
+    N10([Quality Assurance])
+    N11[/Utility Connection/]
+    N12(Punch List Completion)
+    N13([Road Construction])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Electrical Wiring
+        nest0_0[/Site Decontamination/]
+        nest0_1[Concrete Pouring]
+        nest0_2(Occupancy Permit Acquisition)
+    end
+    subgraph Excavation
+        nest1_0{Budget Tracking}
+        nest1_1{Roofing Installation}
+        nest1_2[Material Procurement]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N10 --> nest0_0
+    nest0_2 -.-> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N11 --> |manages| nest1_0
+    nest1_2 --> N13
+    N1 -.-> S0
+    S0 -.-> |schedules| N3
+    S0 -.-> N11
+    N6 -.-> S1
+    S1 --> N10
+    S1 -.-> |builds| N11
+    S1 --> N9
+    N2 --> M0
+    N0 -.-> M0
+    N6 --> |consults| M0
+    M0 --> N8
+    N2 -.-> M1
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N4
+    style N0 fill:#FCFCE7,stroke:#DCE775
+    style N1 fill:#FCFCE7,stroke:#DCE775
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#E0F7FA,stroke:#00BCD4
+    style N4 fill:#ECCFF5,stroke:#CD8FF2
+    style N5 fill:#E0F7FA,stroke:#00BCD4
+    style N6 fill:#ECCFF5,stroke:#CD8FF2
+    style N7 fill:#FCFCE7,stroke:#DCE775
+    style N8 fill:#ECCFF5,stroke:#CD8FF2
+    style N9 fill:#ECCFF5,stroke:#CD8FF2
+    style N10 fill:#E0F7FA,stroke:#00BCD4
+    style N11 fill:#FCFCE7,stroke:#DCE775
+    style N12 fill:#FCFCE7,stroke:#DCE775
+    style N13 fill:#FCFCE7,stroke:#DCE775
+    style S0 fill:#FCFCE7,stroke:#DCE775
+    style S1 fill:#ECCFF5,stroke:#CD8FF2
+    style M0 fill:#FCFCE7,stroke:#DCE775
+    style M1 fill:#ECCFF5,stroke:#CD8FF2
+    style nest0_0 fill:#FCFCE7,stroke:#DCE775
+    style nest0_1 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_2 fill:#ECCFF5,stroke:#CD8FF2
+    style nest1_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_1 fill:#FCFCE7,stroke:#DCE775
+    style nest1_2 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#DCE775,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_218.txt b/train/mermaid/hard/mermaid_218.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d6bd766918901bdab845b5cd109ca353c053fab7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_218.txt
@@ -0,0 +1,33 @@
+<Bridge Building, connectedTo, Post_Construction Handover>
+<Bridge Building, partOf, BIM Modeling>
+<Budget Tracking, connectedTo, Permit Application>
+<Change Order Management, connectedTo, Tunneling>
+<Change Order Management, partOf, BIM Modeling>
+<Concrete Pouring, partOf, Structural Framing>
+<Concrete Pouring, tests, Risk Assessment>
+<Electrical Wiring, connectedTo, Utility Connection>
+<Equipment Mobilization, manages, Concrete Pouring>
+<Equipment Mobilization, partOf, Structural Framing>
+<Foundation Laying, connectedTo, Electrical Wiring>
+<Foundation Laying, connectedTo, Equipment Mobilization>
+<Foundation Laying, connectedTo, Project Scheduling>
+<Foundation Laying, connectedTo, Roofing Installation>
+<Interior Finishing, connectedTo, Electrical Wiring>
+<Interior Finishing, connectedTo, Plumbing Work>
+<Interior Finishing, connectedTo, Project Scheduling>
+<Plumbing Work, connectedTo, Foundation Laying>
+<Plumbing Work, connectedTo, Project Scheduling>
+<Post_Construction Handover, connectedTo, Project Scheduling>
+<Post_Construction Handover, partOf, BIM Modeling>
+<Project Scheduling, connectedTo, Budget Tracking>
+<Project Scheduling, connectedTo, Change Order Management>
+<Project Scheduling, connectedTo, Permit Application>
+<Project Scheduling, connectedTo, Quality Assurance>
+<Quality Assurance, connectedTo, Budget Tracking>
+<Risk Assessment, connectedTo, Utility Connection>
+<Risk Assessment, partOf, Structural Framing>
+<Roofing Installation, bids, Electrical Wiring>
+<Roofing Installation, connectedTo, Project Scheduling>
+<Tunneling, connectedTo, Bridge Building>
+<Tunneling, partOf, BIM Modeling>
+<Utility Connection, connectedTo, Project Scheduling>
diff --git a/train/mermaid/hard/mermaid_221.mmd b/train/mermaid/hard/mermaid_221.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..541e696dbb9af2d59dde2c098daf2f0c3ad03176
--- /dev/null
+++ b/train/mermaid/hard/mermaid_221.mmd
@@ -0,0 +1,136 @@
+graph LR
+    N0([Interior Finishing])
+    N1[Bridge Building]
+    N2[[Permit Application]]
+    N3[Material Procurement]
+    N4(Waste Management)
+    N5(Site Logistics)
+    N6[(Utility Connection)]
+    N7[(Punch List Completion)]
+    N8(Roofing Installation)
+    N9([Electrical Wiring])
+    N10([Subcontractor Management])
+    N11[(Quality Assurance)]
+    N12(Demolition)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph HVAC Installation
+        nest0_0([Road Construction])
+        nest0_1(Blueprint Review)
+        nest0_2[[Change Order Management]]
+    end
+    subgraph Robotics in Construction
+        nest1_0[/Foundation Laying/]
+        nest1_1(Tunneling)
+        nest1_2[(Project Scheduling)]
+        nest1_3[[Structural Framing]]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> |repairs| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N7 --> nest0_0
+    nest0_2 --> N7
+    nest1_0 -.-> |coordinates| nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N8 --> nest1_0
+    nest1_3 -.-> |contracts| N4
+    N6 -.-> S0
+    S0 --> N8
+    S0 -.-> N9
+    S0 -.-> N11
+    S0 -.-> N10
+    N0 -.-> S1
+    S1 -.-> N8
+    S1 --> N9
+    S1 -.-> N3
+    S1 --> N7
+    N9 -.-> S2
+    S2 -.-> |bids| N12
+    S2 -.-> N11
+    N5 --> M0
+    N7 -.-> M0
+    M0 --> N12
+    N0 -.-> M1
+    N5 --> |reports| M1
+    M1 -.-> N11
+    style N0 fill:#FFFCE6,stroke:#FFF9AE
+    style N1 fill:#EDF5F3,stroke:#A1D7CD
+    style N2 fill:#EDF5F3,stroke:#A1D7CD
+    style N3 fill:#EDF5F3,stroke:#A1D7CD
+    style N4 fill:#F8FDD3,stroke:#D3EB9F
+    style N5 fill:#FFFCE6,stroke:#FFF9AE
+    style N6 fill:#FFFCE6,stroke:#FFF9AE
+    style N7 fill:#F8FDD3,stroke:#D3EB9F
+    style N8 fill:#EDF5F3,stroke:#A1D7CD
+    style N9 fill:#FFFCE6,stroke:#FFF9AE
+    style N10 fill:#FFFCE6,stroke:#FFF9AE
+    style N11 fill:#EDF5F3,stroke:#A1D7CD
+    style N12 fill:#F8FDD3,stroke:#D3EB9F
+    style S0 fill:#F8FDD3,stroke:#D3EB9F
+    style S1 fill:#F8FDD3,stroke:#D3EB9F
+    style S2 fill:#F8FDD3,stroke:#D3EB9F
+    style M0 fill:#FFFCE6,stroke:#FFF9AE
+    style M1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest0_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest0_1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest0_2 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest1_2 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_3 fill:#F8FDD3,stroke:#D3EB9F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A1D7CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_221.txt b/train/mermaid/hard/mermaid_221.txt
new file mode 100644
index 0000000000000000000000000000000000000000..30259eb6f4b3053a74a80e4eecb41227dfee01ea
--- /dev/null
+++ b/train/mermaid/hard/mermaid_221.txt
@@ -0,0 +1,42 @@
+<Blueprint Review, connectedTo, Change Order Management>
+<Blueprint Review, partOf, HVAC Installation>
+<Bridge Building, connectedTo, Permit Application>
+<Change Order Management, connectedTo, Punch List Completion>
+<Change Order Management, partOf, HVAC Installation>
+<Electrical Wiring, bids, Demolition>
+<Electrical Wiring, connectedTo, Quality Assurance>
+<Electrical Wiring, connectedTo, Subcontractor Management>
+<Foundation Laying, coordinates, Tunneling>
+<Foundation Laying, partOf, Robotics in Construction>
+<Interior Finishing, connectedTo, Bridge Building>
+<Interior Finishing, connectedTo, Electrical Wiring>
+<Interior Finishing, connectedTo, Material Procurement>
+<Interior Finishing, connectedTo, Punch List Completion>
+<Interior Finishing, connectedTo, Quality Assurance>
+<Interior Finishing, connectedTo, Roofing Installation>
+<Material Procurement, connectedTo, Waste Management>
+<Permit Application, repairs, Material Procurement>
+<Project Scheduling, connectedTo, Structural Framing>
+<Project Scheduling, partOf, Robotics in Construction>
+<Punch List Completion, connectedTo, Demolition>
+<Punch List Completion, connectedTo, Road Construction>
+<Punch List Completion, connectedTo, Roofing Installation>
+<Quality Assurance, connectedTo, Demolition>
+<Road Construction, connectedTo, Blueprint Review>
+<Road Construction, partOf, HVAC Installation>
+<Roofing Installation, connectedTo, Electrical Wiring>
+<Roofing Installation, connectedTo, Foundation Laying>
+<Site Logistics, connectedTo, Demolition>
+<Site Logistics, connectedTo, Utility Connection>
+<Site Logistics, reports, Quality Assurance>
+<Structural Framing, contracts, Waste Management>
+<Structural Framing, partOf, Robotics in Construction>
+<Subcontractor Management, connectedTo, Quality Assurance>
+<Tunneling, connectedTo, Project Scheduling>
+<Tunneling, partOf, Robotics in Construction>
+<Utility Connection, connectedTo, Electrical Wiring>
+<Utility Connection, connectedTo, Punch List Completion>
+<Utility Connection, connectedTo, Quality Assurance>
+<Utility Connection, connectedTo, Roofing Installation>
+<Utility Connection, connectedTo, Subcontractor Management>
+<Waste Management, connectedTo, Site Logistics>
diff --git a/train/mermaid/hard/mermaid_222.txt b/train/mermaid/hard/mermaid_222.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f9e676e4b56904f91e98a3aeaeb459abff99cfba
--- /dev/null
+++ b/train/mermaid/hard/mermaid_222.txt
@@ -0,0 +1,41 @@
+<BIM Modeling, connectedTo, Site Decontamination>
+<BIM Modeling, partOf, Occupancy Permit Acquisition>
+<Blueprint Review, connectedTo, Project Scheduling>
+<Budget Tracking, connectedTo, Quality Assurance>
+<Change Order Management, connectedTo, Electrical Wiring>
+<Change Order Management, partOf, Occupancy Permit Acquisition>
+<Drone Surveying, demolishes, Facade Installation>
+<Drone Surveying, partOf, Interior Finishing>
+<Electrical Wiring, connectedTo, Steel Erection>
+<Electrical Wiring, partOf, Occupancy Permit Acquisition>
+<Facade Installation, connectedTo, Plumbing Work>
+<Facade Installation, partOf, Interior Finishing>
+<Material Procurement, connectedTo, Budget Tracking>
+<Permit Application, connectedTo, Site Logistics>
+<Plumbing Work, connectedTo, Permit Application>
+<Plumbing Work, partOf, Interior Finishing>
+<Project Scheduling, connectedTo, Structural Framing>
+<Project Scheduling, connectedTo, Subcontractor Management>
+<Quality Assurance, connectedTo, Utility Connection>
+<Risk Assessment, connectedTo, BIM Modeling>
+<Risk Assessment, connectedTo, Permit Application>
+<Road Construction, connectedTo, Subcontractor Management>
+<Robotics in Construction, connectedTo, Safety Inspection>
+<Safety Inspection, connectedTo, Waste Management>
+<Safety Inspection, connectedTo, end>
+<Site Decontamination, connectedTo, Change Order Management>
+<Site Decontamination, partOf, Occupancy Permit Acquisition>
+<Site Logistics, connectedTo, Drone Surveying>
+<Site Logistics, connectedTo, Project Scheduling>
+<Site Logistics, connectedTo, Quality Assurance>
+<Site Logistics, connectedTo, Steel Erection>
+<Steel Erection, connectedTo, end>
+<Steel Erection, contracts, Blueprint Review>
+<Structural Framing, connectedTo, Road Construction>
+<Structural Framing, connectedTo, Subcontractor Management>
+<Subcontractor Management, connectedTo, Material Procurement>
+<Subcontractor Management, connectedTo, Quality Assurance>
+<Subcontractor Management, measures, Budget Tracking>
+<Utility Connection, materials, end>
+<Waste Management, connectedTo, end>
+<Waste Management, estimates, Risk Assessment>
diff --git a/train/mermaid/hard/mermaid_223.mmd b/train/mermaid/hard/mermaid_223.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..57e4459e9038214e453cd6d4dff69db052d0a497
--- /dev/null
+++ b/train/mermaid/hard/mermaid_223.mmd
@@ -0,0 +1,118 @@
+graph LR
+    N0([Structural Framing])
+    N1(Road Construction)
+    N2(Facade Installation)
+    N3[(HVAC Installation)]
+    N4[Occupancy Permit Acquisition]
+    N5[(Project Scheduling)]
+    N6(Electrical Wiring)
+    N7([Landscape Design])
+    N8[(Roofing Installation)]
+    N9[Robotics in Construction]
+    N10[Waste Management]
+    N11(Pre_fabrication)
+    N12([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Material Procurement
+        nest0_0[Tunneling]
+        nest0_1[/Budget Tracking/]
+        nest0_2[[Safety Inspection]]
+        nest0_3(Punch List Completion)
+    end
+    subgraph Permit Application
+        nest1_0[/Site Planning/]
+        nest1_1(Quality Assurance)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> |contracts| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 -.-> nest0_0
+    nest0_3 --> N5
+    nest1_0 -.-> nest1_1
+    N3 --> nest1_0
+    nest1_1 --> N10
+    N3 --> S0
+    S0 -.-> N6
+    S0 -.-> N5
+    S0 -.-> N12
+    S0 --> N8
+    N7 --> S1
+    S1 -.-> N10
+    S1 --> N12
+    S1 -.-> N9
+    S1 -.-> N11
+    N4 -.-> M1
+    N8 -.-> M1
+    N6 -.-> M1
+    M1 --> N11
+    style N0 fill:#FFECB3,stroke:#FFC107
+    style N1 fill:#F1F8E9,stroke:#81C784
+    style N2 fill:#FFECB3,stroke:#FFC107
+    style N3 fill:#F1F8E9,stroke:#81C784
+    style N4 fill:#FFECB3,stroke:#FFC107
+    style N5 fill:#F1F8E9,stroke:#81C784
+    style N6 fill:#FFECB3,stroke:#FFC107
+    style N7 fill:#F9FBE7,stroke:#C0CA33
+    style N8 fill:#F1F8E9,stroke:#81C784
+    style N9 fill:#FFECB3,stroke:#FFC107
+    style N10 fill:#F9FBE7,stroke:#C0CA33
+    style N11 fill:#FFECB3,stroke:#FFC107
+    style N12 fill:#F9FBE7,stroke:#C0CA33
+    style S0 fill:#F9FBE7,stroke:#C0CA33
+    style S1 fill:#FFECB3,stroke:#FFC107
+    style M1 fill:#FFECB3,stroke:#FFC107
+    style nest0_0 fill:#FFECB3,stroke:#FFC107
+    style nest0_1 fill:#F1F8E9,stroke:#81C784
+    style nest0_2 fill:#FFECB3,stroke:#FFC107
+    style nest0_3 fill:#FFECB3,stroke:#FFC107
+    style nest1_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest1_1 fill:#F1F8E9,stroke:#81C784
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC107,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_224.txt b/train/mermaid/hard/mermaid_224.txt
new file mode 100644
index 0000000000000000000000000000000000000000..acc79896da6fbb1b0b5cee9bba3f4614c9ff7070
--- /dev/null
+++ b/train/mermaid/hard/mermaid_224.txt
@@ -0,0 +1,28 @@
+<BIM Modeling, connectedTo, Excavation>
+<Blueprint Review, partOf, Change Order Management>
+<Blueprint Review, yes, Project Scheduling>
+<Budget Tracking, connectedTo, Site Decontamination>
+<Budget Tracking, connectedTo, Structural Framing>
+<Excavation, connectedTo, Permit Application>
+<Excavation, connectedTo, Robotics in Construction>
+<Excavation, yes, Steel Erection>
+<Facade Installation, connectedTo, Steel Erection>
+<Facade Installation, partOf, Road Construction>
+<Project Scheduling, connectedTo, Steel Erection>
+<Project Scheduling, partOf, Change Order Management>
+<Robotics in Construction, connectedTo, Blueprint Review>
+<Robotics in Construction, connectedTo, Tunneling>
+<Roofing Installation, connectedTo, BIM Modeling>
+<Roofing Installation, connectedTo, Steel Erection>
+<Roofing Installation, connectedTo, Structural Framing>
+<Site Decontamination, connectedTo, Facade Installation>
+<Site Decontamination, partOf, Road Construction>
+<Steel Erection, connectedTo, Robotics in Construction>
+<Steel Erection, connectedTo, Structural Framing>
+<Structural Framing, connectedTo, Permit Application>
+<Tunneling, connectedTo, Budget Tracking>
+<Utility Connection, connectedTo, BIM Modeling>
+<Utility Connection, connectedTo, Robotics in Construction>
+<Utility Connection, connectedTo, Roofing Installation>
+<start, connectedTo, Structural Framing>
+<start, connectedTo, Utility Connection>
diff --git a/train/mermaid/hard/mermaid_225.mmd b/train/mermaid/hard/mermaid_225.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2bcedc83dd5f9bba072e6af87826fa82cd276ec3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_225.mmd
@@ -0,0 +1,134 @@
+graph RL
+    N0([start])
+    N1(Talent Management)
+    N2([User Generated Content Curation])
+    N3[Podcast Production]
+    N4(Virtual Reality Content Creation)
+    N5[[Interactive Storytelling]]
+    N6(Broadcasting)
+    N7[Scriptwriting]
+    N8(Photojournalism)
+    N9[Brand Partnerships]
+    N10[(Data Monetization)]
+    N11[Game Streaming]
+    N12[/Music Recording/]
+    N13(Visual Effects)
+    N14[Radio Programming]
+    N15[/Content Moderation/]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Augmented Reality Experiences
+        nest0_0[(Journalism)]
+        nest0_1[Platform Development]
+        nest0_2[Print Layout]
+    end
+    subgraph Subscription Management
+        nest1_0[Content Creation]
+        nest1_1[[Analytics Reporting]]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |no| N9
+    N9 --> |no| N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N15 --> nest0_0
+    nest0_2 -.-> N11
+    nest1_0 --> nest1_1
+    N12 --> nest1_0
+    nest1_1 -.-> N14
+    N2 --> S0
+    S0 -.-> N4
+    S0 -.-> N13
+    S0 --> |yes| N16
+    N10 --> S1
+    S1 -.-> N12
+    S1 --> |no| N13
+    S1 -.-> |no| N16
+    S1 -.-> N15
+    N8 -.-> S2
+    S2 --> N10
+    S2 -.-> |yes| N12
+    S2 -.-> N15
+    S2 --> N13
+    N1 --> M0
+    N0 -.-> M0
+    M0 --> N3
+    N3 --> M1
+    N6 --> M1
+    N7 --> M1
+    M1 -.-> N12
+    N1 -.-> M2
+    N0 -.-> M2
+    M2 -.-> N3
+    style S0 fill:#F3E5F5,stroke:#AB47BC
+    style S1 fill:#C9F0F0,stroke:#4DD0E1
+    style S2 fill:#C9F0F0,stroke:#4DD0E1
+    style M0 fill:#C9F0F0,stroke:#4DD0E1
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    style M2 fill:#F3E5F5,stroke:#AB47BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#AB47BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_226.mmd b/train/mermaid/hard/mermaid_226.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..cc69fd070c7917008ea82331714b6611f9370b72
--- /dev/null
+++ b/train/mermaid/hard/mermaid_226.mmd
@@ -0,0 +1,103 @@
+graph TD
+    N0([start])
+    N1[(Music Recording)]
+    N2[/Cross_Platform Syndication/]
+    N3{Augmented Reality Experiences}
+    N4[[Interactive Storytelling]]
+    N5[Editing]
+    N6(Data Monetization)
+    N7[Audience Engagement]
+    N8(Photojournalism)
+    N9[Digital Marketing]
+    N10[[Brand Partnerships]]
+    S0(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph User Generated Content Curation
+        nest0_0(Film Production)
+        nest0_1[(Platform Development)]
+        nest0_2{Journalism}
+        nest0_3[(Content Licensing)]
+    end
+    subgraph Crisis Communication
+        nest1_0{Analytics Reporting}
+        nest1_1[(Content Moderation)]
+        nest1_2([Advertising Sales])
+        nest1_3([Scriptwriting])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N7 --> nest0_0
+    nest0_3 --> N6
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 --> nest1_0
+    nest1_3 -.-> N4
+    N5 -.-> S0
+    S0 -.-> N9
+    S0 -.-> N7
+    S0 -.-> N10
+    S0 --> N8
+    N0 -.-> M0
+    N3 -.-> M0
+    M0 --> N5
+    N1 -.-> M1
+    N3 --> M1
+    M1 --> N8
+    N2 -.-> M2
+    N6 --> M2
+    N4 -.-> M2
+    M2 --> N8
+    style S0 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#E0F2F1,stroke:#4DB6AC
+    style M1 fill:#E0F2F1,stroke:#4DB6AC
+    style M2 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_226.txt b/train/mermaid/hard/mermaid_226.txt
new file mode 100644
index 0000000000000000000000000000000000000000..47d441dfe270fd7f4f4e810b68db6891fc2f5f60
--- /dev/null
+++ b/train/mermaid/hard/mermaid_226.txt
@@ -0,0 +1,39 @@
+<Advertising Sales, connectedTo, Scriptwriting>
+<Advertising Sales, partOf, Crisis Communication>
+<Analytics Reporting, connectedTo, Content Moderation>
+<Analytics Reporting, partOf, Crisis Communication>
+<Audience Engagement, connectedTo, Film Production>
+<Audience Engagement, connectedTo, Photojournalism>
+<Augmented Reality Experiences, connectedTo, Editing>
+<Augmented Reality Experiences, connectedTo, Interactive Storytelling>
+<Augmented Reality Experiences, connectedTo, Photojournalism>
+<Content Licensing, connectedTo, Data Monetization>
+<Content Licensing, partOf, User Generated Content Curation>
+<Content Moderation, connectedTo, Advertising Sales>
+<Content Moderation, partOf, Crisis Communication>
+<Cross_Platform Syndication, connectedTo, Augmented Reality Experiences>
+<Cross_Platform Syndication, connectedTo, Photojournalism>
+<Data Monetization, connectedTo, Audience Engagement>
+<Data Monetization, connectedTo, Photojournalism>
+<Digital Marketing, connectedTo, Analytics Reporting>
+<Digital Marketing, connectedTo, Brand Partnerships>
+<Editing, connectedTo, Audience Engagement>
+<Editing, connectedTo, Brand Partnerships>
+<Editing, connectedTo, Data Monetization>
+<Editing, connectedTo, Digital Marketing>
+<Editing, connectedTo, Photojournalism>
+<Film Production, connectedTo, Platform Development>
+<Film Production, partOf, User Generated Content Curation>
+<Interactive Storytelling, connectedTo, Editing>
+<Interactive Storytelling, connectedTo, Photojournalism>
+<Journalism, connectedTo, Content Licensing>
+<Journalism, partOf, User Generated Content Curation>
+<Music Recording, connectedTo, Cross_Platform Syndication>
+<Music Recording, connectedTo, Photojournalism>
+<Photojournalism, connectedTo, Digital Marketing>
+<Platform Development, connectedTo, Journalism>
+<Platform Development, partOf, User Generated Content Curation>
+<Scriptwriting, connectedTo, Interactive Storytelling>
+<Scriptwriting, partOf, Crisis Communication>
+<start, connectedTo, Editing>
+<start, connectedTo, Music Recording>
diff --git a/train/mermaid/hard/mermaid_227.mmd b/train/mermaid/hard/mermaid_227.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a4720e46efd05c7aeb70744e3e2d745c8f135c0c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_227.mmd
@@ -0,0 +1,150 @@
+graph TD
+    N0([start])
+    N1[[Platform Development]]
+    N2[/Scriptwriting/]
+    N3(Sound Design)
+    N4(Live Streaming)
+    N5[(Game Streaming)]
+    N6[/Print Layout/]
+    N7[(Radio Programming)]
+    N8[[Publishing]]
+    N9(Audience Segmentation)
+    N10{Augmented Reality Experiences}
+    N11[Event Organization]
+    N12(Social Media Management)
+    N13[Audience Engagement]
+    N14[/Interactive Storytelling/]
+    N15(User Generated Content Curation)
+    N16(Brand Partnerships)
+    N17([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Distribution
+        nest0_0{Analytics Reporting}
+        nest0_1{Music Recording}
+    end
+    subgraph Talent Management
+        nest1_0[(Cross_Platform Syndication)]
+        nest1_1[Content Moderation]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    N6 --> nest0_0
+    nest0_1 --> N15
+    nest1_0 -.-> nest1_1
+    N5 -.-> nest1_0
+    nest1_1 --> N16
+    N5 --> S0
+    S0 -.-> N14
+    S0 -.-> N7
+    S0 -.-> N12
+    N1 --> S1
+    S1 --> N3
+    S1 -.-> |curates| N15
+    S1 --> N10
+    N7 -.-> S2
+    S2 -.-> N10
+    S2 --> N12
+    N7 -.-> M0
+    N4 --> M0
+    M0 --> N9
+    N13 --> M1
+    N2 -.-> M1
+    N9 --> M1
+    M1 -.-> N17
+    N1 -.-> M2
+    N3 -.-> M2
+    M2 --> N5
+    style N0 fill:#E3F2FD,stroke:#64B5F6
+    style N1 fill:#F9FBE7,stroke:#C0CA33
+    style N2 fill:#F9FBE7,stroke:#C0CA33
+    style N3 fill:#E3F2FD,stroke:#64B5F6
+    style N4 fill:#FFF8E1,stroke:#FFD54F
+    style N5 fill:#F9FBE7,stroke:#C0CA33
+    style N6 fill:#E3F2FD,stroke:#64B5F6
+    style N7 fill:#E3F2FD,stroke:#64B5F6
+    style N8 fill:#E3F2FD,stroke:#64B5F6
+    style N9 fill:#E3F2FD,stroke:#64B5F6
+    style N10 fill:#F9FBE7,stroke:#C0CA33
+    style N11 fill:#E3F2FD,stroke:#64B5F6
+    style N12 fill:#FFF8E1,stroke:#FFD54F
+    style N13 fill:#E3F2FD,stroke:#64B5F6
+    style N14 fill:#FFF8E1,stroke:#FFD54F
+    style N15 fill:#FFF8E1,stroke:#FFD54F
+    style N16 fill:#E3F2FD,stroke:#64B5F6
+    style N17 fill:#E3F2FD,stroke:#64B5F6
+    style S0 fill:#FFF8E1,stroke:#FFD54F
+    style S1 fill:#F9FBE7,stroke:#C0CA33
+    style S2 fill:#F9FBE7,stroke:#C0CA33
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    style M1 fill:#F9FBE7,stroke:#C0CA33
+    style M2 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_1 fill:#F9FBE7,stroke:#C0CA33
+    style nest1_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_1 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_228.mmd b/train/mermaid/hard/mermaid_228.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5f8e13130477a0fd63a201974f8bc1e877767d32
--- /dev/null
+++ b/train/mermaid/hard/mermaid_228.mmd
@@ -0,0 +1,100 @@
+graph BT
+    N0([start])
+    N1([Publishing])
+    N2[Analytics Reporting]
+    N3[[Print Layout]]
+    N4{Live Streaming}
+    N5([Game Streaming])
+    N6(Content Moderation)
+    N7(Podcast Production)
+    N8(Editing)
+    N9([Photojournalism])
+    N10(Copyright Management)
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Distribution
+        nest0_0[Media Consumption Trends Analysis]
+        nest0_1[/Advertising Sales/]
+        nest0_2[(Subscription Management)]
+    end
+    subgraph Interactive Storytelling
+        nest1_0([Audience Engagement])
+        nest1_1[Event Organization]
+        nest1_2{Social Media Management}
+        nest1_3(Audience Segmentation)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N1 --> nest0_0
+    nest0_2 --> N8
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N4 -.-> nest1_0
+    nest1_3 -.-> N8
+    N6 -.-> S0
+    S0 -.-> N10
+    S0 -.-> N9
+    N3 -.-> S2
+    S2 -.-> N10
+    S2 -.-> N7
+    S2 -.-> N5
+    S2 -.-> N8
+    N1 --> M0
+    N2 --> M0
+    N0 --> |no| M0
+    M0 --> N4
+    N0 -.-> M1
+    N3 -.-> M1
+    M1 --> N6
+    style S0 fill:#FFCCBC,stroke:#FF5722
+    style S2 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#F1F8E9,stroke:#388E3C
+    style M1 fill:#FFCCBC,stroke:#FF5722
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_229.mmd b/train/mermaid/hard/mermaid_229.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2551e2e4e9f2df17725d074f73e2217a30c1a09d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_229.mmd
@@ -0,0 +1,110 @@
+graph BT
+    N0([start])
+    N1(Interactive Storytelling)
+    N2[(Game Streaming)]
+    N3[Print Layout]
+    N4(Music Recording)
+    N5[Film Production]
+    N6(Distribution)
+    N7[/Broadcasting/]
+    N8[/Visual Effects/]
+    N9[Podcast Production]
+    N10(Content Moderation)
+    N11(Live Streaming)
+    N12[/Event Organization/]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Publishing
+        nest0_0[[Brand Partnerships]]
+        nest0_1([Content Licensing])
+        nest0_2{Public Relations}
+        nest0_3[/Radio Programming/]
+    end
+    subgraph Augmented Reality Experiences
+        nest1_0{Crisis Communication}
+        nest1_1([Media Consumption Trends Analysis])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> |no| N13
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N9 -.-> |yes| nest0_0
+    nest0_3 --> N8
+    nest1_0 -.-> nest1_1
+    N11 -.-> nest1_0
+    nest1_1 -.-> |no| N6
+    N2 -.-> S0
+    S0 --> N9
+    S0 --> |no| N13
+    S0 -.-> N7
+    N8 -.-> S1
+    S1 -.-> N13
+    S1 --> N10
+    N9 -.-> M0
+    N8 --> M0
+    M0 --> N13
+    N1 --> M1
+    N0 --> M1
+    M1 -.-> N4
+    N2 -.-> M2
+    N5 -.-> M2
+    M2 -.-> N7
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#EFEBE9,stroke:#A1887F
+    style M1 fill:#EFEBE9,stroke:#A1887F
+    style M2 fill:#FCE4EC,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E91E63,stroke-width:2px,fill:none;
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+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
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+    linkStyle 6 stroke:#BA68C8,stroke-width:2px,fill:none;
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+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 12 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_229.txt b/train/mermaid/hard/mermaid_229.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9ea23a0dd31dd98954400460f2194367f63741b9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_229.txt
@@ -0,0 +1,36 @@
+<Brand Partnerships, connectedTo, Content Licensing>
+<Brand Partnerships, partOf, Publishing>
+<Broadcasting, connectedTo, Visual Effects>
+<Content Licensing, connectedTo, Public Relations>
+<Content Licensing, partOf, Publishing>
+<Content Moderation, connectedTo, Live Streaming>
+<Crisis Communication, connectedTo, Media Consumption Trends Analysis>
+<Crisis Communication, partOf, Augmented Reality Experiences>
+<Distribution, connectedTo, Broadcasting>
+<Event Organization, no, end>
+<Film Production, connectedTo, Broadcasting>
+<Film Production, connectedTo, Distribution>
+<Game Streaming, connectedTo, Broadcasting>
+<Game Streaming, connectedTo, Podcast Production>
+<Game Streaming, connectedTo, Print Layout>
+<Game Streaming, no, end>
+<Interactive Storytelling, connectedTo, Game Streaming>
+<Interactive Storytelling, connectedTo, Music Recording>
+<Live Streaming, connectedTo, Crisis Communication>
+<Live Streaming, connectedTo, Event Organization>
+<Media Consumption Trends Analysis, no, Distribution>
+<Media Consumption Trends Analysis, partOf, Augmented Reality Experiences>
+<Music Recording, connectedTo, Film Production>
+<Podcast Production, connectedTo, Content Moderation>
+<Podcast Production, connectedTo, end>
+<Podcast Production, yes, Brand Partnerships>
+<Print Layout, connectedTo, Music Recording>
+<Public Relations, connectedTo, Radio Programming>
+<Public Relations, partOf, Publishing>
+<Radio Programming, connectedTo, Visual Effects>
+<Radio Programming, partOf, Publishing>
+<Visual Effects, connectedTo, Content Moderation>
+<Visual Effects, connectedTo, Podcast Production>
+<Visual Effects, connectedTo, end>
+<start, connectedTo, Interactive Storytelling>
+<start, connectedTo, Music Recording>
diff --git a/train/mermaid/hard/mermaid_23.mmd b/train/mermaid/hard/mermaid_23.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2f7f75c1dfc6753f0126647177019efa83234eb2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_23.mmd
@@ -0,0 +1,134 @@
+graph TD
+    N0([Product Design])
+    N1{Safety Audit}
+    N2[Design Review]
+    N3(Painting)
+    N4[[Batch Tracking]]
+    N5(Production Scheduling)
+    N6[Predictive Maintenance]
+    N7{Supplier Qualification}
+    N8[Serialization]
+    N9(Raw Material)
+    N10[[Recycling Process]]
+    N11[Logistics Planning]
+    N12([Parts Replacement])
+    N13(Welding)
+    N14([Final Testing])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Workflow Optimization
+        nest0_0{Work_in_Progress Monitoring}
+        nest0_1(Supply Chain Synchronization)
+        nest0_2([Yield Optimization])
+        nest0_3[(Inventory Check)]
+    end
+    subgraph Tool Path Generation
+        nest1_0([Automated Guided Vehicle Operation])
+        nest1_1(Shipping)
+        nest1_2[(Defect Analysis)]
+        nest1_3[[Robotics Integration]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> |transports| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> |processes| N8
+    N8 -.-> |plans| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N11 --> nest0_0
+    nest0_3 --> N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N5 --> nest1_0
+    nest1_3 -.-> N2
+    N5 --> S0
+    S0 -.-> |mixes| N7
+    S0 -.-> N13
+    N4 --> S1
+    S1 --> N13
+    S1 -.-> N14
+    N0 -.-> |procures| M0
+    N2 -.-> M0
+    N1 --> |maintains| M0
+    M0 -.-> N4
+    N1 --> M1
+    N4 --> M1
+    M1 -.-> N9
+    style N0 fill:#F2E6F5,stroke:#CB9BE1
+    style N1 fill:#FFDCD6,stroke:#FFB2A5
+    style N2 fill:#FFDCD6,stroke:#FFB2A5
+    style N3 fill:#FFDCD6,stroke:#FFB2A5
+    style N4 fill:#EDE7F6,stroke:#9575CD
+    style N5 fill:#EDE7F6,stroke:#9575CD
+    style N6 fill:#EDE7F6,stroke:#9575CD
+    style N7 fill:#EDE7F6,stroke:#9575CD
+    style N8 fill:#FFDCD6,stroke:#FFB2A5
+    style N9 fill:#EDE7F6,stroke:#9575CD
+    style N10 fill:#EDE7F6,stroke:#9575CD
+    style N11 fill:#EDE7F6,stroke:#9575CD
+    style N12 fill:#F2E6F5,stroke:#CB9BE1
+    style N13 fill:#FFDCD6,stroke:#FFB2A5
+    style N14 fill:#F2E6F5,stroke:#CB9BE1
+    style S0 fill:#F2E6F5,stroke:#CB9BE1
+    style S1 fill:#F2E6F5,stroke:#CB9BE1
+    style M0 fill:#FFDCD6,stroke:#FFB2A5
+    style M1 fill:#EDE7F6,stroke:#9575CD
+    style nest0_0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_2 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_3 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_0 fill:#EDE7F6,stroke:#9575CD
+    style nest1_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_2 fill:#FFDCD6,stroke:#FFB2A5
+    style nest1_3 fill:#FFDCD6,stroke:#FFB2A5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFB2A5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_231.mmd b/train/mermaid/hard/mermaid_231.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..03000dae2b902a9075cfd48f4e5932d8a72d2b2f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_231.mmd
@@ -0,0 +1,122 @@
+graph RL
+    N0([Copyright Management])
+    N1[Sound Design]
+    N2(Data Monetization)
+    N3([Audience Engagement])
+    N4[(Public Relations)]
+    N5[/Crisis Communication/]
+    N6(Photojournalism)
+    N7(Podcast Production)
+    N8[[Virtual Reality Content Creation]]
+    N9{Digital Marketing}
+    N10[(Content Licensing)]
+    N11[/Live Streaming/]
+    N12(Publishing)
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Audience Segmentation
+        nest0_0(Media Consumption Trends Analysis)
+        nest0_1[Content Creation]
+        nest0_2([Print Layout])
+    end
+    subgraph Editing
+        nest1_0([Brand Partnerships])
+        nest1_1[[User Generated Content Curation]]
+        nest1_2(Interactive Storytelling)
+        nest1_3(Subscription Management)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> |researches| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> |markets| N10
+    N10 --> N11
+    N11 -.-> |mixes| N12
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N10 -.-> nest0_0
+    nest0_2 -.-> N10
+    nest1_0 -.-> |designs| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 -.-> N4
+    N1 -.-> S0
+    S0 -.-> N5
+    S0 --> N4
+    N0 --> S1
+    S1 -.-> N12
+    S1 --> N8
+    N3 -.-> M1
+    N2 -.-> M1
+    M1 --> N7
+    N1 -.-> |investigates| M2
+    N2 -.-> M2
+    N0 -.-> M2
+    M2 -.-> N4
+    style N0 fill:#D3F7F9,stroke:#80DDEA
+    style N1 fill:#D3F7F9,stroke:#80DDEA
+    style N2 fill:#C2E8E6,stroke:#61CAC3
+    style N3 fill:#C2E8E6,stroke:#61CAC3
+    style N4 fill:#EFE6FF,stroke:#C2B2F0
+    style N5 fill:#C2E8E6,stroke:#61CAC3
+    style N6 fill:#EFE6FF,stroke:#C2B2F0
+    style N7 fill:#C2E8E6,stroke:#61CAC3
+    style N8 fill:#EFE6FF,stroke:#C2B2F0
+    style N9 fill:#EFE6FF,stroke:#C2B2F0
+    style N10 fill:#EFE6FF,stroke:#C2B2F0
+    style N11 fill:#C2E8E6,stroke:#61CAC3
+    style N12 fill:#C2E8E6,stroke:#61CAC3
+    style S0 fill:#C2E8E6,stroke:#61CAC3
+    style S1 fill:#C2E8E6,stroke:#61CAC3
+    style M1 fill:#D3F7F9,stroke:#80DDEA
+    style M2 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_1 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_2 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_0 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_1 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_2 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_3 fill:#D3F7F9,stroke:#80DDEA
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#61CAC3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_231.txt b/train/mermaid/hard/mermaid_231.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a5c5c608ebe2b3c22af055c62bb3067856b88115
--- /dev/null
+++ b/train/mermaid/hard/mermaid_231.txt
@@ -0,0 +1,37 @@
+<Audience Engagement, connectedTo, Podcast Production>
+<Audience Engagement, researches, Public Relations>
+<Brand Partnerships, designs, User Generated Content Curation>
+<Brand Partnerships, partOf, Editing>
+<Content Creation, connectedTo, Print Layout>
+<Content Creation, partOf, Audience Segmentation>
+<Content Licensing, connectedTo, Live Streaming>
+<Content Licensing, connectedTo, Media Consumption Trends Analysis>
+<Copyright Management, connectedTo, Public Relations>
+<Copyright Management, connectedTo, Publishing>
+<Copyright Management, connectedTo, Sound Design>
+<Copyright Management, connectedTo, Virtual Reality Content Creation>
+<Crisis Communication, connectedTo, Photojournalism>
+<Data Monetization, connectedTo, Audience Engagement>
+<Data Monetization, connectedTo, Podcast Production>
+<Data Monetization, connectedTo, Public Relations>
+<Digital Marketing, connectedTo, Brand Partnerships>
+<Digital Marketing, markets, Content Licensing>
+<Interactive Storytelling, connectedTo, Subscription Management>
+<Interactive Storytelling, partOf, Editing>
+<Live Streaming, mixes, Publishing>
+<Media Consumption Trends Analysis, connectedTo, Content Creation>
+<Media Consumption Trends Analysis, partOf, Audience Segmentation>
+<Photojournalism, connectedTo, Podcast Production>
+<Podcast Production, connectedTo, Virtual Reality Content Creation>
+<Print Layout, connectedTo, Content Licensing>
+<Print Layout, partOf, Audience Segmentation>
+<Public Relations, connectedTo, Crisis Communication>
+<Sound Design, connectedTo, Crisis Communication>
+<Sound Design, connectedTo, Data Monetization>
+<Sound Design, connectedTo, Public Relations>
+<Sound Design, investigates, Public Relations>
+<Subscription Management, connectedTo, Public Relations>
+<Subscription Management, partOf, Editing>
+<User Generated Content Curation, connectedTo, Interactive Storytelling>
+<User Generated Content Curation, partOf, Editing>
+<Virtual Reality Content Creation, connectedTo, Digital Marketing>
diff --git a/train/mermaid/hard/mermaid_232.txt b/train/mermaid/hard/mermaid_232.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fa5f137116c11ca704e8347725ec1a08aad7fa70
--- /dev/null
+++ b/train/mermaid/hard/mermaid_232.txt
@@ -0,0 +1,28 @@
+<Advertising Sales, connectedTo, Augmented Reality Experiences>
+<Advertising Sales, connectedTo, Content Moderation>
+<Advertising Sales, connectedTo, Print Layout>
+<Advertising Sales, connectedTo, Social Media Management>
+<Advertising Sales, connectedTo, start>
+<Augmented Reality Experiences, connectedTo, Broadcasting>
+<Broadcasting, connectedTo, Content Moderation>
+<Broadcasting, connectedTo, Print Layout>
+<Broadcasting, connectedTo, Radio Programming>
+<Broadcasting, connectedTo, Social Media Management>
+<Content Moderation, connectedTo, Social Media Management>
+<Copyright Management, no, Crisis Communication>
+<Copyright Management, partOf, Media Consumption Trends Analysis>
+<Crisis Communication, connectedTo, Editing>
+<Crisis Communication, partOf, Media Consumption Trends Analysis>
+<Distribution, connectedTo, Radio Programming>
+<Distribution, partOf, Virtual Reality Content Creation>
+<Editing, connectedTo, Subscription Management>
+<Editing, partOf, Media Consumption Trends Analysis>
+<Photojournalism, connectedTo, Copyright Management>
+<Photojournalism, connectedTo, Distribution>
+<Photojournalism, connectedTo, Subscription Management>
+<Radio Programming, connectedTo, Advertising Sales>
+<Radio Programming, partOf, Virtual Reality Content Creation>
+<Social Media Management, connectedTo, Print Layout>
+<Subscription Management, connectedTo, Advertising Sales>
+<Subscription Management, connectedTo, Content Moderation>
+<start, connectedTo, Photojournalism>
diff --git a/train/mermaid/hard/mermaid_233.mmd b/train/mermaid/hard/mermaid_233.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..41d805bc84b1e1b25ea272b9d4707a8ff2d47fa4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_233.mmd
@@ -0,0 +1,100 @@
+graph BT
+    N0([start])
+    N1[Food Packaging Design]
+    N2{Menu Planning}
+    N3[(Storage Solutions)]
+    N4([Customer Order Taking])
+    N5[Ingredient Sourcing]
+    N6[Baking]
+    N7(Restaurant Reservation System)
+    N8[/Packaging/]
+    N9([Distribution])
+    N10{Food Safety Inspection}
+    N11[(Branding and Marketing)]
+    N12[(Allergen Management)]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Restaurant Management
+        nest0_0([Quality Control])
+        nest0_1(Regulatory Compliance)
+        nest0_2[/Supplier Management/]
+        nest0_3([Kitchen Hygiene])
+    end
+    subgraph New Product Launch
+        nest1_0(Catering Operations)
+        nest1_1{Nutrition Analysis}
+        nest1_2(Dietary Requirement Accommodation)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N8 --> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N2 -.-> nest1_0
+    nest1_2 -.-> N1
+    N7 -.-> S0
+    S0 -.-> N10
+    S0 -.-> N12
+    N3 -.-> S1
+    S1 -.-> N11
+    S1 --> N5
+    N6 -.-> M0
+    N1 --> M0
+    M0 --> N8
+    N7 --> M2
+    N5 -.-> M2
+    M2 -.-> N9
+    style S0 fill:#F6F6F6,stroke:#CFCFCF
+    style S1 fill:#F8FDD3,stroke:#D3EB9F
+    style M0 fill:#F6F6F6,stroke:#CFCFCF
+    style M2 fill:#F8FDD3,stroke:#D3EB9F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFD54F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_234.txt b/train/mermaid/hard/mermaid_234.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6d458d08f95c5e9ce69e15f9436cbe0737a868f5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_234.txt
@@ -0,0 +1,48 @@
+<Brewing, connectedTo, Distribution>
+<Brewing, connectedTo, Food Waste Management System>
+<Brewing, connectedTo, Inventory Management>
+<Brewing, connectedTo, Restaurant Management>
+<Brewing, connectedTo, end>
+<Catering Operations, no, Nutrition Analysis>
+<Delivery Service Coordination, connectedTo, end>
+<Delivery Service Coordination, partOf, Food Safety Inspection>
+<Distribution, connectedTo, Food Preservation>
+<Food Packaging Design, connectedTo, Regulatory Compliance>
+<Food Packaging Design, yes, end>
+<Food Preparation, connectedTo, Catering Operations>
+<Food Preservation, connectedTo, end>
+<Food Processing Automation, connectedTo, end>
+<Food Processing Automation, partOf, Product Shelf_Life Testing>
+<Food Waste Management System, connectedTo, Restaurant Management>
+<Ingredient Sourcing, connectedTo, Food Packaging Design>
+<Inventory Management, connectedTo, Distribution>
+<Inventory Management, connectedTo, Quality Control>
+<Kitchen Hygiene, connectedTo, Food Packaging Design>
+<Kitchen Hygiene, connectedTo, Food Preservation>
+<Kitchen Hygiene, connectedTo, Ingredient Sourcing>
+<Kitchen Hygiene, connectedTo, Sensory Evaluation>
+<Kitchen Hygiene, connectedTo, end>
+<Kitchen Hygiene, no, Brewing>
+<Menu Planning, connectedTo, Brewing>
+<Menu Planning, connectedTo, Food Preservation>
+<New Product Launch, connectedTo, Food Preparation>
+<Nutrition Analysis, connectedTo, Ingredient Sourcing>
+<Nutrition Analysis, connectedTo, end>
+<Quality Control, connectedTo, Delivery Service Coordination>
+<Quality Control, partOf, Food Safety Inspection>
+<Regulatory Compliance, connectedTo, Menu Planning>
+<Restaurant Management, connectedTo, Inventory Management>
+<Restaurant Management, connectedTo, end>
+<Restaurant Reservation System, connectedTo, New Product Launch>
+<Restaurant Reservation System, connectedTo, Supplier Management>
+<Sensory Evaluation, connectedTo, Catering Operations>
+<Sensory Evaluation, connectedTo, Distribution>
+<Sensory Evaluation, connectedTo, Food Packaging Design>
+<Sensory Evaluation, connectedTo, Food Preservation>
+<Sensory Evaluation, connectedTo, Regulatory Compliance>
+<Sensory Evaluation, yes, Restaurant Reservation System>
+<Sensory Evaluation, yes, end>
+<Supplier Management, connectedTo, Food Processing Automation>
+<Supplier Management, partOf, Product Shelf_Life Testing>
+<start, connectedTo, Food Preservation>
+<start, connectedTo, Kitchen Hygiene>
diff --git a/train/mermaid/hard/mermaid_235.mmd b/train/mermaid/hard/mermaid_235.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3e9f5e9ce512dc77207591bd2b54ed70d577fd01
--- /dev/null
+++ b/train/mermaid/hard/mermaid_235.mmd
@@ -0,0 +1,132 @@
+graph TD
+    N0([start])
+    N1(Food Processing Automation)
+    N2{New Product Launch}
+    N3[(Distribution)]
+    N4(Packaging)
+    N5[[Food Preparation]]
+    N6(Recipe Development)
+    N7[[Menu Planning]]
+    N8(Product Shelf_Life Testing)
+    N9[Food Packaging Design]
+    N10[/Quality Control/]
+    N11[(Waste Reduction)]
+    N12[Allergen Management]
+    N13(Supply Chain Traceability)
+    N14[[Storage Solutions]]
+    N15[(Inventory Management)]
+    N16[Ingredient Traceability]
+    N17([Ingredient Sourcing])
+    N18([end])
+    S1(( ))
+    M0(( ))
+    subgraph Nutrition Analysis
+        nest0_0[/Customer Order Taking/]
+        nest0_1[Branding and Marketing]
+    end
+    subgraph Sustainable Sourcing
+        nest1_0(Restaurant Reservation System)
+        nest1_1[Food Safety Inspection]
+        nest1_2(Delivery Service Coordination)
+        nest1_3[Regulatory Compliance]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 --> N17
+    N17 --> N18
+    nest0_0 -.-> nest0_1
+    N9 -.-> nest0_0
+    nest0_1 --> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N5 -.-> nest1_0
+    nest1_3 --> N14
+    N0 --> S1
+    S1 --> N7
+    S1 --> N8
+    N5 -.-> M0
+    N2 -.-> M0
+    N3 --> M0
+    M0 -.-> N9
+    N18 --> nest0_0
+    N11 --> N8
+    N3 -.-> N15
+    style N0 fill:#FFF0CC,stroke:#FFCC80
+    style N1 fill:#FFEBEE,stroke:#E57373
+    style N2 fill:#FFF0CC,stroke:#FFCC80
+    style N3 fill:#D0E0F8,stroke:#4285F4
+    style N4 fill:#FFF0CC,stroke:#FFCC80
+    style N5 fill:#FFEBEE,stroke:#E57373
+    style N6 fill:#FFF0CC,stroke:#FFCC80
+    style N7 fill:#FFF0CC,stroke:#FFCC80
+    style N8 fill:#FFEBEE,stroke:#E57373
+    style N9 fill:#FFEBEE,stroke:#E57373
+    style N10 fill:#D0E0F8,stroke:#4285F4
+    style N11 fill:#D0E0F8,stroke:#4285F4
+    style N12 fill:#FFEBEE,stroke:#E57373
+    style N13 fill:#D0E0F8,stroke:#4285F4
+    style N14 fill:#D0E0F8,stroke:#4285F4
+    style N15 fill:#FFF0CC,stroke:#FFCC80
+    style N16 fill:#FFEBEE,stroke:#E57373
+    style N17 fill:#D0E0F8,stroke:#4285F4
+    style N18 fill:#D0E0F8,stroke:#4285F4
+    style S1 fill:#FFF0CC,stroke:#FFCC80
+    style M0 fill:#D0E0F8,stroke:#4285F4
+    style nest0_0 fill:#D0E0F8,stroke:#4285F4
+    style nest0_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_0 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_1 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_2 fill:#FFEBEE,stroke:#E57373
+    style nest1_3 fill:#D0E0F8,stroke:#4285F4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFCC80,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_236.mmd b/train/mermaid/hard/mermaid_236.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..890b65decfe9f74f6c3a00e2acbfde036521083e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_236.mmd
@@ -0,0 +1,130 @@
+graph RL
+    N0([Distribution])
+    N1[Restaurant Management]
+    N2[(Sustainable Sourcing)]
+    N3[Dietary Requirement Accommodation]
+    N4{Product Shelf_Life Testing}
+    N5{Allergen Management}
+    N6([Ingredient Sourcing])
+    N7(Cuisine Innovation)
+    N8{Quality Control}
+    N9(Packaging)
+    N10[Cooking]
+    N11(Kitchen Hygiene)
+    N12[(Baking)]
+    N13([Food Packaging Design])
+    S0(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Consumer Feedback Collection
+        nest0_0(Supply Chain Traceability)
+        nest0_1{Customer Order Taking}
+    end
+    subgraph Catering Operations
+        nest1_0[(Food Preparation)]
+        nest1_1(Nutrition Analysis)
+        nest1_2([Brewing])
+        nest1_3(Inventory Management)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> |audits| N12
+    N12 --> N13
+    nest0_0 -.-> nest0_1
+    N1 -.-> nest0_0
+    nest0_1 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N8 --> nest1_0
+    nest1_3 --> N2
+    N0 --> S0
+    S0 --> N13
+    S0 -.-> N7
+    S0 --> N2
+    S0 -.-> N10
+    N4 -.-> M0
+    N6 --> M0
+    N2 -.-> M0
+    M0 -.-> N9
+    N6 --> M1
+    N2 -.-> |transports| M1
+    M1 -.-> N13
+    N3 -.-> M2
+    N2 -.-> M2
+    N0 --> M2
+    N5 --> M2
+    M2 -.-> N7
+    style N0 fill:#C8E6C9,stroke:#388E3C
+    style N1 fill:#C8E6C9,stroke:#388E3C
+    style N2 fill:#D1C4E9,stroke:#7E57C2
+    style N3 fill:#D1C4E9,stroke:#7E57C2
+    style N4 fill:#F2E6F5,stroke:#CB9BE1
+    style N5 fill:#D1C4E9,stroke:#7E57C2
+    style N6 fill:#D1C4E9,stroke:#7E57C2
+    style N7 fill:#D1C4E9,stroke:#7E57C2
+    style N8 fill:#F2E6F5,stroke:#CB9BE1
+    style N9 fill:#D1C4E9,stroke:#7E57C2
+    style N10 fill:#F2E6F5,stroke:#CB9BE1
+    style N11 fill:#C8E6C9,stroke:#388E3C
+    style N12 fill:#D1C4E9,stroke:#7E57C2
+    style N13 fill:#C8E6C9,stroke:#388E3C
+    style S0 fill:#C8E6C9,stroke:#388E3C
+    style M0 fill:#C8E6C9,stroke:#388E3C
+    style M1 fill:#D1C4E9,stroke:#7E57C2
+    style M2 fill:#C8E6C9,stroke:#388E3C
+    style nest0_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest0_1 fill:#C8E6C9,stroke:#388E3C
+    style nest1_0 fill:#C8E6C9,stroke:#388E3C
+    style nest1_1 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_2 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_3 fill:#F2E6F5,stroke:#CB9BE1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_236.txt b/train/mermaid/hard/mermaid_236.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8b2cb7e1dc42a6e22b984433af876f30b36e6b15
--- /dev/null
+++ b/train/mermaid/hard/mermaid_236.txt
@@ -0,0 +1,39 @@
+<Allergen Management, connectedTo, Cuisine Innovation>
+<Allergen Management, connectedTo, Ingredient Sourcing>
+<Baking, connectedTo, Food Packaging Design>
+<Brewing, connectedTo, Inventory Management>
+<Brewing, partOf, Catering Operations>
+<Cooking, connectedTo, Kitchen Hygiene>
+<Cuisine Innovation, connectedTo, Quality Control>
+<Customer Order Taking, connectedTo, Cooking>
+<Customer Order Taking, partOf, Consumer Feedback Collection>
+<Dietary Requirement Accommodation, connectedTo, Cuisine Innovation>
+<Dietary Requirement Accommodation, connectedTo, Product Shelf_Life Testing>
+<Distribution, connectedTo, Cooking>
+<Distribution, connectedTo, Cuisine Innovation>
+<Distribution, connectedTo, Food Packaging Design>
+<Distribution, connectedTo, Restaurant Management>
+<Distribution, connectedTo, Sustainable Sourcing>
+<Food Preparation, connectedTo, Nutrition Analysis>
+<Food Preparation, partOf, Catering Operations>
+<Ingredient Sourcing, connectedTo, Cuisine Innovation>
+<Ingredient Sourcing, connectedTo, Food Packaging Design>
+<Ingredient Sourcing, connectedTo, Packaging>
+<Inventory Management, connectedTo, Sustainable Sourcing>
+<Inventory Management, partOf, Catering Operations>
+<Kitchen Hygiene, audits, Baking>
+<Nutrition Analysis, connectedTo, Brewing>
+<Nutrition Analysis, partOf, Catering Operations>
+<Packaging, connectedTo, Cooking>
+<Product Shelf_Life Testing, connectedTo, Allergen Management>
+<Product Shelf_Life Testing, connectedTo, Packaging>
+<Quality Control, connectedTo, Food Preparation>
+<Quality Control, connectedTo, Packaging>
+<Restaurant Management, connectedTo, Supply Chain Traceability>
+<Restaurant Management, connectedTo, Sustainable Sourcing>
+<Supply Chain Traceability, connectedTo, Customer Order Taking>
+<Supply Chain Traceability, partOf, Consumer Feedback Collection>
+<Sustainable Sourcing, connectedTo, Cuisine Innovation>
+<Sustainable Sourcing, connectedTo, Dietary Requirement Accommodation>
+<Sustainable Sourcing, connectedTo, Packaging>
+<Sustainable Sourcing, transports, Food Packaging Design>
diff --git a/train/mermaid/hard/mermaid_24.mmd b/train/mermaid/hard/mermaid_24.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..40ae0b1ffdfe31b208107cf55aafb5c33540934d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_24.mmd
@@ -0,0 +1,130 @@
+graph LR
+    N0([Safety Audit])
+    N1[(Recycling Process)]
+    N2[[Automated Guided Vehicle Operation]]
+    N3[Packaging]
+    N4{Inspection}
+    N5{Quality Control}
+    N6[[Design Review]]
+    N7[Tool Setup]
+    N8[Final Testing]
+    N9[Robotics Integration]
+    N10(Serialization)
+    N11(Production Scheduling)
+    N12[(Automated Assembly)]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Logistics Planning
+        nest0_0(Machine Calibration)
+        nest0_1(Welding)
+        nest0_2[(Storage)]
+        nest0_3(Ergonomics Assessment)
+    end
+    subgraph Shipping
+        nest1_0[Supply Chain Synchronization]
+        nest1_1[(Maintenance)]
+        nest1_2[(Work_in_Progress Monitoring)]
+        nest1_3[(Environmental Compliance)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> |improves| N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N9 --> nest0_0
+    nest0_3 --> |schedules| N7
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N10 -.-> nest1_0
+    nest1_3 --> N11
+    N6 --> S0
+    S0 --> N10
+    S0 -.-> N9
+    S0 --> |assembles| N11
+    N4 --> S1
+    S1 -.-> N6
+    S1 -.-> N10
+    N3 -.-> |repairs| M0
+    N0 --> M0
+    M0 --> N10
+    N1 --> M1
+    N0 --> M1
+    N3 -.-> |monitors| M1
+    N2 --> M1
+    M1 -.-> N5
+    style N0 fill:#E1BEE7,stroke:#9C27B0
+    style N1 fill:#E1BEE7,stroke:#9C27B0
+    style N2 fill:#EDF5F3,stroke:#A1D7CD
+    style N3 fill:#CADEDE,stroke:#94C0C0
+    style N4 fill:#CADEDE,stroke:#94C0C0
+    style N5 fill:#EDF5F3,stroke:#A1D7CD
+    style N6 fill:#E1BEE7,stroke:#9C27B0
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style N8 fill:#EDF5F3,stroke:#A1D7CD
+    style N9 fill:#E1BEE7,stroke:#9C27B0
+    style N10 fill:#CADEDE,stroke:#94C0C0
+    style N11 fill:#EDF5F3,stroke:#A1D7CD
+    style N12 fill:#E1BEE7,stroke:#9C27B0
+    style S0 fill:#EDF5F3,stroke:#A1D7CD
+    style S1 fill:#E1BEE7,stroke:#9C27B0
+    style M0 fill:#E1BEE7,stroke:#9C27B0
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_2 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_3 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_0 fill:#CADEDE,stroke:#94C0C0
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    style nest1_2 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_3 fill:#E1BEE7,stroke:#9C27B0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1D7CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_24.txt b/train/mermaid/hard/mermaid_24.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f7e9c31d3955a224b324e8331628508e5a65d619
--- /dev/null
+++ b/train/mermaid/hard/mermaid_24.txt
@@ -0,0 +1,41 @@
+<Automated Guided Vehicle Operation, connectedTo, Packaging>
+<Automated Guided Vehicle Operation, connectedTo, Quality Control>
+<Design Review, assembles, Production Scheduling>
+<Design Review, connectedTo, Robotics Integration>
+<Design Review, connectedTo, Serialization>
+<Design Review, connectedTo, Tool Setup>
+<Environmental Compliance, connectedTo, Production Scheduling>
+<Environmental Compliance, partOf, Shipping>
+<Ergonomics Assessment, partOf, Logistics Planning>
+<Ergonomics Assessment, schedules, Tool Setup>
+<Final Testing, connectedTo, Robotics Integration>
+<Inspection, connectedTo, Design Review>
+<Inspection, connectedTo, Quality Control>
+<Inspection, connectedTo, Serialization>
+<Machine Calibration, connectedTo, Welding>
+<Machine Calibration, partOf, Logistics Planning>
+<Maintenance, connectedTo, Work_in_Progress Monitoring>
+<Maintenance, partOf, Shipping>
+<Packaging, connectedTo, Inspection>
+<Packaging, monitors, Quality Control>
+<Packaging, repairs, Serialization>
+<Production Scheduling, connectedTo, Automated Assembly>
+<Quality Control, connectedTo, Design Review>
+<Recycling Process, connectedTo, Automated Guided Vehicle Operation>
+<Recycling Process, connectedTo, Quality Control>
+<Robotics Integration, connectedTo, Machine Calibration>
+<Robotics Integration, connectedTo, Serialization>
+<Safety Audit, connectedTo, Quality Control>
+<Safety Audit, connectedTo, Recycling Process>
+<Safety Audit, connectedTo, Serialization>
+<Serialization, connectedTo, Supply Chain Synchronization>
+<Serialization, improves, Production Scheduling>
+<Storage, connectedTo, Ergonomics Assessment>
+<Storage, partOf, Logistics Planning>
+<Supply Chain Synchronization, connectedTo, Maintenance>
+<Supply Chain Synchronization, partOf, Shipping>
+<Tool Setup, connectedTo, Final Testing>
+<Welding, connectedTo, Storage>
+<Welding, partOf, Logistics Planning>
+<Work_in_Progress Monitoring, connectedTo, Environmental Compliance>
+<Work_in_Progress Monitoring, partOf, Shipping>
diff --git a/train/mermaid/hard/mermaid_241.txt b/train/mermaid/hard/mermaid_241.txt
new file mode 100644
index 0000000000000000000000000000000000000000..254bc558ed888d33dabfe80897c9a986a7abccaf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_241.txt
@@ -0,0 +1,38 @@
+<Anti_Doping Control, connectedTo, Athlete Brand Management>
+<Anti_Doping Control, connectedTo, Venue Booking>
+<Athlete Brand Management, connectedTo, Ticketing Sales>
+<Athlete Brand Management, partOf, Youth Development Programs>
+<Data Analytics in Sports, connectedTo, Sports Medicine>
+<Data Analytics in Sports, connectedTo, Talent Scouting>
+<Fan Club Management, connectedTo, Fan Engagement>
+<Fan Club Management, connectedTo, Tournament Organization>
+<Fan Engagement, connectedTo, Refereeing>
+<Fan Engagement, connectedTo, Sports Medicine>
+<Fitness Conditioning, connectedTo, Sponsorship Management>
+<Fitness Conditioning, partOf, Game Strategy>
+<Injury Management, yes, Sports Medicine>
+<Merchandise Sales, connectedTo, Sports Medicine>
+<Merchandise Sales, partOf, Game Strategy>
+<Player Transfer, connectedTo, Anti_Doping Control>
+<Player Transfer, connectedTo, Rule Enforcement>
+<Player Transfer, connectedTo, Sports Medicine>
+<Player Transfer, connectedTo, end>
+<Player Transfer, yes, Fan Club Management>
+<Refereeing, connectedTo, Data Analytics in Sports>
+<Rule Enforcement, connectedTo, Fan Club Management>
+<Rule Enforcement, connectedTo, Fitness Conditioning>
+<Rule Enforcement, connectedTo, Tournament Organization>
+<Sponsorship Management, connectedTo, Sports Technology Integration>
+<Sponsorship Management, partOf, Game Strategy>
+<Sports Medicine, connectedTo, end>
+<Sports Technology Integration, connectedTo, Merchandise Sales>
+<Sports Technology Integration, partOf, Game Strategy>
+<Talent Scouting, connectedTo, Anti_Doping Control>
+<Ticketing Sales, connectedTo, Venue Booking>
+<Ticketing Sales, partOf, Youth Development Programs>
+<Tournament Organization, connectedTo, Injury Management>
+<Venue Booking, connectedTo, Injury Management>
+<Venue Booking, connectedTo, Sports Medicine>
+<Venue Booking, connectedTo, Tournament Organization>
+<Venue Booking, connectedTo, end>
+<start, connectedTo, Player Transfer>
diff --git a/train/mermaid/hard/mermaid_242.mmd b/train/mermaid/hard/mermaid_242.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..89f605968c239d228a4aa6256f3603fe64487b50
--- /dev/null
+++ b/train/mermaid/hard/mermaid_242.mmd
@@ -0,0 +1,127 @@
+graph LR
+    N0([start])
+    N1[(Esports Event Management)]
+    N2[[Sports Betting Regulation]]
+    N3[Youth Development Programs]
+    N4[Fan Club Management]
+    N5[Sports Analytics]
+    N6([Coaching])
+    N7[(Refereeing)]
+    N8{Fan Experience Enhancement}
+    N9[Player Recruitment]
+    N10([Athlete Nutrition Planning])
+    N11[/Team Management/]
+    N12(Community Sports Programs)
+    N13[League Management]
+    N14[Sports Psychology]
+    N15[Fitness Conditioning]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Talent Scouting
+        nest0_0(Media Rights Negotiation)
+        nest0_1[Fan Engagement]
+    end
+    subgraph Stadium Operations
+        nest1_0(Injury Management)
+        nest1_1{Data Analytics in Sports}
+        nest1_2[Game Strategy]
+        nest1_3[/Athlete Brand Management/]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> |yes| N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> |yes| N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    N11 -.-> nest0_0
+    nest0_1 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N6 --> nest1_0
+    nest1_3 -.-> N11
+    N5 --> S0
+    S0 --> N12
+    S0 -.-> N14
+    N3 --> S1
+    S1 -.-> N9
+    S1 --> N8
+    S1 --> N6
+    S1 --> N11
+    N12 -.-> M0
+    N6 -.-> M0
+    M0 -.-> N14
+    N8 --> M1
+    N4 -.-> M1
+    N9 --> M1
+    M1 --> N11
+    N4 --> M2
+    N3 -.-> M2
+    N0 --> M2
+    N2 --> |yes| M2
+    M2 --> N9
+    style S0 fill:#FAEBF3,stroke:#F7BEE0
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style M0 fill:#FAEBF3,stroke:#F7BEE0
+    style M1 fill:#E3F2FD,stroke:#64B5F6
+    style M2 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#F7BEE0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_243.mmd b/train/mermaid/hard/mermaid_243.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8a61274aa1b8eefdd101132db5187b48158cfdf3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_243.mmd
@@ -0,0 +1,119 @@
+graph RL
+    N0([start])
+    N1[[Fan Club Management]]
+    N2([Athlete Performance Tracking])
+    N3(Fan Engagement)
+    N4[Stadium Operations]
+    N5{Sports Technology Integration}
+    N6(Media Rights Negotiation)
+    N7{Event Broadcasting}
+    N8[/Match Play/]
+    N9(Fitness Conditioning)
+    N10[/Sports Medicine/]
+    N11[Sports Marketing]
+    N12[Coaching]
+    N13[(Training Session)]
+    N14[Community Sports Programs]
+    N15(Player Transfer)
+    N16[/Injury Management/]
+    N17[/Tournament Organization/]
+    N18[Player Recruitment]
+    N19([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Fan Experience Enhancement
+        nest0_0[Sponsorship Management]
+        nest0_1([Athlete Brand Management])
+    end
+    subgraph Rule Enforcement
+        nest1_0(Venue Booking)
+        nest1_1([Youth Development Programs])
+        nest1_2([Data Analytics in Sports])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> |no| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> |no| N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 --> N17
+    N17 -.-> N18
+    N18 -.-> N19
+    nest0_0 -.-> nest0_1
+    N9 --> nest0_0
+    nest0_1 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N1 --> nest1_0
+    nest1_2 --> N13
+    N1 --> S0
+    S0 -.-> N8
+    S0 --> N19
+    S0 -.-> |yes| N6
+    N16 --> S1
+    S1 -.-> N19
+    S1 --> N18
+    N2 --> M1
+    N5 -.-> M1
+    N0 --> M1
+    M1 -.-> N9
+    N3 --> M2
+    N4 --> M2
+    M2 -.-> N18
+    style S0 fill:#FFE0B2,stroke:#FF9800
+    style S1 fill:#F9FBE7,stroke:#DCE775
+    style M1 fill:#F8BBD0,stroke:#E91E63
+    style M2 fill:#FFE0B2,stroke:#FF9800
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#E91E63,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_244.txt b/train/mermaid/hard/mermaid_244.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7bd3cffe7475d4de0ecf1a50be112a444899d785
--- /dev/null
+++ b/train/mermaid/hard/mermaid_244.txt
@@ -0,0 +1,31 @@
+<Accessibility in Sports Venues, connectedTo, Scorekeeping>
+<Accessibility in Sports Venues, partOf, Data Analytics in Sports>
+<Anti_Doping Control, connectedTo, Fan Experience Enhancement>
+<Anti_Doping Control, partOf, Rule Enforcement>
+<Athlete Brand Management, connectedTo, Fan Engagement>
+<Athlete Brand Management, partOf, Rule Enforcement>
+<Event Broadcasting, connectedTo, Training Session>
+<Fan Engagement, connectedTo, Anti_Doping Control>
+<Fan Engagement, partOf, Rule Enforcement>
+<Fan Experience Enhancement, connectedTo, Accessibility in Sports Venues>
+<Fan Experience Enhancement, connectedTo, Event Broadcasting>
+<Fan Experience Enhancement, connectedTo, Match Play>
+<Fan Experience Enhancement, connectedTo, Ticketing Sales>
+<Fan Experience Enhancement, connectedTo, Training Session>
+<Match Play, connectedTo, Athlete Brand Management>
+<Match Play, partOf, Rule Enforcement>
+<Scorekeeping, connectedTo, Fan Experience Enhancement>
+<Scorekeeping, partOf, Data Analytics in Sports>
+<Sports Medicine, connectedTo, Fan Experience Enhancement>
+<Sports Medicine, connectedTo, Ticketing Sales>
+<Sports Psychology, connectedTo, Fan Experience Enhancement>
+<Sports Psychology, connectedTo, Talent Scouting>
+<Sports Psychology, connectedTo, Ticketing Sales>
+<Talent Scouting, connectedTo, Fan Experience Enhancement>
+<Talent Scouting, connectedTo, Sports Medicine>
+<Team Management, connectedTo, Event Broadcasting>
+<Ticketing Sales, connectedTo, Event Broadcasting>
+<Ticketing Sales, connectedTo, Team Management>
+<Ticketing Sales, connectedTo, Training Session>
+<start, connectedTo, Sports Psychology>
+<start, connectedTo, Ticketing Sales>
diff --git a/train/mermaid/hard/mermaid_245.mmd b/train/mermaid/hard/mermaid_245.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fbcf1156abf32cbed074e1d28396a8fc76924a78
--- /dev/null
+++ b/train/mermaid/hard/mermaid_245.mmd
@@ -0,0 +1,94 @@
+graph BT
+    N0([start])
+    N1[(Sports Betting Regulation)]
+    N2[/Stadium Operations/]
+    N3[Player Recruitment]
+    N4[(Rule Enforcement)]
+    N5[(Data Analytics in Sports)]
+    N6(Athlete Nutrition Planning)
+    N7[Game Strategy]
+    N8[[Anti_Doping Control]]
+    N9(Sports Psychology)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Sports Technology Integration
+        nest0_0[Athlete Brand Management]
+        nest0_1[Fitness Conditioning]
+    end
+    subgraph Fan Experience Enhancement
+        nest1_0[Coaching]
+        nest1_1[Match Play]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> |no| N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    N4 --> nest0_0
+    nest0_1 --> N6
+    nest1_0 --> nest1_1
+    N7 --> nest1_0
+    nest1_1 -.-> N7
+    N3 --> S0
+    S0 --> N7
+    S0 --> N5
+    S0 --> N9
+    N1 -.-> S1
+    S1 -.-> N8
+    S1 -.-> N5
+    N4 -.-> S2
+    S2 --> N6
+    S2 -.-> N9
+    S2 -.-> N7
+    N1 --> M0
+    N0 -.-> M0
+    M0 -.-> N3
+    N0 --> M1
+    N1 --> M1
+    M1 -.-> N3
+    style S0 fill:#E0F2F1,stroke:#4DB6AC
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style S2 fill:#E8F5E9,stroke:#66BB6A
+    style M0 fill:#E8F5E9,stroke:#66BB6A
+    style M1 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_249.mmd b/train/mermaid/hard/mermaid_249.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9cc49f07beb6c6d4b9cd626c753eb35a79fe62f2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_249.mmd
@@ -0,0 +1,86 @@
+graph BT
+    N0([start])
+    N1([Packaging])
+    N2[Ready_to_Wear Collection Launch]
+    N3[Accessory Design]
+    N4[[Customer Loyalty Programs]]
+    N5[Marketing Campaign]
+    N6(Haute Couture Creation)
+    N7[[Design Sketching]]
+    N8([Embroidery and Embellishment])
+    N9[Footwear Production]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Inventory Management
+        nest0_0[(Quality Check)]
+        nest0_1{Influencer Collaboration}
+    end
+    subgraph Garment Fitting Session
+        nest1_0[[Sample Creation]]
+        nest1_1[(Garment Production)]
+    end
+    N0 -.-> |yes| N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> |no| N9
+    nest0_0 --> nest0_1
+    N6 --> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 -.-> nest1_1
+    N6 --> |no| nest1_0
+    nest1_1 -.-> N7
+    N5 --> S0
+    S0 --> N8
+    S0 -.-> N7
+    S0 --> N9
+    N3 -.-> S1
+    S1 -.-> |no| N7
+    S1 --> N9
+    S1 -.-> N5
+    N1 --> S2
+    S2 --> N5
+    S2 -.-> N7
+    N0 --> M2
+    N3 -.-> M2
+    M2 --> N6
+    style S0 fill:#E6EE9C,stroke:#CDDC39
+    style S1 fill:#C8EDFF,stroke:#82DAFF
+    style S2 fill:#C8EDFF,stroke:#82DAFF
+    style M2 fill:#E6EE9C,stroke:#CDDC39
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CDDC39,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_250.mmd b/train/mermaid/hard/mermaid_250.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..232001334d94063074112ce669cf4a56915f0458
--- /dev/null
+++ b/train/mermaid/hard/mermaid_250.mmd
@@ -0,0 +1,106 @@
+graph TD
+    N0([Influencer Collaboration])
+    N1[Retail Store Merchandising]
+    N2{Brand Licensing}
+    N3[(Inventory Management)]
+    N4([Trend Research])
+    N5[Material Sourcing]
+    N6[(Retail Sales)]
+    N7(Wholesale Distribution)
+    N8(E_commerce Management)
+    N9[/Distribution/]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Marketing Campaign
+        nest0_0[Supply Chain Transparency]
+        nest0_1[Design Sketching]
+        nest0_2{Sustainable Fashion Practices}
+    end
+    subgraph Ready_to_Wear Collection Launch
+        nest1_0(Customer Loyalty Programs)
+        nest1_1[Haute Couture Creation]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> |patterns| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    nest0_1 --> |collaborates| nest0_2
+    N1 --> |sews| nest0_0
+    nest0_2 -.-> N2
+    nest1_0 -.-> nest1_1
+    N4 --> nest1_0
+    nest1_1 -.-> N8
+    N1 --> S0
+    S0 --> N7
+    S0 -.-> N4
+    S0 -.-> N9
+    N0 --> S1
+    S1 --> N4
+    S1 --> N5
+    S1 --> N6
+    N3 -.-> S2
+    S2 --> |retails| N7
+    S2 -.-> N6
+    N2 -.-> M1
+    N0 -.-> M1
+    N7 -.-> M1
+    M1 -.-> N9
+    style N0 fill:#F2E6F5,stroke:#CB9BE1
+    style N1 fill:#F2E6F5,stroke:#CB9BE1
+    style N2 fill:#F2E6F5,stroke:#CB9BE1
+    style N3 fill:#FFCCBC,stroke:#FF5722
+    style N4 fill:#F2E6F5,stroke:#CB9BE1
+    style N5 fill:#FFCCBC,stroke:#FF5722
+    style N6 fill:#FCFCE7,stroke:#DCE775
+    style N7 fill:#F2E6F5,stroke:#CB9BE1
+    style N8 fill:#F2E6F5,stroke:#CB9BE1
+    style N9 fill:#FFCCBC,stroke:#FF5722
+    style S0 fill:#F2E6F5,stroke:#CB9BE1
+    style S1 fill:#F2E6F5,stroke:#CB9BE1
+    style S2 fill:#FFCCBC,stroke:#FF5722
+    style M1 fill:#FFCCBC,stroke:#FF5722
+    style nest0_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest0_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest0_2 fill:#FCFCE7,stroke:#DCE775
+    style nest1_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_1 fill:#F2E6F5,stroke:#CB9BE1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CB9BE1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_251.txt b/train/mermaid/hard/mermaid_251.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4fb82110630a79a6d31d5e5d2604224d775f42a1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_251.txt
@@ -0,0 +1,29 @@
+<Brand Building, connectedTo, Seasonal Collection Planning>
+<Brand Building, partOf, Design Sketching>
+<Brand Licensing, connectedTo, Fashion Show Production>
+<Brand Licensing, connectedTo, Retail Sales>
+<Brand Licensing, connectedTo, Seasonal Collection Planning>
+<Customer Loyalty Programs, connectedTo, Seasonal Collection Planning>
+<E_commerce Management, publishes, Material Sourcing>
+<Fashion Show Production, connectedTo, E_commerce Management>
+<Fashion Show Production, connectedTo, Seasonal Collection Planning>
+<Influencer Collaboration, connectedTo, Sustainable Fashion Practices>
+<Influencer Collaboration, partOf, Accessory Design>
+<Material Sourcing, connectedTo, Customer Loyalty Programs>
+<Material Sourcing, connectedTo, Seasonal Collection Planning>
+<Material Sourcing, connectedTo, Textile Manufacturing>
+<Ready_to_Wear Collection Launch, connectedTo, Brand Building>
+<Ready_to_Wear Collection Launch, partOf, Design Sketching>
+<Retail Sales, connectedTo, Influencer Collaboration>
+<Retail Sales, partOf, Accessory Design>
+<Sample Creation, connectedTo, Trend Research>
+<Seasonal Collection Planning, connectedTo, Distribution>
+<Sustainable Fashion Practices, connectedTo, Trend Research>
+<Sustainable Fashion Practices, partOf, Accessory Design>
+<Textile Manufacturing, connectedTo, Ready_to_Wear Collection Launch>
+<Textile Manufacturing, partOf, Design Sketching>
+<Trend Research, connectedTo, Brand Licensing>
+<Trend Research, connectedTo, Distribution>
+<Trend Research, connectedTo, Material Sourcing>
+<Trend Research, connectedTo, Seasonal Collection Planning>
+<Trend Research, photographs, E_commerce Management>
diff --git a/train/mermaid/hard/mermaid_254.txt b/train/mermaid/hard/mermaid_254.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cf99a5daa953a93bd29494210a6bee51c2fb48d1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_254.txt
@@ -0,0 +1,35 @@
+<Custom Apparel Design, connectedTo, Fashion Show Production>
+<Customer Loyalty Programs, connectedTo, Return Processing>
+<E_commerce Management, connectedTo, Design Sketching>
+<Embroidery and Embellishment, connectedTo, Global Sourcing Strategy>
+<Fashion Show Production, connectedTo, Embroidery and Embellishment>
+<Garment Production, connectedTo, Intellectual Property Protection>
+<Garment Production, partOf, Inventory Management>
+<Global Sourcing Strategy, connectedTo, Customer Loyalty Programs>
+<Global Sourcing Strategy, connectedTo, Haute Couture Creation>
+<Haute Couture Creation, connectedTo, Textile Manufacturing>
+<Haute Couture Creation, partOf, Influencer Collaboration>
+<Intellectual Property Protection, connectedTo, Customer Loyalty Programs>
+<Intellectual Property Protection, partOf, Inventory Management>
+<Packaging, connectedTo, Garment Production>
+<Packaging, partOf, Inventory Management>
+<Pattern Making, connectedTo, E_commerce Management>
+<Pattern Making, partOf, Influencer Collaboration>
+<Product Photography, connectedTo, Fashion Show Production>
+<Product Photography, connectedTo, Global Sourcing Strategy>
+<Product Photography, connectedTo, Retail Sales>
+<Product Photography, connectedTo, Return Processing>
+<Product Photography, connectedTo, Seasonal Collection Planning>
+<Retail Sales, collaborates, Seasonal Collection Planning>
+<Return Processing, connectedTo, E_commerce Management>
+<Seasonal Collection Planning, connectedTo, Customer Loyalty Programs>
+<Seasonal Collection Planning, connectedTo, Embroidery and Embellishment>
+<Seasonal Collection Planning, connectedTo, Return Processing>
+<Seasonal Collection Planning, connectedTo, Styling>
+<Styling, connectedTo, Custom Apparel Design>
+<Styling, connectedTo, Packaging>
+<Supply Chain Transparency, connectedTo, Product Photography>
+<Supply Chain Transparency, connectedTo, Seasonal Collection Planning>
+<Textile Manufacturing, connectedTo, Pattern Making>
+<Textile Manufacturing, partOf, Influencer Collaboration>
+<start, connectedTo, Supply Chain Transparency>
diff --git a/train/mermaid/hard/mermaid_256.mmd b/train/mermaid/hard/mermaid_256.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..59d8bb74d21b1dad07664eee4bd73849a7263560
--- /dev/null
+++ b/train/mermaid/hard/mermaid_256.mmd
@@ -0,0 +1,125 @@
+graph RL
+    N0([start])
+    N1[Fabric Innovation]
+    N2([Material Sourcing])
+    N3[[Wholesale Distribution]]
+    N4([Design Sketching])
+    N5[(Retail Store Merchandising)]
+    N6(Custom Apparel Design)
+    N7(Packaging)
+    N8[Footwear Production]
+    N9[/Textile Manufacturing/]
+    N10[Inventory Management]
+    N11(Distribution)
+    N12[(Quality Check)]
+    N13[Product Photography]
+    N14[Color Palette Selection]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Fashion Show Production
+        nest0_0(Pattern Making)
+        nest0_1[Accessory Design]
+        nest0_2[(PR and Media Outreach)]
+    end
+    subgraph Brand Licensing
+        nest1_0[Embroidery and Embellishment]
+        nest1_1[/Supply Chain Transparency/]
+        nest1_2(Retail Sales)
+        nest1_3[/Customer Loyalty Programs/]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N3 --> nest0_0
+    nest0_2 -.-> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N6 --> nest1_0
+    nest1_3 --> N12
+    N2 -.-> S0
+    S0 -.-> N6
+    S0 -.-> N5
+    N9 -.-> S1
+    S1 --> N14
+    S1 --> N12
+    N11 --> S2
+    S2 --> N15
+    S2 -.-> N14
+    N0 -.-> M0
+    N1 -.-> M0
+    M0 --> N3
+    N2 --> M1
+    N1 -.-> M1
+    M1 --> N15
+    N1 -.-> |no| M2
+    N0 --> M2
+    M2 --> N4
+    style S0 fill:#FFF9D4,stroke:#FFE69C
+    style S1 fill:#ECF0FD,stroke:#B8C0F5
+    style S2 fill:#FFF9D4,stroke:#FFE69C
+    style M0 fill:#FFF9D4,stroke:#FFE69C
+    style M1 fill:#FFF9D4,stroke:#FFE69C
+    style M2 fill:#ECF0FD,stroke:#B8C0F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFE69C,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_257.txt b/train/mermaid/hard/mermaid_257.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ff522e9eba86b53b674b143cfebf568756d0fa2c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_257.txt
@@ -0,0 +1,32 @@
+<Change Management, connectedTo, Candidate Sourcing>
+<Change Management, connectedTo, Leadership Training>
+<Conflict Resolution, connectedTo, Talent Management>
+<Diversity and Inclusion Initiatives, connectedTo, Payroll Processing>
+<Diversity and Inclusion Initiatives, partOf, Employee Data Management>
+<Employee Relations, compensates, Performance Appraisal>
+<Employee Relations, connectedTo, Change Management>
+<Employee Relations, connectedTo, HR Budgeting>
+<Employee Relations, connectedTo, Performance Appraisal>
+<Employee Training, connectedTo, Change Management>
+<Employee Training, connectedTo, Performance Appraisal>
+<Employee Training, connectedTo, Recruitment Planning>
+<Employee Training, connectedTo, Talent Management>
+<Employee Training, disciplines, Conflict Resolution>
+<Global Mobility Programs, connectedTo, Interview Scheduling>
+<Global Mobility Programs, partOf, HR Analytics>
+<HR Budgeting, connectedTo, Performance Appraisal>
+<HR Information System Implementation, connectedTo, Workforce Planning>
+<HR Information System Implementation, partOf, HR Analytics>
+<Health and Safety Management, connectedTo, Interview Scheduling>
+<Interview Scheduling, connectedTo, Employee Training>
+<Leadership Training, connectedTo, Diversity and Inclusion Initiatives>
+<Leadership Training, partOf, Employee Data Management>
+<Payroll Processing, connectedTo, Employee Relations>
+<Payroll Processing, connectedTo, Performance Appraisal>
+<Performance Appraisal, connectedTo, Change Management>
+<Recruitment Planning, connectedTo, Performance Appraisal>
+<Recruitment Planning, recruits, Payroll Processing>
+<Talent Management, connectedTo, Recruitment Planning>
+<Talent Management, plans, HR Information System Implementation>
+<Workforce Planning, connectedTo, Global Mobility Programs>
+<Workforce Planning, partOf, HR Analytics>
diff --git a/train/mermaid/hard/mermaid_259.mmd b/train/mermaid/hard/mermaid_259.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0935bc3a413d415aa2edd8466c830592c2517285
--- /dev/null
+++ b/train/mermaid/hard/mermaid_259.mmd
@@ -0,0 +1,138 @@
+graph TD
+    N0([start])
+    N1(HR Analytics)
+    N2[Candidate Sourcing]
+    N3[[Wellness Programs]]
+    N4(Leave Management)
+    N5[/Onboarding Process/]
+    N6[[Team Building Activities]]
+    N7[Succession Planning]
+    N8[[HR Information System Implementation]]
+    N9[Employee Recognition Programs]
+    N10(HR Budgeting)
+    N11([Exit Interviews])
+    N12(Payroll Processing)
+    N13[[Workforce Planning]]
+    N14{Leadership Training}
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Work_Life Balance Initiatives
+        nest0_0[[Employee Training]]
+        nest0_1(Job Posting)
+        nest0_2[/Employee Data Management/]
+    end
+    subgraph Skill Development Programs
+        nest1_0(Health and Safety Management)
+        nest1_1[/Employee Engagement Surveys/]
+        nest1_2{Compensation and Benefits}
+        nest1_3[[Global Mobility Programs]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> |processes| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N9 --> nest0_0
+    nest0_2 -.-> N15
+    nest1_0 -.-> nest1_1
+    nest1_1 --> |counsels| nest1_2
+    nest1_2 -.-> nest1_3
+    N8 -.-> |compensates| nest1_0
+    nest1_3 -.-> N7
+    N4 --> S0
+    S0 -.-> N11
+    S0 -.-> N13
+    S0 --> N7
+    N6 -.-> S1
+    S1 --> N14
+    S1 -.-> |protects| N10
+    S1 --> N8
+    S1 -.-> |resolves| N9
+    N0 -.-> M1
+    N1 --> M1
+    M1 -.-> N3
+    N4 --> M2
+    N3 --> M2
+    M2 -.-> N7
+    style N0 fill:#F5F5F5,stroke:#BDBDBD
+    style N1 fill:#F5F5F5,stroke:#BDBDBD
+    style N2 fill:#F1F8FF,stroke:#42A5F5
+    style N3 fill:#F1F8FF,stroke:#42A5F5
+    style N4 fill:#F1F8FF,stroke:#42A5F5
+    style N5 fill:#F5F5F5,stroke:#BDBDBD
+    style N6 fill:#F1F8FF,stroke:#42A5F5
+    style N7 fill:#F1F8FF,stroke:#42A5F5
+    style N8 fill:#F1F8FF,stroke:#42A5F5
+    style N9 fill:#F1F8FF,stroke:#42A5F5
+    style N10 fill:#F1F8FF,stroke:#42A5F5
+    style N11 fill:#F1F8FF,stroke:#42A5F5
+    style N12 fill:#E8EAF6,stroke:#7986CB
+    style N13 fill:#F1F8FF,stroke:#42A5F5
+    style N14 fill:#E8EAF6,stroke:#7986CB
+    style N15 fill:#F5F5F5,stroke:#BDBDBD
+    style S0 fill:#E8EAF6,stroke:#7986CB
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style M1 fill:#F5F5F5,stroke:#BDBDBD
+    style M2 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_1 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_2 fill:#E8EAF6,stroke:#7986CB
+    style nest1_0 fill:#E8EAF6,stroke:#7986CB
+    style nest1_1 fill:#F1F8FF,stroke:#42A5F5
+    style nest1_2 fill:#E8EAF6,stroke:#7986CB
+    style nest1_3 fill:#F5F5F5,stroke:#BDBDBD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#BDBDBD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_259.txt b/train/mermaid/hard/mermaid_259.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5d33ad8f896c6f52b33e236790de731230343c62
--- /dev/null
+++ b/train/mermaid/hard/mermaid_259.txt
@@ -0,0 +1,41 @@
+<Candidate Sourcing, connectedTo, Wellness Programs>
+<Compensation and Benefits, connectedTo, Global Mobility Programs>
+<Compensation and Benefits, partOf, Skill Development Programs>
+<Employee Data Management, connectedTo, end>
+<Employee Data Management, partOf, Work_Life Balance Initiatives>
+<Employee Engagement Surveys, counsels, Compensation and Benefits>
+<Employee Engagement Surveys, partOf, Skill Development Programs>
+<Employee Recognition Programs, connectedTo, Employee Training>
+<Employee Recognition Programs, connectedTo, HR Budgeting>
+<Employee Training, connectedTo, Job Posting>
+<Employee Training, partOf, Work_Life Balance Initiatives>
+<Exit Interviews, connectedTo, Payroll Processing>
+<Global Mobility Programs, connectedTo, Succession Planning>
+<Global Mobility Programs, partOf, Skill Development Programs>
+<HR Analytics, connectedTo, Candidate Sourcing>
+<HR Analytics, connectedTo, Wellness Programs>
+<HR Budgeting, connectedTo, Exit Interviews>
+<HR Information System Implementation, compensates, Health and Safety Management>
+<HR Information System Implementation, connectedTo, Employee Recognition Programs>
+<Health and Safety Management, connectedTo, Employee Engagement Surveys>
+<Health and Safety Management, partOf, Skill Development Programs>
+<Job Posting, connectedTo, Employee Data Management>
+<Job Posting, partOf, Work_Life Balance Initiatives>
+<Leadership Training, connectedTo, end>
+<Leave Management, connectedTo, Exit Interviews>
+<Leave Management, connectedTo, Onboarding Process>
+<Leave Management, connectedTo, Succession Planning>
+<Leave Management, connectedTo, Workforce Planning>
+<Onboarding Process, connectedTo, Team Building Activities>
+<Payroll Processing, connectedTo, Workforce Planning>
+<Succession Planning, connectedTo, HR Information System Implementation>
+<Team Building Activities, connectedTo, HR Information System Implementation>
+<Team Building Activities, connectedTo, Leadership Training>
+<Team Building Activities, connectedTo, Succession Planning>
+<Team Building Activities, protects, HR Budgeting>
+<Team Building Activities, resolves, Employee Recognition Programs>
+<Wellness Programs, connectedTo, Succession Planning>
+<Wellness Programs, processes, Leave Management>
+<Workforce Planning, connectedTo, Leadership Training>
+<start, connectedTo, HR Analytics>
+<start, connectedTo, Wellness Programs>
diff --git a/train/mermaid/hard/mermaid_261.txt b/train/mermaid/hard/mermaid_261.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ffed8b59ba2a9117eb1d519688174605a681b62a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_261.txt
@@ -0,0 +1,45 @@
+<Candidate Sourcing, connectedTo, Organizational Development>
+<Candidate Sourcing, yes, Succession Planning>
+<Compensation and Benefits, connectedTo, Recruitment Planning>
+<Compensation and Benefits, partOf, Wellness Programs>
+<Compliance Management, yes, Global Mobility Programs>
+<Conflict Resolution, yes, Candidate Sourcing>
+<Disciplinary Procedures, connectedTo, Compliance Management>
+<Disciplinary Procedures, connectedTo, Grievance Handling>
+<Disciplinary Procedures, connectedTo, Leadership Training>
+<Disciplinary Procedures, connectedTo, Offer Management>
+<Disciplinary Procedures, connectedTo, Skill Development Programs>
+<Disciplinary Procedures, connectedTo, Succession Planning>
+<Employee Data Management, connectedTo, Offer Management>
+<Employee Data Management, connectedTo, Skill Development Programs>
+<Employee Data Management, connectedTo, Succession Planning>
+<Employee Data Management, connectedTo, Team Building Activities>
+<Employee Engagement Surveys, connectedTo, HR Budgeting>
+<Employee Training, connectedTo, Payroll Processing>
+<Employee Training, partOf, Onboarding Process>
+<Global Mobility Programs, no, end>
+<Grievance Handling, connectedTo, Employee Data Management>
+<HR Budgeting, connectedTo, Compliance Management>
+<HR Budgeting, connectedTo, Conflict Resolution>
+<HR Budgeting, connectedTo, Global Mobility Programs>
+<HR Budgeting, connectedTo, Skill Development Programs>
+<HR Information System Implementation, connectedTo, Employee Training>
+<HR Information System Implementation, partOf, Onboarding Process>
+<Leadership Training, connectedTo, Union Negotiations>
+<Leadership Training, partOf, Onboarding Process>
+<Offer Management, connectedTo, Succession Planning>
+<Organizational Development, connectedTo, Disciplinary Procedures>
+<Payroll Processing, connectedTo, Skill Development Programs>
+<Payroll Processing, yes, Employee Engagement Surveys>
+<Performance Appraisal, connectedTo, Payroll Processing>
+<Recruitment Planning, connectedTo, Disciplinary Procedures>
+<Recruitment Planning, partOf, Wellness Programs>
+<Skill Development Programs, connectedTo, Compliance Management>
+<Succession Planning, connectedTo, Skill Development Programs>
+<Team Building Activities, connectedTo, Work_Life Balance Initiatives>
+<Team Building Activities, partOf, Wellness Programs>
+<Union Negotiations, connectedTo, HR Information System Implementation>
+<Union Negotiations, partOf, Onboarding Process>
+<Work_Life Balance Initiatives, connectedTo, Compensation and Benefits>
+<Work_Life Balance Initiatives, partOf, Wellness Programs>
+<start, connectedTo, Performance Appraisal>
diff --git a/train/mermaid/hard/mermaid_264.mmd b/train/mermaid/hard/mermaid_264.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c58454409d5f4c443cd9f4fbe3a74603e02230d4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_264.mmd
@@ -0,0 +1,104 @@
+graph RL
+    N0([start])
+    N1[(Employee Recognition Programs)]
+    N2[HR Budgeting]
+    N3[(HR Information System Implementation)]
+    N4[[Remote Work Policy]]
+    N5{Exit Interviews}
+    N6[(Talent Management)]
+    N7[[Employee Handbook Creation]]
+    N8[[HR Analytics]]
+    N9[Performance Appraisal]
+    N10[/Grievance Handling/]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Workforce Planning
+        nest0_0[Team Building Activities]
+        nest0_1(HR Policy Development)
+        nest0_2[Employee Training]
+    end
+    subgraph Work_Life Balance Initiatives
+        nest1_0[(Compliance Management)]
+        nest1_1([Change Management])
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    nest0_1 -.-> |yes| nest0_2
+    N7 -.-> nest0_0
+    nest0_2 --> |yes| N9
+    nest1_0 -.-> nest1_1
+    N2 --> nest1_0
+    nest1_1 -.-> N5
+    N2 --> S0
+    S0 -.-> N6
+    S0 -.-> N5
+    S0 --> N7
+    N6 --> S1
+    S1 --> N10
+    S1 -.-> N9
+    S1 --> N8
+    N4 --> S2
+    S2 --> N9
+    S2 -.-> N10
+    S2 -.-> N8
+    N3 --> M0
+    N5 -.-> |no| M0
+    N0 --> M0
+    M0 --> N10
+    N0 --> M1
+    N1 -.-> M1
+    M1 --> N5
+    style S0 fill:#FFF8E1,stroke:#FFD54F
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style S2 fill:#FAEBF3,stroke:#F7BEE0
+    style M0 fill:#BBDEFB,stroke:#2196F3
+    style M1 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFD54F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_265.txt b/train/mermaid/hard/mermaid_265.txt
new file mode 100644
index 0000000000000000000000000000000000000000..453d6d9c5622d91b18fe83227dc026669b479047
--- /dev/null
+++ b/train/mermaid/hard/mermaid_265.txt
@@ -0,0 +1,36 @@
+<AI in Recruitment, no, Candidate Tracking>
+<AI in Recruitment, partOf, Psychometric Testing>
+<Background Check, connectedTo, Freelancer Engagement>
+<Background Check, connectedTo, Headhunting>
+<Campus Recruitment, connectedTo, Headhunting>
+<Campus Recruitment, connectedTo, Reference Checking>
+<Candidate Assessment Design, connectedTo, Freelancer Engagement>
+<Candidate Assessment Design, partOf, Offer Extension>
+<Candidate Feedback Collection, connectedTo, Global Recruitment Strategy>
+<Candidate Feedback Collection, connectedTo, Negotiation>
+<Candidate Tracking, connectedTo, Social Recruiting>
+<Candidate Tracking, partOf, Psychometric Testing>
+<Freelancer Engagement, connectedTo, Job Fair Organization>
+<Global Recruitment Strategy, connectedTo, Campus Recruitment>
+<Headhunting, connectedTo, Job Description Creation>
+<Internal Mobility, connectedTo, Background Check>
+<Internal Mobility, connectedTo, Headhunting>
+<Internal Mobility, connectedTo, Interview Panel Coordination>
+<Interview Panel Coordination, connectedTo, Background Check>
+<Interview Panel Coordination, connectedTo, Headhunting>
+<Job Description Creation, yes, Passive Candidate Engagement>
+<Job Fair Organization, connectedTo, AI in Recruitment>
+<Job Fair Organization, yes, Candidate Feedback Collection>
+<Negotiation, connectedTo, Candidate Assessment Design>
+<Negotiation, partOf, Offer Extension>
+<Passive Candidate Engagement, connectedTo, Social Recruiting>
+<Recruiter Training, connectedTo, Recruitment Process Outsourcing Management>
+<Recruitment Process Outsourcing Management, yes, end>
+<Reference Checking, connectedTo, Passive Candidate Engagement>
+<Reference Checking, connectedTo, Social Recruiting>
+<Reference Checking, connectedTo, end>
+<Reference Checking, no, Recruitment Process Outsourcing Management>
+<Reference Checking, yes, Headhunting>
+<Social Recruiting, no, Recruiter Training>
+<start, connectedTo, Background Check>
+<start, connectedTo, Internal Mobility>
diff --git a/train/mermaid/hard/mermaid_266.mmd b/train/mermaid/hard/mermaid_266.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a9803663b178118254becf6575b2730ca0af7798
--- /dev/null
+++ b/train/mermaid/hard/mermaid_266.mmd
@@ -0,0 +1,142 @@
+graph TD
+    N0([start])
+    N1[Applicant Tracking System Management]
+    N2(Global Recruitment Strategy)
+    N3[[Offer Extension]]
+    N4(Negotiation)
+    N5[/Talent Pipeline Building/]
+    N6[/Recruitment Metrics Reporting/]
+    N7{Video Interviewing}
+    N8{Employee Referral Program}
+    N9(AI in Recruitment)
+    N10[(Recruitment Process Outsourcing Management)]
+    N11[Candidate Relationship Management]
+    N12(Candidate Screening)
+    N13[[Passive Candidate Engagement]]
+    N14{Candidate Assessment Design}
+    N15([Employer Branding])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Temporary Staffing
+        nest0_0[[Psychometric Testing]]
+        nest0_1{Onboarding Handoff}
+        nest0_2(Social Recruiting)
+        nest0_3[Recruitment Analytics]
+    end
+    subgraph Job Fair Organization
+        nest1_0[/Internal Mobility/]
+        nest1_1[(Recruitment Marketing)]
+        nest1_2(Competency_Based Interviewing)
+        nest1_3(Reference Checking)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> |trains| N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> |complies| N15
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N2 --> nest0_0
+    nest0_3 --> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N1 -.-> |analyzes| nest1_0
+    nest1_3 -.-> N3
+    N12 -.-> S0
+    S0 --> N14
+    S0 -.-> N15
+    N8 -.-> S1
+    S1 --> N13
+    S1 --> |reports| N15
+    S1 --> N12
+    S1 -.-> |communicates| N10
+    N5 -.-> S2
+    S2 --> N7
+    S2 -.-> N13
+    N2 -.-> |brands| M1
+    N5 --> M1
+    N4 -.-> M1
+    M1 -.-> N8
+    style N0 fill:#FFFAE0,stroke:#FFE470
+    style N1 fill:#E3F2FD,stroke:#64B5F6
+    style N2 fill:#FFFAE0,stroke:#FFE470
+    style N3 fill:#EDE7F6,stroke:#9575CD
+    style N4 fill:#E3F2FD,stroke:#64B5F6
+    style N5 fill:#FFFAE0,stroke:#FFE470
+    style N6 fill:#E3F2FD,stroke:#64B5F6
+    style N7 fill:#E3F2FD,stroke:#64B5F6
+    style N8 fill:#E3F2FD,stroke:#64B5F6
+    style N9 fill:#E3F2FD,stroke:#64B5F6
+    style N10 fill:#FFFAE0,stroke:#FFE470
+    style N11 fill:#EDE7F6,stroke:#9575CD
+    style N12 fill:#EDE7F6,stroke:#9575CD
+    style N13 fill:#E3F2FD,stroke:#64B5F6
+    style N14 fill:#EDE7F6,stroke:#9575CD
+    style N15 fill:#FFFAE0,stroke:#FFE470
+    style S0 fill:#E3F2FD,stroke:#64B5F6
+    style S1 fill:#EDE7F6,stroke:#9575CD
+    style S2 fill:#E3F2FD,stroke:#64B5F6
+    style M1 fill:#EDE7F6,stroke:#9575CD
+    style nest0_0 fill:#EDE7F6,stroke:#9575CD
+    style nest0_1 fill:#FFFAE0,stroke:#FFE470
+    style nest0_2 fill:#EDE7F6,stroke:#9575CD
+    style nest0_3 fill:#FFFAE0,stroke:#FFE470
+    style nest1_0 fill:#FFFAE0,stroke:#FFE470
+    style nest1_1 fill:#EDE7F6,stroke:#9575CD
+    style nest1_2 fill:#EDE7F6,stroke:#9575CD
+    style nest1_3 fill:#FFFAE0,stroke:#FFE470
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#9575CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_266.txt b/train/mermaid/hard/mermaid_266.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2d812b005983a9886e3fc93457ef13f542df189a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_266.txt
@@ -0,0 +1,44 @@
+<AI in Recruitment, trains, Recruitment Process Outsourcing Management>
+<Applicant Tracking System Management, analyzes, Internal Mobility>
+<Applicant Tracking System Management, connectedTo, Global Recruitment Strategy>
+<Candidate Assessment Design, complies, Employer Branding>
+<Candidate Relationship Management, connectedTo, Candidate Screening>
+<Candidate Screening, connectedTo, Candidate Assessment Design>
+<Candidate Screening, connectedTo, Employer Branding>
+<Candidate Screening, connectedTo, Passive Candidate Engagement>
+<Competency_Based Interviewing, connectedTo, Reference Checking>
+<Competency_Based Interviewing, partOf, Job Fair Organization>
+<Employee Referral Program, communicates, Recruitment Process Outsourcing Management>
+<Employee Referral Program, connectedTo, AI in Recruitment>
+<Employee Referral Program, connectedTo, Candidate Screening>
+<Employee Referral Program, connectedTo, Passive Candidate Engagement>
+<Employee Referral Program, reports, Employer Branding>
+<Global Recruitment Strategy, brands, Employee Referral Program>
+<Global Recruitment Strategy, connectedTo, Offer Extension>
+<Global Recruitment Strategy, connectedTo, Psychometric Testing>
+<Internal Mobility, connectedTo, Recruitment Marketing>
+<Internal Mobility, partOf, Job Fair Organization>
+<Negotiation, connectedTo, Employee Referral Program>
+<Negotiation, connectedTo, Talent Pipeline Building>
+<Offer Extension, connectedTo, Negotiation>
+<Onboarding Handoff, connectedTo, Social Recruiting>
+<Onboarding Handoff, partOf, Temporary Staffing>
+<Passive Candidate Engagement, connectedTo, Candidate Assessment Design>
+<Psychometric Testing, connectedTo, Onboarding Handoff>
+<Psychometric Testing, partOf, Temporary Staffing>
+<Recruitment Analytics, connectedTo, Candidate Assessment Design>
+<Recruitment Analytics, partOf, Temporary Staffing>
+<Recruitment Marketing, connectedTo, Competency_Based Interviewing>
+<Recruitment Marketing, partOf, Job Fair Organization>
+<Recruitment Metrics Reporting, connectedTo, Video Interviewing>
+<Recruitment Process Outsourcing Management, connectedTo, Candidate Relationship Management>
+<Reference Checking, connectedTo, Offer Extension>
+<Reference Checking, partOf, Job Fair Organization>
+<Social Recruiting, connectedTo, Recruitment Analytics>
+<Social Recruiting, partOf, Temporary Staffing>
+<Talent Pipeline Building, connectedTo, Employee Referral Program>
+<Talent Pipeline Building, connectedTo, Passive Candidate Engagement>
+<Talent Pipeline Building, connectedTo, Recruitment Metrics Reporting>
+<Talent Pipeline Building, connectedTo, Video Interviewing>
+<Video Interviewing, connectedTo, Employee Referral Program>
+<start, connectedTo, Applicant Tracking System Management>
diff --git a/train/mermaid/hard/mermaid_267.mmd b/train/mermaid/hard/mermaid_267.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..07f2db753870be7787a6225f50e491ee1727a155
--- /dev/null
+++ b/train/mermaid/hard/mermaid_267.mmd
@@ -0,0 +1,136 @@
+graph TD
+    N0([Candidate Relationship Management])
+    N1[(AI in Recruitment)]
+    N2[/Candidate Feedback Collection/]
+    N3(Negotiation)
+    N4[Recruiter Training]
+    N5[[Recruitment Analytics]]
+    N6[Applicant Tracking System Management]
+    N7[(Talent Pipeline Building)]
+    N8[[Contingent Workforce Management]]
+    N9{Interview Conducting}
+    N10[/Candidate Assessment Design/]
+    N11([Employee Referral Program])
+    N12[[Executive Search]]
+    N13[/Reference Checking/]
+    N14[Campus Recruitment]
+    N15([Recruitment Marketing])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Onboarding Handoff
+        nest0_0{Compliance in Hiring}
+        nest0_1[Competency_Based Interviewing]
+        nest0_2[[Interview Panel Coordination]]
+    end
+    subgraph Passive Candidate Engagement
+        nest1_0(Social Recruiting)
+        nest1_1[Freelancer Engagement]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> |networks| N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |tests| N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> |consults| N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N9 -.-> nest0_0
+    nest0_2 -.-> N4
+    nest1_0 -.-> nest1_1
+    N11 --> nest1_0
+    nest1_1 --> N8
+    N5 -.-> S0
+    S0 --> N8
+    S0 -.-> N9
+    S0 --> N13
+    N12 --> S1
+    S1 -.-> N15
+    S1 -.-> N14
+    N0 --> S2
+    S2 --> N13
+    S2 --> N4
+    S2 --> N2
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N3
+    N0 -.-> M1
+    N1 --> M1
+    M1 -.-> N3
+    style N0 fill:#ECF0FD,stroke:#B8C0F5
+    style N1 fill:#FFF3E0,stroke:#FFB74D
+    style N2 fill:#F9FBE7,stroke:#C0CA33
+    style N3 fill:#ECF0FD,stroke:#B8C0F5
+    style N4 fill:#F9FBE7,stroke:#C0CA33
+    style N5 fill:#F9FBE7,stroke:#C0CA33
+    style N6 fill:#FFF3E0,stroke:#FFB74D
+    style N7 fill:#F9FBE7,stroke:#C0CA33
+    style N8 fill:#ECF0FD,stroke:#B8C0F5
+    style N9 fill:#FFF3E0,stroke:#FFB74D
+    style N10 fill:#F9FBE7,stroke:#C0CA33
+    style N11 fill:#ECF0FD,stroke:#B8C0F5
+    style N12 fill:#ECF0FD,stroke:#B8C0F5
+    style N13 fill:#FFF3E0,stroke:#FFB74D
+    style N14 fill:#F9FBE7,stroke:#C0CA33
+    style N15 fill:#ECF0FD,stroke:#B8C0F5
+    style S0 fill:#F9FBE7,stroke:#C0CA33
+    style S1 fill:#F9FBE7,stroke:#C0CA33
+    style S2 fill:#ECF0FD,stroke:#B8C0F5
+    style M0 fill:#ECF0FD,stroke:#B8C0F5
+    style M1 fill:#ECF0FD,stroke:#B8C0F5
+    style nest0_0 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_1 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_2 fill:#ECF0FD,stroke:#B8C0F5
+    style nest1_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest1_1 fill:#F9FBE7,stroke:#C0CA33
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_270.txt b/train/mermaid/hard/mermaid_270.txt
new file mode 100644
index 0000000000000000000000000000000000000000..eff3fe3f6ecde6f60b97f02775b5e159b3b79c30
--- /dev/null
+++ b/train/mermaid/hard/mermaid_270.txt
@@ -0,0 +1,40 @@
+<AI in Recruitment, connectedTo, Freelancer Engagement>
+<AI in Recruitment, connectedTo, Global Recruitment Strategy>
+<Applicant Tracking System Management, connectedTo, Negotiation>
+<Background Check, connectedTo, Passive Candidate Engagement>
+<Background Check, partOf, Candidate Tracking>
+<Candidate Feedback Collection, connectedTo, Candidate Relationship Management>
+<Candidate Feedback Collection, connectedTo, Headhunting>
+<Candidate Relationship Management, connectedTo, Freelancer Engagement>
+<Candidate Relationship Management, connectedTo, Headhunting>
+<Candidate Relationship Management, connectedTo, end>
+<Contingent Workforce Management, connectedTo, Employer Branding>
+<Diversity Sourcing, connectedTo, end>
+<Employer Branding, connectedTo, Talent Pipeline Building>
+<Freelancer Engagement, connectedTo, Recruiter Training>
+<Freelancer Engagement, yes, Social Recruiting>
+<Global Recruitment Strategy, connectedTo, Temporary Staffing>
+<Global Recruitment Strategy, partOf, Compliance in Hiring>
+<Headhunting, connectedTo, Onboarding Handoff>
+<Interview Panel Coordination, partOf, Compliance in Hiring>
+<Interview Panel Coordination, yes, end>
+<Negotiation, connectedTo, Contingent Workforce Management>
+<Negotiation, connectedTo, Diversity Sourcing>
+<Negotiation, connectedTo, Employer Branding>
+<Negotiation, connectedTo, Talent Pipeline Building>
+<Negotiation, connectedTo, end>
+<Onboarding Handoff, connectedTo, AI in Recruitment>
+<Passive Candidate Engagement, connectedTo, Social Recruiting>
+<Passive Candidate Engagement, partOf, Candidate Tracking>
+<Recruiter Training, connectedTo, Video Interviewing>
+<Recruiter Training, partOf, Candidate Tracking>
+<Recruitment Marketing, connectedTo, Recruitment Process Outsourcing Management>
+<Recruitment Process Outsourcing Management, no, Applicant Tracking System Management>
+<Social Recruiting, yes, Recruitment Marketing>
+<Talent Pipeline Building, connectedTo, Diversity Sourcing>
+<Temporary Staffing, connectedTo, Interview Panel Coordination>
+<Temporary Staffing, partOf, Compliance in Hiring>
+<Video Interviewing, connectedTo, Background Check>
+<Video Interviewing, partOf, Candidate Tracking>
+<start, connectedTo, Candidate Feedback Collection>
+<start, connectedTo, Headhunting>
diff --git a/train/mermaid/hard/mermaid_271.mmd b/train/mermaid/hard/mermaid_271.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..18b76fe40c64315d3d79385f6647ba6b724fafe5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_271.mmd
@@ -0,0 +1,100 @@
+graph RL
+    N0([Recruitment Marketing])
+    N1[Compliance in Hiring]
+    N2[Recruitment Process Outsourcing Management]
+    N3[/Freelancer Engagement/]
+    N4[/Diversity Sourcing/]
+    N5[/Global Recruitment Strategy/]
+    N6[(Candidate Relationship Management)]
+    N7(Candidate Tracking)
+    N8[[Job Description Creation]]
+    N9(Candidate Experience Management)
+    N10([AI in Recruitment])
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Passive Candidate Engagement
+        nest0_0[[Headhunting]]
+        nest0_1([Candidate Screening])
+        nest0_2[[Talent Pipeline Building]]
+    end
+    subgraph Recruitment Analytics
+        nest1_0{Psychometric Testing}
+        nest1_1[Contingent Workforce Management]
+    end
+    N0 --> |develops| N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> |sources| N6
+    N6 --> |communicates| N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N9 --> nest0_0
+    nest0_2 -.-> N6
+    nest1_0 -.-> nest1_1
+    N9 --> nest1_0
+    nest1_1 -.-> N6
+    N7 --> S1
+    S1 --> N9
+    S1 --> N10
+    N0 --> M0
+    N2 --> |advertises| M0
+    M0 -.-> N5
+    N1 --> M1
+    N5 -.-> M1
+    N0 -.-> M1
+    N4 -.-> M1
+    M1 --> N8
+    style N0 fill:#B3E5FC,stroke:#03A9F4
+    style N1 fill:#B3E5FC,stroke:#03A9F4
+    style N2 fill:#B3E5FC,stroke:#03A9F4
+    style N3 fill:#FFEBEE,stroke:#E57373
+    style N4 fill:#FFEBEE,stroke:#E57373
+    style N5 fill:#FFEBEE,stroke:#E57373
+    style N6 fill:#FFEBEE,stroke:#E57373
+    style N7 fill:#B3E5FC,stroke:#03A9F4
+    style N8 fill:#E9F7E8,stroke:#6EB76D
+    style N9 fill:#E9F7E8,stroke:#6EB76D
+    style N10 fill:#E9F7E8,stroke:#6EB76D
+    style S1 fill:#B3E5FC,stroke:#03A9F4
+    style M0 fill:#FFEBEE,stroke:#E57373
+    style M1 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_0 fill:#FFEBEE,stroke:#E57373
+    style nest0_1 fill:#FFEBEE,stroke:#E57373
+    style nest0_2 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_1 fill:#FFEBEE,stroke:#E57373
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#03A9F4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_272.mmd b/train/mermaid/hard/mermaid_272.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..48a1de87b09a78dad0f6101d5a8e922a07d8e995
--- /dev/null
+++ b/train/mermaid/hard/mermaid_272.mmd
@@ -0,0 +1,152 @@
+graph BT
+    N0([Headhunting])
+    N1[(Internal Mobility)]
+    N2(Candidate Assessment Design)
+    N3[(Job Description Creation)]
+    N4(Diversity Sourcing)
+    N5[Compliance in Hiring]
+    N6[Interview Panel Coordination]
+    N7[/Employer Branding/]
+    N8[Employee Referral Program]
+    N9[Competency_Based Interviewing]
+    N10([Recruitment Marketing])
+    N11{Background Check}
+    N12[/Social Recruiting/]
+    N13([Candidate Tracking])
+    N14[Negotiation]
+    N15[/Executive Search/]
+    N16([Temporary Staffing])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Campus Recruitment
+        nest0_0[(Recruitment Analytics)]
+        nest0_1([Passive Candidate Engagement])
+        nest0_2[(Contingent Workforce Management)]
+    end
+    subgraph Freelancer Engagement
+        nest1_0[(Interview Conducting)]
+        nest1_1[Recruiter Training]
+        nest1_2(Recruitment Metrics Reporting)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> |builds| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> |selects| N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N10 --> nest0_0
+    nest0_2 --> N5
+    nest1_0 --> |brands| nest1_1
+    nest1_1 -.-> |screens| nest1_2
+    N13 -.-> nest1_0
+    nest1_2 --> |advertises| N4
+    N2 -.-> S0
+    S0 -.-> N13
+    S0 --> N10
+    N3 --> S1
+    S1 -.-> N5
+    S1 -.-> N10
+    N1 --> S2
+    S2 -.-> N15
+    S2 -.-> N3
+    S2 -.-> N12
+    N2 --> M0
+    N0 -.-> M0
+    N3 -.-> |backgrounds| M0
+    M0 -.-> N7
+    N0 --> M1
+    N10 -.-> M1
+    M1 --> N12
+    N4 --> M2
+    N6 -.-> M2
+    M2 --> N11
+    style N0 fill:#B3E5FC,stroke:#03A9F4
+    style N1 fill:#FCE4EC,stroke:#E91E63
+    style N2 fill:#B3E5FC,stroke:#03A9F4
+    style N3 fill:#FCE4EC,stroke:#E91E63
+    style N4 fill:#FCE4EC,stroke:#E91E63
+    style N5 fill:#D3F7F9,stroke:#80DDEA
+    style N6 fill:#D3F7F9,stroke:#80DDEA
+    style N7 fill:#B3E5FC,stroke:#03A9F4
+    style N8 fill:#FCE4EC,stroke:#E91E63
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#B3E5FC,stroke:#03A9F4
+    style N11 fill:#FCE4EC,stroke:#E91E63
+    style N12 fill:#D3F7F9,stroke:#80DDEA
+    style N13 fill:#FCE4EC,stroke:#E91E63
+    style N14 fill:#FCE4EC,stroke:#E91E63
+    style N15 fill:#B3E5FC,stroke:#03A9F4
+    style N16 fill:#FCE4EC,stroke:#E91E63
+    style S0 fill:#B3E5FC,stroke:#03A9F4
+    style S1 fill:#B3E5FC,stroke:#03A9F4
+    style S2 fill:#B3E5FC,stroke:#03A9F4
+    style M0 fill:#B3E5FC,stroke:#03A9F4
+    style M1 fill:#B3E5FC,stroke:#03A9F4
+    style M2 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_2 fill:#FCE4EC,stroke:#E91E63
+    style nest1_0 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_2 fill:#FCE4EC,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#E91E63,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_272.txt b/train/mermaid/hard/mermaid_272.txt
new file mode 100644
index 0000000000000000000000000000000000000000..60a226ac5b36f6aedfd43a5c53a8f8fba597fa80
--- /dev/null
+++ b/train/mermaid/hard/mermaid_272.txt
@@ -0,0 +1,44 @@
+<Background Check, connectedTo, Social Recruiting>
+<Candidate Assessment Design, builds, Job Description Creation>
+<Candidate Assessment Design, connectedTo, Candidate Tracking>
+<Candidate Assessment Design, connectedTo, Employer Branding>
+<Candidate Assessment Design, connectedTo, Recruitment Marketing>
+<Candidate Tracking, connectedTo, Interview Conducting>
+<Candidate Tracking, connectedTo, Negotiation>
+<Competency_Based Interviewing, connectedTo, Recruitment Marketing>
+<Compliance in Hiring, connectedTo, Interview Panel Coordination>
+<Contingent Workforce Management, connectedTo, Compliance in Hiring>
+<Contingent Workforce Management, partOf, Campus Recruitment>
+<Diversity Sourcing, connectedTo, Background Check>
+<Diversity Sourcing, connectedTo, Compliance in Hiring>
+<Employee Referral Program, selects, Competency_Based Interviewing>
+<Employer Branding, connectedTo, Employee Referral Program>
+<Executive Search, connectedTo, Temporary Staffing>
+<Headhunting, connectedTo, Employer Branding>
+<Headhunting, connectedTo, Internal Mobility>
+<Headhunting, connectedTo, Social Recruiting>
+<Internal Mobility, connectedTo, Candidate Assessment Design>
+<Internal Mobility, connectedTo, Executive Search>
+<Internal Mobility, connectedTo, Job Description Creation>
+<Internal Mobility, connectedTo, Social Recruiting>
+<Interview Conducting, brands, Recruiter Training>
+<Interview Conducting, partOf, Freelancer Engagement>
+<Interview Panel Coordination, connectedTo, Background Check>
+<Interview Panel Coordination, connectedTo, Employer Branding>
+<Job Description Creation, backgrounds, Employer Branding>
+<Job Description Creation, connectedTo, Compliance in Hiring>
+<Job Description Creation, connectedTo, Diversity Sourcing>
+<Job Description Creation, connectedTo, Recruitment Marketing>
+<Negotiation, connectedTo, Executive Search>
+<Passive Candidate Engagement, connectedTo, Contingent Workforce Management>
+<Passive Candidate Engagement, partOf, Campus Recruitment>
+<Recruiter Training, partOf, Freelancer Engagement>
+<Recruiter Training, screens, Recruitment Metrics Reporting>
+<Recruitment Analytics, connectedTo, Passive Candidate Engagement>
+<Recruitment Analytics, partOf, Campus Recruitment>
+<Recruitment Marketing, connectedTo, Background Check>
+<Recruitment Marketing, connectedTo, Recruitment Analytics>
+<Recruitment Marketing, connectedTo, Social Recruiting>
+<Recruitment Metrics Reporting, advertises, Diversity Sourcing>
+<Recruitment Metrics Reporting, partOf, Freelancer Engagement>
+<Social Recruiting, connectedTo, Candidate Tracking>
diff --git a/train/mermaid/hard/mermaid_273.mmd b/train/mermaid/hard/mermaid_273.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4505174114c54da2213b990b9d9b165cab894a21
--- /dev/null
+++ b/train/mermaid/hard/mermaid_273.mmd
@@ -0,0 +1,92 @@
+graph BT
+    N0([start])
+    N1[(Issue Escalation)]
+    N2[/Social Media Response/]
+    N3{Customer Loyalty Program Support}
+    N4(Email Support)
+    N5[Knowledge Base Creation]
+    N6[[Complaint Resolution]]
+    S0(( ))
+    S2(( ))
+    subgraph Up_selling Opportunities
+        nest0_0([First Contact Resolution Optimization])
+        nest0_1[[Personalized Assistance]]
+        nest0_2[Feedback Collection]
+        nest0_3[Self_Service Portal Management]
+    end
+    subgraph FAQ Management
+        nest1_0[(Technical Support)]
+        nest1_1([Call Center Management])
+        nest1_2(Virtual Assistant Interaction)
+        nest1_3[/Account Management/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> |emails| nest0_3
+    N3 -.-> nest0_0
+    nest0_3 -.-> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N4 -.-> |analyzes| nest1_0
+    nest1_3 -.-> |socials| N4
+    N0 --> S0
+    S0 --> N5
+    S0 --> |resolves| N6
+    N1 -.-> S2
+    S2 -.-> N3
+    S2 --> N5
+    S2 -.-> |monitors| N6
+    nest1_2 --> N5
+    N0 --> N5
+    nest0_2 --> N3
+    style N0 fill:#E6EE9C,stroke:#CDDC39
+    style N1 fill:#E6EE9C,stroke:#CDDC39
+    style N2 fill:#D6D9F0,stroke:#9FA9E1
+    style N3 fill:#ECF0FD,stroke:#B8C0F5
+    style N4 fill:#E6EE9C,stroke:#CDDC39
+    style N5 fill:#E6EE9C,stroke:#CDDC39
+    style N6 fill:#E6EE9C,stroke:#CDDC39
+    style S0 fill:#D6D9F0,stroke:#9FA9E1
+    style S2 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_0 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_1 fill:#ECF0FD,stroke:#B8C0F5
+    style nest0_2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_3 fill:#ECF0FD,stroke:#B8C0F5
+    style nest1_0 fill:#ECF0FD,stroke:#B8C0F5
+    style nest1_1 fill:#D6D9F0,stroke:#9FA9E1
+    style nest1_2 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_3 fill:#E6EE9C,stroke:#CDDC39
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B8C0F5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_276.mmd b/train/mermaid/hard/mermaid_276.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6b2692b4d7cdedd8029081928cb79bce82cd5e32
--- /dev/null
+++ b/train/mermaid/hard/mermaid_276.mmd
@@ -0,0 +1,127 @@
+graph BT
+    N0([start])
+    N1(Customer Loyalty Program Support)
+    N2(Customer Onboarding Support)
+    N3[[Inquiry Handling]]
+    N4[Customer Journey Mapping]
+    N5[Live Chat Support]
+    N6[(Multilingual Support)]
+    N7[[Customer Satisfaction Survey]]
+    N8{Personalized Assistance}
+    N9[/Virtual Assistant Interaction/]
+    N10{Feedback Collection}
+    N11([Proactive Communication])
+    N12[/FAQ Management/]
+    N13{Customer Retention Strategies}
+    N14[Sentiment Analysis]
+    N15(Service Level Agreement Monitoring)
+    N16([Customer Success Management])
+    N17[Email Support]
+    N18([end])
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Call Center Management
+        nest0_0([Refund Processing])
+        nest0_1(Customer Relationship Management System Use)
+        nest0_2[Knowledge Base Creation]
+    end
+    subgraph First Contact Resolution Optimization
+        nest1_0(Complaint Trend Analysis)
+        nest1_1[Account Management]
+        nest1_2[Issue Escalation]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 --> N17
+    N17 -.-> N18
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N9 -.-> nest0_0
+    nest0_2 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N11 -.-> nest1_0
+    nest1_2 -.-> N6
+    N1 -.-> S0
+    S0 -.-> N8
+    S0 --> N13
+    S0 --> N17
+    S0 --> |yes| N4
+    N13 --> S2
+    S2 -.-> |no| N17
+    S2 -.-> N16
+    S2 -.-> N18
+    S2 --> |yes| N15
+    N4 -.-> M0
+    N3 -.-> M0
+    N6 -.-> M0
+    M0 --> N11
+    N11 -.-> M1
+    N7 --> M1
+    N4 -.-> M1
+    M1 -.-> N15
+    style S0 fill:#FFEBEB,stroke:#FFC2C2
+    style S2 fill:#E0F7FA,stroke:#00BCD4
+    style M0 fill:#E0F7FA,stroke:#00BCD4
+    style M1 fill:#FFEBEB,stroke:#FFC2C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#FFC2C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_277.txt b/train/mermaid/hard/mermaid_277.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e0423d416fce16c4738d832e2fe498cd93c261a0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_277.txt
@@ -0,0 +1,36 @@
+<Accessibility Support, connectedTo, Account Management>
+<Account Management, connectedTo, Email Support>
+<Call Center Management, connectedTo, Complaint Trend Analysis>
+<Complaint Resolution, connectedTo, Refund Processing>
+<Complaint Trend Analysis, connectedTo, Customer Relationship Management System Use>
+<Complaint Trend Analysis, connectedTo, Sentiment Analysis>
+<Customer Loyalty Program Support, connectedTo, Feedback Collection>
+<Customer Relationship Management System Use, connectedTo, Customer Retention Strategies>
+<Customer Retention Strategies, connectedTo, Complaint Resolution>
+<Email Support, connectedTo, Knowledge Base Creation>
+<Email Support, connectedTo, Multilingual Support>
+<Email Support, connectedTo, end>
+<Feedback Collection, connectedTo, Issue Escalation>
+<Feedback Collection, connectedTo, Product Information Provision>
+<Feedback Collection, monitors, Accessibility Support>
+<Feedback Loop to Product Development, connectedTo, Customer Loyalty Program Support>
+<Issue Escalation, connectedTo, Service Blueprinting>
+<Issue Escalation, partOf, Social Media Response>
+<Knowledge Base Creation, connectedTo, Multilingual Support>
+<Multilingual Support, connectedTo, end>
+<Post_Service Follow_up, connectedTo, Accessibility Support>
+<Post_Service Follow_up, connectedTo, Call Center Management>
+<Product Information Provision, connectedTo, Accessibility Support>
+<Product Information Provision, tracks, Service Recovery>
+<Refund Processing, connectedTo, Feedback Loop to Product Development>
+<Sentiment Analysis, partOf, Customer Success Management>
+<Sentiment Analysis, responds, Up_selling Opportunities>
+<Service Blueprinting, connectedTo, Virtual Assistant Interaction>
+<Service Blueprinting, partOf, Social Media Response>
+<Service Recovery, connectedTo, Accessibility Support>
+<Service Recovery, connectedTo, Account Management>
+<Service Recovery, connectedTo, Multilingual Support>
+<Up_selling Opportunities, connectedTo, Complaint Resolution>
+<Up_selling Opportunities, partOf, Customer Success Management>
+<Virtual Assistant Interaction, connectedTo, Product Information Provision>
+<Virtual Assistant Interaction, partOf, Social Media Response>
diff --git a/train/mermaid/hard/mermaid_278.mmd b/train/mermaid/hard/mermaid_278.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..435c93a0d76c1b04dac696a8149b406b7be45c18
--- /dev/null
+++ b/train/mermaid/hard/mermaid_278.mmd
@@ -0,0 +1,112 @@
+graph TD
+    N0([Customer Retention Strategies])
+    N1{Virtual Assistant Interaction}
+    N2[(Refund Processing)]
+    N3(Personalized Assistance)
+    N4[/Post_Service Follow_up/]
+    N5(Accessibility Support)
+    N6[Call Center Management]
+    N7{Product Information Provision}
+    N8[Sentiment Analysis]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Account Management
+        nest0_0(Customer Success Management)
+        nest0_1[/Multilingual Support/]
+    end
+    subgraph Cross_selling Opportunities
+        nest1_0[[FAQ Management]]
+        nest1_1([Up_selling Opportunities])
+        nest1_2[/Complaint Trend Analysis/]
+        nest1_3[[Live Chat Support]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> |optimizes| N8
+    nest0_0 -.-> |tracks| nest0_1
+    N6 --> nest0_0
+    nest0_1 -.-> N1
+    nest1_0 --> nest1_1
+    nest1_1 --> |resolves| nest1_2
+    nest1_2 -.-> nest1_3
+    N3 -.-> nest1_0
+    nest1_3 --> N2
+    N3 -.-> S0
+    S0 -.-> N6
+    S0 -.-> N8
+    N2 -.-> S1
+    S1 --> N8
+    S1 -.-> N4
+    S1 --> N7
+    N1 --> S2
+    S2 -.-> |emails| N5
+    S2 --> N4
+    N0 -.-> M1
+    N1 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N4
+    N2 --> |troubleshoots| M2
+    N3 --> M2
+    M2 -.-> N6
+    style N0 fill:#DED7F0,stroke:#A188DB
+    style N1 fill:#FCE4EC,stroke:#E91E63
+    style N2 fill:#B2EBF2,stroke:#00BCD4
+    style N3 fill:#FCE4EC,stroke:#E91E63
+    style N4 fill:#DED7F0,stroke:#A188DB
+    style N5 fill:#FCE4EC,stroke:#E91E63
+    style N6 fill:#FCE4EC,stroke:#E91E63
+    style N7 fill:#DED7F0,stroke:#A188DB
+    style N8 fill:#DED7F0,stroke:#A188DB
+    style S0 fill:#FCE4EC,stroke:#E91E63
+    style S1 fill:#B2EBF2,stroke:#00BCD4
+    style S2 fill:#DED7F0,stroke:#A188DB
+    style M1 fill:#B2EBF2,stroke:#00BCD4
+    style M2 fill:#FCE4EC,stroke:#E91E63
+    style nest0_0 fill:#DED7F0,stroke:#A188DB
+    style nest0_1 fill:#DED7F0,stroke:#A188DB
+    style nest1_0 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_1 fill:#DED7F0,stroke:#A188DB
+    style nest1_2 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_3 fill:#DED7F0,stroke:#A188DB
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_279.txt b/train/mermaid/hard/mermaid_279.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1a6e31b058598ec8d2e4db24187f8a69b78dd0e2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_279.txt
@@ -0,0 +1,39 @@
+<Complaint Trend Analysis, connectedTo, Personalized Assistance>
+<Customer Journey Mapping, connectedTo, Refund Processing>
+<Customer Journey Mapping, partOf, Customer Retention Strategies>
+<Customer Loyalty Program Support, connectedTo, Customer Satisfaction Survey>
+<Customer Satisfaction Survey, connectedTo, Service Blueprinting>
+<Customer Satisfaction Survey, connectedTo, Up_selling Opportunities>
+<Customer Success Management, connectedTo, First Contact Resolution Optimization>
+<Customer Success Management, partOf, Customer Retention Strategies>
+<Email Support, connectedTo, Issue Escalation>
+<Email Support, partOf, Accessibility Support>
+<FAQ Management, connectedTo, Customer Satisfaction Survey>
+<FAQ Management, connectedTo, Multilingual Support>
+<FAQ Management, connectedTo, Up_selling Opportunities>
+<Feedback Loop to Product Development, connectedTo, FAQ Management>
+<First Contact Resolution Optimization, connectedTo, Customer Journey Mapping>
+<First Contact Resolution Optimization, partOf, Customer Retention Strategies>
+<Issue Escalation, connectedTo, Social Media Response>
+<Issue Escalation, partOf, Accessibility Support>
+<Multilingual Support, connectedTo, Proactive Communication>
+<Multilingual Support, connectedTo, Service Blueprinting>
+<Multilingual Support, connectedTo, Virtual Assistant Interaction>
+<Phone Support, connectedTo, Refund Processing>
+<Proactive Communication, connectedTo, Complaint Trend Analysis>
+<Refund Processing, connectedTo, Customer Satisfaction Survey>
+<Refund Processing, connectedTo, Service Level Agreement Monitoring>
+<Service Blueprinting, connectedTo, Up_selling Opportunities>
+<Service Level Agreement Monitoring, connectedTo, Email Support>
+<Service Level Agreement Monitoring, connectedTo, Feedback Loop to Product Development>
+<Service Level Agreement Monitoring, connectedTo, Personalized Assistance>
+<Service Level Agreement Monitoring, connectedTo, Up_selling Opportunities>
+<Social Media Response, connectedTo, Up_selling Opportunities>
+<Social Media Response, partOf, Accessibility Support>
+<Up_selling Opportunities, connectedTo, Customer Success Management>
+<Up_selling Opportunities, connectedTo, Proactive Communication>
+<Virtual Assistant Interaction, connectedTo, Customer Loyalty Program Support>
+<Virtual Assistant Interaction, connectedTo, Customer Satisfaction Survey>
+<Virtual Assistant Interaction, connectedTo, Personalized Assistance>
+<start, connectedTo, Phone Support>
+<start, connectedTo, Up_selling Opportunities>
diff --git a/train/mermaid/hard/mermaid_280.txt b/train/mermaid/hard/mermaid_280.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3d48cffc2814a90e3cf8eddfaca81235ef463283
--- /dev/null
+++ b/train/mermaid/hard/mermaid_280.txt
@@ -0,0 +1,43 @@
+<Accessibility Support, connectedTo, Complaint Resolution>
+<Accessibility Support, connectedTo, Issue Escalation>
+<Accessibility Support, connectedTo, Product Information Provision>
+<Accessibility Support, connectedTo, Self_Service Portal Management>
+<Accessibility Support, no, Social Media Response>
+<Account Management, connectedTo, Product Information Provision>
+<Call Center Management, connectedTo, Social Media Response>
+<Complaint Resolution, connectedTo, Self_Service Portal Management>
+<Cross_selling Opportunities, yes, Issue Escalation>
+<Customer Journey Mapping, connectedTo, Customer Satisfaction Survey>
+<Customer Journey Mapping, partOf, Sentiment Analysis>
+<Customer Loyalty Program Support, connectedTo, Service Blueprinting>
+<Customer Retention Strategies, connectedTo, Cross_selling Opportunities>
+<Customer Satisfaction Survey, connectedTo, Product Information Provision>
+<Customer Satisfaction Survey, partOf, Sentiment Analysis>
+<Customer Success Management, connectedTo, Account Management>
+<Customer Success Management, connectedTo, Personalized Assistance>
+<Customer Success Management, connectedTo, Product Information Provision>
+<Customer Success Management, connectedTo, Social Media Response>
+<Customer Success Management, connectedTo, end>
+<Customer Success Management, yes, Issue Escalation>
+<Feedback Collection, connectedTo, Refund Processing>
+<Feedback Collection, partOf, Customer Relationship Management System Use>
+<Issue Escalation, connectedTo, Knowledge Base Creation>
+<Knowledge Base Creation, connectedTo, end>
+<Personalized Assistance, connectedTo, Customer Retention Strategies>
+<Proactive Communication, connectedTo, Customer Success Management>
+<Proactive Communication, connectedTo, Virtual Assistant Interaction>
+<Product Information Provision, connectedTo, Call Center Management>
+<Product Information Provision, connectedTo, Feedback Collection>
+<Product Information Provision, connectedTo, Social Media Response>
+<Refund Processing, connectedTo, Customer Success Management>
+<Refund Processing, partOf, Customer Relationship Management System Use>
+<Self_Service Portal Management, connectedTo, Proactive Communication>
+<Service Blueprinting, connectedTo, Accessibility Support>
+<Service Blueprinting, connectedTo, Customer Retention Strategies>
+<Service Blueprinting, connectedTo, Social Media Response>
+<Social Media Response, connectedTo, Customer Retention Strategies>
+<Social Media Response, connectedTo, Personalized Assistance>
+<Virtual Assistant Interaction, connectedTo, Customer Journey Mapping>
+<Virtual Assistant Interaction, partOf, Sentiment Analysis>
+<start, connectedTo, Customer Loyalty Program Support>
+<start, connectedTo, Customer Retention Strategies>
diff --git a/train/mermaid/hard/mermaid_281.mmd b/train/mermaid/hard/mermaid_281.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f911ae1cc3b75e662d0fc8fe1fd585c0ff21186b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_281.mmd
@@ -0,0 +1,114 @@
+graph BT
+    N0([start])
+    N1([Cold Chain Logistics])
+    N2(Circular Economy Practices)
+    N3(Distribution Network Design)
+    N4([Third_Party Logistics Management])
+    N5(Reverse Logistics)
+    N6[(Predictive Analytics)]
+    N7[Global Sourcing Strategy]
+    N8[(Procurement)]
+    N9([Warehouse Automation])
+    N10[(Customs Compliance)]
+    N11(Freight Auditing)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Sustainability Initiatives
+        nest0_0[Inventory Management]
+        nest0_1[Logistics Optimization]
+        nest0_2[Collaborative Planning, Forecasting, and Replenishment]
+        nest0_3[(Demand Planning)]
+    end
+    subgraph Last_Mile Delivery Optimization
+        nest1_0[/Transportation Management/]
+        nest1_1[Material Flow Management]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> |monitors| N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N10 --> nest0_0
+    nest0_3 -.-> |certifies| N8
+    nest1_0 --> |risk| nest1_1
+    N4 --> nest1_0
+    nest1_1 --> N4
+    N4 --> S0
+    S0 -.-> N10
+    S0 --> N8
+    N7 -.-> S1
+    S1 --> N9
+    S1 -.-> N11
+    N1 -.-> M0
+    N0 --> M0
+    N2 --> M0
+    M0 -.-> N6
+    N0 --> M1
+    N4 -.-> M1
+    M1 --> N10
+    style N0 fill:#F0F0F0,stroke:#D2D2D2
+    style N1 fill:#D1C4E9,stroke:#673AB7
+    style N2 fill:#D1C4E9,stroke:#673AB7
+    style N3 fill:#FFF8E1,stroke:#FFD54F
+    style N4 fill:#FFF8E1,stroke:#FFD54F
+    style N5 fill:#FFF8E1,stroke:#FFD54F
+    style N6 fill:#D1C4E9,stroke:#673AB7
+    style N7 fill:#F0F0F0,stroke:#D2D2D2
+    style N8 fill:#FFF8E1,stroke:#FFD54F
+    style N9 fill:#D1C4E9,stroke:#673AB7
+    style N10 fill:#FFF8E1,stroke:#FFD54F
+    style N11 fill:#D1C4E9,stroke:#673AB7
+    style S0 fill:#F0F0F0,stroke:#D2D2D2
+    style S1 fill:#FFF8E1,stroke:#FFD54F
+    style M0 fill:#F0F0F0,stroke:#D2D2D2
+    style M1 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest0_1 fill:#FFF8E1,stroke:#FFD54F
+    style nest0_2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_3 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_1 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D2D2D2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_281.txt b/train/mermaid/hard/mermaid_281.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6d09d7dd1b732251ebbc25ccba5c1993f02901f6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_281.txt
@@ -0,0 +1,33 @@
+<Circular Economy Practices, connectedTo, Distribution Network Design>
+<Circular Economy Practices, connectedTo, Predictive Analytics>
+<Cold Chain Logistics, connectedTo, Circular Economy Practices>
+<Cold Chain Logistics, connectedTo, Predictive Analytics>
+<Collaborative Planning, Forecasting, and Replenishment, connectedTo, Demand Planning>
+<Collaborative Planning, Forecasting, and Replenishment, partOf, Sustainability Initiatives>
+<Customs Compliance, connectedTo, Freight Auditing>
+<Customs Compliance, connectedTo, Inventory Management>
+<Demand Planning, certifies, Procurement>
+<Demand Planning, partOf, Sustainability Initiatives>
+<Distribution Network Design, connectedTo, Third_Party Logistics Management>
+<Global Sourcing Strategy, connectedTo, Freight Auditing>
+<Global Sourcing Strategy, connectedTo, Procurement>
+<Global Sourcing Strategy, connectedTo, Warehouse Automation>
+<Inventory Management, connectedTo, Logistics Optimization>
+<Inventory Management, partOf, Sustainability Initiatives>
+<Logistics Optimization, connectedTo, Collaborative Planning, Forecasting, and Replenishment>
+<Logistics Optimization, partOf, Sustainability Initiatives>
+<Material Flow Management, connectedTo, Third_Party Logistics Management>
+<Material Flow Management, partOf, Last_Mile Delivery Optimization>
+<Predictive Analytics, monitors, Global Sourcing Strategy>
+<Procurement, connectedTo, Warehouse Automation>
+<Reverse Logistics, connectedTo, Predictive Analytics>
+<Third_Party Logistics Management, connectedTo, Customs Compliance>
+<Third_Party Logistics Management, connectedTo, Procurement>
+<Third_Party Logistics Management, connectedTo, Reverse Logistics>
+<Third_Party Logistics Management, connectedTo, Transportation Management>
+<Transportation Management, partOf, Last_Mile Delivery Optimization>
+<Transportation Management, risk, Material Flow Management>
+<Warehouse Automation, connectedTo, Customs Compliance>
+<start, connectedTo, Cold Chain Logistics>
+<start, connectedTo, Customs Compliance>
+<start, connectedTo, Predictive Analytics>
diff --git a/train/mermaid/hard/mermaid_282.txt b/train/mermaid/hard/mermaid_282.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3c4c17127a1286474b3cb785d53575d0ccf67c1a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_282.txt
@@ -0,0 +1,40 @@
+<Cold Chain Logistics, connectedTo, Data Analytics for Supply Chain>
+<Cold Chain Logistics, connectedTo, Intermodal Transportation>
+<Collaborative Planning, Forecasting, and Replenishment, partOf, Vendor Managed Inventory>
+<Collaborative Planning, Forecasting, and Replenishment, yes, Hazardous Materials Handling>
+<Contract Manufacturing Oversight, yes, Sustainability Initiatives>
+<Customs Compliance, connectedTo, Data Analytics for Supply Chain>
+<Customs Compliance, connectedTo, Inventory Management>
+<Customs Compliance, connectedTo, Production Planning>
+<Customs Compliance, connectedTo, Supply Chain Visibility>
+<Customs Compliance, connectedTo, Sustainability Initiatives>
+<Data Analytics for Supply Chain, connectedTo, Distribution Network Design>
+<Data Analytics for Supply Chain, connectedTo, Production Planning>
+<Demand Planning, connectedTo, Production Planning>
+<Demand Planning, partOf, Vendor Managed Inventory>
+<Distribution Network Design, connectedTo, Logistics Optimization>
+<Distribution Network Design, partOf, Risk Management>
+<Hazardous Materials Handling, connectedTo, Demand Planning>
+<Hazardous Materials Handling, partOf, Vendor Managed Inventory>
+<Intermodal Transportation, connectedTo, Inventory Management>
+<Intermodal Transportation, connectedTo, Production Planning>
+<Intermodal Transportation, connectedTo, Supply Chain Visibility>
+<Intermodal Transportation, connectedTo, Sustainability Initiatives>
+<Intermodal Transportation, yes, Production Scheduling Integration>
+<Logistics Optimization, connectedTo, Supply Chain Finance>
+<Logistics Optimization, partOf, Risk Management>
+<Performance Monitoring, connectedTo, Contract Manufacturing Oversight>
+<Performance Monitoring, connectedTo, Quality Control in Supply Chain>
+<Production Planning, connectedTo, Inventory Management>
+<Production Scheduling Integration, connectedTo, Customs Compliance>
+<Production Scheduling Integration, connectedTo, Supply Chain Visibility>
+<Quality Control in Supply Chain, connectedTo, Collaborative Planning, Forecasting, and Replenishment>
+<Quality Control in Supply Chain, partOf, Vendor Managed Inventory>
+<Supplier Selection, connectedTo, Production Planning>
+<Supplier Selection, partOf, Risk Management>
+<Supply Chain Finance, connectedTo, Supplier Selection>
+<Supply Chain Finance, partOf, Risk Management>
+<Supply Chain Visibility, connectedTo, Performance Monitoring>
+<Sustainability Initiatives, connectedTo, Data Analytics for Supply Chain>
+<start, connectedTo, Cold Chain Logistics>
+<start, connectedTo, Supply Chain Visibility>
diff --git a/train/mermaid/hard/mermaid_284.txt b/train/mermaid/hard/mermaid_284.txt
new file mode 100644
index 0000000000000000000000000000000000000000..33a853b1e42fd8e7243954729683f7203989779a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_284.txt
@@ -0,0 +1,41 @@
+<Blockchain for Traceability, yes, Material Flow Management>
+<Circular Economy Practices, connectedTo, Blockchain for Traceability>
+<Circular Economy Practices, connectedTo, Global Sourcing Strategy>
+<Circular Economy Practices, connectedTo, Hazardous Materials Handling>
+<Circular Economy Practices, connectedTo, Warehousing>
+<Collaborative Planning, Forecasting, and Replenishment, connectedTo, Blockchain for Traceability>
+<Collaborative Planning, Forecasting, and Replenishment, connectedTo, Digital Twin of Supply Chain>
+<Collaborative Planning, Forecasting, and Replenishment, connectedTo, Warehouse Automation>
+<Container Tracking, connectedTo, Circular Economy Practices>
+<Container Tracking, partOf, Supplier Relationship Management>
+<Demand Planning, connectedTo, Hazardous Materials Handling>
+<Digital Twin of Supply Chain, connectedTo, Global Sourcing Strategy>
+<Global Sourcing Strategy, connectedTo, Risk Management>
+<Hazardous Materials Handling, connectedTo, Collaborative Planning, Forecasting, and Replenishment>
+<Hazardous Materials Handling, connectedTo, Warehouse Automation>
+<Inventory Management, connectedTo, Third_Party Logistics Management>
+<Inventory Management, partOf, Production Planning>
+<Logistics Optimization, connectedTo, Demand Planning>
+<Logistics Optimization, connectedTo, Inventory Management>
+<Material Flow Management, connectedTo, Predictive Analytics>
+<Performance Monitoring, connectedTo, Logistics Optimization>
+<Performance Monitoring, connectedTo, Quality Control in Supply Chain>
+<Predictive Analytics, connectedTo, end>
+<Procurement, connectedTo, Predictive Analytics>
+<Procurement, partOf, Production Planning>
+<Production Scheduling Integration, connectedTo, Container Tracking>
+<Production Scheduling Integration, partOf, Supplier Relationship Management>
+<Quality Control in Supply Chain, connectedTo, Production Scheduling Integration>
+<Quality Control in Supply Chain, partOf, Supplier Relationship Management>
+<Risk Management, connectedTo, Blockchain for Traceability>
+<Risk Management, connectedTo, Warehouse Automation>
+<Third_Party Logistics Management, connectedTo, Procurement>
+<Third_Party Logistics Management, partOf, Production Planning>
+<Warehouse Automation, connectedTo, Blockchain for Traceability>
+<Warehouse Automation, connectedTo, Material Flow Management>
+<Warehouse Automation, connectedTo, Predictive Analytics>
+<Warehouse Automation, connectedTo, end>
+<Warehousing, connectedTo, Performance Monitoring>
+<start, connectedTo, Blockchain for Traceability>
+<start, connectedTo, Circular Economy Practices>
+<start, connectedTo, Hazardous Materials Handling>
diff --git a/train/mermaid/hard/mermaid_286.txt b/train/mermaid/hard/mermaid_286.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e0077f5bbde0de5591091f08d76fc68da7ffa4f2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_286.txt
@@ -0,0 +1,40 @@
+<Blockchain for Traceability, no, Freight Auditing>
+<Blockchain for Traceability, partOf, Supply Chain Finance>
+<Cold Chain Logistics, connectedTo, Vendor Managed Inventory>
+<Cold Chain Logistics, partOf, Performance Monitoring>
+<Container Tracking, connectedTo, Distribution Network Design>
+<Container Tracking, partOf, Supply Chain Finance>
+<Customs Compliance, connectedTo, Freight Auditing>
+<Customs Compliance, connectedTo, Hazardous Materials Handling>
+<Customs Compliance, connectedTo, Supply Chain Visibility>
+<Distribution Network Design, connectedTo, Blockchain for Traceability>
+<Distribution Network Design, partOf, Supply Chain Finance>
+<Hazardous Materials Handling, connectedTo, Supply Chain Visibility>
+<Hazardous Materials Handling, connectedTo, Warehousing>
+<Intermodal Transportation, connectedTo, Cold Chain Logistics>
+<Intermodal Transportation, partOf, Performance Monitoring>
+<Logistics Optimization, connectedTo, Supply Chain Visibility>
+<Logistics Optimization, yes, Material Flow Management>
+<Material Flow Management, connectedTo, Customs Compliance>
+<Material Flow Management, connectedTo, Freight Auditing>
+<Material Flow Management, no, Supply Chain Visibility>
+<Predictive Analytics, connectedTo, Container Tracking>
+<Predictive Analytics, partOf, Supply Chain Finance>
+<Production Planning, connectedTo, Material Flow Management>
+<Production Planning, partOf, Performance Monitoring>
+<Reverse Logistics, connectedTo, Freight Auditing>
+<Reverse Logistics, connectedTo, Risk Mitigation Strategies>
+<Risk Mitigation Strategies, connectedTo, Freight Auditing>
+<Risk Mitigation Strategies, connectedTo, Intermodal Transportation>
+<Risk Mitigation Strategies, connectedTo, Predictive Analytics>
+<Supplier Relationship Management, connectedTo, Freight Auditing>
+<Supplier Relationship Management, connectedTo, Reverse Logistics>
+<Supplier Relationship Management, connectedTo, Risk Mitigation Strategies>
+<Supplier Relationship Management, connectedTo, Supply Chain Visibility>
+<Supply Chain Visibility, connectedTo, Freight Auditing>
+<Supply Chain Visibility, connectedTo, Reverse Logistics>
+<Supply Chain Visibility, connectedTo, Risk Mitigation Strategies>
+<Vendor Managed Inventory, connectedTo, Production Planning>
+<Vendor Managed Inventory, partOf, Performance Monitoring>
+<Warehousing, connectedTo, Supplier Relationship Management>
+<start, connectedTo, Logistics Optimization>
diff --git a/train/mermaid/hard/mermaid_289.txt b/train/mermaid/hard/mermaid_289.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9d3e28e0762d3d3a424e7adce2399e7ca2c0b6dd
--- /dev/null
+++ b/train/mermaid/hard/mermaid_289.txt
@@ -0,0 +1,43 @@
+<Core Logging, connectedTo, Ore Extraction>
+<Core Logging, partOf, Safety Management>
+<Crushing and Grinding, connectedTo, Open Pit Mining Operations>
+<Drilling and Blasting, connectedTo, Crushing and Grinding>
+<Emergency Response Planning, connectedTo, Energy Management>
+<Emergency Response Planning, connectedTo, Feasibility Study>
+<Emergency Response Planning, connectedTo, Mine Planning>
+<Emergency Response Planning, optimizes, Feasibility Study>
+<Exploration Drilling, connectedTo, Remote Operations Center>
+<Exploration Drilling, partOf, Environmental Impact Assessment>
+<Feasibility Study, connectedTo, Mine Closure Planning>
+<Geological Survey, connectedTo, Feasibility Study>
+<Geological Survey, connectedTo, Mineral Processing>
+<Geological Survey, connectedTo, Underground Mining Operations>
+<Haulage, connectedTo, Emergency Response Planning>
+<Haulage, connectedTo, Mineral Processing>
+<Mine Closure Planning, connectedTo, Energy Management>
+<Mine Closure Planning, connectedTo, Mineral Processing>
+<Mine Closure Planning, connectedTo, Remote Operations Center>
+<Mine Planning, connectedTo, Noise Management>
+<Mineral Processing, connectedTo, Ore Extraction>
+<Noise Management, connectedTo, Feasibility Study>
+<Noise Management, connectedTo, Robotics in Mining>
+<Open Pit Mining Operations, connectedTo, Haulage>
+<Ore Extraction, connectedTo, Energy Management>
+<Permit Acquisition, connectedTo, Exploration Drilling>
+<Permit Acquisition, partOf, Environmental Impact Assessment>
+<Product Marketing, connectedTo, Drilling and Blasting>
+<Reclamation, connectedTo, Feasibility Study>
+<Reclamation, connectedTo, Product Marketing>
+<Remote Operations Center, connectedTo, Energy Management>
+<Remote Operations Center, connectedTo, Mineral Processing>
+<Remote Operations Center, connectedTo, Ore Extraction>
+<Robotics in Mining, connectedTo, Geological Survey>
+<Robotics in Mining, connectedTo, Waste Rock Management>
+<Smelting, connectedTo, Permit Acquisition>
+<Smelting, partOf, Environmental Impact Assessment>
+<Underground Mining Operations, connectedTo, Water Management>
+<Underground Mining Operations, partOf, Safety Management>
+<Waste Rock Management, connectedTo, Smelting>
+<Waste Rock Management, partOf, Environmental Impact Assessment>
+<Water Management, connectedTo, Core Logging>
+<Water Management, partOf, Safety Management>
diff --git a/train/mermaid/hard/mermaid_29.mmd b/train/mermaid/hard/mermaid_29.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..82e5468e63084eea9afd75bb1a0488a6b6d75e45
--- /dev/null
+++ b/train/mermaid/hard/mermaid_29.mmd
@@ -0,0 +1,150 @@
+graph BT
+    N0([Faculty Recruitment])
+    N1{Course Material Preparation}
+    N2(Graduation Approval)
+    N3[/Academic Review/]
+    N4[Extracurricular Activity]
+    N5[Scholarship Evaluation]
+    N6(Research Grant Application)
+    N7[[Student Application]]
+    N8[/Timetable Scheduling/]
+    N9(Disciplinary Action)
+    N10[Student Enrollment]
+    N11[(Alumni Network Management)]
+    N12[[Online Learning Platform Management]]
+    N13(School Accreditation)
+    N14[/Exam Conduct/]
+    N15([end])
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Library Registration
+        nest0_0[Thesis Submission]
+        nest0_1[Peer Tutoring]
+        nest0_2[/Special Education Support/]
+        nest0_3(Student Feedback Collection)
+    end
+    subgraph Grade Entry
+        nest1_0{Field Trip Coordination}
+        nest1_1([Internship Coordination])
+        nest1_2([Certificate Issuance])
+        nest1_3[Assignment Submission]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N6 -.-> nest0_0
+    nest0_3 -.-> N12
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N7 --> |awards| nest1_0
+    nest1_3 -.-> N6
+    N3 -.-> S1
+    S1 --> N7
+    S1 -.-> N8
+    S1 -.-> N13
+    N1 --> M0
+    N0 -.-> M0
+    N13 --> M0
+    N10 --> M0
+    M0 -.-> N15
+    N0 -.-> M1
+    N3 -.-> M1
+    N7 -.-> M1
+    N5 --> M1
+    M1 -.-> N10
+    N10 --> M2
+    N4 --> M2
+    N9 --> M2
+    N6 --> M2
+    M2 --> N12
+    style N0 fill:#F1F8FF,stroke:#42A5F5
+    style N1 fill:#D1C4E9,stroke:#7E57C2
+    style N2 fill:#F1F8FF,stroke:#42A5F5
+    style N3 fill:#D1C4E9,stroke:#7E57C2
+    style N4 fill:#D6D9F0,stroke:#9FA9E1
+    style N5 fill:#F1F8FF,stroke:#42A5F5
+    style N6 fill:#F1F8FF,stroke:#42A5F5
+    style N7 fill:#D6D9F0,stroke:#9FA9E1
+    style N8 fill:#F1F8FF,stroke:#42A5F5
+    style N9 fill:#D1C4E9,stroke:#7E57C2
+    style N10 fill:#D1C4E9,stroke:#7E57C2
+    style N11 fill:#F1F8FF,stroke:#42A5F5
+    style N12 fill:#F1F8FF,stroke:#42A5F5
+    style N13 fill:#F1F8FF,stroke:#42A5F5
+    style N14 fill:#D1C4E9,stroke:#7E57C2
+    style N15 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style M0 fill:#D6D9F0,stroke:#9FA9E1
+    style M1 fill:#F1F8FF,stroke:#42A5F5
+    style M2 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_1 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_2 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_3 fill:#F1F8FF,stroke:#42A5F5
+    style nest1_0 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_1 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_2 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_3 fill:#D6D9F0,stroke:#9FA9E1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#7E57C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_29.txt b/train/mermaid/hard/mermaid_29.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6720e402388a0d229a7ccb5e8665575ab6185b9d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_29.txt
@@ -0,0 +1,48 @@
+<Academic Review, connectedTo, Extracurricular Activity>
+<Academic Review, connectedTo, School Accreditation>
+<Academic Review, connectedTo, Student Application>
+<Academic Review, connectedTo, Student Enrollment>
+<Academic Review, connectedTo, Timetable Scheduling>
+<Alumni Network Management, connectedTo, Online Learning Platform Management>
+<Assignment Submission, connectedTo, Research Grant Application>
+<Assignment Submission, partOf, Grade Entry>
+<Certificate Issuance, connectedTo, Assignment Submission>
+<Certificate Issuance, partOf, Grade Entry>
+<Course Material Preparation, connectedTo, Graduation Approval>
+<Course Material Preparation, connectedTo, end>
+<Disciplinary Action, connectedTo, Online Learning Platform Management>
+<Disciplinary Action, connectedTo, Student Enrollment>
+<Exam Conduct, connectedTo, end>
+<Extracurricular Activity, connectedTo, Online Learning Platform Management>
+<Extracurricular Activity, connectedTo, Scholarship Evaluation>
+<Faculty Recruitment, connectedTo, Course Material Preparation>
+<Faculty Recruitment, connectedTo, Student Enrollment>
+<Faculty Recruitment, connectedTo, end>
+<Field Trip Coordination, connectedTo, Internship Coordination>
+<Field Trip Coordination, partOf, Grade Entry>
+<Graduation Approval, connectedTo, Academic Review>
+<Internship Coordination, connectedTo, Certificate Issuance>
+<Internship Coordination, partOf, Grade Entry>
+<Online Learning Platform Management, connectedTo, School Accreditation>
+<Peer Tutoring, connectedTo, Special Education Support>
+<Peer Tutoring, partOf, Library Registration>
+<Research Grant Application, connectedTo, Online Learning Platform Management>
+<Research Grant Application, connectedTo, Student Application>
+<Research Grant Application, connectedTo, Thesis Submission>
+<Scholarship Evaluation, connectedTo, Research Grant Application>
+<Scholarship Evaluation, connectedTo, Student Enrollment>
+<School Accreditation, connectedTo, Exam Conduct>
+<School Accreditation, connectedTo, end>
+<Special Education Support, connectedTo, Student Feedback Collection>
+<Special Education Support, partOf, Library Registration>
+<Student Application, awards, Field Trip Coordination>
+<Student Application, connectedTo, Student Enrollment>
+<Student Application, connectedTo, Timetable Scheduling>
+<Student Enrollment, connectedTo, Alumni Network Management>
+<Student Enrollment, connectedTo, Online Learning Platform Management>
+<Student Enrollment, connectedTo, end>
+<Student Feedback Collection, connectedTo, Online Learning Platform Management>
+<Student Feedback Collection, partOf, Library Registration>
+<Thesis Submission, connectedTo, Peer Tutoring>
+<Thesis Submission, partOf, Library Registration>
+<Timetable Scheduling, connectedTo, Disciplinary Action>
diff --git a/train/mermaid/hard/mermaid_292.mmd b/train/mermaid/hard/mermaid_292.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..68c747896d36fee35b315f11c77de9689741dc57
--- /dev/null
+++ b/train/mermaid/hard/mermaid_292.mmd
@@ -0,0 +1,110 @@
+graph RL
+    N0([start])
+    N1(Crushing and Grinding)
+    N2[[Remote Operations Center]]
+    N3[Mine Dewatering]
+    N4([Tailings Management])
+    N5[[Equipment Maintenance]]
+    N6[Geotechnical Stability Analysis]
+    N7[/Reclamation/]
+    N8[/Noise Management/]
+    N9[(Community Relations)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Refining
+        nest0_0[Geological Survey]
+        nest0_1[/Autonomous Haulage Systems/]
+        nest0_2([Regulatory Compliance Reporting])
+        nest0_3(Asset Management)
+    end
+    subgraph Open Pit Mining Operations
+        nest1_0[(Emergency Response Planning)]
+        nest1_1(Mineral Processing)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N1 --> nest0_0
+    nest0_3 -.-> N6
+    nest1_0 -.-> nest1_1
+    N4 -.-> nest1_0
+    nest1_1 --> N7
+    N6 --> S0
+    S0 --> N8
+    S0 -.-> N9
+    N4 -.-> S1
+    S1 --> N7
+    S1 --> N6
+    S1 -.-> N9
+    S1 --> |no| N8
+    N3 -.-> S2
+    S2 --> N5
+    S2 -.-> N8
+    S2 --> N9
+    S2 -.-> N6
+    N0 --> M0
+    N3 --> M0
+    N1 --> M0
+    N2 --> |no| M0
+    M0 -.-> N5
+    N2 --> M1
+    N0 --> M1
+    N3 --> M1
+    M1 -.-> N5
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style S2 fill:#D0EFEE,stroke:#73C6BC
+    style M0 fill:#D0EFEE,stroke:#73C6BC
+    style M1 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#42A5F5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_292.txt b/train/mermaid/hard/mermaid_292.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f737e901023ce708bd074b976100243b4060ba38
--- /dev/null
+++ b/train/mermaid/hard/mermaid_292.txt
@@ -0,0 +1,37 @@
+<Asset Management, connectedTo, Geotechnical Stability Analysis>
+<Asset Management, partOf, Refining>
+<Autonomous Haulage Systems, connectedTo, Regulatory Compliance Reporting>
+<Autonomous Haulage Systems, partOf, Refining>
+<Crushing and Grinding, connectedTo, Equipment Maintenance>
+<Crushing and Grinding, connectedTo, Geological Survey>
+<Crushing and Grinding, connectedTo, Remote Operations Center>
+<Emergency Response Planning, connectedTo, Mineral Processing>
+<Emergency Response Planning, partOf, Open Pit Mining Operations>
+<Equipment Maintenance, connectedTo, Geotechnical Stability Analysis>
+<Geological Survey, connectedTo, Autonomous Haulage Systems>
+<Geological Survey, partOf, Refining>
+<Geotechnical Stability Analysis, connectedTo, Community Relations>
+<Geotechnical Stability Analysis, connectedTo, Noise Management>
+<Geotechnical Stability Analysis, connectedTo, Reclamation>
+<Mine Dewatering, connectedTo, Community Relations>
+<Mine Dewatering, connectedTo, Equipment Maintenance>
+<Mine Dewatering, connectedTo, Geotechnical Stability Analysis>
+<Mine Dewatering, connectedTo, Noise Management>
+<Mine Dewatering, connectedTo, Tailings Management>
+<Mineral Processing, connectedTo, Reclamation>
+<Mineral Processing, partOf, Open Pit Mining Operations>
+<Noise Management, connectedTo, Community Relations>
+<Reclamation, connectedTo, Noise Management>
+<Regulatory Compliance Reporting, connectedTo, Asset Management>
+<Regulatory Compliance Reporting, partOf, Refining>
+<Remote Operations Center, connectedTo, Equipment Maintenance>
+<Remote Operations Center, connectedTo, Mine Dewatering>
+<Remote Operations Center, no, Equipment Maintenance>
+<Tailings Management, connectedTo, Community Relations>
+<Tailings Management, connectedTo, Emergency Response Planning>
+<Tailings Management, connectedTo, Equipment Maintenance>
+<Tailings Management, connectedTo, Geotechnical Stability Analysis>
+<Tailings Management, connectedTo, Reclamation>
+<Tailings Management, no, Noise Management>
+<start, connectedTo, Crushing and Grinding>
+<start, connectedTo, Equipment Maintenance>
diff --git a/train/mermaid/hard/mermaid_293.mmd b/train/mermaid/hard/mermaid_293.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..88b6b62ae38c48bfd780e90e1d6656d07237bb7f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_293.mmd
@@ -0,0 +1,116 @@
+graph TD
+    N0([Core Logging])
+    N1(Tailings Management)
+    N2(Feasibility Study)
+    N3[[Resource Estimation]]
+    N4[Water Management]
+    N5[/Geological Survey/]
+    N6[/Autonomous Haulage Systems/]
+    N7([Regulatory Compliance Reporting])
+    N8[/Mine Dewatering/]
+    N9([Exploration])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Ore Extraction
+        nest0_0[Energy Management]
+        nest0_1[/Reclamation/]
+        nest0_2[Dust Control]
+    end
+    subgraph Permit Acquisition
+        nest1_0{Product Marketing}
+        nest1_1(Underground Mining Operations)
+        nest1_2[/Mineral Processing/]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N1 --> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> |plans| nest1_2
+    N6 -.-> nest1_0
+    nest1_2 --> N2
+    N0 --> S0
+    S0 --> N8
+    S0 --> N9
+    S0 -.-> N6
+    N0 --> S1
+    S1 --> N6
+    S1 -.-> N2
+    N6 -.-> S2
+    S2 --> N9
+    S2 --> N8
+    N1 -.-> M0
+    N0 --> M0
+    M0 -.-> N3
+    N2 --> M1
+    N6 --> M1
+    N3 -.-> M1
+    M1 --> N8
+    style N0 fill:#D3F7F9,stroke:#80DDEA
+    style N1 fill:#E0E6E9,stroke:#AABEC6
+    style N2 fill:#BBDEFB,stroke:#2196F3
+    style N3 fill:#E0E6E9,stroke:#AABEC6
+    style N4 fill:#BBDEFB,stroke:#2196F3
+    style N5 fill:#E0E6E9,stroke:#AABEC6
+    style N6 fill:#D3F7F9,stroke:#80DDEA
+    style N7 fill:#D3F7F9,stroke:#80DDEA
+    style N8 fill:#D3F7F9,stroke:#80DDEA
+    style N9 fill:#D3F7F9,stroke:#80DDEA
+    style S0 fill:#D3F7F9,stroke:#80DDEA
+    style S1 fill:#D3F7F9,stroke:#80DDEA
+    style S2 fill:#BBDEFB,stroke:#2196F3
+    style M0 fill:#D3F7F9,stroke:#80DDEA
+    style M1 fill:#BBDEFB,stroke:#2196F3
+    style nest0_0 fill:#BBDEFB,stroke:#2196F3
+    style nest0_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_2 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_0 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_1 fill:#BBDEFB,stroke:#2196F3
+    style nest1_2 fill:#E0E6E9,stroke:#AABEC6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#2196F3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_295.mmd b/train/mermaid/hard/mermaid_295.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..50e54706fdb7a47d4a9bf387e67b420d9feac7a1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_295.mmd
@@ -0,0 +1,116 @@
+graph TD
+    N0([Underground Mining Operations])
+    N1[Tailings Management]
+    N2(Mine Planning)
+    N3[Drilling and Blasting]
+    N4(Asset Management)
+    N5(Community Relations)
+    N6[Ore Extraction]
+    N7[Refining]
+    N8(Geotechnical Stability Analysis)
+    N9{Smelting}
+    N10([Safety Management])
+    N11[[Waste Rock Management]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Remote Operations Center
+        nest0_0[Water Management]
+        nest0_1(Autonomous Haulage Systems)
+    end
+    subgraph Product Marketing
+        nest1_0(Mine Dewatering)
+        nest1_1[Feasibility Study]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> |monitors| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> |invests| N10
+    N10 -.-> N11
+    nest0_0 -.-> nest0_1
+    N4 --> nest0_0
+    nest0_1 -.-> N7
+    nest1_0 --> nest1_1
+    N6 -.-> nest1_0
+    nest1_1 --> N2
+    N8 -.-> S0
+    S0 --> N11
+    S0 --> N10
+    N5 --> S1
+    S1 -.-> N8
+    S1 --> N10
+    S1 --> N11
+    N3 -.-> S2
+    S2 --> N11
+    S2 -.-> N6
+    S2 --> N10
+    N5 -.-> M0
+    N7 --> M0
+    M0 --> N9
+    N4 -.-> M1
+    N1 -.-> M1
+    M1 --> N11
+    style N0 fill:#D1C4E9,stroke:#673AB7
+    style N1 fill:#D1C4E9,stroke:#673AB7
+    style N2 fill:#E1F5FE,stroke:#4FC3F7
+    style N3 fill:#D1C4E9,stroke:#673AB7
+    style N4 fill:#E1F5FE,stroke:#4FC3F7
+    style N5 fill:#F5F5DC,stroke:#BCB88A
+    style N6 fill:#E1F5FE,stroke:#4FC3F7
+    style N7 fill:#D1C4E9,stroke:#673AB7
+    style N8 fill:#E1F5FE,stroke:#4FC3F7
+    style N9 fill:#F5F5DC,stroke:#BCB88A
+    style N10 fill:#D1C4E9,stroke:#673AB7
+    style N11 fill:#F5F5DC,stroke:#BCB88A
+    style S0 fill:#F5F5DC,stroke:#BCB88A
+    style S1 fill:#E1F5FE,stroke:#4FC3F7
+    style S2 fill:#F5F5DC,stroke:#BCB88A
+    style M0 fill:#E1F5FE,stroke:#4FC3F7
+    style M1 fill:#D1C4E9,stroke:#673AB7
+    style nest0_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_1 fill:#D1C4E9,stroke:#673AB7
+    style nest1_0 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_1 fill:#D1C4E9,stroke:#673AB7
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BCB88A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_295.txt b/train/mermaid/hard/mermaid_295.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9a0bb087330852fe16aa452e50e2d08c321c1af2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_295.txt
@@ -0,0 +1,33 @@
+<Asset Management, connectedTo, Community Relations>
+<Asset Management, connectedTo, Waste Rock Management>
+<Asset Management, connectedTo, Water Management>
+<Autonomous Haulage Systems, connectedTo, Refining>
+<Autonomous Haulage Systems, partOf, Remote Operations Center>
+<Community Relations, connectedTo, Geotechnical Stability Analysis>
+<Community Relations, connectedTo, Ore Extraction>
+<Community Relations, connectedTo, Safety Management>
+<Community Relations, connectedTo, Smelting>
+<Community Relations, connectedTo, Waste Rock Management>
+<Drilling and Blasting, connectedTo, Asset Management>
+<Drilling and Blasting, connectedTo, Ore Extraction>
+<Drilling and Blasting, connectedTo, Safety Management>
+<Drilling and Blasting, connectedTo, Waste Rock Management>
+<Feasibility Study, connectedTo, Mine Planning>
+<Feasibility Study, partOf, Product Marketing>
+<Geotechnical Stability Analysis, connectedTo, Safety Management>
+<Geotechnical Stability Analysis, connectedTo, Smelting>
+<Geotechnical Stability Analysis, connectedTo, Waste Rock Management>
+<Mine Dewatering, connectedTo, Feasibility Study>
+<Mine Dewatering, partOf, Product Marketing>
+<Mine Planning, connectedTo, Drilling and Blasting>
+<Ore Extraction, connectedTo, Mine Dewatering>
+<Ore Extraction, monitors, Refining>
+<Refining, connectedTo, Geotechnical Stability Analysis>
+<Refining, connectedTo, Smelting>
+<Safety Management, connectedTo, Waste Rock Management>
+<Smelting, invests, Safety Management>
+<Tailings Management, connectedTo, Mine Planning>
+<Tailings Management, connectedTo, Waste Rock Management>
+<Underground Mining Operations, connectedTo, Tailings Management>
+<Water Management, connectedTo, Autonomous Haulage Systems>
+<Water Management, partOf, Remote Operations Center>
diff --git a/train/mermaid/hard/mermaid_296.txt b/train/mermaid/hard/mermaid_296.txt
new file mode 100644
index 0000000000000000000000000000000000000000..86450bcf64af32c4f4e6515cbf9fdcb3c275802f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_296.txt
@@ -0,0 +1,32 @@
+<Asset Management, connectedTo, Energy Management>
+<Autonomous Haulage Systems, connectedTo, Crushing and Grinding>
+<Autonomous Haulage Systems, connectedTo, Product Marketing>
+<Crushing and Grinding, connectedTo, Mine Closure Planning>
+<Crushing and Grinding, partOf, Mineral Processing>
+<Drilling and Blasting, connectedTo, Mine Planning>
+<Drilling and Blasting, partOf, Regulatory Compliance Reporting>
+<Dust Control, connectedTo, Equipment Maintenance>
+<Dust Control, connectedTo, Product Marketing>
+<Energy Management, connectedTo, Environmental Impact Assessment>
+<Energy Management, connectedTo, Feasibility Study>
+<Energy Management, connectedTo, Product Marketing>
+<Energy Management, no, Dust Control>
+<Environmental Impact Assessment, connectedTo, Tailings Management>
+<Equipment Maintenance, connectedTo, Autonomous Haulage Systems>
+<Equipment Maintenance, connectedTo, Product Marketing>
+<Feasibility Study, connectedTo, Drilling and Blasting>
+<Feasibility Study, partOf, Regulatory Compliance Reporting>
+<Geological Survey, connectedTo, Exploration>
+<Geological Survey, partOf, Regulatory Compliance Reporting>
+<Mine Closure Planning, connectedTo, Asset Management>
+<Mine Closure Planning, partOf, Mineral Processing>
+<Mine Planning, connectedTo, Geological Survey>
+<Mine Planning, partOf, Regulatory Compliance Reporting>
+<Product Marketing, connectedTo, Exploration>
+<Tailings Management, connectedTo, Autonomous Haulage Systems>
+<Tailings Management, connectedTo, Dust Control>
+<Tailings Management, connectedTo, Equipment Maintenance>
+<Tailings Management, connectedTo, Exploration>
+<Tailings Management, connectedTo, Product Marketing>
+<start, connectedTo, Asset Management>
+<start, connectedTo, Product Marketing>
diff --git a/train/mermaid/hard/mermaid_297.txt b/train/mermaid/hard/mermaid_297.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cfde27913d668c531e9ef5b758e516c3e1dbf6c9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_297.txt
@@ -0,0 +1,43 @@
+<Autonomous Vessels, charts, Vessel Chartering>
+<Ballast Water Management, connectedTo, Autonomous Vessels>
+<Ballast Water Management, connectedTo, Marine Data Analytics>
+<Ballast Water Management, connectedTo, Maritime Security>
+<Ballast Water Management, connectedTo, Ship Design>
+<Cargo Loading, connectedTo, Fuel Consumption Optimization>
+<Container Tracking, connectedTo, Autonomous Vessels>
+<Container Tracking, partOf, Pilotage>
+<Customs Clearance, connectedTo, Ballast Water Management>
+<Customs Clearance, connectedTo, Port Operations>
+<Customs Clearance, responds, Search and Rescue Coordination>
+<Dry Docking, connectedTo, Ballast Water Management>
+<Dry Docking, connectedTo, Fleet Management>
+<Fisheries Management, connectedTo, Voyage Optimization>
+<Fisheries Management, partOf, Pilotage>
+<Fleet Management, connectedTo, Ballast Water Management>
+<Fleet Management, connectedTo, Cargo Loading>
+<Fleet Management, connectedTo, Route Planning>
+<Fuel Consumption Optimization, connectedTo, Customs Clearance>
+<Hydrographic Surveying, connectedTo, Inland Waterway Transport>
+<Hydrographic Surveying, connectedTo, Ship_to_Shore Communication>
+<Inland Waterway Transport, connectedTo, Vessel Maintenance>
+<Marine Data Analytics, connectedTo, Search and Rescue Coordination>
+<Maritime Security, connectedTo, Hydrographic Surveying>
+<Navigation, loads, Port Congestion Management>
+<Offshore Operations, connectedTo, Salvage Operations>
+<Offshore Operations, partOf, Maritime Law Compliance>
+<Pollution Control, connectedTo, Autonomous Vessels>
+<Port Congestion Management, connectedTo, Maritime Security>
+<Port Congestion Management, connectedTo, Search and Rescue Coordination>
+<Port Operations, connectedTo, Ballast Water Management>
+<Port Operations, connectedTo, Search and Rescue Coordination>
+<Route Planning, connectedTo, Fisheries Management>
+<Route Planning, partOf, Pilotage>
+<Salvage Operations, connectedTo, Cargo Loading>
+<Salvage Operations, partOf, Maritime Law Compliance>
+<Ship Design, communicates, Pollution Control>
+<Ship_to_Shore Communication, connectedTo, Offshore Operations>
+<Ship_to_Shore Communication, partOf, Maritime Law Compliance>
+<Vessel Chartering, connectedTo, Navigation>
+<Vessel Maintenance, connectedTo, Marine Data Analytics>
+<Voyage Optimization, connectedTo, Container Tracking>
+<Voyage Optimization, partOf, Pilotage>
diff --git a/train/mermaid/hard/mermaid_299.txt b/train/mermaid/hard/mermaid_299.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d71369922667730b5d1dec2a4012b5c4f56fdfb0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_299.txt
@@ -0,0 +1,34 @@
+<Container Tracking, connectedTo, Offshore Operations>
+<Fuel Consumption Optimization, connectedTo, Vessel Maintenance>
+<Fuel Consumption Optimization, partOf, Maritime Security>
+<Marine Data Analytics, connectedTo, Route Planning>
+<Marine Data Analytics, partOf, Voyage Optimization>
+<Marine Insurance, connectedTo, Container Tracking>
+<Marine Insurance, connectedTo, Crew Management>
+<Marine Insurance, connectedTo, Offshore Operations>
+<Marine Insurance, connectedTo, Route Planning>
+<Marine Research, connectedTo, Terminal Management>
+<Marine Research, partOf, Voyage Optimization>
+<Navigation, connectedTo, Marine Data Analytics>
+<Navigation, partOf, Voyage Optimization>
+<Offshore Operations, connectedTo, Crew Management>
+<Offshore Operations, no, Marine Research>
+<Pollution Control, connectedTo, Fuel Consumption Optimization>
+<Pollution Control, partOf, Maritime Security>
+<Port Congestion Management, connectedTo, Container Tracking>
+<Port Congestion Management, connectedTo, Crew Management>
+<Port Congestion Management, connectedTo, Marine Insurance>
+<Port Congestion Management, connectedTo, Offshore Operations>
+<Port Congestion Management, connectedTo, Pollution Control>
+<Port Congestion Management, connectedTo, Route Planning>
+<Port Operations, connectedTo, Marine Insurance>
+<Port Operations, partOf, Maritime Security>
+<Route Planning, connectedTo, Container Tracking>
+<Route Planning, connectedTo, Crew Management>
+<Route Planning, connectedTo, Offshore Operations>
+<Terminal Management, partOf, Voyage Optimization>
+<Terminal Management, yes, Navigation>
+<Vessel Maintenance, connectedTo, Port Operations>
+<Vessel Maintenance, partOf, Maritime Security>
+<start, connectedTo, Port Congestion Management>
+<start, connectedTo, Route Planning>
diff --git a/train/mermaid/hard/mermaid_3.mmd b/train/mermaid/hard/mermaid_3.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..77702a45b51a60f51722bc58acf7996abc87cd86
--- /dev/null
+++ b/train/mermaid/hard/mermaid_3.mmd
@@ -0,0 +1,136 @@
+graph RL
+    N0([Fraud Check])
+    N1{Payment Gateway Integration}
+    N2[(Compliance Review)]
+    N3[Income Verification]
+    N4(Loan Processing)
+    N5([Wealth Management])
+    N6[Collateral Evaluation]
+    N7[Account Verification]
+    N8[/Account Closure/]
+    N9[Credit Scoring]
+    N10[Portfolio Management]
+    N11([Market Analysis])
+    N12[(Risk Assessment)]
+    N13[/Transaction Logging/]
+    N14[Budgeting Analysis]
+    N15[[Financial Advisory]]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Dispute Resolution
+        nest0_0[Blockchain Verification]
+        nest0_1(Securities Trading)
+    end
+    subgraph Investment Planning
+        nest1_0[Venture Capital Funding]
+        nest1_1(Cryptocurrency Exchange)
+        nest1_2[AML Screening]
+        nest1_3(Fund Disbursement)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> |monitors| N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    N9 --> nest0_0
+    nest0_1 -.-> N1
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N4 --> nest1_0
+    nest1_3 -.-> N6
+    N9 --> S0
+    S0 -.-> N14
+    S0 -.-> |collects| N11
+    S0 --> N15
+    N0 --> S1
+    S1 -.-> N5
+    S1 -.-> N16
+    N3 -.-> M0
+    N0 -.-> M0
+    M0 -.-> N6
+    N2 --> M1
+    N0 --> M1
+    N3 --> M1
+    M1 --> N14
+    style N0 fill:#F8BBD0,stroke:#E91E63
+    style N1 fill:#F8BBD0,stroke:#E91E63
+    style N2 fill:#F6F6F6,stroke:#CFCFCF
+    style N3 fill:#F6F6F6,stroke:#CFCFCF
+    style N4 fill:#F6F6F6,stroke:#CFCFCF
+    style N5 fill:#F8BBD0,stroke:#E91E63
+    style N6 fill:#F8BBD0,stroke:#E91E63
+    style N7 fill:#E8EAF6,stroke:#7986CB
+    style N8 fill:#F6F6F6,stroke:#CFCFCF
+    style N9 fill:#E8EAF6,stroke:#7986CB
+    style N10 fill:#F8BBD0,stroke:#E91E63
+    style N11 fill:#E8EAF6,stroke:#7986CB
+    style N12 fill:#F6F6F6,stroke:#CFCFCF
+    style N13 fill:#F6F6F6,stroke:#CFCFCF
+    style N14 fill:#E8EAF6,stroke:#7986CB
+    style N15 fill:#E8EAF6,stroke:#7986CB
+    style N16 fill:#F6F6F6,stroke:#CFCFCF
+    style S0 fill:#F6F6F6,stroke:#CFCFCF
+    style S1 fill:#F8BBD0,stroke:#E91E63
+    style M0 fill:#F6F6F6,stroke:#CFCFCF
+    style M1 fill:#F6F6F6,stroke:#CFCFCF
+    style nest0_0 fill:#F8BBD0,stroke:#E91E63
+    style nest0_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_0 fill:#F8BBD0,stroke:#E91E63
+    style nest1_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_2 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_3 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_30.txt b/train/mermaid/hard/mermaid_30.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e7570630e84adb4d274e2482734bee6429a7dd56
--- /dev/null
+++ b/train/mermaid/hard/mermaid_30.txt
@@ -0,0 +1,37 @@
+<Advisory Committee Meeting, connectedTo, Document Verification>
+<Advisory Committee Meeting, connectedTo, Graduation Approval>
+<Alumni Network Management, connectedTo, Student Feedback Collection>
+<Certificate Issuance, connectedTo, Grade Entry>
+<Course Material Preparation, licenses, Graduation Approval>
+<Disciplinary Action, connectedTo, Peer Tutoring>
+<Document Verification, connectedTo, Course Material Preparation>
+<Document Verification, connectedTo, Graduation Approval>
+<Document Verification, connectedTo, Orientation>
+<Grade Entry, connectedTo, Study Abroad Program>
+<Graduation Approval, connectedTo, Certificate Issuance>
+<Graduation Approval, connectedTo, Grade Entry>
+<Graduation Approval, connectedTo, Research Grant Application>
+<Graduation Approval, connectedTo, Student Feedback Collection>
+<Graduation Approval, connectedTo, Study Abroad Program>
+<Library Registration, partOf, Faculty Recruitment>
+<Library Registration, schedules, School Accreditation>
+<Orientation, partOf, Club Registration>
+<Orientation, recruits, Transcript Issuance>
+<Parent_Teacher Conference, learns, Student Enrollment>
+<Parent_Teacher Conference, partOf, Faculty Recruitment>
+<Peer Tutoring, connectedTo, Advisory Committee Meeting>
+<Peer Tutoring, connectedTo, Document Verification>
+<School Accreditation, connectedTo, Student Feedback Collection>
+<School Accreditation, partOf, Faculty Recruitment>
+<Special Education Support, connectedTo, Document Verification>
+<Special Education Support, partOf, Club Registration>
+<Student Enrollment, connectedTo, Library Registration>
+<Student Enrollment, partOf, Faculty Recruitment>
+<Student Feedback Collection, connectedTo, Parent_Teacher Conference>
+<Student Feedback Collection, connectedTo, Research Grant Application>
+<Study Abroad Program, connectedTo, Alumni Network Management>
+<Transcript Issuance, connectedTo, Special Education Support>
+<Transcript Issuance, partOf, Club Registration>
+<start, connectedTo, Disciplinary Action>
+<start, connectedTo, Graduation Approval>
+<start, teaches, Document Verification>
diff --git a/train/mermaid/hard/mermaid_300.mmd b/train/mermaid/hard/mermaid_300.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9b3bd01a72b7a6905230a9a1b9db5a22282f0334
--- /dev/null
+++ b/train/mermaid/hard/mermaid_300.mmd
@@ -0,0 +1,134 @@
+graph TD
+    N0([start])
+    N1[Fisheries Management]
+    N2{Subsea Cable Laying}
+    N3{Crew Management}
+    N4(Port Operations)
+    N5(Autonomous Vessels)
+    N6{Container Tracking}
+    N7[[Maritime Security]]
+    N8(Fleet Management)
+    N9[Ship Design]
+    N10(Vessel Maintenance)
+    N11[[Green Shipping Initiatives]]
+    N12[/Marine Research/]
+    N13(Shipbuilding)
+    N14(Terminal Management)
+    N15(Vessel Chartering)
+    N16{Marine Safety Inspection}
+    N17([Dry Docking])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Maritime Law Compliance
+        nest0_0[Cargo Loading]
+        nest0_1[Customs Clearance]
+        nest0_2(Route Planning)
+    end
+    subgraph Ship Registry
+        nest1_0[Fuel Consumption Optimization]
+        nest1_1(Freight Forwarding)
+        nest1_2[(Voyage Optimization)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> N17
+    nest0_0 --> nest0_1
+    nest0_1 --> |fuels| nest0_2
+    N15 -.-> nest0_0
+    nest0_2 -.-> |plans| N15
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 --> nest1_0
+    nest1_2 --> N8
+    N10 -.-> S0
+    S0 --> N12
+    S0 -.-> N13
+    N7 --> S1
+    S1 -.-> N15
+    S1 -.-> N16
+    S1 -.-> N10
+    S1 --> N17
+    N11 --> M1
+    N7 --> M1
+    N3 --> M1
+    M1 -.-> N17
+    style N0 fill:#FFE88D,stroke:#FFDA4E
+    style N1 fill:#EBEBEB,stroke:#E0E0E0
+    style N2 fill:#EBEBEB,stroke:#E0E0E0
+    style N3 fill:#FFE88D,stroke:#FFDA4E
+    style N4 fill:#EBEBEB,stroke:#E0E0E0
+    style N5 fill:#FFE88D,stroke:#FFDA4E
+    style N6 fill:#FFE88D,stroke:#FFDA4E
+    style N7 fill:#F9FBE7,stroke:#C0CA33
+    style N8 fill:#F9FBE7,stroke:#C0CA33
+    style N9 fill:#EBEBEB,stroke:#E0E0E0
+    style N10 fill:#FFE88D,stroke:#FFDA4E
+    style N11 fill:#F9FBE7,stroke:#C0CA33
+    style N12 fill:#EBEBEB,stroke:#E0E0E0
+    style N13 fill:#FFE88D,stroke:#FFDA4E
+    style N14 fill:#F9FBE7,stroke:#C0CA33
+    style N15 fill:#EBEBEB,stroke:#E0E0E0
+    style N16 fill:#FFE88D,stroke:#FFDA4E
+    style N17 fill:#F9FBE7,stroke:#C0CA33
+    style S0 fill:#EBEBEB,stroke:#E0E0E0
+    style S1 fill:#EBEBEB,stroke:#E0E0E0
+    style M1 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_2 fill:#F9FBE7,stroke:#C0CA33
+    style nest1_0 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_1 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_2 fill:#EBEBEB,stroke:#E0E0E0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_302.txt b/train/mermaid/hard/mermaid_302.txt
new file mode 100644
index 0000000000000000000000000000000000000000..450221560a0420ea4058ea90ae4342fca1358168
--- /dev/null
+++ b/train/mermaid/hard/mermaid_302.txt
@@ -0,0 +1,36 @@
+<Ballast Water Management, connectedTo, Fleet Management>
+<Container Tracking, connectedTo, Ballast Water Management>
+<Customs Clearance, connectedTo, Pilotage>
+<Customs Clearance, partOf, Green Shipping Initiatives>
+<Fisheries Management, connectedTo, Ballast Water Management>
+<Fisheries Management, connectedTo, Container Tracking>
+<Fisheries Management, connectedTo, Fleet Management>
+<Fisheries Management, connectedTo, end>
+<Fleet Management, connectedTo, end>
+<Hydrographic Surveying, connectedTo, Navigation>
+<Marine Research, connectedTo, Ballast Water Management>
+<Marine Research, connectedTo, Fleet Management>
+<Marine Research, connectedTo, Offshore Operations>
+<Marine Research, connectedTo, Port Congestion Management>
+<Marine Research, connectedTo, end>
+<Maritime Law Compliance, connectedTo, Pollution Control>
+<Maritime Law Compliance, connectedTo, end>
+<Navigation, connectedTo, Customs Clearance>
+<Navigation, connectedTo, Port Congestion Management>
+<Navigation, yes, Ship_to_Shore Communication>
+<Offshore Operations, connectedTo, Ship Registry>
+<Pilotage, connectedTo, Ship Registry>
+<Pilotage, partOf, Green Shipping Initiatives>
+<Pollution Control, connectedTo, Fisheries Management>
+<Port Congestion Management, connectedTo, Port Operations>
+<Port Operations, connectedTo, Fleet Management>
+<Port Operations, connectedTo, Vessel Chartering>
+<Ship Registry, connectedTo, Hydrographic Surveying>
+<Ship_to_Shore Communication, connectedTo, Shipbuilding>
+<Ship_to_Shore Communication, partOf, Voyage Optimization>
+<Shipbuilding, connectedTo, Marine Research>
+<Shipbuilding, partOf, Voyage Optimization>
+<Vessel Chartering, connectedTo, Vessel Maintenance>
+<Vessel Maintenance, connectedTo, Maritime Law Compliance>
+<start, connectedTo, Marine Research>
+<start, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_304.mmd b/train/mermaid/hard/mermaid_304.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f6592271da6b550eaded4a6b55e7676e8839729e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_304.mmd
@@ -0,0 +1,138 @@
+graph LR
+    N0([Digitalization of Shipping])
+    N1[Search and Rescue Coordination]
+    N2([Ship Registry])
+    N3[Dry Docking]
+    N4[/Shipbuilding/]
+    N5[[Salvage Operations]]
+    N6[Cargo Loading]
+    N7{Ballast Water Management}
+    N8(Voyage Optimization)
+    N9[[Container Tracking]]
+    N10[Port Operations]
+    N11[(Bunkering)]
+    N12[Terminal Management]
+    N13(Marine Safety Inspection)
+    N14([Ship Design])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Marine Insurance
+        nest0_0[(Green Shipping Initiatives)]
+        nest0_1(Navigation)
+        nest0_2[[Customs Clearance]]
+        nest0_3(Port Congestion Management)
+    end
+    subgraph Subsea Cable Laying
+        nest1_0[(Pilotage)]
+        nest1_1[[Crew Management]]
+    end
+    N0 --> |analyzes| N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |designs| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N2 --> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 --> nest1_1
+    N3 -.-> nest1_0
+    nest1_1 -.-> N6
+    N7 --> S0
+    S0 -.-> N9
+    S0 -.-> N14
+    N0 --> S1
+    S1 --> N14
+    S1 --> N6
+    N10 -.-> S2
+    S2 -.-> N13
+    S2 -.-> N12
+    S2 --> N14
+    N2 --> M0
+    N1 --> M0
+    N4 -.-> M0
+    M0 --> N7
+    N3 -.-> M1
+    N0 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N5
+    style N0 fill:#FFDCD6,stroke:#FFB2A5
+    style N1 fill:#E0F7FA,stroke:#00BCD4
+    style N2 fill:#E8EAF6,stroke:#5C6BC0
+    style N3 fill:#E8EAF6,stroke:#5C6BC0
+    style N4 fill:#FFDCD6,stroke:#FFB2A5
+    style N5 fill:#E0F7FA,stroke:#00BCD4
+    style N6 fill:#E8EAF6,stroke:#5C6BC0
+    style N7 fill:#E8EAF6,stroke:#5C6BC0
+    style N8 fill:#E8EAF6,stroke:#5C6BC0
+    style N9 fill:#FFDCD6,stroke:#FFB2A5
+    style N10 fill:#E0F7FA,stroke:#00BCD4
+    style N11 fill:#E8EAF6,stroke:#5C6BC0
+    style N12 fill:#E0F7FA,stroke:#00BCD4
+    style N13 fill:#FFDCD6,stroke:#FFB2A5
+    style N14 fill:#E0F7FA,stroke:#00BCD4
+    style S0 fill:#FFDCD6,stroke:#FFB2A5
+    style S1 fill:#E0F7FA,stroke:#00BCD4
+    style S2 fill:#E8EAF6,stroke:#5C6BC0
+    style M0 fill:#E8EAF6,stroke:#5C6BC0
+    style M1 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_1 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_2 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_3 fill:#FFDCD6,stroke:#FFB2A5
+    style nest1_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_1 fill:#E8EAF6,stroke:#5C6BC0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_304.txt b/train/mermaid/hard/mermaid_304.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d9ce180a3ba1a0f8e23acf6eb7a37a5745b5ff20
--- /dev/null
+++ b/train/mermaid/hard/mermaid_304.txt
@@ -0,0 +1,41 @@
+<Ballast Water Management, connectedTo, Container Tracking>
+<Ballast Water Management, connectedTo, Ship Design>
+<Ballast Water Management, connectedTo, Voyage Optimization>
+<Bunkering, connectedTo, Terminal Management>
+<Cargo Loading, designs, Ballast Water Management>
+<Container Tracking, connectedTo, Port Operations>
+<Crew Management, connectedTo, Cargo Loading>
+<Crew Management, partOf, Subsea Cable Laying>
+<Customs Clearance, connectedTo, Port Congestion Management>
+<Customs Clearance, partOf, Marine Insurance>
+<Digitalization of Shipping, analyzes, Search and Rescue Coordination>
+<Digitalization of Shipping, connectedTo, Cargo Loading>
+<Digitalization of Shipping, connectedTo, Salvage Operations>
+<Digitalization of Shipping, connectedTo, Ship Design>
+<Dry Docking, connectedTo, Pilotage>
+<Dry Docking, connectedTo, Salvage Operations>
+<Dry Docking, connectedTo, Shipbuilding>
+<Green Shipping Initiatives, connectedTo, Navigation>
+<Green Shipping Initiatives, partOf, Marine Insurance>
+<Marine Safety Inspection, connectedTo, Ship Design>
+<Navigation, connectedTo, Customs Clearance>
+<Navigation, partOf, Marine Insurance>
+<Pilotage, connectedTo, Crew Management>
+<Pilotage, partOf, Subsea Cable Laying>
+<Port Congestion Management, connectedTo, Port Operations>
+<Port Congestion Management, partOf, Marine Insurance>
+<Port Operations, connectedTo, Bunkering>
+<Port Operations, connectedTo, Marine Safety Inspection>
+<Port Operations, connectedTo, Ship Design>
+<Port Operations, connectedTo, Terminal Management>
+<Salvage Operations, connectedTo, Cargo Loading>
+<Search and Rescue Coordination, connectedTo, Ballast Water Management>
+<Search and Rescue Coordination, connectedTo, Ship Registry>
+<Ship Registry, connectedTo, Ballast Water Management>
+<Ship Registry, connectedTo, Dry Docking>
+<Ship Registry, connectedTo, Green Shipping Initiatives>
+<Ship Registry, connectedTo, Salvage Operations>
+<Shipbuilding, connectedTo, Ballast Water Management>
+<Shipbuilding, connectedTo, Salvage Operations>
+<Terminal Management, connectedTo, Marine Safety Inspection>
+<Voyage Optimization, connectedTo, Container Tracking>
diff --git a/train/mermaid/hard/mermaid_305.txt b/train/mermaid/hard/mermaid_305.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b5ca20874646d3db5834756a09ac9a703de98b01
--- /dev/null
+++ b/train/mermaid/hard/mermaid_305.txt
@@ -0,0 +1,39 @@
+<Asteroid Mining Feasibility, connectedTo, Microgravity Experiments>
+<Asteroid Mining Feasibility, connectedTo, Planetary Science Research>
+<Asteroid Mining Feasibility, connectedTo, Radiation Shielding Design>
+<Asteroid Mining Feasibility, connectedTo, Space Debris Mitigation>
+<Astrophysics Research, connectedTo, Exoplanet Discovery>
+<Astrophysics Research, connectedTo, Radiation Shielding Design>
+<Astrophysics Research, connectedTo, Re_entry Vehicle Design>
+<Astrophysics Research, connectedTo, end>
+<Autonomous Rendezvous and Docking, connectedTo, Orbital Mechanics>
+<Autonomous Rendezvous and Docking, connectedTo, Space Tourism Development>
+<Commercial Space Flight Regulation, connectedTo, Orbital Mechanics>
+<Data Acquisition, connectedTo, Autonomous Rendezvous and Docking>
+<Data Acquisition, connectedTo, Orbital Mechanics>
+<Data Acquisition, no, Space Tourism Development>
+<Exoplanet Discovery, connectedTo, Radiation Shielding Design>
+<Ground Station Operations, connectedTo, Data Acquisition>
+<Ground Station Operations, partOf, International Collaboration>
+<Interplanetary Trajectory Calculation, connectedTo, Space Habitat Development>
+<Interplanetary Trajectory Calculation, partOf, Robotics for Space Exploration>
+<Microgravity Experiments, connectedTo, Interplanetary Trajectory Calculation>
+<Microgravity Experiments, partOf, Robotics for Space Exploration>
+<New Space Technology Development, connectedTo, Planetary Science Research>
+<Orbital Mechanics, connectedTo, Spacecraft Control>
+<Planetary Science Research, connectedTo, Astrophysics Research>
+<Planetary Science Research, connectedTo, Exoplanet Discovery>
+<Planetary Science Research, connectedTo, Radiation Shielding Design>
+<Planetary Science Research, connectedTo, end>
+<Propellant Management, connectedTo, Ground Station Operations>
+<Propellant Management, partOf, International Collaboration>
+<Radiation Shielding Design, connectedTo, end>
+<Re_entry Vehicle Design, connectedTo, Propellant Management>
+<Re_entry Vehicle Design, partOf, International Collaboration>
+<Space Debris Mitigation, connectedTo, New Space Technology Development>
+<Space Habitat Development, connectedTo, end>
+<Space Habitat Development, partOf, Robotics for Space Exploration>
+<Space Tourism Development, connectedTo, Commercial Space Flight Regulation>
+<Spacecraft Control, connectedTo, Asteroid Mining Feasibility>
+<start, connectedTo, Data Acquisition>
+<start, yes, Space Tourism Development>
diff --git a/train/mermaid/hard/mermaid_307.txt b/train/mermaid/hard/mermaid_307.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3f3c4df23fa7e8f9569ba80d98da08acfb9d0f06
--- /dev/null
+++ b/train/mermaid/hard/mermaid_307.txt
@@ -0,0 +1,42 @@
+<Astronaut Training, connectedTo, Planetary Science Research>
+<Astrophysics Research, connectedTo, Mission Control Center Management>
+<Autonomous Rendezvous and Docking, connectedTo, Life Support Systems>
+<Commercial Space Flight Regulation, connectedTo, Interplanetary Trajectory Calculation>
+<Commercial Space Flight Regulation, partOf, Rocket Propulsion Development>
+<Ground Station Operations, advocates, Planetary Science Research>
+<Ground Station Operations, connectedTo, Astronaut Training>
+<Ground Station Operations, connectedTo, Autonomous Rendezvous and Docking>
+<Ground Station Operations, connectedTo, Life Support Systems>
+<Ground Station Operations, connectedTo, Orbital Mechanics>
+<In_Situ Resource Utilization, connectedTo, Launch Operations>
+<In_Situ Resource Utilization, connectedTo, Space Weather Forecasting>
+<International Collaboration, connectedTo, Spacecraft Control>
+<International Collaboration, partOf, Rocket Propulsion Development>
+<Interplanetary Trajectory Calculation, connectedTo, Orbital Mechanics>
+<Launch Operations, connectedTo, Ground Station Operations>
+<Launch Operations, connectedTo, International Collaboration>
+<Launch Vehicle Integration, connectedTo, Sample Return Missions>
+<Life Support Systems, connectedTo, Robotics for Space Exploration>
+<Microgravity Experiments, connectedTo, Autonomous Rendezvous and Docking>
+<Microgravity Experiments, connectedTo, Telemetry Monitoring>
+<Mission Control Center Management, connectedTo, Interplanetary Trajectory Calculation>
+<Mission Design, connectedTo, Robotics for Space Exploration>
+<Mission Design, partOf, Exoplanet Discovery>
+<New Space Technology Development, connectedTo, Mission Design>
+<New Space Technology Development, partOf, Exoplanet Discovery>
+<Orbital Mechanics, connectedTo, Astronaut Training>
+<Orbital Mechanics, connectedTo, Planetary Science Research>
+<Orbital Mechanics, connectedTo, Space Habitat Development>
+<Orbital Mechanics, educates, Re_entry Vehicle Design>
+<Planetary Science Research, connectedTo, Re_entry Vehicle Design>
+<Re_entry Vehicle Design, budgets, Space Habitat Development>
+<Robotics for Space Exploration, connectedTo, Astrophysics Research>
+<Sample Return Missions, connectedTo, Microgravity Experiments>
+<Satellite Deployment, connectedTo, New Space Technology Development>
+<Satellite Deployment, partOf, Exoplanet Discovery>
+<Space Weather Forecasting, connectedTo, Satellite Deployment>
+<Space Weather Forecasting, partOf, Exoplanet Discovery>
+<Spacecraft Control, connectedTo, Commercial Space Flight Regulation>
+<Spacecraft Control, partOf, Rocket Propulsion Development>
+<Telemetry Monitoring, connectedTo, Autonomous Rendezvous and Docking>
+<Telemetry Monitoring, connectedTo, In_Situ Resource Utilization>
diff --git a/train/mermaid/hard/mermaid_309.mmd b/train/mermaid/hard/mermaid_309.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2d001e7dec68d71aec6e48d0945df801d7bf36e8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_309.mmd
@@ -0,0 +1,114 @@
+graph LR
+    N0([Commercial Space Flight Regulation])
+    N1[Space Tourism Development]
+    N2[(Orbital Mechanics)]
+    N3[Launch Operations]
+    N4[[International Collaboration]]
+    N5[(Re_entry Vehicle Design)]
+    N6(Interplanetary Trajectory Calculation)
+    N7([Space Habitat Development])
+    N8(Microgravity Experiments)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Mission Design
+        nest0_0[Launch Vehicle Integration]
+        nest0_1[/Extravehicular Activity Planning/]
+        nest0_2[(Scientific Data Analysis)]
+    end
+    subgraph Propellant Management
+        nest1_0[Exoplanet Discovery]
+        nest1_1[Sample Return Missions]
+        nest1_2[Lunar Exploration]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N5 --> nest1_0
+    nest1_2 --> N7
+    N0 -.-> S0
+    S0 --> N8
+    S0 -.-> |simulates| N6
+    S0 -.-> N3
+    S0 --> N2
+    N1 --> S1
+    S1 --> N7
+    S1 -.-> N3
+    S1 -.-> N8
+    S1 -.-> N6
+    N4 --> S2
+    S2 -.-> N6
+    S2 --> N7
+    S2 -.-> N8
+    N0 -.-> M0
+    N4 -.-> M0
+    N5 -.-> M0
+    N1 --> M0
+    M0 -.-> N8
+    style N0 fill:#EBEBEB,stroke:#E0E0E0
+    style N1 fill:#E6EE9C,stroke:#CDDC39
+    style N2 fill:#FFFCE6,stroke:#FFF9AE
+    style N3 fill:#FFFCE6,stroke:#FFF9AE
+    style N4 fill:#E6EE9C,stroke:#CDDC39
+    style N5 fill:#E6EE9C,stroke:#CDDC39
+    style N6 fill:#FFFCE6,stroke:#FFF9AE
+    style N7 fill:#E6EE9C,stroke:#CDDC39
+    style N8 fill:#FFFCE6,stroke:#FFF9AE
+    style S0 fill:#E6EE9C,stroke:#CDDC39
+    style S1 fill:#FFFCE6,stroke:#FFF9AE
+    style S2 fill:#EBEBEB,stroke:#E0E0E0
+    style M0 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_0 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_2 fill:#EBEBEB,stroke:#E0E0E0
+    style nest1_0 fill:#FFFCE6,stroke:#FFF9AE
+    style nest1_1 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_2 fill:#FFFCE6,stroke:#FFF9AE
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CDDC39,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_31.txt b/train/mermaid/hard/mermaid_31.txt
new file mode 100644
index 0000000000000000000000000000000000000000..282a3d242a6e2d4187aaa00811c466f7ba8309c5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_31.txt
@@ -0,0 +1,41 @@
+<Alumni Network Management, connectedTo, Course Selection>
+<Alumni Network Management, partOf, Advisory Committee Meeting>
+<Attendance Tracking, connectedTo, Internship Coordination>
+<Attendance Tracking, submits, Faculty Recruitment>
+<Career Services, connectedTo, Study Abroad Program>
+<Career Services, partOf, Library Registration>
+<Certificate Issuance, assesses, Course Material Preparation>
+<Certificate Issuance, partOf, Library Registration>
+<Club Registration, connectedTo, Attendance Tracking>
+<Club Registration, connectedTo, Faculty Recruitment>
+<Club Registration, connectedTo, Internship Coordination>
+<Club Registration, connectedTo, Result Declaration>
+<Counseling Session, awards, Attendance Tracking>
+<Counseling Session, registers, Student Feedback Collection>
+<Course Material Preparation, connectedTo, Faculty Recruitment>
+<Course Selection, connectedTo, Thesis Submission>
+<Course Selection, partOf, Advisory Committee Meeting>
+<Curriculum Development, connectedTo, Alumni Network Management>
+<Curriculum Development, partOf, Advisory Committee Meeting>
+<Faculty Recruitment, connectedTo, Online Learning Platform Management>
+<Grade Entry, guides, Curriculum Development>
+<Grade Entry, partOf, Advisory Committee Meeting>
+<Internship Coordination, connectedTo, Course Material Preparation>
+<Internship Coordination, connectedTo, Grade Entry>
+<Parent_Teacher Conference, connectedTo, Career Services>
+<Parent_Teacher Conference, partOf, Library Registration>
+<Result Declaration, verifies, Attendance Tracking>
+<Student Application, connectedTo, Attendance Tracking>
+<Student Application, connectedTo, Club Registration>
+<Student Application, connectedTo, Course Material Preparation>
+<Student Application, connectedTo, Result Declaration>
+<Student Feedback Collection, connectedTo, Attendance Tracking>
+<Student Feedback Collection, connectedTo, Faculty Recruitment>
+<Student Feedback Collection, connectedTo, Parent_Teacher Conference>
+<Student Feedback Collection, connectedTo, Thesis Submission>
+<Study Abroad Program, connectedTo, Certificate Issuance>
+<Study Abroad Program, partOf, Library Registration>
+<Thesis Submission, connectedTo, Faculty Recruitment>
+<Thesis Submission, connectedTo, Student Application>
+<Transcript Issuance, connectedTo, Attendance Tracking>
+<Transcript Issuance, connectedTo, Counseling Session>
diff --git a/train/mermaid/hard/mermaid_310.mmd b/train/mermaid/hard/mermaid_310.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3a94530051f4dff8bce03245b01e54b011a0a3a1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_310.mmd
@@ -0,0 +1,102 @@
+graph LR
+    N0([Deep Space Communications])
+    N1([Propellant Management])
+    N2[Payload Development]
+    N3[/In_Situ Resource Utilization/]
+    N4(Re_entry Vehicle Design)
+    N5{Space Station Operations}
+    N6{Orbital Mechanics}
+    N7[[Launch Vehicle Integration]]
+    N8(Mars Mission Planning)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Extravehicular Activity Planning
+        nest0_0{Scientific Data Analysis}
+        nest0_1[Interplanetary Trajectory Calculation]
+        nest0_2[[Life Support Systems]]
+    end
+    subgraph Astronaut Training
+        nest1_0[Exoplanet Discovery]
+        nest1_1[/Rocket Propulsion Development/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    nest0_0 -.-> |partners| nest0_1
+    nest0_1 -.-> nest0_2
+    N3 --> nest0_0
+    nest0_2 -.-> N5
+    nest1_0 --> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 --> N8
+    N3 -.-> S0
+    S0 --> N6
+    S0 --> N5
+    N4 --> S1
+    S1 -.-> N8
+    S1 --> N7
+    S1 --> |funds| N6
+    N3 -.-> S2
+    S2 -.-> N8
+    S2 -.-> N5
+    S2 -.-> |repairs| N6
+    N2 --> M2
+    N0 --> M2
+    N4 --> |budgets| M2
+    M2 --> N7
+    style N0 fill:#DDCEDD,stroke:#AF56A6
+    style N1 fill:#E9F7E8,stroke:#6EB76D
+    style N2 fill:#E9F7E8,stroke:#6EB76D
+    style N3 fill:#E9F7E8,stroke:#6EB76D
+    style N4 fill:#E9F7E8,stroke:#6EB76D
+    style N5 fill:#FFE0B2,stroke:#FF9800
+    style N6 fill:#DDCEDD,stroke:#AF56A6
+    style N7 fill:#FFE0B2,stroke:#FF9800
+    style N8 fill:#FFE0B2,stroke:#FF9800
+    style S0 fill:#FFE0B2,stroke:#FF9800
+    style S1 fill:#FFE0B2,stroke:#FF9800
+    style S2 fill:#FFE0B2,stroke:#FF9800
+    style M2 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_0 fill:#FFE0B2,stroke:#FF9800
+    style nest0_1 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_2 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_0 fill:#FFE0B2,stroke:#FF9800
+    style nest1_1 fill:#FFE0B2,stroke:#FF9800
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_310.txt b/train/mermaid/hard/mermaid_310.txt
new file mode 100644
index 0000000000000000000000000000000000000000..46cd6147e43fb98ce4c10e22f55a3e61ed8f4c3c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_310.txt
@@ -0,0 +1,30 @@
+<Deep Space Communications, connectedTo, Launch Vehicle Integration>
+<Deep Space Communications, connectedTo, Propellant Management>
+<Exoplanet Discovery, connectedTo, Rocket Propulsion Development>
+<Exoplanet Discovery, partOf, Astronaut Training>
+<In_Situ Resource Utilization, connectedTo, Mars Mission Planning>
+<In_Situ Resource Utilization, connectedTo, Orbital Mechanics>
+<In_Situ Resource Utilization, connectedTo, Re_entry Vehicle Design>
+<In_Situ Resource Utilization, connectedTo, Scientific Data Analysis>
+<In_Situ Resource Utilization, connectedTo, Space Station Operations>
+<In_Situ Resource Utilization, repairs, Orbital Mechanics>
+<Interplanetary Trajectory Calculation, connectedTo, Life Support Systems>
+<Interplanetary Trajectory Calculation, partOf, Extravehicular Activity Planning>
+<Launch Vehicle Integration, connectedTo, Mars Mission Planning>
+<Life Support Systems, connectedTo, Space Station Operations>
+<Life Support Systems, partOf, Extravehicular Activity Planning>
+<Orbital Mechanics, connectedTo, Launch Vehicle Integration>
+<Payload Development, connectedTo, Exoplanet Discovery>
+<Payload Development, connectedTo, In_Situ Resource Utilization>
+<Payload Development, connectedTo, Launch Vehicle Integration>
+<Propellant Management, connectedTo, Payload Development>
+<Re_entry Vehicle Design, budgets, Launch Vehicle Integration>
+<Re_entry Vehicle Design, connectedTo, Launch Vehicle Integration>
+<Re_entry Vehicle Design, connectedTo, Mars Mission Planning>
+<Re_entry Vehicle Design, connectedTo, Space Station Operations>
+<Re_entry Vehicle Design, funds, Orbital Mechanics>
+<Rocket Propulsion Development, connectedTo, Mars Mission Planning>
+<Rocket Propulsion Development, partOf, Astronaut Training>
+<Scientific Data Analysis, partOf, Extravehicular Activity Planning>
+<Scientific Data Analysis, partners, Interplanetary Trajectory Calculation>
+<Space Station Operations, connectedTo, Orbital Mechanics>
diff --git a/train/mermaid/hard/mermaid_312.mmd b/train/mermaid/hard/mermaid_312.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fddd6420e2879ffc03b4cadc7d6557943ecf66a6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_312.mmd
@@ -0,0 +1,150 @@
+graph BT
+    N0([Spacecraft Control])
+    N1[(Orbital Mechanics)]
+    N2[[Autonomous Rendezvous and Docking]]
+    N3([Ground Station Operations])
+    N4[/Telemetry Monitoring/]
+    N5[Astronaut Training]
+    N6[Robotics for Space Exploration]
+    N7([Radiation Shielding Design])
+    N8[Commercial Space Flight Regulation]
+    N9[(In_Situ Resource Utilization)]
+    N10[Space Habitat Development]
+    N11([Planetary Science Research])
+    N12[Astrophysics Research]
+    N13[Mars Mission Planning]
+    N14[/Re_entry Vehicle Design/]
+    N15[[Space Debris Mitigation]]
+    N16([Microgravity Experiments])
+    N17([New Space Technology Development])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Payload Development
+        nest0_0(Scientific Data Analysis)
+        nest0_1[Launch Operations]
+    end
+    subgraph Deep Space Communications
+        nest1_0[Satellite Deployment]
+        nest1_1(Lunar Exploration)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    N5 --> nest0_0
+    nest0_1 -.-> N13
+    nest1_0 -.-> nest1_1
+    N3 -.-> nest1_0
+    nest1_1 --> N8
+    N8 -.-> S0
+    S0 --> N17
+    S0 --> N13
+    N14 --> S1
+    S1 -.-> N16
+    S1 --> N17
+    N13 -.-> S2
+    S2 --> N15
+    S2 --> N17
+    S2 -.-> N16
+    N5 --> M0
+    N6 --> M0
+    M0 -.-> N12
+    N0 -.-> M1
+    N6 --> M1
+    N9 -.-> M1
+    M1 -.-> N15
+    N1 -.-> M2
+    N3 -.-> M2
+    N4 --> M2
+    M2 -.-> N6
+    style N0 fill:#FFF0CC,stroke:#FFCC80
+    style N1 fill:#F1F8E9,stroke:#388E3C
+    style N2 fill:#E8F0FF,stroke:#A2D0FF
+    style N3 fill:#F1F8E9,stroke:#388E3C
+    style N4 fill:#F1F8E9,stroke:#388E3C
+    style N5 fill:#FFF0CC,stroke:#FFCC80
+    style N6 fill:#F1F8E9,stroke:#388E3C
+    style N7 fill:#F1F8E9,stroke:#388E3C
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#E8F0FF,stroke:#A2D0FF
+    style N10 fill:#F1F8E9,stroke:#388E3C
+    style N11 fill:#E8F0FF,stroke:#A2D0FF
+    style N12 fill:#FFF0CC,stroke:#FFCC80
+    style N13 fill:#E8F0FF,stroke:#A2D0FF
+    style N14 fill:#F1F8E9,stroke:#388E3C
+    style N15 fill:#E8F0FF,stroke:#A2D0FF
+    style N16 fill:#E8F0FF,stroke:#A2D0FF
+    style N17 fill:#E8F0FF,stroke:#A2D0FF
+    style S0 fill:#FFF0CC,stroke:#FFCC80
+    style S1 fill:#FFF0CC,stroke:#FFCC80
+    style S2 fill:#F1F8E9,stroke:#388E3C
+    style M0 fill:#FFF0CC,stroke:#FFCC80
+    style M1 fill:#FFF0CC,stroke:#FFCC80
+    style M2 fill:#FFF0CC,stroke:#FFCC80
+    style nest0_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_1 fill:#F1F8E9,stroke:#388E3C
+    style nest1_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_1 fill:#F1F8E9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_313.mmd b/train/mermaid/hard/mermaid_313.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..612d1cddac24e0b848a965e261952aa3daca2a6c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_313.mmd
@@ -0,0 +1,118 @@
+graph TD
+    N0([start])
+    N1(Satellite Data Interpretation)
+    N2([Ocean Current Analysis])
+    N3(Biodiversity Impact Assessment)
+    N4([Mitigation Technology Evaluation])
+    N5[[Public Engagement on Climate]]
+    N6[[Arctic and Antarctic Research]]
+    N7{Water Resource Management under Climate Change}
+    N8[Glacier Mass Balance Monitoring]
+    N9[/Carbon Cycle Research/]
+    N10(Greenhouse Gas Measurement)
+    N11[Remote Sensing for Climate]
+    N12([Climate Resilient Agriculture])
+    N13(Climate Education Programs)
+    N14[Cloud Formation Research]
+    N15[Climate Policy Analysis]
+    N16[(Data Collection)]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Environmental Justice Study
+        nest0_0([Adaptation Strategy Development])
+        nest0_1(Paleoclimate Reconstruction)
+        nest0_2[/Carbon Sequestration Technologies/]
+        nest0_3{Extreme Weather Event Analysis}
+    end
+    subgraph Climate Modeling
+        nest1_0{Ice Sheet Dynamics}
+        nest1_1{Ecological Footprint Calculation}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 -.-> |no| N15
+    N15 -.-> N16
+    N16 -.-> N17
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N9 -.-> nest0_0
+    nest0_3 -.-> N7
+    nest1_0 -.-> nest1_1
+    N10 --> nest1_0
+    nest1_1 -.-> N6
+    N13 -.-> S0
+    S0 --> N16
+    S0 --> N17
+    S0 -.-> N15
+    N8 --> S1
+    S1 -.-> |no| N11
+    S1 -.-> N16
+    N3 --> M0
+    N4 --> M0
+    N6 -.-> M0
+    M0 --> N13
+    N2 -.-> M1
+    N0 -.-> M1
+    N5 -.-> M1
+    M1 --> N7
+    style S0 fill:#FCFCE7,stroke:#DCE775
+    style S1 fill:#FCFCE7,stroke:#DCE775
+    style M0 fill:#FCFCE7,stroke:#DCE775
+    style M1 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#66BB6A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_317.mmd b/train/mermaid/hard/mermaid_317.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..031bb3fb0e4a392ebb20074c49259698b49477c2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_317.mmd
@@ -0,0 +1,108 @@
+graph LR
+    N0([Climate Modeling])
+    N1(Environmental Justice Study)
+    N2(Paleoclimate Reconstruction)
+    N3(Green Technology Incubation)
+    N4(Carbon Sequestration Technologies)
+    N5[/Biodiversity Impact Assessment/]
+    N6(Climate Education Programs)
+    N7[Arctic and Antarctic Research]
+    N8[Extreme Weather Event Analysis]
+    N9{Remote Sensing for Climate}
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Sea Level Rise Projection
+        nest0_0(Climate Change Vulnerability Assessment)
+        nest0_1[Ocean Current Analysis]
+    end
+    subgraph Renewable Energy Potential Assessment
+        nest1_0[/Flood Risk Assessment/]
+        nest1_1[/Mitigation Technology Evaluation/]
+        nest1_2(Cloud Formation Research)
+        nest1_3[Data Collection]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    nest0_0 -.-> nest0_1
+    N1 --> nest0_0
+    nest0_1 --> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N3 --> nest1_0
+    nest1_3 -.-> N1
+    N6 -.-> S0
+    S0 --> N9
+    S0 --> N8
+    N2 --> S1
+    S1 -.-> N9
+    S1 --> N6
+    S1 --> N7
+    N2 -.-> M1
+    N1 -.-> M1
+    N3 --> M1
+    M1 --> N8
+    N1 -.-> M2
+    N5 --> M2
+    M2 -.-> N7
+    style N0 fill:#F0F0F0,stroke:#D2D2D2
+    style N1 fill:#F2E6F5,stroke:#CB9BE1
+    style N2 fill:#F0F0F0,stroke:#D2D2D2
+    style N3 fill:#F2E6F5,stroke:#CB9BE1
+    style N4 fill:#F2E6F5,stroke:#CB9BE1
+    style N5 fill:#F2E6F5,stroke:#CB9BE1
+    style N6 fill:#F2E6F5,stroke:#CB9BE1
+    style N7 fill:#F0F0F0,stroke:#D2D2D2
+    style N8 fill:#FFCCBC,stroke:#FF5722
+    style N9 fill:#FFCCBC,stroke:#FF5722
+    style S0 fill:#F0F0F0,stroke:#D2D2D2
+    style S1 fill:#F2E6F5,stroke:#CB9BE1
+    style M1 fill:#F2E6F5,stroke:#CB9BE1
+    style M2 fill:#FFCCBC,stroke:#FF5722
+    style nest0_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_1 fill:#FFCCBC,stroke:#FF5722
+    style nest1_2 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_3 fill:#F0F0F0,stroke:#D2D2D2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF5722,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_317.txt b/train/mermaid/hard/mermaid_317.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5803bb056bb673792c4df6283351dd1356efda2b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_317.txt
@@ -0,0 +1,33 @@
+<Arctic and Antarctic Research, connectedTo, Extreme Weather Event Analysis>
+<Biodiversity Impact Assessment, connectedTo, Arctic and Antarctic Research>
+<Biodiversity Impact Assessment, connectedTo, Climate Education Programs>
+<Carbon Sequestration Technologies, connectedTo, Biodiversity Impact Assessment>
+<Climate Change Vulnerability Assessment, connectedTo, Ocean Current Analysis>
+<Climate Change Vulnerability Assessment, partOf, Sea Level Rise Projection>
+<Climate Education Programs, connectedTo, Arctic and Antarctic Research>
+<Climate Education Programs, connectedTo, Extreme Weather Event Analysis>
+<Climate Education Programs, connectedTo, Remote Sensing for Climate>
+<Climate Modeling, connectedTo, Environmental Justice Study>
+<Cloud Formation Research, connectedTo, Data Collection>
+<Cloud Formation Research, partOf, Renewable Energy Potential Assessment>
+<Data Collection, connectedTo, Environmental Justice Study>
+<Data Collection, partOf, Renewable Energy Potential Assessment>
+<Environmental Justice Study, connectedTo, Arctic and Antarctic Research>
+<Environmental Justice Study, connectedTo, Climate Change Vulnerability Assessment>
+<Environmental Justice Study, connectedTo, Extreme Weather Event Analysis>
+<Environmental Justice Study, connectedTo, Paleoclimate Reconstruction>
+<Extreme Weather Event Analysis, connectedTo, Remote Sensing for Climate>
+<Flood Risk Assessment, connectedTo, Mitigation Technology Evaluation>
+<Flood Risk Assessment, partOf, Renewable Energy Potential Assessment>
+<Green Technology Incubation, connectedTo, Carbon Sequestration Technologies>
+<Green Technology Incubation, connectedTo, Extreme Weather Event Analysis>
+<Green Technology Incubation, connectedTo, Flood Risk Assessment>
+<Mitigation Technology Evaluation, connectedTo, Cloud Formation Research>
+<Mitigation Technology Evaluation, partOf, Renewable Energy Potential Assessment>
+<Ocean Current Analysis, connectedTo, Paleoclimate Reconstruction>
+<Ocean Current Analysis, partOf, Sea Level Rise Projection>
+<Paleoclimate Reconstruction, connectedTo, Arctic and Antarctic Research>
+<Paleoclimate Reconstruction, connectedTo, Climate Education Programs>
+<Paleoclimate Reconstruction, connectedTo, Extreme Weather Event Analysis>
+<Paleoclimate Reconstruction, connectedTo, Green Technology Incubation>
+<Paleoclimate Reconstruction, connectedTo, Remote Sensing for Climate>
diff --git a/train/mermaid/hard/mermaid_318.mmd b/train/mermaid/hard/mermaid_318.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3c90a378e0c87dc439b0239395d00c663855f53f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_318.mmd
@@ -0,0 +1,131 @@
+graph RL
+    N0([start])
+    N1(Environmental Justice Study)
+    N2[Ecosystem Response Modeling]
+    N3[/Climate Finance Tracking/]
+    N4[Indigenous Knowledge Integration]
+    N5(Sea Level Rise Projection)
+    N6(Public Engagement on Climate)
+    N7[/Satellite Data Interpretation/]
+    N8[[Ice Sheet Dynamics]]
+    N9{Flood Risk Assessment}
+    N10([Climate Change Vulnerability Assessment])
+    N11[Ocean Current Analysis]
+    N12[Carbon Cycle Research]
+    N13[Adaptation Strategy Development]
+    N14{Climate Impact Assessment}
+    N15{Aerosol Impact Assessment}
+    N16(Greenhouse Gas Measurement)
+    N17{Water Resource Management under Climate Change}
+    N18([Paleoclimate Reconstruction])
+    N19([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Biodiversity Impact Assessment
+        nest0_0([Climate Policy Analysis])
+        nest0_1[(Carbon Sequestration Technologies)]
+    end
+    subgraph Arctic and Antarctic Research
+        nest1_0[Data Collection]
+        nest1_1(Mitigation Technology Evaluation)
+        nest1_2(Permafrost Thaw Assessment)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> |no| N17
+    N17 --> N18
+    N18 --> N19
+    nest0_0 -.-> nest0_1
+    N13 --> nest0_0
+    nest0_1 --> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N2 -.-> nest1_0
+    nest1_2 -.-> |yes| N11
+    N11 -.-> S0
+    S0 -.-> N17
+    S0 -.-> N15
+    S0 -.-> N14
+    N2 -.-> S1
+    S1 -.-> N8
+    S1 --> |yes| N18
+    S1 --> N6
+    N8 -.-> S2
+    S2 --> N19
+    S2 --> N14
+    N6 --> M0
+    N1 -.-> M0
+    N4 -.-> M0
+    N2 --> M0
+    M0 -.-> N9
+    N0 -.-> M1
+    N4 --> M1
+    M1 --> N18
+    style S0 fill:#BBDEFB,stroke:#2196F3
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style S2 fill:#FCFCE7,stroke:#DCE775
+    style M0 fill:#FCFCE7,stroke:#DCE775
+    style M1 fill:#E8F0FF,stroke:#A2D0FF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#A2D0FF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_319.mmd b/train/mermaid/hard/mermaid_319.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..88c4bcfa57bf9867ae915bc9850365182fbe2455
--- /dev/null
+++ b/train/mermaid/hard/mermaid_319.mmd
@@ -0,0 +1,156 @@
+graph LR
+    N0([Satellite Data Interpretation])
+    N1[(Data Collection)]
+    N2[Environmental Justice Study]
+    N3{Biodiversity Impact Assessment}
+    N4{Flood Risk Assessment}
+    N5[[Drought Monitoring and Forecasting]]
+    N6([Cloud Formation Research])
+    N7[Water Resource Management under Climate Change]
+    N8(Climate Finance Tracking)
+    N9[(Extreme Weather Event Analysis)]
+    N10([Climate Policy Analysis])
+    N11([Permafrost Thaw Assessment])
+    N12{Aerosol Impact Assessment}
+    N13[Climate Modeling]
+    N14(Carbon Cycle Research)
+    N15(Adaptation Strategy Development)
+    N16[Renewable Energy Potential Assessment]
+    N17([Green Technology Incubation])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Arctic and Antarctic Research
+        nest0_0[Mitigation Technology Evaluation]
+        nest0_1(International Climate Negotiation)
+    end
+    subgraph Remote Sensing for Climate
+        nest1_0[Paleoclimate Reconstruction]
+        nest1_1{Ecological Footprint Calculation}
+        nest1_2(Carbon Sequestration Technologies)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> |advises| N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> |resilience| N13
+    N13 -.-> |simulates| N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 --> N17
+    nest0_0 -.-> nest0_1
+    N2 --> nest0_0
+    nest0_1 --> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N8 -.-> nest1_0
+    nest1_2 -.-> N11
+    N0 -.-> S0
+    S0 --> N2
+    S0 -.-> N8
+    S0 -.-> N10
+    N13 --> S1
+    S1 --> |monitors| N15
+    S1 --> N16
+    S1 --> |educates| N17
+    N4 -.-> S2
+    S2 -.-> N16
+    S2 --> N17
+    S2 --> N7
+    N0 -.-> M0
+    N1 -.-> M0
+    M0 --> N4
+    N0 -.-> |policies| M1
+    N8 --> M1
+    N3 --> M1
+    M1 --> N11
+    N7 --> M2
+    N10 --> |strategies| M2
+    M2 --> N13
+    style N0 fill:#C5CAE9,stroke:#3F51B5
+    style N1 fill:#C5CAE9,stroke:#3F51B5
+    style N2 fill:#D1C4E9,stroke:#7E57C2
+    style N3 fill:#FFF6D9,stroke:#FFCC7A
+    style N4 fill:#C5CAE9,stroke:#3F51B5
+    style N5 fill:#FFF6D9,stroke:#FFCC7A
+    style N6 fill:#D1C4E9,stroke:#7E57C2
+    style N7 fill:#D1C4E9,stroke:#7E57C2
+    style N8 fill:#FFF6D9,stroke:#FFCC7A
+    style N9 fill:#FFF6D9,stroke:#FFCC7A
+    style N10 fill:#C5CAE9,stroke:#3F51B5
+    style N11 fill:#C5CAE9,stroke:#3F51B5
+    style N12 fill:#FFF6D9,stroke:#FFCC7A
+    style N13 fill:#C5CAE9,stroke:#3F51B5
+    style N14 fill:#D1C4E9,stroke:#7E57C2
+    style N15 fill:#FFF6D9,stroke:#FFCC7A
+    style N16 fill:#D1C4E9,stroke:#7E57C2
+    style N17 fill:#FFF6D9,stroke:#FFCC7A
+    style S0 fill:#D1C4E9,stroke:#7E57C2
+    style S1 fill:#C5CAE9,stroke:#3F51B5
+    style S2 fill:#C5CAE9,stroke:#3F51B5
+    style M0 fill:#FFF6D9,stroke:#FFCC7A
+    style M1 fill:#FFF6D9,stroke:#FFCC7A
+    style M2 fill:#C5CAE9,stroke:#3F51B5
+    style nest0_0 fill:#C5CAE9,stroke:#3F51B5
+    style nest0_1 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_0 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_1 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_2 fill:#C5CAE9,stroke:#3F51B5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC7A,stroke-width:2px,fill:none;
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+    linkStyle 20 stroke:#FFCC7A,stroke-width:2px,fill:none;
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+    linkStyle 24 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7E57C2,stroke-width:2px,fill:none;
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+    linkStyle 30 stroke:#3F51B5,stroke-width:2px,fill:none;
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+    linkStyle 35 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#3F51B5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_321.mmd b/train/mermaid/hard/mermaid_321.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ad1e5a18a1e29d8ef3f5b0587f7c333c64aac45b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_321.mmd
@@ -0,0 +1,118 @@
+graph BT
+    N0([Mesoscale Meteorology])
+    N1{Storm Tracking}
+    N2([Atmospheric Data Collection])
+    N3[(Numerical Weather Prediction)]
+    N4[Climate Change Impact Study]
+    N5(Snowfall Measurement)
+    N6(Meteorological Station Maintenance)
+    N7[[Nowcasting]]
+    N8[[Severe Weather Warning]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Agricultural Weather Advisory
+        nest0_0[/Humidity Sensing/]
+        nest0_1[/Arctic Weather Research/]
+        nest0_2[Marine Weather Forecast]
+    end
+    subgraph Synoptic Chart Analysis
+        nest1_0[Cloud Observation]
+        nest1_1{Tornado Watch or Warning}
+        nest1_2{Flood Prediction}
+        nest1_3{Ocean_Atmosphere Interaction Study}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> |forecasts| N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N6 -.-> nest0_0
+    nest0_2 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N4 -.-> nest1_0
+    nest1_3 -.-> N6
+    N2 -.-> S0
+    S0 --> N8
+    S0 -.-> N7
+    S0 -.-> N6
+    N1 -.-> S1
+    S1 --> N5
+    S1 --> N8
+    S1 -.-> N3
+    N5 --> S2
+    S2 -.-> N7
+    S2 -.-> N8
+    N1 --> M1
+    N3 --> M1
+    N0 --> M1
+    M1 --> N5
+    N3 -.-> M2
+    N2 -.-> M2
+    M2 -.-> N5
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#E8F0FF,stroke:#A2D0FF
+    style N2 fill:#E8F0FF,stroke:#A2D0FF
+    style N3 fill:#EDF5F3,stroke:#A1D7CD
+    style N4 fill:#F5F5F5,stroke:#BDBDBD
+    style N5 fill:#E8F0FF,stroke:#A2D0FF
+    style N6 fill:#F5F5F5,stroke:#BDBDBD
+    style N7 fill:#EDF5F3,stroke:#A1D7CD
+    style N8 fill:#F5F5F5,stroke:#BDBDBD
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#E8F0FF,stroke:#A2D0FF
+    style S2 fill:#EDF5F3,stroke:#A1D7CD
+    style M1 fill:#E8F0FF,stroke:#A2D0FF
+    style M2 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_2 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_1 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_2 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_3 fill:#E8F0FF,stroke:#A2D0FF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_322.txt b/train/mermaid/hard/mermaid_322.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0754abb8770810e95666c8519dcfea80b6b8784f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_322.txt
@@ -0,0 +1,29 @@
+<Agricultural Weather Advisory, connectedTo, Marine Weather Forecast>
+<Agricultural Weather Advisory, partOf, Snowfall Measurement>
+<Air Quality Forecasting, connectedTo, Drought Monitoring>
+<Air Quality Forecasting, connectedTo, Lightning Detection>
+<Aviation Weather Briefing, connectedTo, Hurricane Trajectory Modeling>
+<Climate Modeling, connectedTo, Ocean_Atmosphere Interaction Study>
+<Climate Modeling, partOf, Wind Speed and Direction>
+<Drought Monitoring, connectedTo, Cloud Observation>
+<Hurricane Trajectory Modeling, connectedTo, Numerical Weather Prediction>
+<Lightning Detection, connectedTo, Drought Monitoring>
+<Lightning Detection, connectedTo, Numerical Weather Prediction>
+<Lightning Detection, connectedTo, Temperature Monitoring>
+<Lightning Detection, yes, Seasonal Outlook Preparation>
+<Marine Weather Forecast, connectedTo, Numerical Weather Prediction>
+<Marine Weather Forecast, partOf, Snowfall Measurement>
+<Meteorological Station Maintenance, connectedTo, Agricultural Weather Advisory>
+<Meteorological Station Maintenance, connectedTo, Air Quality Forecasting>
+<Meteorological Station Maintenance, connectedTo, Drought Monitoring>
+<Numerical Weather Prediction, connectedTo, Cloud Observation>
+<Numerical Weather Prediction, connectedTo, Drought Monitoring>
+<Numerical Weather Prediction, connectedTo, Temperature Monitoring>
+<Ocean_Atmosphere Interaction Study, connectedTo, Numerical Weather Prediction>
+<Ocean_Atmosphere Interaction Study, partOf, Wind Speed and Direction>
+<Seasonal Outlook Preparation, connectedTo, Aviation Weather Briefing>
+<Seasonal Outlook Preparation, connectedTo, Severe Weather Warning>
+<Severe Weather Warning, connectedTo, Climate Modeling>
+<Severe Weather Warning, partOf, Wind Speed and Direction>
+<Temperature Monitoring, connectedTo, Drought Monitoring>
+<start, connectedTo, Meteorological Station Maintenance>
diff --git a/train/mermaid/hard/mermaid_323.mmd b/train/mermaid/hard/mermaid_323.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..632b27239c82b0c58f5b98b4a9f7e9d22da53c19
--- /dev/null
+++ b/train/mermaid/hard/mermaid_323.mmd
@@ -0,0 +1,112 @@
+graph LR
+    N0([start])
+    N1{Nowcasting}
+    N2(Snowfall Measurement)
+    N3[[Marine Weather Forecast]]
+    N4[Weather Forecasting]
+    N5[Agricultural Weather Advisory]
+    N6(Mesoscale Meteorology)
+    N7([Wind Speed and Direction])
+    N8[Tropical Cyclone Analysis]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Pollution Dispersion Modeling
+        nest0_0[Upper Air Chart Analysis]
+        nest0_1(Radar Imaging)
+    end
+    subgraph Seasonal Outlook Preparation
+        nest1_0(Air Quality Forecasting)
+        nest1_1(Atmospheric Data Collection)
+        nest1_2[Severe Weather Warning]
+        nest1_3[Humidity Sensing]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    nest0_0 --> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 -.-> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> N1
+    N4 -.-> S0
+    S0 --> N6
+    S0 --> N8
+    N4 --> S1
+    S1 --> N6
+    S1 --> N8
+    N2 --> M0
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N4
+    N2 --> M1
+    N1 -.-> M1
+    M1 -.-> N5
+    N2 --> M2
+    N0 -.-> M2
+    N5 -.-> M2
+    M2 -.-> N8
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#CADEDE,stroke:#94C0C0
+    style N2 fill:#F0F4C3,stroke:#AED581
+    style N3 fill:#F0F4C3,stroke:#AED581
+    style N4 fill:#F0F4C3,stroke:#AED581
+    style N5 fill:#CADEDE,stroke:#94C0C0
+    style N6 fill:#FFF9D4,stroke:#FFE69C
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style N8 fill:#FFF9D4,stroke:#FFE69C
+    style S0 fill:#FFF9D4,stroke:#FFE69C
+    style S1 fill:#FFF9D4,stroke:#FFE69C
+    style M0 fill:#CADEDE,stroke:#94C0C0
+    style M1 fill:#F0F4C3,stroke:#AED581
+    style M2 fill:#CADEDE,stroke:#94C0C0
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#CADEDE,stroke:#94C0C0
+    style nest1_1 fill:#FFF9D4,stroke:#FFE69C
+    style nest1_2 fill:#F0F4C3,stroke:#AED581
+    style nest1_3 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_324.mmd b/train/mermaid/hard/mermaid_324.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ea117b30814d0dc3f99fafe0233fa14e74648c0d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_324.mmd
@@ -0,0 +1,116 @@
+graph RL
+    N0([start])
+    N1[(Numerical Weather Prediction)]
+    N2[/Mesoscale Meteorology/]
+    N3(Severe Weather Warning)
+    N4[[Tropical Cyclone Analysis]]
+    N5[Pollution Dispersion Modeling]
+    N6[Atmospheric Data Collection]
+    N7[/Climate Data Archiving/]
+    N8[Humidity Sensing]
+    N9[Arctic Weather Research]
+    N10[Tornado Watch or Warning]
+    N11[(Temperature Monitoring)]
+    N12[[Wind Speed and Direction]]
+    N13([Air Quality Forecasting])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Storm Tracking
+        nest0_0[Hurricane Trajectory Modeling]
+        nest0_1[Meteorological Instrument Calibration]
+    end
+    subgraph Flood Prediction
+        nest1_0[Meteorological Station Maintenance]
+        nest1_1(Public Weather Briefing)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    nest0_0 -.-> nest0_1
+    N3 --> nest0_0
+    nest0_1 -.-> N3
+    nest1_0 --> nest1_1
+    N4 -.-> nest1_0
+    nest1_1 --> N9
+    N7 --> S0
+    S0 -.-> N9
+    S0 --> N13
+    S0 --> N12
+    N4 --> S1
+    S1 --> N11
+    S1 --> N12
+    N3 --> M0
+    N0 -.-> M0
+    N1 -.-> M0
+    M0 -.-> N6
+    N5 --> M1
+    N0 --> M1
+    M1 -.-> N13
+    style N0 fill:#D0EFEE,stroke:#73C6BC
+    style N1 fill:#D0EFEE,stroke:#73C6BC
+    style N2 fill:#F3E5F5,stroke:#BA68C8
+    style N3 fill:#F3E5F5,stroke:#BA68C8
+    style N4 fill:#F3E5F5,stroke:#BA68C8
+    style N5 fill:#F9FBE7,stroke:#DCE775
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#F3E5F5,stroke:#BA68C8
+    style N8 fill:#F9FBE7,stroke:#DCE775
+    style N9 fill:#F3E5F5,stroke:#BA68C8
+    style N10 fill:#F3E5F5,stroke:#BA68C8
+    style N11 fill:#F9FBE7,stroke:#DCE775
+    style N12 fill:#D0EFEE,stroke:#73C6BC
+    style N13 fill:#D0EFEE,stroke:#73C6BC
+    style S0 fill:#D0EFEE,stroke:#73C6BC
+    style S1 fill:#F3E5F5,stroke:#BA68C8
+    style M0 fill:#F3E5F5,stroke:#BA68C8
+    style M1 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_1 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_1 fill:#F9FBE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#73C6BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_329.txt b/train/mermaid/hard/mermaid_329.txt
new file mode 100644
index 0000000000000000000000000000000000000000..db48cd7211cf611026cb3072c95d523bf42c7fe3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_329.txt
@@ -0,0 +1,34 @@
+<Closed_Loop Systems, connectedTo, Recycling Processing>
+<Closed_Loop Systems, connectedTo, Waste Incineration>
+<Community Recycling Programs, connectedTo, Extended Producer Responsibility>
+<Community Recycling Programs, partOf, Public Education on Waste>
+<Composting, connectedTo, Zero Waste Initiatives>
+<Extended Producer Responsibility, connectedTo, Closed_Loop Systems>
+<Extended Producer Responsibility, partOf, Public Education on Waste>
+<Hazardous Waste Disposal, connectedTo, Community Recycling Programs>
+<Hazardous Waste Disposal, connectedTo, Composting>
+<Hazardous Waste Disposal, connectedTo, Landfill Gas Collection>
+<Hazardous Waste Disposal, connectedTo, Recycling Processing>
+<Hazardous Waste Disposal, connectedTo, Waste Sorting>
+<Hazardous Waste Disposal, connectedTo, Zero Waste Initiatives>
+<Illegal Dumping Monitoring, develops, Material Recovery Facility Operation>
+<Illegal Dumping Monitoring, partOf, Waste Management Data Analytics>
+<Landfill Gas Collection, connectedTo, Recycling Processing>
+<Material Recovery Facility Operation, connectedTo, Transfer Station Management>
+<Material Recovery Facility Operation, partOf, Waste Management Data Analytics>
+<Recycling Processing, connectedTo, Textile Recycling>
+<Textile Recycling, connectedTo, Composting>
+<Transfer Station Management, connectedTo, Hazardous Waste Disposal>
+<Transfer Station Management, connectedTo, Landfill Gas Collection>
+<Waste Incineration, connectedTo, Landfill Gas Collection>
+<Waste Incineration, connectedTo, Recycling Processing>
+<Waste Incineration, connectedTo, Transfer Station Management>
+<Waste Incineration, recovers, Hazardous Waste Disposal>
+<Waste Logistics Optimization, connectedTo, Closed_Loop Systems>
+<Waste Logistics Optimization, connectedTo, Landfill Gas Collection>
+<Waste Logistics Optimization, connectedTo, Textile Recycling>
+<Waste Logistics Optimization, connectedTo, Waste Incineration>
+<Waste Logistics Optimization, connectedTo, Waste Reduction Planning>
+<Waste Reduction Planning, connectedTo, Closed_Loop Systems>
+<Waste Sorting, connectedTo, Illegal Dumping Monitoring>
+<Waste Sorting, partOf, Waste Management Data Analytics>
diff --git a/train/mermaid/hard/mermaid_33.txt b/train/mermaid/hard/mermaid_33.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5a0fb55e5b6fb0d102d76316244956e9fcf70e9f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_33.txt
@@ -0,0 +1,35 @@
+<A or B Testing, connectedTo, Marketing Campaign Launch>
+<Add to Cart, connectedTo, Data Analytics Reporting>
+<Add to Cart, connectedTo, Product Recommendation>
+<Affiliate Marketing, connectedTo, Wishlist Management>
+<Affiliate Marketing, partOf, Inventory Update>
+<Cart Abandonment, connectedTo, Checkout>
+<Cart Abandonment, connectedTo, Customer Inquiry>
+<Cart Abandonment, connectedTo, Marketing Campaign Launch>
+<Cart Abandonment, no, A or B Testing>
+<Cart Abandonment, yes, Live Chat Support>
+<Checkout, connectedTo, A or B Testing>
+<Cross_selling Recommendation, connectedTo, Cart Abandonment>
+<Cross_selling Recommendation, connectedTo, Subscription Service>
+<Customer Inquiry, connectedTo, Affiliate Marketing>
+<Customer Inquiry, partOf, Inventory Update>
+<Data Analytics Reporting, connectedTo, A or B Testing>
+<Data Analytics Reporting, connectedTo, Cross_selling Recommendation>
+<Live Chat Support, connectedTo, A or B Testing>
+<Live Chat Support, connectedTo, Checkout>
+<Price Adjustment, connectedTo, Product Listing>
+<Price Adjustment, partOf, Social Media Integration>
+<Product Listing, partOf, Social Media Integration>
+<Product Listing, yes, Cross_selling Recommendation>
+<Product Recommendation, no, Data Analytics Reporting>
+<Refund Process, connectedTo, Add to Cart>
+<Subscription Service, no, Supplier Onboarding>
+<Subscription Service, partOf, Social Media Integration>
+<Supplier Onboarding, connectedTo, Price Adjustment>
+<Supplier Onboarding, partOf, Social Media Integration>
+<Wishlist Management, connectedTo, Live Chat Support>
+<Wishlist Management, partOf, Inventory Update>
+<start, connectedTo, A or B Testing>
+<start, connectedTo, Cross_selling Recommendation>
+<start, connectedTo, Data Analytics Reporting>
+<start, connectedTo, Refund Process>
diff --git a/train/mermaid/hard/mermaid_330.mmd b/train/mermaid/hard/mermaid_330.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2de0b8b74ebabcf445e0f75608743fb82d3d275b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_330.mmd
@@ -0,0 +1,104 @@
+graph TD
+    N0([Organics Collection])
+    N1[[Waste Collection]]
+    N2(Waste Audit)
+    N3(Composting)
+    N4(Landfill Operation)
+    N5([Circular Economy Initiatives])
+    N6[Extended Producer Responsibility]
+    N7[[Leachate Treatment]]
+    N8[(Construction and Demolition Waste Management)]
+    N9[[Waste Compaction]]
+    N10([Closed_Loop Systems])
+    N11[[Metal Recycling]]
+    N12([Hazardous Waste Disposal])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Material Recovery Facility Operation
+        nest0_0{Textile Recycling}
+        nest0_1[/Glass Recycling/]
+    end
+    subgraph Waste Sorting
+        nest1_0[Waste Reduction Planning]
+        nest1_1{Waste Logistics Optimization}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    N10 -.-> nest0_0
+    nest0_1 -.-> |plans| N7
+    nest1_0 -.-> nest1_1
+    N4 --> nest1_0
+    nest1_1 -.-> N12
+    N6 -.-> S0
+    S0 -.-> N10
+    S0 --> N12
+    S0 -.-> N9
+    N9 -.-> S1
+    S1 --> |audits| N11
+    S1 -.-> N12
+    N3 -.-> M0
+    N0 --> M0
+    N2 --> M0
+    M0 --> N5
+    style N0 fill:#E8F0EA,stroke:#92C79A
+    style N1 fill:#E8F0EA,stroke:#92C79A
+    style N2 fill:#E8F0EA,stroke:#92C79A
+    style N3 fill:#D3F7F9,stroke:#80DDEA
+    style N4 fill:#FFE88D,stroke:#FFDA4E
+    style N5 fill:#D3F7F9,stroke:#80DDEA
+    style N6 fill:#FFE88D,stroke:#FFDA4E
+    style N7 fill:#D3F7F9,stroke:#80DDEA
+    style N8 fill:#FFE88D,stroke:#FFDA4E
+    style N9 fill:#D3F7F9,stroke:#80DDEA
+    style N10 fill:#D3F7F9,stroke:#80DDEA
+    style N11 fill:#FFE88D,stroke:#FFDA4E
+    style N12 fill:#E8F0EA,stroke:#92C79A
+    style S0 fill:#E8F0EA,stroke:#92C79A
+    style S1 fill:#E8F0EA,stroke:#92C79A
+    style M0 fill:#FFE88D,stroke:#FFDA4E
+    style nest0_0 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_1 fill:#E8F0EA,stroke:#92C79A
+    style nest1_0 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_1 fill:#D3F7F9,stroke:#80DDEA
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFDA4E,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_331.txt b/train/mermaid/hard/mermaid_331.txt
new file mode 100644
index 0000000000000000000000000000000000000000..919769c7a386869a2bbd1a30b94d35a69da93df3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_331.txt
@@ -0,0 +1,34 @@
+<Circular Economy Initiatives, connectedTo, Electronic Waste Recycling>
+<Circular Economy Initiatives, connectedTo, Illegal Dumping Monitoring>
+<Circular Economy Initiatives, connectedTo, Smart Waste Bins>
+<Circular Economy Initiatives, connectedTo, Waste Logistics Optimization>
+<Circular Economy Initiatives, connectedTo, Waste Management Policy Development>
+<Closed_Loop Systems, connectedTo, Electronic Waste Recycling>
+<Closed_Loop Systems, partOf, Container Management>
+<Glass Recycling, connectedTo, Circular Economy Initiatives>
+<Glass Recycling, yes, Waste Management Data Analytics>
+<Hazardous Waste Disposal, connectedTo, Circular Economy Initiatives>
+<Hazardous Waste Disposal, connectedTo, Glass Recycling>
+<Illegal Dumping Monitoring, connectedTo, Smart Waste Bins>
+<Industrial Waste Management, connectedTo, Circular Economy Initiatives>
+<Industrial Waste Management, connectedTo, Waste Compaction>
+<Leachate Treatment, connectedTo, Waste Characterization Study>
+<Leachate Treatment, partOf, Anaerobic Digestion>
+<Recycling Processing, connectedTo, Leachate Treatment>
+<Recycling Processing, partOf, Anaerobic Digestion>
+<Smart Waste Bins, connectedTo, Electronic Waste Recycling>
+<Waste Audit, connectedTo, Closed_Loop Systems>
+<Waste Audit, partOf, Container Management>
+<Waste Characterization Study, connectedTo, Waste Sorting>
+<Waste Characterization Study, partOf, Anaerobic Digestion>
+<Waste Compaction, connectedTo, Circular Economy Initiatives>
+<Waste Compaction, connectedTo, Hazardous Waste Disposal>
+<Waste Logistics Optimization, connectedTo, Waste Audit>
+<Waste Logistics Optimization, partOf, Container Management>
+<Waste Management Data Analytics, connectedTo, Circular Economy Initiatives>
+<Waste Management Data Analytics, connectedTo, Recycling Processing>
+<Waste Management Policy Development, connectedTo, Electronic Waste Recycling>
+<Waste Management Policy Development, connectedTo, Illegal Dumping Monitoring>
+<Waste Management Policy Development, connectedTo, Waste Sorting>
+<Waste Sorting, connectedTo, Illegal Dumping Monitoring>
+<start, connectedTo, Industrial Waste Management>
diff --git a/train/mermaid/hard/mermaid_332.mmd b/train/mermaid/hard/mermaid_332.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1d568f1c0a744c8ad7a2bba23c1613b753a2a633
--- /dev/null
+++ b/train/mermaid/hard/mermaid_332.mmd
@@ -0,0 +1,154 @@
+graph LR
+    N0([start])
+    N1[Metal Recycling]
+    N2[Waste_to_Energy Conversion]
+    N3(Composting)
+    N4[(Container Management)]
+    N5(Community Recycling Programs)
+    N6{Landfill Gas Collection}
+    N7[[Closed_Loop Systems]]
+    N8[Zero Waste Initiatives]
+    N9([Material Recovery Facility Operation])
+    N10[Waste Sorting]
+    N11[/Waste Collection/]
+    N12[[Waste Characterization Study]]
+    N13[[Paper Recycling]]
+    N14[Landfill Operation]
+    N15(Anaerobic Digestion)
+    N16{Organics Collection}
+    N17(Waste Compaction)
+    N18[/Waste Management Policy Development/]
+    N19([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Textile Recycling
+        nest0_0[/Waste Audit/]
+        nest0_1(Waste Logistics Optimization)
+    end
+    subgraph Leachate Treatment
+        nest1_0[Electronic Waste Recycling]
+        nest1_1[(Waste Reduction Planning)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> |treats| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 --> N17
+    N17 -.-> N18
+    N18 --> |reuses| N19
+    nest0_0 -.-> nest0_1
+    N1 --> |separates| nest0_0
+    nest0_1 --> N12
+    nest1_0 --> nest1_1
+    N9 --> |maintains| nest1_0
+    nest1_1 --> N5
+    N15 --> S0
+    S0 -.-> |segregates| N19
+    S0 -.-> N18
+    S0 -.-> N17
+    N15 -.-> S1
+    S1 --> N18
+    S1 --> N17
+    S1 -.-> |educates| N19
+    N0 --> S2
+    S2 -.-> N8
+    S2 --> N13
+    S2 --> N17
+    S2 -.-> N3
+    N11 -.-> |compresses| M0
+    N2 --> M0
+    N9 -.-> M0
+    M0 --> N14
+    N6 --> M1
+    N0 --> M1
+    M1 --> N12
+    style N0 fill:#EBEBEB,stroke:#E0E0E0
+    style N1 fill:#FFF6D9,stroke:#FFCC7A
+    style N2 fill:#FFF6D9,stroke:#FFCC7A
+    style N3 fill:#E8F0FF,stroke:#A2D0FF
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#EBEBEB,stroke:#E0E0E0
+    style N6 fill:#FFF6D9,stroke:#FFCC7A
+    style N7 fill:#EBEBEB,stroke:#E0E0E0
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#FFF6D9,stroke:#FFCC7A
+    style N10 fill:#E8F0FF,stroke:#A2D0FF
+    style N11 fill:#FFF6D9,stroke:#FFCC7A
+    style N12 fill:#FFF6D9,stroke:#FFCC7A
+    style N13 fill:#E8F0FF,stroke:#A2D0FF
+    style N14 fill:#FFF6D9,stroke:#FFCC7A
+    style N15 fill:#EBEBEB,stroke:#E0E0E0
+    style N16 fill:#EBEBEB,stroke:#E0E0E0
+    style N17 fill:#EBEBEB,stroke:#E0E0E0
+    style N18 fill:#FFF6D9,stroke:#FFCC7A
+    style N19 fill:#E8F0FF,stroke:#A2D0FF
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#EBEBEB,stroke:#E0E0E0
+    style S2 fill:#EBEBEB,stroke:#E0E0E0
+    style M0 fill:#E8F0FF,stroke:#A2D0FF
+    style M1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_1 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_1 fill:#FFF6D9,stroke:#FFCC7A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#E0E0E0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_333.txt b/train/mermaid/hard/mermaid_333.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6e8dc49a7ce12afb44e53cc4e8659937dbbd73cf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_333.txt
@@ -0,0 +1,40 @@
+<Biomedical Waste Handling, connectedTo, Waste Sorting>
+<Biomedical Waste Handling, partOf, Waste Compaction>
+<Circular Economy Initiatives, connectedTo, Community Recycling Programs>
+<Circular Economy Initiatives, connectedTo, Construction and Demolition Waste Management>
+<Circular Economy Initiatives, connectedTo, Hazardous Waste Disposal>
+<Community Recycling Programs, connectedTo, Waste Collection>
+<Community Recycling Programs, partOf, Recycling Processing>
+<Composting, connectedTo, Circular Economy Initiatives>
+<Composting, connectedTo, Construction and Demolition Waste Management>
+<Composting, connectedTo, Electronic Waste Recycling>
+<Composting, connectedTo, Organics Collection>
+<Composting, connectedTo, Paper Recycling>
+<Composting, controls, Construction and Demolition Waste Management>
+<Construction and Demolition Waste Management, connectedTo, Waste Characterization Study>
+<Electronic Waste Recycling, connectedTo, Paper Recycling>
+<Extended Producer Responsibility, connectedTo, Waste Management Policy Development>
+<Hazardous Waste Disposal, connectedTo, Construction and Demolition Waste Management>
+<Hazardous Waste Disposal, connectedTo, Organics Collection>
+<Hazardous Waste Disposal, connectedTo, Paper Recycling>
+<Landfill Operation, connectedTo, Biomedical Waste Handling>
+<Landfill Operation, partOf, Waste Compaction>
+<Organics Collection, connectedTo, Construction and Demolition Waste Management>
+<Organics Collection, connectedTo, Paper Recycling>
+<Paper Recycling, connectedTo, Waste Audit>
+<Paper Recycling, connectedTo, Waste Sorting>
+<Paper Recycling, connectedTo, Zero Waste Initiatives>
+<Textile Recycling, connectedTo, Landfill Operation>
+<Textile Recycling, partOf, Waste Compaction>
+<Waste Audit, connectedTo, Textile Recycling>
+<Waste Audit, connectedTo, Zero Waste Initiatives>
+<Waste Characterization Study, connectedTo, Electronic Waste Recycling>
+<Waste Characterization Study, connectedTo, Paper Recycling>
+<Waste Collection, connectedTo, Circular Economy Initiatives>
+<Waste Collection, partOf, Recycling Processing>
+<Waste Management Policy Development, connectedTo, Composting>
+<Waste Management Policy Development, connectedTo, Construction and Demolition Waste Management>
+<Waste Management Policy Development, connectedTo, Hazardous Waste Disposal>
+<Waste Management Policy Development, connectedTo, Zero Waste Initiatives>
+<Waste Management Policy Development, recovers, Paper Recycling>
+<Zero Waste Initiatives, connectedTo, Waste Sorting>
diff --git a/train/mermaid/hard/mermaid_334.txt b/train/mermaid/hard/mermaid_334.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a65623d97068fe5b060e85003dfdd777c7c3796c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_334.txt
@@ -0,0 +1,28 @@
+<Closed_Loop Systems, connectedTo, Plastic Recycling Technologies>
+<Closed_Loop Systems, connectedTo, Waste Collection>
+<Closed_Loop Systems, partOf, Glass Recycling>
+<Community Recycling Programs, connectedTo, Illegal Dumping Monitoring>
+<Community Recycling Programs, connectedTo, Paper Recycling>
+<Community Recycling Programs, connectedTo, Transfer Station Management>
+<Community Recycling Programs, connectedTo, Waste_to_Energy Conversion>
+<Community Recycling Programs, connectedTo, Zero Waste Initiatives>
+<Electronic Waste Recycling, connectedTo, Closed_Loop Systems>
+<Electronic Waste Recycling, connectedTo, Smart Waste Bins>
+<Illegal Dumping Monitoring, no, start>
+<Paper Recycling, connectedTo, Transfer Station Management>
+<Plastic Recycling Technologies, connectedTo, Community Recycling Programs>
+<Plastic Recycling Technologies, partOf, Glass Recycling>
+<Resource Recovery, connectedTo, Zero Waste Initiatives>
+<Resource Recovery, partOf, Waste Compaction>
+<Smart Waste Bins, connectedTo, Waste Collection>
+<Textile Recycling, connectedTo, Electronic Waste Recycling>
+<Transfer Station Management, connectedTo, Illegal Dumping Monitoring>
+<Transfer Station Management, connectedTo, Resource Recovery>
+<Waste Collection, connectedTo, Waste Sorting>
+<Waste Sorting, connectedTo, Community Recycling Programs>
+<Waste Sorting, connectedTo, Paper Recycling>
+<Waste Sorting, connectedTo, Transfer Station Management>
+<Waste_to_Energy Conversion, connectedTo, Paper Recycling>
+<Zero Waste Initiatives, connectedTo, Textile Recycling>
+<Zero Waste Initiatives, partOf, Waste Compaction>
+<start, connectedTo, Textile Recycling>
diff --git a/train/mermaid/hard/mermaid_337.txt b/train/mermaid/hard/mermaid_337.txt
new file mode 100644
index 0000000000000000000000000000000000000000..11443fc0c514edce0308b8169d7a70325a972a0d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_337.txt
@@ -0,0 +1,44 @@
+<Agricultural Water Use Efficiency, connectedTo, Ecosystem Protection>
+<Agricultural Water Use Efficiency, connectedTo, Flood Control>
+<Aquifer Recharge, connectedTo, Groundwater Management>
+<Billing and Revenue Management, connectedTo, Agricultural Water Use Efficiency>
+<Climate Change Adaptation for Water, connectedTo, Water Loss Detection>
+<Climate Change Adaptation for Water, partOf, Water Resource Planning>
+<Desalination, connectedTo, Water Conservation Planning>
+<Drinking Water Standards Compliance, connectedTo, Irrigation Management>
+<Drinking Water Standards Compliance, connectedTo, Smart Water Networks>
+<Drinking Water Standards Compliance, connectedTo, Water Conservation Planning>
+<Drinking Water Standards Compliance, connectedTo, Water Infrastructure Maintenance>
+<Ecosystem Protection, connectedTo, Climate Change Adaptation for Water>
+<Ecosystem Protection, partOf, Water Resource Planning>
+<Flood Control, connectedTo, Desalination>
+<Greywater Recycling, connectedTo, Water Infrastructure Maintenance>
+<Groundwater Management, connectedTo, Water Conservation Planning>
+<Groundwater Management, no, Transboundary Water Management>
+<Hydroelectric Power Generation, connectedTo, Greywater Recycling>
+<Hydrological Modeling, connectedTo, Wastewater Collection>
+<Hydrological Modeling, partOf, Industrial Water Use Optimization>
+<Irrigation Management, connectedTo, end>
+<Pollution Source Identification, connectedTo, Irrigation Management>
+<Pollution Source Identification, partOf, Industrial Water Use Optimization>
+<Sewer System Inspection, connectedTo, Agricultural Water Use Efficiency>
+<Sewer System Inspection, connectedTo, Water Loss Detection>
+<Smart Water Networks, connectedTo, Water Conservation Planning>
+<Smart Water Networks, connectedTo, Water Quality Monitoring>
+<Transboundary Water Management, connectedTo, Agricultural Water Use Efficiency>
+<Transboundary Water Management, connectedTo, Drinking Water Standards Compliance>
+<Transboundary Water Management, connectedTo, Greywater Recycling>
+<Transboundary Water Management, no, Billing and Revenue Management>
+<Transboundary Water Management, no, Hydrological Modeling>
+<Wastewater Collection, connectedTo, Pollution Source Identification>
+<Wastewater Collection, partOf, Industrial Water Use Optimization>
+<Water Conservation Planning, connectedTo, Irrigation Management>
+<Water Infrastructure Maintenance, connectedTo, Billing and Revenue Management>
+<Water Infrastructure Maintenance, yes, Water Conservation Planning>
+<Water Loss Detection, no, Aquifer Recharge>
+<Water Quality Monitoring, connectedTo, Billing and Revenue Management>
+<Water Quality Monitoring, connectedTo, Hydroelectric Power Generation>
+<Water Quality Monitoring, connectedTo, Irrigation Management>
+<Water Quality Monitoring, yes, Water Infrastructure Maintenance>
+<start, connectedTo, Agricultural Water Use Efficiency>
+<start, connectedTo, Sewer System Inspection>
diff --git a/train/mermaid/hard/mermaid_338.mmd b/train/mermaid/hard/mermaid_338.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0045d616582485c6840b84f7bedd1f4434f645f7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_338.mmd
@@ -0,0 +1,102 @@
+graph TD
+    N0([Water Distribution])
+    N1(Transboundary Water Management)
+    N2([Ecosystem Protection])
+    N3[Water Loss Detection]
+    N4[/Dam Management/]
+    N5(Water Scarcity Mitigation)
+    N6[/Wastewater Collection/]
+    N7[Flood Control]
+    N8(Climate Change Adaptation for Water)
+    N9([Watershed Management])
+    S0(( ))
+    M0(( ))
+    subgraph Reservoir Operation
+        nest0_0[(Water Meter Reading)]
+        nest0_1(Agricultural Water Use Efficiency)
+        nest0_2([Smart Water Networks])
+        nest0_3([Water Rights Management])
+    end
+    subgraph Wastewater Treatment
+        nest1_0[/Industrial Water Use Optimization/]
+        nest1_1[[Piping Network Repair]]
+        nest1_2([Water Resource Planning])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> |designs| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> |plans| nest0_3
+    N6 -.-> nest0_0
+    nest0_3 --> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N1 --> nest1_0
+    nest1_2 --> N6
+    N3 --> S0
+    S0 --> |maintains| N8
+    S0 --> N7
+    N0 -.-> M0
+    N1 -.-> |filters| M0
+    M0 -.-> N4
+    nest0_0 --> nest0_2
+    N4 --> N6
+    N7 --> nest0_1
+    N8 -.-> N3
+    N3 --> N6
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#E0F7FA,stroke:#00BCD4
+    style N2 fill:#E0F7FA,stroke:#00BCD4
+    style N3 fill:#E8F0FF,stroke:#A2D0FF
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#E0F7FA,stroke:#00BCD4
+    style N6 fill:#E0F7FA,stroke:#00BCD4
+    style N7 fill:#E8F0FF,stroke:#A2D0FF
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#E8F0FF,stroke:#A2D0FF
+    style S0 fill:#FFFDE0,stroke:#FFF8A6
+    style M0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_1 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_2 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_3 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_1 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_2 fill:#E0F7FA,stroke:#00BCD4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_339.mmd b/train/mermaid/hard/mermaid_339.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4aaf7a2bea620206878b262818e1b9a2fafa5d8e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_339.mmd
@@ -0,0 +1,87 @@
+graph LR
+    N0([start])
+    N1[(Water Rights Management)]
+    N2[Water Resource Planning]
+    N3{Water Quality Monitoring}
+    N4[[Desalination]]
+    N5[[Wastewater Collection]]
+    N6(Rainwater Harvesting)
+    N7([Ecosystem Protection])
+    N8(Hydroelectric Power Generation)
+    N9[Hydrological Modeling]
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Water Scarcity Mitigation
+        nest0_0[[Water Loss Detection]]
+        nest0_1([Drinking Water Standards Compliance])
+        nest0_2([Water Conservation Planning])
+    end
+    subgraph Watershed Management
+        nest1_0([Piping Network Repair])
+        nest1_1[Dam Management]
+        nest1_2[Reservoir Operation]
+        nest1_3[Smart Water Networks]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> |no| N5
+    N5 --> N6
+    N6 --> |no| N7
+    N7 --> N8
+    N8 --> N9
+    nest0_0 -.-> |no| nest0_1
+    nest0_1 --> nest0_2
+    N8 -.-> nest0_0
+    nest0_2 -.-> N7
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> |no| nest1_3
+    N4 --> nest1_0
+    nest1_3 -.-> N7
+    N4 --> S0
+    S0 --> N7
+    S0 --> N6
+    S0 --> N9
+    N5 --> S1
+    S1 --> N7
+    S1 -.-> N9
+    S1 --> |no| N8
+    N3 -.-> M1
+    N5 --> |no| M1
+    M1 -.-> N9
+    style S0 fill:#E6EE9C,stroke:#CDDC39
+    style S1 fill:#E0F2F1,stroke:#26A69A
+    style M1 fill:#E6EE9C,stroke:#CDDC39
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_339.txt b/train/mermaid/hard/mermaid_339.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a9c4c2ebfa1263205c909d5879d791395d4749e8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_339.txt
@@ -0,0 +1,33 @@
+<Dam Management, connectedTo, Reservoir Operation>
+<Dam Management, partOf, Watershed Management>
+<Desalination, connectedTo, Ecosystem Protection>
+<Desalination, connectedTo, Hydrological Modeling>
+<Desalination, connectedTo, Piping Network Repair>
+<Desalination, connectedTo, Rainwater Harvesting>
+<Desalination, no, Wastewater Collection>
+<Drinking Water Standards Compliance, connectedTo, Water Conservation Planning>
+<Drinking Water Standards Compliance, partOf, Water Scarcity Mitigation>
+<Ecosystem Protection, connectedTo, Hydroelectric Power Generation>
+<Hydroelectric Power Generation, connectedTo, Hydrological Modeling>
+<Hydroelectric Power Generation, connectedTo, Water Loss Detection>
+<Piping Network Repair, connectedTo, Dam Management>
+<Piping Network Repair, partOf, Watershed Management>
+<Rainwater Harvesting, no, Ecosystem Protection>
+<Reservoir Operation, no, Smart Water Networks>
+<Reservoir Operation, partOf, Watershed Management>
+<Smart Water Networks, connectedTo, Ecosystem Protection>
+<Smart Water Networks, partOf, Watershed Management>
+<Wastewater Collection, connectedTo, Ecosystem Protection>
+<Wastewater Collection, connectedTo, Hydrological Modeling>
+<Wastewater Collection, connectedTo, Rainwater Harvesting>
+<Wastewater Collection, no, Hydroelectric Power Generation>
+<Wastewater Collection, no, Hydrological Modeling>
+<Water Conservation Planning, connectedTo, Ecosystem Protection>
+<Water Conservation Planning, partOf, Water Scarcity Mitigation>
+<Water Loss Detection, no, Drinking Water Standards Compliance>
+<Water Loss Detection, partOf, Water Scarcity Mitigation>
+<Water Quality Monitoring, connectedTo, Desalination>
+<Water Quality Monitoring, connectedTo, Hydrological Modeling>
+<Water Resource Planning, connectedTo, Water Quality Monitoring>
+<Water Rights Management, connectedTo, Water Resource Planning>
+<start, connectedTo, Water Rights Management>
diff --git a/train/mermaid/hard/mermaid_34.txt b/train/mermaid/hard/mermaid_34.txt
new file mode 100644
index 0000000000000000000000000000000000000000..153a614a5b06f8ad5be400951434a763e3d2938e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_34.txt
@@ -0,0 +1,30 @@
+<Affiliate Marketing, connectedTo, Product Listing>
+<Affiliate Marketing, connectedTo, Social Media Integration>
+<Affiliate Marketing, connectedTo, Wishlist Management>
+<Checkout, connectedTo, Payment>
+<Checkout, partOf, Add to Cart>
+<Delivery Tracking, connectedTo, Checkout>
+<Delivery Tracking, connectedTo, Invoice Generation>
+<Marketing Campaign Launch, connectedTo, Stock Replenishment>
+<Marketing Campaign Launch, partOf, Up_selling Offer>
+<Payment, connectedTo, Search Engine Optimization>
+<Payment, partOf, Add to Cart>
+<Product Listing, connectedTo, Refund Process>
+<Refund Process, connectedTo, User Account Management>
+<Search Engine Optimization, connectedTo, Shipment>
+<Search Engine Optimization, partOf, Add to Cart>
+<Shipment, connectedTo, Invoice Generation>
+<Shipment, connectedTo, Product Listing>
+<Shipment, connectedTo, Social Media Integration>
+<Social Media Integration, collects, Refund Process>
+<Social Media Integration, connectedTo, Invoice Generation>
+<Social Media Integration, connectedTo, Marketing Campaign Launch>
+<Social Media Integration, connectedTo, Product Listing>
+<Social Media Integration, connectedTo, User Account Management>
+<Stock Replenishment, connectedTo, Warehouse Management>
+<Stock Replenishment, partOf, Up_selling Offer>
+<User Account Management, connectedTo, Delivery Tracking>
+<Warehouse Management, connectedTo, User Account Management>
+<Warehouse Management, partOf, Up_selling Offer>
+<Wishlist Management, connectedTo, Shipment>
+<Wishlist Management, connectedTo, Social Media Integration>
diff --git a/train/mermaid/hard/mermaid_341.mmd b/train/mermaid/hard/mermaid_341.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..748142e1d31b5ea2ef2468182c2e538f65141195
--- /dev/null
+++ b/train/mermaid/hard/mermaid_341.mmd
@@ -0,0 +1,152 @@
+graph TD
+    N0([start])
+    N1[Drinking Water Standards Compliance]
+    N2[[Water Scarcity Mitigation]]
+    N3[[Desalination]]
+    N4[Water Infrastructure Maintenance]
+    N5[Aquifer Recharge]
+    N6([Hydroelectric Power Generation])
+    N7[[Groundwater Management]]
+    N8(Hydrological Modeling)
+    N9([Water Conservation Planning])
+    N10[[Piping Network Repair]]
+    N11[[Rainwater Harvesting]]
+    N12[Water Meter Reading]
+    N13([Greywater Recycling])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Environmental Flow Assessment
+        nest0_0([Smart Water Networks])
+        nest0_1(Water Source Identification)
+        nest0_2[(Drought Management)]
+    end
+    subgraph Public Awareness Campaigns
+        nest1_0(Water Loss Detection)
+        nest1_1[/Pollution Source Identification/]
+        nest1_2[Climate Change Adaptation for Water]
+    end
+    N0 -.-> |measures| N1
+    N1 -.-> |collects| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N3 -.-> nest0_0
+    nest0_2 --> N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N1 -.-> nest1_0
+    nest1_2 -.-> N2
+    N8 -.-> S0
+    S0 -.-> N10
+    S0 --> N13
+    S0 --> N12
+    S0 -.-> N11
+    N0 --> S1
+    S1 -.-> N3
+    S1 -.-> N9
+    S1 -.-> N7
+    N3 --> S2
+    S2 --> |designs| N13
+    S2 --> N7
+    N0 --> M0
+    N3 -.-> M0
+    N6 -.-> |responds| M0
+    M0 -.-> N8
+    N4 -.-> M1
+    N2 -.-> M1
+    N1 --> M1
+    N6 -.-> M1
+    M1 --> N8
+    N7 --> M2
+    N9 --> |optimizes| M2
+    N4 -.-> M2
+    N8 -.-> M2
+    M2 --> N11
+    style N0 fill:#F3E5F5,stroke:#AB47BC
+    style N1 fill:#F3E5F5,stroke:#AB47BC
+    style N2 fill:#D3D7EB,stroke:#8C9EFF
+    style N3 fill:#F3E5F5,stroke:#AB47BC
+    style N4 fill:#F3E5F5,stroke:#AB47BC
+    style N5 fill:#E8F0EA,stroke:#92C79A
+    style N6 fill:#F3E5F5,stroke:#AB47BC
+    style N7 fill:#F3E5F5,stroke:#AB47BC
+    style N8 fill:#F3E5F5,stroke:#AB47BC
+    style N9 fill:#F3E5F5,stroke:#AB47BC
+    style N10 fill:#E8F0EA,stroke:#92C79A
+    style N11 fill:#F3E5F5,stroke:#AB47BC
+    style N12 fill:#F3E5F5,stroke:#AB47BC
+    style N13 fill:#D3D7EB,stroke:#8C9EFF
+    style S0 fill:#E8F0EA,stroke:#92C79A
+    style S1 fill:#F3E5F5,stroke:#AB47BC
+    style S2 fill:#F3E5F5,stroke:#AB47BC
+    style M0 fill:#D3D7EB,stroke:#8C9EFF
+    style M1 fill:#E8F0EA,stroke:#92C79A
+    style M2 fill:#E8F0EA,stroke:#92C79A
+    style nest0_0 fill:#D3D7EB,stroke:#8C9EFF
+    style nest0_1 fill:#E8F0EA,stroke:#92C79A
+    style nest0_2 fill:#E8F0EA,stroke:#92C79A
+    style nest1_0 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_1 fill:#F3E5F5,stroke:#AB47BC
+    style nest1_2 fill:#E8F0EA,stroke:#92C79A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#92C79A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_341.txt b/train/mermaid/hard/mermaid_341.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1a578594d4eb606ec43e3e6d3baaf6dee108193f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_341.txt
@@ -0,0 +1,46 @@
+<Aquifer Recharge, connectedTo, Hydroelectric Power Generation>
+<Climate Change Adaptation for Water, connectedTo, Water Scarcity Mitigation>
+<Climate Change Adaptation for Water, partOf, Public Awareness Campaigns>
+<Desalination, connectedTo, Groundwater Management>
+<Desalination, connectedTo, Hydrological Modeling>
+<Desalination, connectedTo, Smart Water Networks>
+<Desalination, connectedTo, Water Infrastructure Maintenance>
+<Desalination, designs, Greywater Recycling>
+<Drinking Water Standards Compliance, collects, Water Scarcity Mitigation>
+<Drinking Water Standards Compliance, connectedTo, Hydrological Modeling>
+<Drinking Water Standards Compliance, connectedTo, Water Loss Detection>
+<Drought Management, connectedTo, Piping Network Repair>
+<Drought Management, partOf, Environmental Flow Assessment>
+<Groundwater Management, connectedTo, Hydrological Modeling>
+<Groundwater Management, connectedTo, Rainwater Harvesting>
+<Hydroelectric Power Generation, connectedTo, Groundwater Management>
+<Hydroelectric Power Generation, connectedTo, Hydrological Modeling>
+<Hydroelectric Power Generation, responds, Hydrological Modeling>
+<Hydrological Modeling, connectedTo, Greywater Recycling>
+<Hydrological Modeling, connectedTo, Piping Network Repair>
+<Hydrological Modeling, connectedTo, Rainwater Harvesting>
+<Hydrological Modeling, connectedTo, Water Conservation Planning>
+<Hydrological Modeling, connectedTo, Water Meter Reading>
+<Piping Network Repair, connectedTo, Rainwater Harvesting>
+<Pollution Source Identification, connectedTo, Climate Change Adaptation for Water>
+<Pollution Source Identification, partOf, Public Awareness Campaigns>
+<Rainwater Harvesting, connectedTo, Water Meter Reading>
+<Smart Water Networks, connectedTo, Water Source Identification>
+<Smart Water Networks, partOf, Environmental Flow Assessment>
+<Water Conservation Planning, connectedTo, Piping Network Repair>
+<Water Conservation Planning, optimizes, Rainwater Harvesting>
+<Water Infrastructure Maintenance, connectedTo, Aquifer Recharge>
+<Water Infrastructure Maintenance, connectedTo, Hydrological Modeling>
+<Water Infrastructure Maintenance, connectedTo, Rainwater Harvesting>
+<Water Loss Detection, connectedTo, Pollution Source Identification>
+<Water Loss Detection, partOf, Public Awareness Campaigns>
+<Water Meter Reading, connectedTo, Greywater Recycling>
+<Water Scarcity Mitigation, connectedTo, Desalination>
+<Water Scarcity Mitigation, connectedTo, Hydrological Modeling>
+<Water Source Identification, connectedTo, Drought Management>
+<Water Source Identification, partOf, Environmental Flow Assessment>
+<start, connectedTo, Desalination>
+<start, connectedTo, Groundwater Management>
+<start, connectedTo, Hydrological Modeling>
+<start, connectedTo, Water Conservation Planning>
+<start, measures, Drinking Water Standards Compliance>
diff --git a/train/mermaid/hard/mermaid_343.mmd b/train/mermaid/hard/mermaid_343.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3c4e2d3129b722c24a0280b0d73c8e904fdb4aef
--- /dev/null
+++ b/train/mermaid/hard/mermaid_343.mmd
@@ -0,0 +1,144 @@
+graph RL
+    N0([start])
+    N1[(Ecosystem Protection)]
+    N2[[Groundwater Management]]
+    N3[Water Infrastructure Maintenance]
+    N4[/Smart Water Networks/]
+    N5[/Billing and Revenue Management/]
+    N6[Reservoir Operation]
+    N7[[Transboundary Water Management]]
+    N8[Drinking Water Standards Compliance]
+    N9[Stormwater Management]
+    N10(Watershed Management)
+    N11[[Water Resource Planning]]
+    N12{Piping Network Repair}
+    N13[Water Rights Management]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Desalination
+        nest0_0(Rainwater Harvesting)
+        nest0_1[Hydroelectric Power Generation]
+    end
+    subgraph Water Loss Detection
+        nest1_0[Climate Change Adaptation for Water]
+        nest1_1([Water Scarcity Mitigation])
+        nest1_2(Hydrological Modeling)
+        nest1_3[/Water Quality Monitoring/]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    nest0_0 --> nest0_1
+    N1 --> nest0_0
+    nest0_1 -.-> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> |assesses| nest1_3
+    N9 --> nest1_0
+    nest1_3 -.-> N12
+    N4 -.-> S0
+    S0 --> N8
+    S0 --> N6
+    N4 --> S1
+    S1 --> N7
+    S1 -.-> |analyzes| N10
+    S1 --> N9
+    N4 -.-> M0
+    N3 -.-> |detects| M0
+    N6 -.-> M0
+    N9 -.-> M0
+    M0 --> N11
+    N0 -.-> M1
+    N1 --> M1
+    N5 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N7
+    N7 --> M2
+    N8 -.-> M2
+    N2 --> M2
+    M2 -.-> N12
+    style N0 fill:#FFF8E1,stroke:#FFD54F
+    style N1 fill:#F5F5F5,stroke:#BDBDBD
+    style N2 fill:#F5F5F5,stroke:#BDBDBD
+    style N3 fill:#F5F5F5,stroke:#BDBDBD
+    style N4 fill:#F6F6F6,stroke:#CFCFCF
+    style N5 fill:#F5F5F5,stroke:#BDBDBD
+    style N6 fill:#FFF8E1,stroke:#FFD54F
+    style N7 fill:#F6F6F6,stroke:#CFCFCF
+    style N8 fill:#FFF8E1,stroke:#FFD54F
+    style N9 fill:#F6F6F6,stroke:#CFCFCF
+    style N10 fill:#F5F5F5,stroke:#BDBDBD
+    style N11 fill:#F6F6F6,stroke:#CFCFCF
+    style N12 fill:#F6F6F6,stroke:#CFCFCF
+    style N13 fill:#F5F5F5,stroke:#BDBDBD
+    style N14 fill:#FFF8E1,stroke:#FFD54F
+    style S0 fill:#FFF8E1,stroke:#FFD54F
+    style S1 fill:#F5F5F5,stroke:#BDBDBD
+    style M0 fill:#F5F5F5,stroke:#BDBDBD
+    style M1 fill:#F5F5F5,stroke:#BDBDBD
+    style M2 fill:#F6F6F6,stroke:#CFCFCF
+    style nest0_0 fill:#F6F6F6,stroke:#CFCFCF
+    style nest0_1 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_1 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_2 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_3 fill:#F5F5F5,stroke:#BDBDBD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#BDBDBD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_344.txt b/train/mermaid/hard/mermaid_344.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0e2e7fbaa6aa3d5ffbfd11f06ad9882d43c8c7ac
--- /dev/null
+++ b/train/mermaid/hard/mermaid_344.txt
@@ -0,0 +1,39 @@
+<Agricultural Water Use Efficiency, connectedTo, Aquifer Recharge>
+<Agricultural Water Use Efficiency, connectedTo, Climate Change Adaptation for Water>
+<Agricultural Water Use Efficiency, connectedTo, Hydrological Modeling>
+<Agricultural Water Use Efficiency, connectedTo, Rainwater Harvesting>
+<Agricultural Water Use Efficiency, connectedTo, Water Meter Reading>
+<Aquifer Recharge, connectedTo, Hydrological Modeling>
+<Climate Change Adaptation for Water, connectedTo, Rainwater Harvesting>
+<Dam Management, connectedTo, Wastewater Collection>
+<Dam Management, partOf, Water Infrastructure Maintenance>
+<Desalination, connectedTo, Greywater Recycling>
+<Drought Management, connectedTo, Flood Control>
+<Drought Management, connectedTo, Water Meter Reading>
+<Drought Management, models, Aquifer Recharge>
+<Flood Control, connectedTo, Hydrological Modeling>
+<Flood Control, connectedTo, Industrial Water Use Optimization>
+<Greywater Recycling, connectedTo, Hydrological Modeling>
+<Greywater Recycling, connectedTo, Water Loss Detection>
+<Industrial Water Use Optimization, connectedTo, Public Awareness Campaigns>
+<Industrial Water Use Optimization, connectedTo, Wastewater Treatment>
+<Public Awareness Campaigns, connectedTo, Water Conservation Planning>
+<Rainwater Harvesting, connectedTo, Water Meter Reading>
+<Smart Water Networks, connectedTo, Greywater Recycling>
+<Smart Water Networks, partOf, Water Infrastructure Maintenance>
+<Stormwater Management, connectedTo, Water Quality Monitoring>
+<Stormwater Management, partOf, Drinking Water Standards Compliance>
+<Transboundary Water Management, connectedTo, Water Source Identification>
+<Wastewater Collection, connectedTo, Smart Water Networks>
+<Wastewater Collection, partOf, Water Infrastructure Maintenance>
+<Wastewater Treatment, connectedTo, Water Resource Planning>
+<Wastewater Treatment, partOf, Drinking Water Standards Compliance>
+<Water Conservation Planning, connectedTo, Agricultural Water Use Efficiency>
+<Water Conservation Planning, connectedTo, Dam Management>
+<Water Loss Detection, connectedTo, Transboundary Water Management>
+<Water Meter Reading, connectedTo, Aquifer Recharge>
+<Water Quality Monitoring, connectedTo, Agricultural Water Use Efficiency>
+<Water Quality Monitoring, partOf, Drinking Water Standards Compliance>
+<Water Resource Planning, connectedTo, Stormwater Management>
+<Water Resource Planning, partOf, Drinking Water Standards Compliance>
+<Water Source Identification, connectedTo, Drought Management>
diff --git a/train/mermaid/hard/mermaid_345.mmd b/train/mermaid/hard/mermaid_345.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..da34064d75e8244b922bc339c127bd736fac1cca
--- /dev/null
+++ b/train/mermaid/hard/mermaid_345.mmd
@@ -0,0 +1,116 @@
+graph LR
+    N0([start])
+    N1(Public Recycling Programs)
+    N2([Recycling Data Tracking])
+    N3[Cleaning and Processing]
+    N4[Energy Recovery from Non_Recyclables]
+    N5[/Tyre Recycling/]
+    N6[[Metal Recycling]]
+    N7[/Material Purity Testing/]
+    N8(Circular Economy Implementation)
+    N9(Hazardous Material Recovery)
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Recycling Infrastructure Development
+        nest0_0([Construction Waste Recycling])
+        nest0_1[(Advanced Sorting Technologies)]
+        nest0_2[Glass Recycling]
+        nest0_3[/Recycling Facility Optimization/]
+    end
+    subgraph Material Collection
+        nest1_0[/Plastic Recycling/]
+        nest1_1{Recycling Policy Advocacy}
+        nest1_2[Battery Recycling]
+        nest1_3[(Composting Organic Waste)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> |reduces| N9
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N6 -.-> nest0_0
+    nest0_3 --> N2
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> |complies| nest1_3
+    N2 -.-> nest1_0
+    nest1_3 --> N4
+    N0 -.-> S1
+    S1 -.-> N7
+    S1 --> N3
+    S1 -.-> N2
+    N3 -.-> S2
+    S2 --> N9
+    S2 --> N5
+    N1 -.-> M0
+    N0 --> M0
+    M0 --> N3
+    N4 --> M2
+    N2 --> M2
+    N3 -.-> M2
+    M2 --> N6
+    style N0 fill:#D0E0F8,stroke:#4285F4
+    style N1 fill:#D6D9F0,stroke:#9FA9E1
+    style N2 fill:#D6D9F0,stroke:#9FA9E1
+    style N3 fill:#D6D9F0,stroke:#9FA9E1
+    style N4 fill:#D6D9F0,stroke:#9FA9E1
+    style N5 fill:#D0E0F8,stroke:#4285F4
+    style N6 fill:#D6D9F0,stroke:#9FA9E1
+    style N7 fill:#D0E0F8,stroke:#4285F4
+    style N8 fill:#D6D9F0,stroke:#9FA9E1
+    style N9 fill:#D3F7F9,stroke:#80DDEA
+    style S1 fill:#D0E0F8,stroke:#4285F4
+    style S2 fill:#D6D9F0,stroke:#9FA9E1
+    style M0 fill:#D6D9F0,stroke:#9FA9E1
+    style M2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_0 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_1 fill:#D0E0F8,stroke:#4285F4
+    style nest0_2 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_3 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_0 fill:#D0E0F8,stroke:#4285F4
+    style nest1_1 fill:#D6D9F0,stroke:#9FA9E1
+    style nest1_2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest1_3 fill:#D0E0F8,stroke:#4285F4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_349.txt b/train/mermaid/hard/mermaid_349.txt
new file mode 100644
index 0000000000000000000000000000000000000000..27499e0dd8914f3cf374dbd8426a8793742695e1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_349.txt
@@ -0,0 +1,41 @@
+<Advanced Sorting Technologies, connectedTo, Tyre Recycling>
+<Advanced Sorting Technologies, partOf, Sorting and Segregation>
+<Battery Recycling, connectedTo, Composting Organic Waste>
+<Battery Recycling, partOf, Sorting and Segregation>
+<Chemical Recycling, no, end>
+<Circular Economy Implementation, connectedTo, Commercial Recycling Solutions>
+<Commercial Recycling Solutions, connectedTo, End_of_Life Product Management>
+<Composting Organic Waste, connectedTo, Chemical Recycling>
+<Composting Organic Waste, connectedTo, New Product Manufacturing>
+<End_of_Life Product Management, connectedTo, Chemical Recycling>
+<End_of_Life Product Management, connectedTo, Waste Stream Analysis>
+<Glass Recycling, connectedTo, Composting Organic Waste>
+<Glass Recycling, no, New Product Manufacturing>
+<Material Purity Testing, connectedTo, end>
+<Material Purity Testing, partOf, Recycling Infrastructure Development>
+<Mechanical Recycling, connectedTo, Reprocessing into Raw Material>
+<Mechanical Recycling, partOf, Recycling Infrastructure Development>
+<New Product Manufacturing, connectedTo, Recycling Market Development>
+<Plastic Recycling, connectedTo, Recycling Data Tracking>
+<Plastic Recycling, yes, Mechanical Recycling>
+<Public Recycling Programs, connectedTo, Plastic Recycling>
+<Recycling Data Tracking, connectedTo, Chemical Recycling>
+<Recycling Facility Optimization, connectedTo, Chemical Recycling>
+<Recycling Facility Optimization, connectedTo, Plastic Recycling>
+<Recycling Facility Optimization, connectedTo, Public Recycling Programs>
+<Recycling Facility Optimization, connectedTo, end>
+<Recycling Market Development, connectedTo, Circular Economy Implementation>
+<Reprocessing into Raw Material, connectedTo, Material Purity Testing>
+<Reprocessing into Raw Material, partOf, Recycling Infrastructure Development>
+<Textile Recycling, connectedTo, Chemical Recycling>
+<Textile Recycling, connectedTo, Public Recycling Programs>
+<Textile Recycling, connectedTo, Waste Audit for Recycling>
+<Textile Recycling, connectedTo, end>
+<Textile Recycling, yes, Recycling Facility Optimization>
+<Tyre Recycling, connectedTo, Battery Recycling>
+<Tyre Recycling, partOf, Sorting and Segregation>
+<Waste Audit for Recycling, partOf, Sorting and Segregation>
+<Waste Audit for Recycling, yes, Advanced Sorting Technologies>
+<Waste Stream Analysis, connectedTo, Textile Recycling>
+<start, connectedTo, Glass Recycling>
+<start, no, New Product Manufacturing>
diff --git a/train/mermaid/hard/mermaid_350.txt b/train/mermaid/hard/mermaid_350.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a34184d7fa4bca3be44f9b0adde652de5113e24e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_350.txt
@@ -0,0 +1,42 @@
+<Advanced Sorting Technologies, connectedTo, end>
+<Battery Recycling, connectedTo, Contamination Reduction>
+<Cleaning and Processing, connectedTo, Recycling Infrastructure Development>
+<Cleaning and Processing, connectedTo, Textile Recycling>
+<Construction Waste Recycling, connectedTo, Contamination Reduction>
+<Construction Waste Recycling, connectedTo, Material Purity Testing>
+<Construction Waste Recycling, connectedTo, Textile Recycling>
+<Contamination Reduction, connectedTo, Sorting and Segregation>
+<Deposit_Return Schemes, connectedTo, Construction Waste Recycling>
+<Deposit_Return Schemes, connectedTo, Electronic Waste Recycling>
+<Electronic Waste Recycling, connectedTo, Glass Recycling>
+<Electronic Waste Recycling, partOf, End_of_Life Product Management>
+<Energy Recovery from Non_Recyclables, connectedTo, Material Collection>
+<Energy Recovery from Non_Recyclables, connectedTo, Paper Recycling>
+<Energy Recovery from Non_Recyclables, connectedTo, Recycling Infrastructure Development>
+<Glass Recycling, connectedTo, Mechanical Recycling>
+<Glass Recycling, partOf, End_of_Life Product Management>
+<Material Collection, connectedTo, Advanced Sorting Technologies>
+<Material Collection, connectedTo, Mechanical Recycling>
+<Material Collection, connectedTo, Paper Recycling>
+<Material Collection, connectedTo, Recycling Infrastructure Development>
+<Material Purity Testing, connectedTo, Advanced Sorting Technologies>
+<Material Purity Testing, connectedTo, Cleaning and Processing>
+<Material Purity Testing, connectedTo, Textile Recycling>
+<Material Purity Testing, connectedTo, Waste Stream Analysis>
+<Mechanical Recycling, connectedTo, Battery Recycling>
+<Paper Recycling, connectedTo, Recycling Facility Optimization>
+<Paper Recycling, connectedTo, Recycling Infrastructure Development>
+<Recycling Data Tracking, connectedTo, Recycling Education>
+<Recycling Data Tracking, partOf, New Product Manufacturing>
+<Recycling Education, connectedTo, Waste Audit for Recycling>
+<Recycling Education, partOf, New Product Manufacturing>
+<Recycling Facility Optimization, connectedTo, Recycling Data Tracking>
+<Recycling Facility Optimization, partOf, New Product Manufacturing>
+<Recycling Infrastructure Development, connectedTo, Mechanical Recycling>
+<Sorting and Segregation, connectedTo, Advanced Sorting Technologies>
+<Textile Recycling, connectedTo, Waste Stream Analysis>
+<Waste Audit for Recycling, connectedTo, Material Collection>
+<Waste Audit for Recycling, partOf, New Product Manufacturing>
+<Waste Stream Analysis, connectedTo, Energy Recovery from Non_Recyclables>
+<start, connectedTo, Deposit_Return Schemes>
+<start, connectedTo, Paper Recycling>
diff --git a/train/mermaid/hard/mermaid_351.mmd b/train/mermaid/hard/mermaid_351.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5f47e2739f38098a5ff416d1f05a96dc72874327
--- /dev/null
+++ b/train/mermaid/hard/mermaid_351.mmd
@@ -0,0 +1,104 @@
+graph LR
+    N0([Collection Point Management])
+    N1([Deposit_Return Schemes])
+    N2[Paper Recycling]
+    N3(Recycling Policy Advocacy)
+    N4(Reprocessing into Raw Material)
+    N5[Energy Recovery from Non_Recyclables]
+    N6{Closed_Loop Material Flow}
+    N7[Public Recycling Programs]
+    N8([Recycling Facility Optimization])
+    N9([Composting Organic Waste])
+    N10{Product Design for Recyclability}
+    S0(( ))
+    S2(( ))
+    subgraph Circular Economy Implementation
+        nest0_0(Chemical Recycling)
+        nest0_1(Textile Recycling)
+        nest0_2[Recycling Data Tracking]
+    end
+    subgraph Material Purity Testing
+        nest1_0(Tyre Recycling)
+        nest1_1(New Product Manufacturing)
+        nest1_2([Metal Recycling])
+        nest1_3[Mechanical Recycling]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> |compacts| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N5 --> nest0_0
+    nest0_2 -.-> N6
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> |tests| nest1_3
+    N5 -.-> |classifies| nest1_0
+    nest1_3 -.-> N7
+    N2 -.-> S0
+    S0 --> N10
+    S0 --> N9
+    N6 --> S2
+    S2 -.-> N10
+    S2 --> N9
+    S2 --> N8
+    nest1_3 -.-> |supports| N8
+    N5 --> N1
+    nest1_0 --> N0
+    style N0 fill:#ECEFF1,stroke:#90A4AE
+    style N1 fill:#ECEFF1,stroke:#90A4AE
+    style N2 fill:#C2E8E6,stroke:#61CAC3
+    style N3 fill:#F3E5F5,stroke:#BA68C8
+    style N4 fill:#ECEFF1,stroke:#90A4AE
+    style N5 fill:#C2E8E6,stroke:#61CAC3
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#C2E8E6,stroke:#61CAC3
+    style N8 fill:#ECEFF1,stroke:#90A4AE
+    style N9 fill:#C2E8E6,stroke:#61CAC3
+    style N10 fill:#C2E8E6,stroke:#61CAC3
+    style S0 fill:#C2E8E6,stroke:#61CAC3
+    style S2 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_0 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_1 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_2 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_1 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_2 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_3 fill:#F3E5F5,stroke:#BA68C8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 14 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#61CAC3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_351.txt b/train/mermaid/hard/mermaid_351.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3e8faef9e7a960c2a6a7afe5bc2c6e0dbd98c4e1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_351.txt
@@ -0,0 +1,34 @@
+<Chemical Recycling, connectedTo, Textile Recycling>
+<Chemical Recycling, partOf, Circular Economy Implementation>
+<Closed_Loop Material Flow, connectedTo, Composting Organic Waste>
+<Closed_Loop Material Flow, connectedTo, Product Design for Recyclability>
+<Closed_Loop Material Flow, connectedTo, Public Recycling Programs>
+<Closed_Loop Material Flow, connectedTo, Recycling Facility Optimization>
+<Collection Point Management, connectedTo, Deposit_Return Schemes>
+<Composting Organic Waste, connectedTo, Product Design for Recyclability>
+<Deposit_Return Schemes, connectedTo, Paper Recycling>
+<Energy Recovery from Non_Recyclables, classifies, Tyre Recycling>
+<Energy Recovery from Non_Recyclables, connectedTo, Chemical Recycling>
+<Energy Recovery from Non_Recyclables, connectedTo, Closed_Loop Material Flow>
+<Energy Recovery from Non_Recyclables, connectedTo, Deposit_Return Schemes>
+<Mechanical Recycling, connectedTo, Public Recycling Programs>
+<Mechanical Recycling, partOf, Material Purity Testing>
+<Mechanical Recycling, supports, Recycling Facility Optimization>
+<Metal Recycling, partOf, Material Purity Testing>
+<Metal Recycling, tests, Mechanical Recycling>
+<New Product Manufacturing, connectedTo, Metal Recycling>
+<New Product Manufacturing, partOf, Material Purity Testing>
+<Paper Recycling, connectedTo, Composting Organic Waste>
+<Paper Recycling, connectedTo, Product Design for Recyclability>
+<Paper Recycling, connectedTo, Recycling Policy Advocacy>
+<Public Recycling Programs, connectedTo, Recycling Facility Optimization>
+<Recycling Data Tracking, connectedTo, Closed_Loop Material Flow>
+<Recycling Data Tracking, partOf, Circular Economy Implementation>
+<Recycling Facility Optimization, connectedTo, Composting Organic Waste>
+<Recycling Policy Advocacy, compacts, Reprocessing into Raw Material>
+<Reprocessing into Raw Material, connectedTo, Energy Recovery from Non_Recyclables>
+<Textile Recycling, connectedTo, Recycling Data Tracking>
+<Textile Recycling, partOf, Circular Economy Implementation>
+<Tyre Recycling, connectedTo, Collection Point Management>
+<Tyre Recycling, connectedTo, New Product Manufacturing>
+<Tyre Recycling, partOf, Material Purity Testing>
diff --git a/train/mermaid/hard/mermaid_352.mmd b/train/mermaid/hard/mermaid_352.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..50b20adf3b568554ae9dd21f5eb64e22ab5490d2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_352.mmd
@@ -0,0 +1,146 @@
+graph RL
+    N0([Contamination Reduction])
+    N1[/Electronic Waste Recycling/]
+    N2([Recycling Data Tracking])
+    N3[[Textile Recycling]]
+    N4(Metal Recycling)
+    N5[/End_of_Life Product Management/]
+    N6[[Industrial Recycling Programs]]
+    N7(Waste Audit for Recycling)
+    N8([Material Collection])
+    N9(Recycling Infrastructure Development)
+    N10(Composting Organic Waste)
+    N11([Battery Recycling])
+    N12([Paper Recycling])
+    N13([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Circular Economy Implementation
+        nest0_0([Closed_Loop Material Flow])
+        nest0_1[Construction Waste Recycling]
+        nest0_2[Recycling Education]
+        nest0_3[/Sorting and Segregation/]
+    end
+    subgraph New Product Manufacturing
+        nest1_0(Reprocessing into Raw Material)
+        nest1_1(Advanced Sorting Technologies)
+    end
+    N0 --> N1
+    N1 --> |finances| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> |measures| N12
+    N12 --> |compacts| N13
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N12 -.-> |grades| nest0_0
+    nest0_3 -.-> N10
+    nest1_0 -.-> nest1_1
+    N2 --> nest1_0
+    nest1_1 -.-> N9
+    N3 -.-> S0
+    S0 --> N13
+    S0 -.-> N6
+    S0 -.-> N12
+    N7 --> S1
+    S1 --> N10
+    S1 --> N11
+    S1 --> N9
+    S1 -.-> |reduces| N12
+    N3 -.-> |enforces| M0
+    N5 --> M0
+    N2 -.-> M0
+    N0 --> M0
+    M0 --> N13
+    N3 -.-> M1
+    N4 --> M1
+    N2 --> M1
+    N0 -.-> M1
+    M1 --> N7
+    N2 --> M2
+    N6 -.-> M2
+    N1 --> M2
+    N0 --> M2
+    M2 -.-> N12
+    style N0 fill:#E6EE9C,stroke:#CDDC39
+    style N1 fill:#E6EE9C,stroke:#CDDC39
+    style N2 fill:#E6EE9C,stroke:#CDDC39
+    style N3 fill:#E6EE9C,stroke:#CDDC39
+    style N4 fill:#F6F6F6,stroke:#CFCFCF
+    style N5 fill:#F6F6F6,stroke:#CFCFCF
+    style N6 fill:#E6EE9C,stroke:#CDDC39
+    style N7 fill:#DED7F0,stroke:#A188DB
+    style N8 fill:#DED7F0,stroke:#A188DB
+    style N9 fill:#DED7F0,stroke:#A188DB
+    style N10 fill:#DED7F0,stroke:#A188DB
+    style N11 fill:#E6EE9C,stroke:#CDDC39
+    style N12 fill:#E6EE9C,stroke:#CDDC39
+    style N13 fill:#DED7F0,stroke:#A188DB
+    style S0 fill:#DED7F0,stroke:#A188DB
+    style S1 fill:#DED7F0,stroke:#A188DB
+    style M0 fill:#E6EE9C,stroke:#CDDC39
+    style M1 fill:#DED7F0,stroke:#A188DB
+    style M2 fill:#DED7F0,stroke:#A188DB
+    style nest0_0 fill:#DED7F0,stroke:#A188DB
+    style nest0_1 fill:#DED7F0,stroke:#A188DB
+    style nest0_2 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_3 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_0 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_1 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CFCFCF,stroke-width:2px,fill:none;
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+    linkStyle 21 stroke:#CDDC39,stroke-width:2px,fill:none;
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+    linkStyle 25 stroke:#CDDC39,stroke-width:2px,fill:none;
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+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#CFCFCF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_353.mmd b/train/mermaid/hard/mermaid_353.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0232ceabbdde6aade924a034dbdda0b4f423ade1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_353.mmd
@@ -0,0 +1,158 @@
+graph RL
+    N0([Ecological Restoration])
+    N1[(Biomass Production from Forests)]
+    N2[Forest Fire Management]
+    N3[(Forestry Policy Development)]
+    N4[Urban Forestry Management]
+    N5[Logging Operations]
+    N6[Soil Conservation]
+    N7([Drone Surveying for Forests])
+    N8[Reforestation]
+    N9[(Indigenous Forestry Practices)]
+    N10(Sawmill Processing)
+    N11[Forest Inventory]
+    N12(Public Access Management)
+    N13[Non_Timber Forest Product Collection]
+    N14([Afforestation])
+    N15[[Forest Road Construction]]
+    N16([Biodiversity Conservation in Forests])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Sustainable Forest Management
+        nest0_0(Silviculture)
+        nest0_1([Forestry Education])
+        nest0_2[/Illegal Logging Prevention/]
+        nest0_3[[Forest Research]]
+    end
+    subgraph Tree Nursery Management
+        nest1_0[Wood Product Manufacturing]
+        nest1_1[(Timber Harvesting)]
+        nest1_2[[Wildlife Habitat Management]]
+        nest1_3[(GIS Mapping for Forestry)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> |develops| N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> |transports| N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N13 -.-> nest0_0
+    nest0_3 --> N12
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N10 -.-> nest1_0
+    nest1_3 -.-> N8
+    N4 -.-> S0
+    S0 --> N8
+    S0 --> N10
+    N7 -.-> S1
+    S1 --> N11
+    S1 --> |prevents| N9
+    N9 -.-> S2
+    S2 -.-> N11
+    S2 -.-> N16
+    S2 --> N13
+    S2 -.-> N14
+    N4 --> M0
+    N0 --> M0
+    N9 --> M0
+    N1 --> M0
+    M0 -.-> N11
+    N2 --> M1
+    N0 -.-> M1
+    N1 --> M1
+    M1 -.-> N5
+    style N0 fill:#FBE9E7,stroke:#FF8A65
+    style N1 fill:#FBE9E7,stroke:#FF8A65
+    style N2 fill:#FBE9E7,stroke:#FF8A65
+    style N3 fill:#B3E5FC,stroke:#03A9F4
+    style N4 fill:#FBE9E7,stroke:#FF8A65
+    style N5 fill:#FBE9E7,stroke:#FF8A65
+    style N6 fill:#B3E5FC,stroke:#03A9F4
+    style N7 fill:#FFF3E0,stroke:#FFB74D
+    style N8 fill:#B3E5FC,stroke:#03A9F4
+    style N9 fill:#FFF3E0,stroke:#FFB74D
+    style N10 fill:#FFF3E0,stroke:#FFB74D
+    style N11 fill:#FFF3E0,stroke:#FFB74D
+    style N12 fill:#B3E5FC,stroke:#03A9F4
+    style N13 fill:#B3E5FC,stroke:#03A9F4
+    style N14 fill:#FFF3E0,stroke:#FFB74D
+    style N15 fill:#FBE9E7,stroke:#FF8A65
+    style N16 fill:#B3E5FC,stroke:#03A9F4
+    style S0 fill:#B3E5FC,stroke:#03A9F4
+    style S1 fill:#FFF3E0,stroke:#FFB74D
+    style S2 fill:#B3E5FC,stroke:#03A9F4
+    style M0 fill:#FFF3E0,stroke:#FFB74D
+    style M1 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_2 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_3 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_2 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_3 fill:#B3E5FC,stroke:#03A9F4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB74D,stroke-width:2px,fill:none;
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+    linkStyle 5 stroke:#FF8A65,stroke-width:2px,fill:none;
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+    linkStyle 9 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 19 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 28 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFB74D,stroke-width:2px,fill:none;
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+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_354.mmd b/train/mermaid/hard/mermaid_354.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5956942bb4a9749be03838b07b5924cafdc18bd4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_354.mmd
@@ -0,0 +1,104 @@
+graph LR
+    N0([start])
+    N1[Forestry Equipment Maintenance]
+    N2[Urban Forestry Management]
+    N3{Tree Planting}
+    N4[(Forestry Policy Development)]
+    N5{Biodiversity Conservation in Forests}
+    N6(Forest Health Monitoring)
+    N7[(Climate Change Adaptation in Forests)]
+    N8[Public Access Management]
+    N9[Ecological Restoration]
+    N10(Indigenous Forestry Practices)
+    N11[Wildlife Habitat Management]
+    N12(Recreation Management)
+    N13{Forest Certification}
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Biomass Production from Forests
+        nest0_0[(Agroforestry Systems)]
+        nest0_1[/Illegal Logging Prevention/]
+        nest0_2(Timber Harvesting)
+        nest0_3(Soil Conservation)
+    end
+    subgraph Forest Land Use Planning
+        nest1_0[/Silviculture/]
+        nest1_1([Forestry Education])
+        nest1_2[(GIS Mapping for Forestry)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N4 -.-> nest0_0
+    nest0_3 -.-> N9
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N10 -.-> nest1_0
+    nest1_2 -.-> N3
+    N6 -.-> S0
+    S0 --> |no| N12
+    S0 -.-> N8
+    N11 -.-> S1
+    S1 -.-> N14
+    S1 --> N13
+    N7 --> M0
+    N5 --> M0
+    N3 -.-> M0
+    M0 --> N13
+    nest0_0 --> N13
+    N13 --> N3
+    style S0 fill:#C9EFEC,stroke:#6FE1D5
+    style S1 fill:#FFFDE7,stroke:#FBC02D
+    style M0 fill:#FFFDE7,stroke:#FBC02D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BA68C8,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_354.txt b/train/mermaid/hard/mermaid_354.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6d22b90a98a35ccb4ca9b21812987da05eb5e220
--- /dev/null
+++ b/train/mermaid/hard/mermaid_354.txt
@@ -0,0 +1,39 @@
+<Agroforestry Systems, connectedTo, Forest Certification>
+<Agroforestry Systems, connectedTo, Illegal Logging Prevention>
+<Agroforestry Systems, partOf, Biomass Production from Forests>
+<Biodiversity Conservation in Forests, connectedTo, Forest Certification>
+<Biodiversity Conservation in Forests, connectedTo, Forest Health Monitoring>
+<Climate Change Adaptation in Forests, connectedTo, Forest Certification>
+<Climate Change Adaptation in Forests, connectedTo, Public Access Management>
+<Ecological Restoration, connectedTo, Indigenous Forestry Practices>
+<Forest Certification, connectedTo, Tree Planting>
+<Forest Certification, connectedTo, end>
+<Forest Health Monitoring, connectedTo, Climate Change Adaptation in Forests>
+<Forest Health Monitoring, connectedTo, Public Access Management>
+<Forest Health Monitoring, no, Recreation Management>
+<Forestry Education, connectedTo, GIS Mapping for Forestry>
+<Forestry Education, partOf, Forest Land Use Planning>
+<Forestry Equipment Maintenance, connectedTo, Urban Forestry Management>
+<Forestry Policy Development, connectedTo, Agroforestry Systems>
+<Forestry Policy Development, connectedTo, Biodiversity Conservation in Forests>
+<GIS Mapping for Forestry, connectedTo, Tree Planting>
+<GIS Mapping for Forestry, partOf, Forest Land Use Planning>
+<Illegal Logging Prevention, connectedTo, Timber Harvesting>
+<Illegal Logging Prevention, partOf, Biomass Production from Forests>
+<Indigenous Forestry Practices, connectedTo, Silviculture>
+<Indigenous Forestry Practices, connectedTo, Wildlife Habitat Management>
+<Public Access Management, connectedTo, Ecological Restoration>
+<Recreation Management, connectedTo, Forest Certification>
+<Silviculture, connectedTo, Forestry Education>
+<Silviculture, partOf, Forest Land Use Planning>
+<Soil Conservation, connectedTo, Ecological Restoration>
+<Soil Conservation, partOf, Biomass Production from Forests>
+<Timber Harvesting, connectedTo, Soil Conservation>
+<Timber Harvesting, partOf, Biomass Production from Forests>
+<Tree Planting, connectedTo, Forest Certification>
+<Tree Planting, connectedTo, Forestry Policy Development>
+<Urban Forestry Management, connectedTo, Tree Planting>
+<Wildlife Habitat Management, connectedTo, Forest Certification>
+<Wildlife Habitat Management, connectedTo, Recreation Management>
+<Wildlife Habitat Management, connectedTo, end>
+<start, connectedTo, Forestry Equipment Maintenance>
diff --git a/train/mermaid/hard/mermaid_355.txt b/train/mermaid/hard/mermaid_355.txt
new file mode 100644
index 0000000000000000000000000000000000000000..33e3056126962119aeaaa525c12940034de13b1a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_355.txt
@@ -0,0 +1,38 @@
+<Afforestation, connectedTo, Pest and Disease Control>
+<Afforestation, partOf, Tree Nursery Management>
+<Agroforestry Systems, connectedTo, Silviculture>
+<Agroforestry Systems, partOf, Biodiversity Conservation in Forests>
+<Biomass Production from Forests, connectedTo, Recreation Management>
+<Biomass Production from Forests, partOf, Biodiversity Conservation in Forests>
+<Drone Surveying for Forests, connectedTo, Forestry Education>
+<Drone Surveying for Forests, connectedTo, Non_Timber Forest Product Collection>
+<Forest Carbon Accounting, connectedTo, Sawmill Processing>
+<Forest Fire Management, connectedTo, Forest Road Construction>
+<Forest Fire Management, connectedTo, Forestry Equipment Maintenance>
+<Forest Fire Management, connectedTo, Watershed Protection>
+<Forest Research, connectedTo, Urban Forestry Management>
+<Forest Road Construction, connectedTo, Agroforestry Systems>
+<Forest Road Construction, connectedTo, Indigenous Forestry Practices>
+<Forest Road Construction, connectedTo, Watershed Protection>
+<Forestry Education, connectedTo, Forestry Policy Development>
+<Forestry Equipment Maintenance, connectedTo, Forest Carbon Accounting>
+<Forestry Equipment Maintenance, connectedTo, Watershed Protection>
+<Forestry Policy Development, connectedTo, Soil Conservation>
+<Indigenous Forestry Practices, connectedTo, Forest Research>
+<Indigenous Forestry Practices, connectedTo, Forestry Equipment Maintenance>
+<Indigenous Forestry Practices, connectedTo, Non_Timber Forest Product Collection>
+<Indigenous Forestry Practices, connectedTo, Recreation Management>
+<Non_Timber Forest Product Collection, connectedTo, Forest Research>
+<Pest and Disease Control, connectedTo, Forestry Education>
+<Pest and Disease Control, partOf, Tree Nursery Management>
+<Recreation Management, connectedTo, Drone Surveying for Forests>
+<Recreation Management, connectedTo, Forestry Education>
+<Sawmill Processing, connectedTo, Afforestation>
+<Sawmill Processing, connectedTo, Watershed Protection>
+<Silviculture, connectedTo, Biomass Production from Forests>
+<Silviculture, partOf, Biodiversity Conservation in Forests>
+<Soil Conservation, connectedTo, Forestry Equipment Maintenance>
+<Sustainable Forest Management, connectedTo, Forest Fire Management>
+<Sustainable Forest Management, connectedTo, Watershed Protection>
+<Urban Forestry Management, connectedTo, Forestry Education>
+<Watershed Protection, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_358.mmd b/train/mermaid/hard/mermaid_358.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a15ba86b421c0d2416d3b66f09af14d3e372c581
--- /dev/null
+++ b/train/mermaid/hard/mermaid_358.mmd
@@ -0,0 +1,148 @@
+graph LR
+    N0([Climate Change Adaptation in Forests])
+    N1[(Forest Health Monitoring)]
+    N2([Drone Surveying for Forests])
+    N3[(Forest Road Construction)]
+    N4[[Reforestation]]
+    N5(Biomass Production from Forests)
+    N6(Biodiversity Conservation in Forests)
+    N7[[Ecological Restoration]]
+    N8[/Soil Conservation/]
+    N9[[Pest and Disease Control]]
+    N10[Public Access Management]
+    N11(Tree Nursery Management)
+    N12[[Illegal Logging Prevention]]
+    N13[(Forest Land Use Planning)]
+    N14([Sawmill Processing])
+    N15[Forest Carbon Accounting]
+    N16{Erosion Control}
+    N17([Recreation Management])
+    N18[[Urban Forestry Management]]
+    N19{Forest Certification}
+    N20([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Non_Timber Forest Product Collection
+        nest0_0([GIS Mapping for Forestry])
+        nest0_1([Forest Fire Management])
+    end
+    subgraph Wood Product Manufacturing
+        nest1_0(Forestry Policy Development)
+        nest1_1[[Logging Operations]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 -.-> N18
+    N18 -.-> N19
+    N19 --> N20
+    nest0_0 -.-> nest0_1
+    N19 -.-> nest0_0
+    nest0_1 -.-> N12
+    nest1_0 -.-> nest1_1
+    N16 --> nest1_0
+    nest1_1 --> N5
+    N5 -.-> S0
+    S0 -.-> N17
+    S0 --> N8
+    S0 -.-> N13
+    N17 -.-> S1
+    S1 --> N20
+    S1 --> N19
+    N3 -.-> M0
+    N6 --> M0
+    N8 -.-> M0
+    M0 -.-> N12
+    N12 --> M1
+    N3 -.-> M1
+    N8 --> M1
+    N1 -.-> M1
+    M1 --> N20
+    style N0 fill:#D3D7EB,stroke:#8C9EFF
+    style N1 fill:#C8E6C9,stroke:#4CAF50
+    style N2 fill:#D3D7EB,stroke:#8C9EFF
+    style N3 fill:#D3D7EB,stroke:#8C9EFF
+    style N4 fill:#D3D7EB,stroke:#8C9EFF
+    style N5 fill:#E1BEE7,stroke:#9C27B0
+    style N6 fill:#C8E6C9,stroke:#4CAF50
+    style N7 fill:#E1BEE7,stroke:#9C27B0
+    style N8 fill:#C8E6C9,stroke:#4CAF50
+    style N9 fill:#C8E6C9,stroke:#4CAF50
+    style N10 fill:#C8E6C9,stroke:#4CAF50
+    style N11 fill:#D3D7EB,stroke:#8C9EFF
+    style N12 fill:#D3D7EB,stroke:#8C9EFF
+    style N13 fill:#E1BEE7,stroke:#9C27B0
+    style N14 fill:#C8E6C9,stroke:#4CAF50
+    style N15 fill:#E1BEE7,stroke:#9C27B0
+    style N16 fill:#E1BEE7,stroke:#9C27B0
+    style N17 fill:#C8E6C9,stroke:#4CAF50
+    style N18 fill:#E1BEE7,stroke:#9C27B0
+    style N19 fill:#C8E6C9,stroke:#4CAF50
+    style N20 fill:#C8E6C9,stroke:#4CAF50
+    style S0 fill:#E1BEE7,stroke:#9C27B0
+    style S1 fill:#E1BEE7,stroke:#9C27B0
+    style M0 fill:#C8E6C9,stroke:#4CAF50
+    style M1 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_0 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_0 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_1 fill:#E1BEE7,stroke:#9C27B0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 37 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#4CAF50,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_358.txt b/train/mermaid/hard/mermaid_358.txt
new file mode 100644
index 0000000000000000000000000000000000000000..aae9e55e56babc72c95a736bc64caa547ced4b07
--- /dev/null
+++ b/train/mermaid/hard/mermaid_358.txt
@@ -0,0 +1,42 @@
+<Biodiversity Conservation in Forests, connectedTo, Ecological Restoration>
+<Biodiversity Conservation in Forests, connectedTo, Illegal Logging Prevention>
+<Biomass Production from Forests, connectedTo, Biodiversity Conservation in Forests>
+<Biomass Production from Forests, connectedTo, Forest Land Use Planning>
+<Biomass Production from Forests, connectedTo, Recreation Management>
+<Biomass Production from Forests, connectedTo, Soil Conservation>
+<Climate Change Adaptation in Forests, connectedTo, Forest Health Monitoring>
+<Drone Surveying for Forests, connectedTo, Forest Road Construction>
+<Ecological Restoration, connectedTo, Soil Conservation>
+<Erosion Control, connectedTo, Forestry Policy Development>
+<Erosion Control, connectedTo, Recreation Management>
+<Forest Carbon Accounting, connectedTo, Erosion Control>
+<Forest Certification, connectedTo, GIS Mapping for Forestry>
+<Forest Certification, connectedTo, end>
+<Forest Fire Management, connectedTo, Illegal Logging Prevention>
+<Forest Fire Management, partOf, Non_Timber Forest Product Collection>
+<Forest Health Monitoring, connectedTo, Drone Surveying for Forests>
+<Forest Health Monitoring, connectedTo, end>
+<Forest Land Use Planning, connectedTo, Sawmill Processing>
+<Forest Road Construction, connectedTo, Illegal Logging Prevention>
+<Forest Road Construction, connectedTo, Reforestation>
+<Forest Road Construction, connectedTo, end>
+<Forestry Policy Development, connectedTo, Logging Operations>
+<Forestry Policy Development, partOf, Wood Product Manufacturing>
+<GIS Mapping for Forestry, connectedTo, Forest Fire Management>
+<GIS Mapping for Forestry, partOf, Non_Timber Forest Product Collection>
+<Illegal Logging Prevention, connectedTo, Forest Land Use Planning>
+<Illegal Logging Prevention, connectedTo, end>
+<Logging Operations, connectedTo, Biomass Production from Forests>
+<Logging Operations, partOf, Wood Product Manufacturing>
+<Pest and Disease Control, connectedTo, Public Access Management>
+<Public Access Management, connectedTo, Tree Nursery Management>
+<Recreation Management, connectedTo, Forest Certification>
+<Recreation Management, connectedTo, Urban Forestry Management>
+<Recreation Management, connectedTo, end>
+<Reforestation, connectedTo, Biomass Production from Forests>
+<Sawmill Processing, connectedTo, Forest Carbon Accounting>
+<Soil Conservation, connectedTo, Illegal Logging Prevention>
+<Soil Conservation, connectedTo, Pest and Disease Control>
+<Soil Conservation, connectedTo, end>
+<Tree Nursery Management, connectedTo, Illegal Logging Prevention>
+<Urban Forestry Management, connectedTo, Forest Certification>
diff --git a/train/mermaid/hard/mermaid_360.mmd b/train/mermaid/hard/mermaid_360.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d0997f3fa7dfc5d4c094af24d2f52a5468abd404
--- /dev/null
+++ b/train/mermaid/hard/mermaid_360.mmd
@@ -0,0 +1,158 @@
+graph RL
+    N0([start])
+    N1[(Soil Conservation)]
+    N2{Ecological Restoration}
+    N3(Reforestation)
+    N4(Carbon Sequestration Monitoring)
+    N5([Forestry Policy Development])
+    N6[Forest Inventory]
+    N7[(Forest Land Use Planning)]
+    N8(Forest Research)
+    N9[/Silviculture/]
+    N10(GIS Mapping for Forestry)
+    N11([Urban Forestry Management])
+    N12(Tree Nursery Management)
+    N13([Sustainable Forest Management])
+    N14[Pest and Disease Control]
+    N15(Wood Product Manufacturing)
+    N16([Forest Health Monitoring])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Forest Certification
+        nest0_0[Forestry Equipment Maintenance]
+        nest0_1([Biodiversity Conservation in Forests])
+        nest0_2[Forest Carbon Accounting]
+    end
+    subgraph Non_Timber Forest Product Collection
+        nest1_0[/Wildlife Habitat Management/]
+        nest1_1(Forest Road Construction)
+        nest1_2(Logging Operations)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> |constructs| N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> |prevents| nest0_1
+    nest0_1 -.-> nest0_2
+    N1 --> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N2 --> nest1_0
+    nest1_2 -.-> N13
+    N0 --> S0
+    S0 --> N13
+    S0 -.-> N10
+    N8 -.-> S1
+    S1 --> N15
+    S1 --> N11
+    S1 -.-> N12
+    N8 -.-> S2
+    S2 -.-> N11
+    S2 -.-> N14
+    S2 -.-> |thins| N10
+    N2 -.-> M0
+    N0 --> M0
+    M0 --> N14
+    N7 -.-> |regulates| M1
+    N0 -.-> M1
+    N4 --> M1
+    N5 -.-> M1
+    M1 -.-> N11
+    N2 -.-> M2
+    N5 -.-> M2
+    N0 -.-> M2
+    M2 -.-> N8
+    style N0 fill:#C9EFEC,stroke:#6FE1D5
+    style N1 fill:#EFEBE9,stroke:#A1887F
+    style N2 fill:#EFEBE9,stroke:#A1887F
+    style N3 fill:#F8FDD3,stroke:#D3EB9F
+    style N4 fill:#F8FDD3,stroke:#D3EB9F
+    style N5 fill:#C9EFEC,stroke:#6FE1D5
+    style N6 fill:#F8FDD3,stroke:#D3EB9F
+    style N7 fill:#EFEBE9,stroke:#A1887F
+    style N8 fill:#C9EFEC,stroke:#6FE1D5
+    style N9 fill:#EFEBE9,stroke:#A1887F
+    style N10 fill:#C9EFEC,stroke:#6FE1D5
+    style N11 fill:#EFEBE9,stroke:#A1887F
+    style N12 fill:#C9EFEC,stroke:#6FE1D5
+    style N13 fill:#C9EFEC,stroke:#6FE1D5
+    style N14 fill:#EFEBE9,stroke:#A1887F
+    style N15 fill:#C9EFEC,stroke:#6FE1D5
+    style N16 fill:#EFEBE9,stroke:#A1887F
+    style S0 fill:#EFEBE9,stroke:#A1887F
+    style S1 fill:#F8FDD3,stroke:#D3EB9F
+    style S2 fill:#C9EFEC,stroke:#6FE1D5
+    style M0 fill:#F8FDD3,stroke:#D3EB9F
+    style M1 fill:#EFEBE9,stroke:#A1887F
+    style M2 fill:#EFEBE9,stroke:#A1887F
+    style nest0_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest0_1 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_2 fill:#EFEBE9,stroke:#A1887F
+    style nest1_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_1 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_2 fill:#EFEBE9,stroke:#A1887F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A1887F,stroke-width:2px,fill:none;
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+    linkStyle 12 stroke:#D3EB9F,stroke-width:2px,fill:none;
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+    linkStyle 15 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#D3EB9F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_361.txt b/train/mermaid/hard/mermaid_361.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0db0144e088a0bbcaac7afce9225526e2ab091ff
--- /dev/null
+++ b/train/mermaid/hard/mermaid_361.txt
@@ -0,0 +1,32 @@
+<Allergy Testing, connectedTo, Microchipping>
+<Anesthesia Administration, connectedTo, Client Communication>
+<Anesthesia Administration, partOf, Nutritional Counseling>
+<Animal Welfare Assessment, connectedTo, Allergy Testing>
+<Animal Welfare Assessment, documents, Microchipping>
+<Behavioral Counseling, connectedTo, Vaccination>
+<Client Communication, connectedTo, Reproductive Services>
+<Client Communication, partOf, Nutritional Counseling>
+<Dental Care, connectedTo, Surgery>
+<Farm Animal Health Management, connectedTo, Animal Welfare Assessment>
+<Farm Animal Health Management, connectedTo, Microchipping>
+<Farm Animal Health Management, connectedTo, Veterinary Technology Training>
+<Farm Animal Health Management, dresses, Medical Record Keeping>
+<Laboratory Testing, connectedTo, Dental Care>
+<Laboratory Testing, connectedTo, Microchipping>
+<Laboratory Testing, connectedTo, Spay or Neuter Procedure>
+<Medical Record Keeping, connectedTo, Dental Care>
+<Medical Record Keeping, consults, Microchipping>
+<Medical Record Keeping, diagnoses, Surgery>
+<Medical Record Keeping, manages, Veterinary Pathology>
+<Medical Treatment, connectedTo, Surgery>
+<Medical Treatment, partOf, Livestock Disease Prevention>
+<Microchipping, connectedTo, Anesthesia Administration>
+<Microchipping, connectedTo, Veterinary Technology Training>
+<Reproductive Services, connectedTo, Behavioral Counseling>
+<Reproductive Services, partOf, Nutritional Counseling>
+<Spay or Neuter Procedure, connectedTo, Medical Treatment>
+<Spay or Neuter Procedure, partOf, Livestock Disease Prevention>
+<Surgery, connectedTo, Animal Welfare Assessment>
+<Surgery, connectedTo, Microchipping>
+<Vaccination, performs, Laboratory Testing>
+<Veterinary Pathology, connectedTo, Behavioral Counseling>
diff --git a/train/mermaid/hard/mermaid_362.txt b/train/mermaid/hard/mermaid_362.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9784208772deaada1c2db90cba2f64a4d8c00b55
--- /dev/null
+++ b/train/mermaid/hard/mermaid_362.txt
@@ -0,0 +1,37 @@
+<Allergy Testing, connectedTo, Client Communication>
+<Allergy Testing, connectedTo, Pain Management>
+<Allergy Testing, connectedTo, Reproductive Services>
+<Allergy Testing, connectedTo, end>
+<Anesthesia Administration, connectedTo, Prescription>
+<Anesthesia Administration, partOf, Spay or Neuter Procedure>
+<Behavioral Counseling, connectedTo, Livestock Disease Prevention>
+<Behavioral Counseling, partOf, Imaging Services>
+<Client Communication, connectedTo, end>
+<Diagnosis, connectedTo, Nutritional Counseling>
+<Diagnosis, connectedTo, Prescription>
+<Diagnosis, connectedTo, Reproductive Services>
+<Emergency Vet Services, connectedTo, Diagnosis>
+<Emergency Vet Services, connectedTo, Nutritional Counseling>
+<Euthanasia Services, connectedTo, Allergy Testing>
+<Livestock Disease Prevention, connectedTo, Diagnosis>
+<Livestock Disease Prevention, partOf, Imaging Services>
+<Microchipping, connectedTo, Sterilization Protocols>
+<Nutritional Counseling, connectedTo, Prescription>
+<Pain Management, connectedTo, Behavioral Counseling>
+<Pain Management, partOf, Imaging Services>
+<Pet Check_up, connectedTo, Anesthesia Administration>
+<Pet Check_up, partOf, Spay or Neuter Procedure>
+<Prescription, connectedTo, Euthanasia Services>
+<Reproductive Services, connectedTo, Client Communication>
+<Sterilization Protocols, connectedTo, Emergency Vet Services>
+<Sterilization Protocols, connectedTo, Nutritional Counseling>
+<Sterilization Protocols, connectedTo, Vaccination>
+<Vaccination, connectedTo, Emergency Vet Services>
+<Vaccination, connectedTo, Nutritional Counseling>
+<Vaccination, connectedTo, Pet Check_up>
+<Vaccination, connectedTo, Veterinary Technology Training>
+<Veterinary Technology Training, connectedTo, Emergency Vet Services>
+<start, connectedTo, Emergency Vet Services>
+<start, connectedTo, Microchipping>
+<start, connectedTo, Nutritional Counseling>
+<start, connectedTo, Vaccination>
diff --git a/train/mermaid/hard/mermaid_363.mmd b/train/mermaid/hard/mermaid_363.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6abe089ba948f94c375ca4c8b5933b95ae02a613
--- /dev/null
+++ b/train/mermaid/hard/mermaid_363.mmd
@@ -0,0 +1,96 @@
+graph LR
+    N0([Vaccination])
+    N1[Herd Health Programs]
+    N2[[Veterinary Technology Training]]
+    N3[Hospice Care for Animals]
+    N4[Biosecurity Measures]
+    N5[Prescription]
+    N6[Pet Check_up]
+    N7[Animal Welfare Assessment]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Farm Animal Health Management
+        nest0_0{Euthanasia Services}
+        nest0_1(Medical Record Keeping)
+        nest0_2(Sterilization Protocols)
+    end
+    subgraph Dental Care
+        nest1_0[Public Health Vet Services]
+        nest1_1([Allergy Testing])
+        nest1_2[(Client Communication)]
+        nest1_3[/Animal Sheltering Consultation/]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N5 --> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N2 -.-> nest1_0
+    nest1_3 --> N4
+    N1 --> S0
+    S0 --> N6
+    S0 --> N5
+    S0 -.-> N7
+    N0 --> S1
+    S1 --> N4
+    S1 -.-> N7
+    N0 --> M0
+    N1 --> M0
+    M0 --> N5
+    nest1_0 -.-> N7
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#E8F0FF,stroke:#A2D0FF
+    style N2 fill:#FFFAE0,stroke:#FFE470
+    style N3 fill:#CADEDE,stroke:#94C0C0
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#CADEDE,stroke:#94C0C0
+    style N6 fill:#FFFAE0,stroke:#FFE470
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style S0 fill:#FFFAE0,stroke:#FFE470
+    style S1 fill:#E8F0FF,stroke:#A2D0FF
+    style M0 fill:#FFFAE0,stroke:#FFE470
+    style nest0_0 fill:#FFFAE0,stroke:#FFE470
+    style nest0_1 fill:#FFFAE0,stroke:#FFE470
+    style nest0_2 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_2 fill:#CADEDE,stroke:#94C0C0
+    style nest1_3 fill:#FFFAE0,stroke:#FFE470
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_364.mmd b/train/mermaid/hard/mermaid_364.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..071cdd65fedfe6f437c6cbf3e5629f83eb367326
--- /dev/null
+++ b/train/mermaid/hard/mermaid_364.mmd
@@ -0,0 +1,104 @@
+graph TD
+    N0([start])
+    N1[/Herd Health Programs/]
+    N2(Pet Check_up)
+    N3{Farm Animal Health Management}
+    N4{Reproductive Services}
+    N5[[Imaging Services]]
+    N6{Wildlife Rehabilitation}
+    N7[(Biosecurity Measures)]
+    N8[[Post_operative Care]]
+    N9[Toxicology Testing]
+    N10[Medical Treatment]
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Pre_surgical Assessment
+        nest0_0[Equine Care]
+        nest0_1[(Public Health Vet Services)]
+        nest0_2(Spay or Neuter Procedure)
+        nest0_3(Client Communication)
+    end
+    subgraph Laboratory Testing
+        nest1_0[[Medical Record Keeping]]
+        nest1_1(Anesthesia Administration)
+        nest1_2[Veterinary Technology Training]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N6 --> nest0_0
+    nest0_3 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 -.-> N9
+    N0 -.-> S0
+    S0 -.-> N5
+    S0 --> N2
+    N3 -.-> S1
+    S1 -.-> N9
+    S1 -.-> |recommends| N10
+    N0 --> M1
+    N1 -.-> M1
+    M1 -.-> N3
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#FFF6D9,stroke:#FFCC7A
+    style N2 fill:#CADEDE,stroke:#94C0C0
+    style N3 fill:#E4E0DF,stroke:#BDAFA8
+    style N4 fill:#CADEDE,stroke:#94C0C0
+    style N5 fill:#FFF6D9,stroke:#FFCC7A
+    style N6 fill:#FFF6D9,stroke:#FFCC7A
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style N8 fill:#FFF6D9,stroke:#FFCC7A
+    style N9 fill:#CADEDE,stroke:#94C0C0
+    style N10 fill:#E4E0DF,stroke:#BDAFA8
+    style S0 fill:#CADEDE,stroke:#94C0C0
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style M1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_2 fill:#CADEDE,stroke:#94C0C0
+    style nest0_3 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    style nest1_2 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BDAFA8,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_364.txt b/train/mermaid/hard/mermaid_364.txt
new file mode 100644
index 0000000000000000000000000000000000000000..24f217d0ae7c4d65a466c3432dbc0dcdb0cd11a2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_364.txt
@@ -0,0 +1,32 @@
+<Anesthesia Administration, connectedTo, Veterinary Technology Training>
+<Anesthesia Administration, partOf, Laboratory Testing>
+<Biosecurity Measures, connectedTo, Post_operative Care>
+<Client Communication, connectedTo, Post_operative Care>
+<Client Communication, partOf, Pre_surgical Assessment>
+<Equine Care, connectedTo, Public Health Vet Services>
+<Equine Care, partOf, Pre_surgical Assessment>
+<Farm Animal Health Management, connectedTo, Reproductive Services>
+<Farm Animal Health Management, connectedTo, Toxicology Testing>
+<Farm Animal Health Management, recommends, Medical Treatment>
+<Herd Health Programs, connectedTo, Farm Animal Health Management>
+<Herd Health Programs, connectedTo, Pet Check_up>
+<Imaging Services, connectedTo, Wildlife Rehabilitation>
+<Medical Record Keeping, connectedTo, Anesthesia Administration>
+<Medical Record Keeping, partOf, Laboratory Testing>
+<Pet Check_up, connectedTo, Farm Animal Health Management>
+<Post_operative Care, connectedTo, Toxicology Testing>
+<Public Health Vet Services, connectedTo, Spay or Neuter Procedure>
+<Public Health Vet Services, partOf, Pre_surgical Assessment>
+<Reproductive Services, connectedTo, Imaging Services>
+<Reproductive Services, connectedTo, Medical Record Keeping>
+<Spay or Neuter Procedure, connectedTo, Client Communication>
+<Spay or Neuter Procedure, partOf, Pre_surgical Assessment>
+<Toxicology Testing, connectedTo, Medical Treatment>
+<Veterinary Technology Training, connectedTo, Toxicology Testing>
+<Veterinary Technology Training, partOf, Laboratory Testing>
+<Wildlife Rehabilitation, connectedTo, Biosecurity Measures>
+<Wildlife Rehabilitation, connectedTo, Equine Care>
+<start, connectedTo, Farm Animal Health Management>
+<start, connectedTo, Herd Health Programs>
+<start, connectedTo, Imaging Services>
+<start, connectedTo, Pet Check_up>
diff --git a/train/mermaid/hard/mermaid_367.mmd b/train/mermaid/hard/mermaid_367.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e6e0ccc566bb134c5200e827b0440883e16fa0e8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_367.mmd
@@ -0,0 +1,148 @@
+graph RL
+    N0([start])
+    N1{Livestock Disease Prevention}
+    N2[(Allergy Testing)]
+    N3[Toxicology Testing]
+    N4([Nutritional Counseling])
+    N5[/Equine Care/]
+    N6[/Client Communication/]
+    N7(Spay or Neuter Procedure)
+    N8(Sterilization Protocols)
+    N9[(Animal Sheltering Consultation)]
+    N10[[Vaccination]]
+    N11(Genetic Counseling for Animals)
+    N12[(Wildlife Rehabilitation)]
+    N13[Euthanasia Services]
+    N14{Laboratory Testing}
+    N15([Diagnosis])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Dental Care
+        nest0_0[/Emergency Vet Services/]
+        nest0_1[[Medical Treatment]]
+        nest0_2[(Anesthesia Administration)]
+    end
+    subgraph Reproductive Services
+        nest1_0[Hospice Care for Animals]
+        nest1_1[[Medical Record Keeping]]
+        nest1_2[[Veterinary Pathology]]
+        nest1_3([Veterinary Technology Training])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> |rescues| N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> |treats| N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N8 --> |sedates| nest0_0
+    nest0_2 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 -.-> N15
+    N11 --> S0
+    S0 --> N13
+    S0 -.-> N14
+    S0 --> N15
+    N9 --> S1
+    S1 -.-> N11
+    S1 -.-> N15
+    N4 --> S2
+    S2 --> N13
+    S2 -.-> N9
+    S2 --> N8
+    S2 -.-> N7
+    N8 -.-> M0
+    N6 -.-> M0
+    N10 -.-> M0
+    M0 --> N14
+    N4 --> M1
+    N2 --> M1
+    M1 -.-> N6
+    style N0 fill:#FFEBEE,stroke:#E57373
+    style N1 fill:#C8EDFF,stroke:#82DAFF
+    style N2 fill:#FFEBEE,stroke:#E57373
+    style N3 fill:#FFEBEE,stroke:#E57373
+    style N4 fill:#FFEBEE,stroke:#E57373
+    style N5 fill:#C8EDFF,stroke:#82DAFF
+    style N6 fill:#FFEBEE,stroke:#E57373
+    style N7 fill:#FFDAB9,stroke:#FFC085
+    style N8 fill:#FFDAB9,stroke:#FFC085
+    style N9 fill:#FFDAB9,stroke:#FFC085
+    style N10 fill:#FFDAB9,stroke:#FFC085
+    style N11 fill:#FFEBEE,stroke:#E57373
+    style N12 fill:#FFEBEE,stroke:#E57373
+    style N13 fill:#FFDAB9,stroke:#FFC085
+    style N14 fill:#FFDAB9,stroke:#FFC085
+    style N15 fill:#C8EDFF,stroke:#82DAFF
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#C8EDFF,stroke:#82DAFF
+    style S2 fill:#C8EDFF,stroke:#82DAFF
+    style M0 fill:#C8EDFF,stroke:#82DAFF
+    style M1 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_0 fill:#FFDAB9,stroke:#FFC085
+    style nest0_1 fill:#FFDAB9,stroke:#FFC085
+    style nest0_2 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_0 fill:#FFEBEE,stroke:#E57373
+    style nest1_1 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_2 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_3 fill:#FFEBEE,stroke:#E57373
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#82DAFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_368.mmd b/train/mermaid/hard/mermaid_368.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d1d5b7b3683d21110f3a748c919abfac6c3c0899
--- /dev/null
+++ b/train/mermaid/hard/mermaid_368.mmd
@@ -0,0 +1,142 @@
+graph LR
+    N0([start])
+    N1[/Veterinary Pathology/]
+    N2{Dental Care}
+    N3(Equine Care)
+    N4[(Veterinary Technology Training)]
+    N5([Biosecurity Measures])
+    N6[(Reproductive Services)]
+    N7(Euthanasia Services)
+    N8{Spay or Neuter Procedure}
+    N9(Farm Animal Health Management)
+    N10[Hospice Care for Animals]
+    N11[Allergy Testing]
+    N12(Pain Management)
+    N13{Microchipping}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Imaging Services
+        nest0_0[Herd Health Programs]
+        nest0_1(Prescription)
+        nest0_2[/Medical Treatment/]
+        nest0_3(Animal Welfare Assessment)
+    end
+    subgraph Diagnosis
+        nest1_0[[Parasite Control]]
+        nest1_1[Nutritional Counseling]
+        nest1_2(Emergency Vet Services)
+        nest1_3[(Public Health Vet Services)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> |certifies| nest0_3
+    N7 -.-> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N11 --> nest1_0
+    nest1_3 -.-> |sedates| N8
+    N0 -.-> S0
+    S0 -.-> N9
+    S0 -.-> |rescues| N13
+    S0 -.-> |inspects| N11
+    S0 --> N4
+    N0 -.-> S1
+    S1 --> N9
+    S1 --> N4
+    S1 -.-> N13
+    S1 --> N12
+    N2 --> S2
+    S2 -.-> |bills| N10
+    S2 -.-> N4
+    S2 -.-> N8
+    S2 -.-> N5
+    N3 --> M1
+    N6 --> M1
+    N2 -.-> M1
+    M1 -.-> N8
+    style N0 fill:#F8FDD3,stroke:#D3EB9F
+    style N1 fill:#FDFCEB,stroke:#EAEFA5
+    style N2 fill:#F8FDD3,stroke:#D3EB9F
+    style N3 fill:#F8FDD3,stroke:#D3EB9F
+    style N4 fill:#FFFDE7,stroke:#FBC02D
+    style N5 fill:#FFFDE7,stroke:#FBC02D
+    style N6 fill:#FFFDE7,stroke:#FBC02D
+    style N7 fill:#FFFDE7,stroke:#FBC02D
+    style N8 fill:#FFFDE7,stroke:#FBC02D
+    style N9 fill:#FDFCEB,stroke:#EAEFA5
+    style N10 fill:#FFFDE7,stroke:#FBC02D
+    style N11 fill:#F8FDD3,stroke:#D3EB9F
+    style N12 fill:#FFFDE7,stroke:#FBC02D
+    style N13 fill:#FDFCEB,stroke:#EAEFA5
+    style S0 fill:#F8FDD3,stroke:#D3EB9F
+    style S1 fill:#FDFCEB,stroke:#EAEFA5
+    style S2 fill:#F8FDD3,stroke:#D3EB9F
+    style M1 fill:#FDFCEB,stroke:#EAEFA5
+    style nest0_0 fill:#FFFDE7,stroke:#FBC02D
+    style nest0_1 fill:#F8FDD3,stroke:#D3EB9F
+    style nest0_2 fill:#FFFDE7,stroke:#FBC02D
+    style nest0_3 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_0 fill:#FDFCEB,stroke:#EAEFA5
+    style nest1_1 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_2 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_3 fill:#FFFDE7,stroke:#FBC02D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#EAEFA5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_368.txt b/train/mermaid/hard/mermaid_368.txt
new file mode 100644
index 0000000000000000000000000000000000000000..46a957fe76a545fb9e3aae5e82bfb0a5cf8d85e9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_368.txt
@@ -0,0 +1,43 @@
+<Allergy Testing, connectedTo, Pain Management>
+<Allergy Testing, connectedTo, Parasite Control>
+<Animal Welfare Assessment, connectedTo, Veterinary Technology Training>
+<Animal Welfare Assessment, partOf, Imaging Services>
+<Biosecurity Measures, connectedTo, Reproductive Services>
+<Dental Care, bills, Hospice Care for Animals>
+<Dental Care, connectedTo, Biosecurity Measures>
+<Dental Care, connectedTo, Equine Care>
+<Dental Care, connectedTo, Spay or Neuter Procedure>
+<Dental Care, connectedTo, Veterinary Technology Training>
+<Emergency Vet Services, connectedTo, Public Health Vet Services>
+<Emergency Vet Services, partOf, Diagnosis>
+<Equine Care, connectedTo, Spay or Neuter Procedure>
+<Equine Care, connectedTo, Veterinary Technology Training>
+<Euthanasia Services, connectedTo, Herd Health Programs>
+<Euthanasia Services, connectedTo, Spay or Neuter Procedure>
+<Farm Animal Health Management, connectedTo, Hospice Care for Animals>
+<Herd Health Programs, connectedTo, Prescription>
+<Herd Health Programs, partOf, Imaging Services>
+<Hospice Care for Animals, connectedTo, Allergy Testing>
+<Medical Treatment, certifies, Animal Welfare Assessment>
+<Medical Treatment, partOf, Imaging Services>
+<Nutritional Counseling, connectedTo, Emergency Vet Services>
+<Nutritional Counseling, partOf, Diagnosis>
+<Pain Management, connectedTo, Microchipping>
+<Parasite Control, connectedTo, Nutritional Counseling>
+<Parasite Control, partOf, Diagnosis>
+<Prescription, connectedTo, Medical Treatment>
+<Prescription, partOf, Imaging Services>
+<Public Health Vet Services, partOf, Diagnosis>
+<Public Health Vet Services, sedates, Spay or Neuter Procedure>
+<Reproductive Services, connectedTo, Euthanasia Services>
+<Reproductive Services, connectedTo, Spay or Neuter Procedure>
+<Spay or Neuter Procedure, connectedTo, Farm Animal Health Management>
+<Veterinary Pathology, connectedTo, Dental Care>
+<Veterinary Technology Training, connectedTo, Biosecurity Measures>
+<start, connectedTo, Farm Animal Health Management>
+<start, connectedTo, Microchipping>
+<start, connectedTo, Pain Management>
+<start, connectedTo, Veterinary Pathology>
+<start, connectedTo, Veterinary Technology Training>
+<start, inspects, Allergy Testing>
+<start, rescues, Microchipping>
diff --git a/train/mermaid/hard/mermaid_369.mmd b/train/mermaid/hard/mermaid_369.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d68e9a72fe19ce120f247ecd9c8aa9413c68a3ac
--- /dev/null
+++ b/train/mermaid/hard/mermaid_369.mmd
@@ -0,0 +1,146 @@
+graph BT
+    N0([start])
+    N1[Behavior Management]
+    N2[(Hygiene Practices)]
+    N3[(Staff Training and Certification)]
+    N4(Special Needs Accommodation)
+    N5[/Teacher_Child Ratio Management/]
+    N6[(Child Development Assessment)]
+    N7{Outdoor Play Supervision}
+    N8[Story Time Reading]
+    N9[[Group Activities Coordination]]
+    N10([Social Skill Development])
+    N11(Child Protection Policies)
+    N12[[Safety Supervision]]
+    N13(Early Literacy Programs)
+    N14[Nutritional Meal Preparation]
+    N15([Parent_Teacher Conferences])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Childcare Facility Licensing
+        nest0_0[(Individualized Attention)]
+        nest0_1(After_School Programs)
+        nest0_2[[Potty Training Assistance]]
+        nest0_3([Curriculum Planning])
+    end
+    subgraph Nap Time Supervision
+        nest1_0[Diaper Changing]
+        nest1_1([Learning Material Selection])
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> |organizes| N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> |supervises| N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> |advises| N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N9 -.-> nest0_0
+    nest0_3 --> N6
+    nest1_0 --> nest1_1
+    N14 --> nest1_0
+    nest1_1 -.-> N6
+    N0 -.-> S0
+    S0 -.-> N15
+    S0 --> |engages| N9
+    N8 --> S1
+    S1 -.-> N12
+    S1 -.-> N10
+    N6 --> S2
+    S2 -.-> N12
+    S2 --> N10
+    N0 -.-> |complies| M0
+    N1 -.-> M0
+    M0 -.-> N3
+    N5 -.-> M1
+    N3 --> M1
+    M1 --> N9
+    N1 --> M2
+    N0 -.-> M2
+    N2 -.-> M2
+    M2 -.-> N4
+    style N0 fill:#FDFCEB,stroke:#EAEFA5
+    style N1 fill:#CADEDE,stroke:#94C0C0
+    style N2 fill:#FDFCEB,stroke:#EAEFA5
+    style N3 fill:#CADEDE,stroke:#94C0C0
+    style N4 fill:#C8E6C9,stroke:#388E3C
+    style N5 fill:#C8E6C9,stroke:#388E3C
+    style N6 fill:#FDFCEB,stroke:#EAEFA5
+    style N7 fill:#C8E6C9,stroke:#388E3C
+    style N8 fill:#C8E6C9,stroke:#388E3C
+    style N9 fill:#FDFCEB,stroke:#EAEFA5
+    style N10 fill:#C8E6C9,stroke:#388E3C
+    style N11 fill:#FDFCEB,stroke:#EAEFA5
+    style N12 fill:#CADEDE,stroke:#94C0C0
+    style N13 fill:#FDFCEB,stroke:#EAEFA5
+    style N14 fill:#CADEDE,stroke:#94C0C0
+    style N15 fill:#FDFCEB,stroke:#EAEFA5
+    style S0 fill:#C8E6C9,stroke:#388E3C
+    style S1 fill:#C8E6C9,stroke:#388E3C
+    style S2 fill:#C8E6C9,stroke:#388E3C
+    style M0 fill:#FDFCEB,stroke:#EAEFA5
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    style M2 fill:#CADEDE,stroke:#94C0C0
+    style nest0_0 fill:#FDFCEB,stroke:#EAEFA5
+    style nest0_1 fill:#CADEDE,stroke:#94C0C0
+    style nest0_2 fill:#CADEDE,stroke:#94C0C0
+    style nest0_3 fill:#C8E6C9,stroke:#388E3C
+    style nest1_0 fill:#CADEDE,stroke:#94C0C0
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#EAEFA5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_37.mmd b/train/mermaid/hard/mermaid_37.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0cdaf83a065a8bfa0357569aeb2bc8dc7a963232
--- /dev/null
+++ b/train/mermaid/hard/mermaid_37.mmd
@@ -0,0 +1,90 @@
+graph BT
+    N0([start])
+    N1[Add to Cart]
+    N2([Data Analytics Reporting])
+    N3[Search Engine Optimization]
+    N4[/Shipment/]
+    N5(Invoice Generation)
+    N6[Customer Segmentation]
+    N7[[Fraud Detection]]
+    N8[(Cart Abandonment)]
+    N9[Social Media Integration]
+    N10(Up_selling Offer)
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Affiliate Marketing
+        nest0_0[Wishlist Management]
+        nest0_1{Mobile App Interaction}
+        nest0_2([Delivery Tracking])
+    end
+    subgraph Price Adjustment
+        nest1_0[/Warehouse Management/]
+        nest1_1([Order Confirmation])
+        nest1_2[Refund Process]
+        nest1_3[[Inventory Update]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> |yes| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N2 -.-> nest0_0
+    nest0_2 -.-> N9
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N2 -.-> nest1_0
+    nest1_3 --> N1
+    N3 -.-> S0
+    S0 --> N10
+    S0 -.-> N6
+    N3 -.-> S1
+    S1 --> N10
+    S1 -.-> N7
+    S1 -.-> N8
+    N3 --> M1
+    N7 --> M1
+    N0 -.-> |yes| M1
+    M1 -.-> N10
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#DDCEDD,stroke:#AF56A6
+    style M1 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_37.txt b/train/mermaid/hard/mermaid_37.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f78b15eae6d7b8db625ed02530ffdfb57231bd1d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_37.txt
@@ -0,0 +1,32 @@
+<Add to Cart, connectedTo, Data Analytics Reporting>
+<Cart Abandonment, connectedTo, Social Media Integration>
+<Customer Segmentation, connectedTo, Fraud Detection>
+<Data Analytics Reporting, connectedTo, Warehouse Management>
+<Data Analytics Reporting, connectedTo, Wishlist Management>
+<Data Analytics Reporting, yes, Search Engine Optimization>
+<Delivery Tracking, connectedTo, Social Media Integration>
+<Delivery Tracking, partOf, Affiliate Marketing>
+<Fraud Detection, connectedTo, Cart Abandonment>
+<Fraud Detection, connectedTo, Up_selling Offer>
+<Inventory Update, connectedTo, Add to Cart>
+<Inventory Update, partOf, Price Adjustment>
+<Invoice Generation, connectedTo, Customer Segmentation>
+<Mobile App Interaction, connectedTo, Delivery Tracking>
+<Mobile App Interaction, partOf, Affiliate Marketing>
+<Order Confirmation, connectedTo, Refund Process>
+<Order Confirmation, partOf, Price Adjustment>
+<Refund Process, connectedTo, Inventory Update>
+<Refund Process, partOf, Price Adjustment>
+<Search Engine Optimization, connectedTo, Cart Abandonment>
+<Search Engine Optimization, connectedTo, Customer Segmentation>
+<Search Engine Optimization, connectedTo, Fraud Detection>
+<Search Engine Optimization, connectedTo, Shipment>
+<Search Engine Optimization, connectedTo, Up_selling Offer>
+<Shipment, connectedTo, Invoice Generation>
+<Social Media Integration, connectedTo, Up_selling Offer>
+<Warehouse Management, connectedTo, Order Confirmation>
+<Warehouse Management, partOf, Price Adjustment>
+<Wishlist Management, connectedTo, Mobile App Interaction>
+<Wishlist Management, partOf, Affiliate Marketing>
+<start, connectedTo, Add to Cart>
+<start, yes, Up_selling Offer>
diff --git a/train/mermaid/hard/mermaid_371.txt b/train/mermaid/hard/mermaid_371.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c53fcf5284a67b8e27382225d8d69e2f14995839
--- /dev/null
+++ b/train/mermaid/hard/mermaid_371.txt
@@ -0,0 +1,31 @@
+<Behavior Management, feeds, Staff Training and Certification>
+<Behavior Management, partOf, Story Time Reading>
+<Child Development Assessment, connectedTo, Early Literacy Programs>
+<Child Development Assessment, connectedTo, Learning Material Selection>
+<Child Protection Policies, connectedTo, Child Development Assessment>
+<Childcare Facility Licensing, connectedTo, Daily Activity Reporting>
+<Daily Activity Reporting, connectedTo, Outdoor Exploration>
+<Diaper Changing, connectedTo, Safety Supervision>
+<Early Literacy Programs, connectedTo, Music and Movement Activities>
+<Early Literacy Programs, partOf, Toddler Activities>
+<Group Activities Coordination, connectedTo, Child Protection Policies>
+<Infant Care, connectedTo, Behavior Management>
+<Infant Care, partOf, Story Time Reading>
+<Learning Material Selection, connectedTo, Childcare Facility Licensing>
+<Learning Material Selection, connectedTo, Infant Care>
+<Music and Movement Activities, partOf, Toddler Activities>
+<Music and Movement Activities, transports, Special Needs Accommodation>
+<Nap Time Supervision, connectedTo, Parent Communication>
+<Parent Communication, connectedTo, Safety Supervision>
+<Parent Communication, connectedTo, Special Needs Accommodation>
+<Safety Supervision, communicates, Outdoor Exploration>
+<Safety Supervision, connectedTo, Child Development Assessment>
+<Safety Supervision, connectedTo, Child Protection Policies>
+<Safety Supervision, connectedTo, Group Activities Coordination>
+<Safety Supervision, connectedTo, Outdoor Exploration>
+<Special Needs Accommodation, connectedTo, Safety Supervision>
+<Special Needs Accommodation, connectedTo, Teacher_Child Ratio Management>
+<Staff Training and Certification, connectedTo, Diaper Changing>
+<Staff Training and Certification, partOf, Story Time Reading>
+<Teacher_Child Ratio Management, connectedTo, Diaper Changing>
+<Teacher_Child Ratio Management, connectedTo, Safety Supervision>
diff --git a/train/mermaid/hard/mermaid_373.txt b/train/mermaid/hard/mermaid_373.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8c3eed7cdf8c3637fe0e83a2211878b2052d7028
--- /dev/null
+++ b/train/mermaid/hard/mermaid_373.txt
@@ -0,0 +1,45 @@
+<After_School Programs, connectedTo, Teacher_Child Ratio Management>
+<Behavior Management, connectedTo, Music and Movement Activities>
+<Child Protection Policies, connectedTo, Early Literacy Programs>
+<Child Protection Policies, connectedTo, end>
+<Child Protection Policies, plays with, Social Skill Development>
+<Curriculum Planning, connectedTo, end>
+<Daily Activity Reporting, connectedTo, Infant Care>
+<Daily Activity Reporting, partOf, Field Trip Organization>
+<Diaper Changing, connectedTo, First Aid Administration>
+<Diaper Changing, partOf, Child Development Assessment>
+<Early Literacy Programs, administers, Story Time Reading>
+<Enrollment and Admissions, connectedTo, Parent Communication>
+<First Aid Administration, connectedTo, Music and Movement Activities>
+<First Aid Administration, partOf, Child Development Assessment>
+<Hygiene Practices, monitors, Daily Activity Reporting>
+<Hygiene Practices, partOf, Field Trip Organization>
+<Infant Care, connectedTo, Preschool Education>
+<Infant Care, partOf, Field Trip Organization>
+<Music and Movement Activities, connectedTo, Sensory Play>
+<Music and Movement Activities, connectedTo, Social Skill Development>
+<Nutritional Meal Preparation, connectedTo, Preschool Education>
+<Parent Communication, connectedTo, After_School Programs>
+<Parent Communication, enrolls, Curriculum Planning>
+<Playground Safety Inspection, connectedTo, Child Protection Policies>
+<Potty Training Assistance, connectedTo, Staff Training and Certification>
+<Potty Training Assistance, partOf, Child Development Assessment>
+<Preschool Education, advises, Parent Communication>
+<Preschool Education, connectedTo, Behavior Management>
+<Preschool Education, connectedTo, Curriculum Planning>
+<Preschool Education, connectedTo, Hygiene Practices>
+<Preschool Education, connectedTo, Story Time Reading>
+<Preschool Education, connectedTo, Teacher_Child Ratio Management>
+<Preschool Education, responds, Social Skill Development>
+<Sensory Play, connectedTo, Curriculum Planning>
+<Sensory Play, connectedTo, Playground Safety Inspection>
+<Sensory Play, teaches, Social Skill Development>
+<Social Skill Development, connectedTo, Enrollment and Admissions>
+<Staff Training and Certification, connectedTo, Diaper Changing>
+<Staff Training and Certification, partOf, Child Development Assessment>
+<Story Time Reading, connectedTo, Curriculum Planning>
+<Teacher_Child Ratio Management, connectedTo, Curriculum Planning>
+<Teacher_Child Ratio Management, connectedTo, Early Literacy Programs>
+<Teacher_Child Ratio Management, connectedTo, Potty Training Assistance>
+<Teacher_Child Ratio Management, connectedTo, Story Time Reading>
+<Teacher_Child Ratio Management, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_374.mmd b/train/mermaid/hard/mermaid_374.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e94f8fa419759f0b6a2dc3958be69e2c33e279c6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_374.mmd
@@ -0,0 +1,128 @@
+graph LR
+    N0([Diaper Changing])
+    N1[(Behavior Management)]
+    N2{Field Trip Organization}
+    N3([Teacher_Child Ratio Management])
+    N4[/Emergency Evacuation Drills/]
+    N5[(Nap Time Supervision)]
+    N6[Child Protection Policies]
+    N7(Staff Training and Certification)
+    N8(Story Time Reading)
+    N9[(Early Literacy Programs)]
+    N10{Hygiene Practices}
+    N11[Child Psychology Application]
+    N12[(Group Activities Coordination)]
+    N13[/Music and Movement Activities/]
+    N14[[Enrollment and Admissions]]
+    N15([Daily Activity Reporting])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Parent_Teacher Conferences
+        nest0_0[Safety Supervision]
+        nest0_1[Child Development Assessment]
+    end
+    subgraph Social Skill Development
+        nest1_0[Special Needs Accommodation]
+        nest1_1([Emotional Support])
+        nest1_2[/Toddler Activities/]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    N11 --> nest0_0
+    nest0_1 --> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N7 -.-> nest1_0
+    nest1_2 --> N6
+    N9 --> S0
+    S0 --> N14
+    S0 --> N15
+    N9 --> S1
+    S1 -.-> N13
+    S1 -.-> N11
+    S1 -.-> N12
+    N0 --> S2
+    S2 --> N8
+    S2 --> N13
+    S2 --> N5
+    N1 --> M0
+    N0 -.-> M0
+    M0 --> N3
+    style N0 fill:#ECCFF5,stroke:#CD8FF2
+    style N1 fill:#F5F5DC,stroke:#BCB88A
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#F5F5DC,stroke:#BCB88A
+    style N4 fill:#E0F2F1,stroke:#26A69A
+    style N5 fill:#F5F5DC,stroke:#BCB88A
+    style N6 fill:#F5F5DC,stroke:#BCB88A
+    style N7 fill:#F5F5DC,stroke:#BCB88A
+    style N8 fill:#ECCFF5,stroke:#CD8FF2
+    style N9 fill:#E0F2F1,stroke:#26A69A
+    style N10 fill:#F5F5DC,stroke:#BCB88A
+    style N11 fill:#E0F2F1,stroke:#26A69A
+    style N12 fill:#ECCFF5,stroke:#CD8FF2
+    style N13 fill:#E0F2F1,stroke:#26A69A
+    style N14 fill:#E0F2F1,stroke:#26A69A
+    style N15 fill:#ECCFF5,stroke:#CD8FF2
+    style S0 fill:#ECCFF5,stroke:#CD8FF2
+    style S1 fill:#E0F2F1,stroke:#26A69A
+    style S2 fill:#ECCFF5,stroke:#CD8FF2
+    style M0 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_0 fill:#E0F2F1,stroke:#26A69A
+    style nest0_1 fill:#E0F2F1,stroke:#26A69A
+    style nest1_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_1 fill:#ECCFF5,stroke:#CD8FF2
+    style nest1_2 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BCB88A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_374.txt b/train/mermaid/hard/mermaid_374.txt
new file mode 100644
index 0000000000000000000000000000000000000000..75d194c96c2a568d0a9501d21a53841c44d7e8bb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_374.txt
@@ -0,0 +1,37 @@
+<Behavior Management, connectedTo, Field Trip Organization>
+<Behavior Management, connectedTo, Teacher_Child Ratio Management>
+<Child Development Assessment, connectedTo, Child Psychology Application>
+<Child Development Assessment, partOf, Parent_Teacher Conferences>
+<Child Protection Policies, connectedTo, Staff Training and Certification>
+<Child Psychology Application, connectedTo, Group Activities Coordination>
+<Child Psychology Application, connectedTo, Safety Supervision>
+<Diaper Changing, connectedTo, Behavior Management>
+<Diaper Changing, connectedTo, Music and Movement Activities>
+<Diaper Changing, connectedTo, Nap Time Supervision>
+<Diaper Changing, connectedTo, Story Time Reading>
+<Diaper Changing, connectedTo, Teacher_Child Ratio Management>
+<Early Literacy Programs, connectedTo, Child Psychology Application>
+<Early Literacy Programs, connectedTo, Daily Activity Reporting>
+<Early Literacy Programs, connectedTo, Enrollment and Admissions>
+<Early Literacy Programs, connectedTo, Group Activities Coordination>
+<Early Literacy Programs, connectedTo, Hygiene Practices>
+<Early Literacy Programs, connectedTo, Music and Movement Activities>
+<Emergency Evacuation Drills, connectedTo, Nap Time Supervision>
+<Emotional Support, connectedTo, Toddler Activities>
+<Emotional Support, partOf, Social Skill Development>
+<Enrollment and Admissions, connectedTo, Daily Activity Reporting>
+<Field Trip Organization, connectedTo, Teacher_Child Ratio Management>
+<Group Activities Coordination, connectedTo, Music and Movement Activities>
+<Hygiene Practices, connectedTo, Child Psychology Application>
+<Music and Movement Activities, connectedTo, Enrollment and Admissions>
+<Nap Time Supervision, connectedTo, Child Protection Policies>
+<Safety Supervision, connectedTo, Child Development Assessment>
+<Safety Supervision, partOf, Parent_Teacher Conferences>
+<Special Needs Accommodation, connectedTo, Emotional Support>
+<Special Needs Accommodation, partOf, Social Skill Development>
+<Staff Training and Certification, connectedTo, Special Needs Accommodation>
+<Staff Training and Certification, connectedTo, Story Time Reading>
+<Story Time Reading, connectedTo, Early Literacy Programs>
+<Teacher_Child Ratio Management, connectedTo, Emergency Evacuation Drills>
+<Toddler Activities, connectedTo, Child Protection Policies>
+<Toddler Activities, partOf, Social Skill Development>
diff --git a/train/mermaid/hard/mermaid_376.mmd b/train/mermaid/hard/mermaid_376.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..af41f7ca0dddc8bd7423882218d8994cc9f6d0ff
--- /dev/null
+++ b/train/mermaid/hard/mermaid_376.mmd
@@ -0,0 +1,154 @@
+graph TD
+    N0([Nap Time Supervision])
+    N1[Child Protection Policies]
+    N2[/Sensory Play/]
+    N3(Child Development Assessment)
+    N4(Nutritional Meal Preparation)
+    N5[(Story Time Reading)]
+    N6[/Field Trip Organization/]
+    N7(Early Literacy Programs)
+    N8([Safety Supervision])
+    N9{Diaper Changing}
+    N10[[Childcare Facility Licensing]]
+    N11(Music and Movement Activities)
+    N12([Outdoor Play Supervision])
+    N13([Behavior Management])
+    N14[/Daily Activity Reporting/]
+    N15[Preschool Education]
+    N16(Social Skill Development)
+    N17[Creative Arts Activities]
+    N18([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Special Needs Accommodation
+        nest0_0{Learning Material Selection}
+        nest0_1(Parent_Teacher Conferences)
+    end
+    subgraph Teacher_Child Ratio Management
+        nest1_0(Toddler Activities)
+        nest1_1(Infant Care)
+        nest1_2[Individualized Attention]
+        nest1_3{Enrollment and Admissions}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    N17 -.-> N18
+    nest0_0 --> nest0_1
+    N13 --> nest0_0
+    nest0_1 -.-> N12
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N15 -.-> nest1_0
+    nest1_3 --> N12
+    N9 --> S0
+    S0 --> N15
+    S0 -.-> N13
+    S0 -.-> N14
+    N0 -.-> S1
+    S1 --> N6
+    S1 -.-> N9
+    N14 --> S2
+    S2 --> N17
+    S2 --> N18
+    S2 --> N16
+    N8 -.-> M0
+    N2 -.-> M0
+    N10 --> M0
+    M0 --> N16
+    N0 -.-> M1
+    N2 --> M1
+    M1 --> N5
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#CADEDE,stroke:#94C0C0
+    style N2 fill:#EDE7F6,stroke:#9575CD
+    style N3 fill:#CADEDE,stroke:#94C0C0
+    style N4 fill:#CADEDE,stroke:#94C0C0
+    style N5 fill:#E8F5E9,stroke:#66BB6A
+    style N6 fill:#EDE7F6,stroke:#9575CD
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style N8 fill:#E8F5E9,stroke:#66BB6A
+    style N9 fill:#E8F5E9,stroke:#66BB6A
+    style N10 fill:#EDE7F6,stroke:#9575CD
+    style N11 fill:#E8F5E9,stroke:#66BB6A
+    style N12 fill:#EDE7F6,stroke:#9575CD
+    style N13 fill:#CADEDE,stroke:#94C0C0
+    style N14 fill:#E8F5E9,stroke:#66BB6A
+    style N15 fill:#EDE7F6,stroke:#9575CD
+    style N16 fill:#E8F5E9,stroke:#66BB6A
+    style N17 fill:#E8F5E9,stroke:#66BB6A
+    style N18 fill:#EDE7F6,stroke:#9575CD
+    style S0 fill:#EDE7F6,stroke:#9575CD
+    style S1 fill:#EDE7F6,stroke:#9575CD
+    style S2 fill:#CADEDE,stroke:#94C0C0
+    style M0 fill:#E8F5E9,stroke:#66BB6A
+    style M1 fill:#E8F5E9,stroke:#66BB6A
+    style nest0_0 fill:#E8F5E9,stroke:#66BB6A
+    style nest0_1 fill:#E8F5E9,stroke:#66BB6A
+    style nest1_0 fill:#EDE7F6,stroke:#9575CD
+    style nest1_1 fill:#EDE7F6,stroke:#9575CD
+    style nest1_2 fill:#EDE7F6,stroke:#9575CD
+    style nest1_3 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#94C0C0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_377.txt b/train/mermaid/hard/mermaid_377.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3732c6a549a52bf8d09e84a1e3eb5b36f9f2f5e1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_377.txt
@@ -0,0 +1,39 @@
+<Caregiver Training, connectedTo, Personal Care Assistance>
+<Community Resource Connection, connectedTo, Palliative Care>
+<Companionship, connectedTo, Caregiver Training>
+<Companionship, connectedTo, Daily Living Assistance>
+<Companionship, connectedTo, Medication Management>
+<Companionship, connectedTo, Memory Care>
+<Companionship, connectedTo, Pain Management>
+<Daily Living Assistance, connectedTo, Telehealth for Seniors>
+<Daily Living Assistance, partOf, Incontinence Care>
+<Fall Prevention, connectedTo, Companionship>
+<Fall Prevention, connectedTo, Family Communication>
+<Fall Prevention, connectedTo, Health Monitoring>
+<Fall Prevention, connectedTo, Medication Management>
+<Fall Prevention, connectedTo, Memory Care>
+<Fall Prevention, connectedTo, Pain Management>
+<Family Communication, connectedTo, Pain Management>
+<Health Monitoring, connectedTo, Rehabilitation Support>
+<Health Monitoring, partOf, Elder Abuse Prevention>
+<Home Health Aide Services, connectedTo, Fall Prevention>
+<Hospice Care Coordination, connectedTo, Safety Assessments>
+<Hospice Care Coordination, partOf, Elder Abuse Prevention>
+<Legal Aid Referrals, connectedTo, Pain Management>
+<Legal Aid Referrals, partOf, Incontinence Care>
+<Medication Management, comforts, Physical Therapy>
+<Medication Management, connectedTo, Family Communication>
+<Memory Care, connectedTo, Medication Management>
+<Memory Care, connectedTo, Physical Therapy>
+<Memory Care, engages, Caregiver Training>
+<Memory Care, personalizes, Pain Management>
+<Pain Management, connectedTo, Caregiver Training>
+<Palliative Care, connectedTo, Home Health Aide Services>
+<Palliative Care, connectedTo, Physical Therapy>
+<Personal Care Assistance, connectedTo, Physical Therapy>
+<Rehabilitation Support, connectedTo, Hospice Care Coordination>
+<Rehabilitation Support, partOf, Elder Abuse Prevention>
+<Safety Assessments, connectedTo, Home Health Aide Services>
+<Safety Assessments, partOf, Elder Abuse Prevention>
+<Telehealth for Seniors, connectedTo, Legal Aid Referrals>
+<Telehealth for Seniors, partOf, Incontinence Care>
diff --git a/train/mermaid/hard/mermaid_379.txt b/train/mermaid/hard/mermaid_379.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e452f2618343f89b1d2031555ef4b7dc194c98d3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_379.txt
@@ -0,0 +1,34 @@
+<Care Plan Development, connectedTo, Speech Therapy>
+<Care Plan Development, partOf, Rehabilitation Support>
+<Caregiver Training, connectedTo, Community Resource Connection>
+<Caregiver Training, connectedTo, Meal Preparation>
+<Caregiver Training, connectedTo, Social Engagement Activities>
+<Cognitive Stimulation Activities, connectedTo, Dementia Care>
+<Cognitive Stimulation Activities, partOf, Rehabilitation Support>
+<Community Resource Connection, connectedTo, Health Monitoring>
+<Community Resource Connection, partOf, Telehealth for Seniors>
+<Dementia Care, connectedTo, Pain Management>
+<Dementia Care, partOf, Rehabilitation Support>
+<Family Communication, connectedTo, Cognitive Stimulation Activities>
+<Family Communication, connectedTo, Meal Preparation>
+<Health Monitoring, connectedTo, Safety Assessments>
+<Health Monitoring, partOf, Telehealth for Seniors>
+<Home Health Aide Services, connectedTo, Medication Management>
+<Home Health Aide Services, connectedTo, Personal Care Assistance>
+<Long_Term Care Planning, connectedTo, Meal Preparation>
+<Long_Term Care Planning, connectedTo, Occupational Therapy>
+<Medication Management, connectedTo, Caregiver Training>
+<Medication Management, connectedTo, Long_Term Care Planning>
+<Medication Management, connectedTo, Meal Preparation>
+<Medication Management, connectedTo, Speech Therapy>
+<Occupational Therapy, connectedTo, Caregiver Training>
+<Pain Management, connectedTo, Care Plan Development>
+<Pain Management, partOf, Rehabilitation Support>
+<Personal Care Assistance, connectedTo, Medication Management>
+<Personal Care Assistance, connectedTo, Transportation Assistance>
+<Safety Assessments, connectedTo, Social Engagement Activities>
+<Safety Assessments, partOf, Telehealth for Seniors>
+<Social Engagement Activities, connectedTo, Speech Therapy>
+<Speech Therapy, connectedTo, Family Communication>
+<Speech Therapy, connectedTo, Meal Preparation>
+<Transportation Assistance, connectedTo, Medication Management>
diff --git a/train/mermaid/hard/mermaid_381.mmd b/train/mermaid/hard/mermaid_381.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2953f52042e7eab399e4b38b7df5d974d9d88a88
--- /dev/null
+++ b/train/mermaid/hard/mermaid_381.mmd
@@ -0,0 +1,140 @@
+graph BT
+    N0([start])
+    N1(Pain Management)
+    N2[(Home Health Aide Services)]
+    N3{Mobility Support}
+    N4[(Fall Prevention)]
+    N5[[Elder Abuse Prevention]]
+    N6{Social Engagement Activities}
+    N7{Meal Preparation}
+    N8(Incontinence Care)
+    N9[Hospice Care Coordination]
+    N10(Caregiver Training)
+    N11[Recreational Activities Planning]
+    N12[/Nutritional Assessment/]
+    N13[[Chronic Disease Management]]
+    N14[(Speech Therapy)]
+    N15[/Memory Care/]
+    N16{Companionship}
+    N17(Transportation Assistance)
+    N18([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Dementia Care
+        nest0_0([Cognitive Stimulation Activities])
+        nest0_1(Personal Care Assistance)
+    end
+    subgraph Community Resource Connection
+        nest1_0([Family Communication])
+        nest1_1[Care Plan Development]
+        nest1_2[(Smart Home Integration for Seniors)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> |optimizes| N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> |manages| N14
+    N14 --> |reports| N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 --> N18
+    nest0_0 -.-> |assists| nest0_1
+    N17 -.-> nest0_0
+    nest0_1 --> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N17 -.-> nest1_0
+    nest1_2 --> N6
+    N8 --> S0
+    S0 -.-> N12
+    S0 -.-> N17
+    S0 --> N11
+    N3 --> S1
+    S1 -.-> N13
+    S1 --> N8
+    S1 --> N11
+    N13 --> S2
+    S2 -.-> N18
+    S2 -.-> N16
+    N8 --> M1
+    N1 --> M1
+    M1 -.-> N10
+    style N0 fill:#FFF9D4,stroke:#FFE69C
+    style N1 fill:#FFF9D4,stroke:#FFE69C
+    style N2 fill:#FFF0CC,stroke:#FFCC80
+    style N3 fill:#FFF0CC,stroke:#FFCC80
+    style N4 fill:#FFF9D4,stroke:#FFE69C
+    style N5 fill:#ECF0FD,stroke:#B8C0F5
+    style N6 fill:#FFF9D4,stroke:#FFE69C
+    style N7 fill:#FFF9D4,stroke:#FFE69C
+    style N8 fill:#FFF0CC,stroke:#FFCC80
+    style N9 fill:#FFF0CC,stroke:#FFCC80
+    style N10 fill:#FFF9D4,stroke:#FFE69C
+    style N11 fill:#FFF0CC,stroke:#FFCC80
+    style N12 fill:#FFF9D4,stroke:#FFE69C
+    style N13 fill:#FFF0CC,stroke:#FFCC80
+    style N14 fill:#ECF0FD,stroke:#B8C0F5
+    style N15 fill:#FFF0CC,stroke:#FFCC80
+    style N16 fill:#ECF0FD,stroke:#B8C0F5
+    style N17 fill:#FFF0CC,stroke:#FFCC80
+    style N18 fill:#FFF0CC,stroke:#FFCC80
+    style S0 fill:#ECF0FD,stroke:#B8C0F5
+    style S1 fill:#FFF0CC,stroke:#FFCC80
+    style S2 fill:#FFF9D4,stroke:#FFE69C
+    style M1 fill:#ECF0FD,stroke:#B8C0F5
+    style nest0_0 fill:#ECF0FD,stroke:#B8C0F5
+    style nest0_1 fill:#ECF0FD,stroke:#B8C0F5
+    style nest1_0 fill:#ECF0FD,stroke:#B8C0F5
+    style nest1_1 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_2 fill:#FFF0CC,stroke:#FFCC80
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFE69C,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_383.mmd b/train/mermaid/hard/mermaid_383.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3af6367fa5aa31c922b5db1ea4cf9d94fc54e8a8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_383.mmd
@@ -0,0 +1,150 @@
+graph TD
+    N0([Elder Abuse Prevention])
+    N1(Palliative Care)
+    N2(Transportation Assistance)
+    N3(Financial Management Assistance)
+    N4[Nursing Care]
+    N5(Care Plan Development)
+    N6[Social Engagement Activities]
+    N7[Incontinence Care]
+    N8[Chronic Disease Management]
+    N9[Physical Therapy]
+    N10(Nutritional Assessment)
+    N11(Mobility Support)
+    N12([Pain Management])
+    N13[Legal Aid Referrals]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Fall Prevention
+        nest0_0[Personal Care Assistance]
+        nest0_1[Safety Assessments]
+    end
+    subgraph Emergency Response System Monitoring
+        nest1_0([Smart Home Integration for Seniors])
+        nest1_1[[Occupational Therapy]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> |personalizes| N14
+    nest0_0 --> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 -.-> N8
+    nest1_0 --> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 -.-> N13
+    N9 -.-> S0
+    S0 --> N13
+    S0 -.-> N11
+    S0 --> N14
+    S0 -.-> N12
+    N3 -.-> S1
+    S1 --> N5
+    S1 -.-> N12
+    S1 -.-> N8
+    S1 --> N10
+    N5 --> S2
+    S2 --> N11
+    S2 --> N13
+    S2 -.-> N7
+    N4 -.-> M0
+    N3 -.-> M0
+    N5 --> M0
+    N0 --> M0
+    M0 -.-> N8
+    N6 -.-> M1
+    N0 -.-> M1
+    N2 --> M1
+    M1 -.-> N10
+    N1 --> M2
+    N0 --> M2
+    N7 --> M2
+    M2 --> N10
+    style N0 fill:#E0F2F1,stroke:#4DB6AC
+    style N1 fill:#E0F2F1,stroke:#4DB6AC
+    style N2 fill:#E0E6E9,stroke:#AABEC6
+    style N3 fill:#E0E6E9,stroke:#AABEC6
+    style N4 fill:#F5F5DC,stroke:#BCB88A
+    style N5 fill:#F5F5DC,stroke:#BCB88A
+    style N6 fill:#E0F2F1,stroke:#4DB6AC
+    style N7 fill:#E0F2F1,stroke:#4DB6AC
+    style N8 fill:#F5F5DC,stroke:#BCB88A
+    style N9 fill:#E0E6E9,stroke:#AABEC6
+    style N10 fill:#F5F5DC,stroke:#BCB88A
+    style N11 fill:#F5F5DC,stroke:#BCB88A
+    style N12 fill:#E0F2F1,stroke:#4DB6AC
+    style N13 fill:#F5F5DC,stroke:#BCB88A
+    style N14 fill:#F5F5DC,stroke:#BCB88A
+    style S0 fill:#E0E6E9,stroke:#AABEC6
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style S2 fill:#F5F5DC,stroke:#BCB88A
+    style M0 fill:#E0E6E9,stroke:#AABEC6
+    style M1 fill:#E0E6E9,stroke:#AABEC6
+    style M2 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_1 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#4DB6AC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_383.txt b/train/mermaid/hard/mermaid_383.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fef4bb73b66395e438c6833987c7f39b38a35c63
--- /dev/null
+++ b/train/mermaid/hard/mermaid_383.txt
@@ -0,0 +1,43 @@
+<Care Plan Development, connectedTo, Chronic Disease Management>
+<Care Plan Development, connectedTo, Incontinence Care>
+<Care Plan Development, connectedTo, Legal Aid Referrals>
+<Care Plan Development, connectedTo, Mobility Support>
+<Care Plan Development, connectedTo, Social Engagement Activities>
+<Chronic Disease Management, connectedTo, Physical Therapy>
+<Elder Abuse Prevention, connectedTo, Chronic Disease Management>
+<Elder Abuse Prevention, connectedTo, Nutritional Assessment>
+<Elder Abuse Prevention, connectedTo, Palliative Care>
+<Financial Management Assistance, connectedTo, Care Plan Development>
+<Financial Management Assistance, connectedTo, Chronic Disease Management>
+<Financial Management Assistance, connectedTo, Nursing Care>
+<Financial Management Assistance, connectedTo, Nutritional Assessment>
+<Financial Management Assistance, connectedTo, Pain Management>
+<Incontinence Care, connectedTo, Chronic Disease Management>
+<Incontinence Care, connectedTo, Nutritional Assessment>
+<Incontinence Care, connectedTo, Personal Care Assistance>
+<Legal Aid Referrals, personalizes, end>
+<Mobility Support, connectedTo, Pain Management>
+<Nursing Care, connectedTo, Care Plan Development>
+<Nursing Care, connectedTo, Chronic Disease Management>
+<Nutritional Assessment, connectedTo, Mobility Support>
+<Occupational Therapy, connectedTo, Legal Aid Referrals>
+<Occupational Therapy, partOf, Emergency Response System Monitoring>
+<Pain Management, connectedTo, Legal Aid Referrals>
+<Palliative Care, connectedTo, Nutritional Assessment>
+<Palliative Care, connectedTo, Transportation Assistance>
+<Personal Care Assistance, connectedTo, Safety Assessments>
+<Personal Care Assistance, partOf, Fall Prevention>
+<Physical Therapy, connectedTo, Legal Aid Referrals>
+<Physical Therapy, connectedTo, Mobility Support>
+<Physical Therapy, connectedTo, Nutritional Assessment>
+<Physical Therapy, connectedTo, Pain Management>
+<Physical Therapy, connectedTo, end>
+<Safety Assessments, connectedTo, Chronic Disease Management>
+<Safety Assessments, partOf, Fall Prevention>
+<Smart Home Integration for Seniors, connectedTo, Occupational Therapy>
+<Smart Home Integration for Seniors, partOf, Emergency Response System Monitoring>
+<Social Engagement Activities, connectedTo, Incontinence Care>
+<Social Engagement Activities, connectedTo, Nutritional Assessment>
+<Transportation Assistance, connectedTo, Financial Management Assistance>
+<Transportation Assistance, connectedTo, Nutritional Assessment>
+<Transportation Assistance, connectedTo, Smart Home Integration for Seniors>
diff --git a/train/mermaid/hard/mermaid_384.txt b/train/mermaid/hard/mermaid_384.txt
new file mode 100644
index 0000000000000000000000000000000000000000..58aad89798827fc398a04680d4d46bdfef14394b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_384.txt
@@ -0,0 +1,39 @@
+<Care Plan Development, connectedTo, Personal Care Assistance>
+<Companionship, connectedTo, Care Plan Development>
+<Companionship, partOf, Community Resource Connection>
+<Dementia Care, connectedTo, Nursing Care>
+<Dementia Care, partOf, Health Monitoring>
+<Elder Abuse Prevention, connectedTo, Dementia Care>
+<Elder Abuse Prevention, connectedTo, Respite Care>
+<Emergency Response System Monitoring, connectedTo, Long_Term Care Planning>
+<Emergency Response System Monitoring, connectedTo, Safety Assessments>
+<Emotional Support and Counseling, accompanies, Care Plan Development>
+<Emotional Support and Counseling, partOf, Health Monitoring>
+<Fall Prevention, connectedTo, Meal Preparation>
+<Home Health Aide Services, connectedTo, Elder Abuse Prevention>
+<Home Health Aide Services, connectedTo, Emergency Response System Monitoring>
+<Home Health Aide Services, connectedTo, Pain Management>
+<Incontinence Care, connectedTo, Fall Prevention>
+<Incontinence Care, connectedTo, Meal Preparation>
+<Incontinence Care, connectedTo, Mobility Support>
+<Incontinence Care, responds, Memory Care>
+<Legal Aid Referrals, connectedTo, Meal Preparation>
+<Legal Aid Referrals, connectedTo, Transportation Assistance>
+<Long_Term Care Planning, connectedTo, Companionship>
+<Long_Term Care Planning, partOf, Community Resource Connection>
+<Meal Preparation, connectedTo, Memory Care>
+<Mobility Support, connectedTo, Fall Prevention>
+<Nursing Care, connectedTo, Emotional Support and Counseling>
+<Nursing Care, partOf, Health Monitoring>
+<Nutritional Assessment, connectedTo, Home Health Aide Services>
+<Pain Management, advises, Emergency Response System Monitoring>
+<Pain Management, connectedTo, Meal Preparation>
+<Personal Care Assistance, comforts, Memory Care>
+<Personal Care Assistance, connectedTo, Elder Abuse Prevention>
+<Personal Care Assistance, connectedTo, Nutritional Assessment>
+<Personal Care Assistance, connectedTo, Respite Care>
+<Personal Care Assistance, documents, Emergency Response System Monitoring>
+<Respite Care, connectedTo, Incontinence Care>
+<Safety Assessments, connectedTo, Social Engagement Activities>
+<Social Engagement Activities, connectedTo, Elder Abuse Prevention>
+<Transportation Assistance, connectedTo, Care Plan Development>
diff --git a/train/mermaid/hard/mermaid_385.mmd b/train/mermaid/hard/mermaid_385.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2bbdc91e55f019d3008a45e0d6429540ab622eb5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_385.mmd
@@ -0,0 +1,138 @@
+graph TD
+    N0([Satellite Imagery Analysis])
+    N1[[Geographic Information Systems for Disasters]]
+    N2([Resource Mobilization])
+    N3([Emergency Planning])
+    N4[[Medical Aid Deployment]]
+    N5[Logistics and Supply Chain]
+    N6(Community Preparedness)
+    N7(Environmental Remediation)
+    N8(Emergency Drills and Exercises)
+    N9[Cash Transfer Programs]
+    N10(International Aid Coordination)
+    N11[Vulnerability Analysis]
+    N12[/Recovery Planning/]
+    N13[[Infrastructure Repair]]
+    N14[[Resilience Building]]
+    N15[(Information Dissemination)]
+    N16[Emergency Response]
+    N17([Public Awareness Campaigns])
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Capacity Building for Local Communities
+        nest0_0(Reconstruction)
+        nest0_1[[Communication Protocols]]
+        nest0_2([Early Warning Systems])
+        nest0_3{Early Recovery Actions}
+    end
+    subgraph Debris Management
+        nest1_0(Policy and Legislation Review)
+        nest1_1[[Hazard Identification]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> |plans| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> |recovers| N17
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N15 --> nest0_0
+    nest0_3 -.-> N11
+    nest1_0 --> |funds| nest1_1
+    N14 --> nest1_0
+    nest1_1 --> N16
+    N8 -.-> S1
+    S1 -.-> N16
+    S1 --> |shelters| N17
+    N10 -.-> S2
+    S2 -.-> N15
+    S2 --> N13
+    S2 -.-> |donates| N12
+    N7 -.-> M0
+    N1 --> M0
+    M0 -.-> N10
+    N4 -.-> M1
+    N3 -.-> M1
+    M1 -.-> N8
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#E8F0FF,stroke:#A2D0FF
+    style N2 fill:#F3E5F5,stroke:#BA68C8
+    style N3 fill:#F3E5F5,stroke:#BA68C8
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#FFF8E1,stroke:#FFD54F
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#E8F0FF,stroke:#A2D0FF
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#E8F0FF,stroke:#A2D0FF
+    style N10 fill:#F3E5F5,stroke:#BA68C8
+    style N11 fill:#E8F0FF,stroke:#A2D0FF
+    style N12 fill:#E8F0FF,stroke:#A2D0FF
+    style N13 fill:#FFF8E1,stroke:#FFD54F
+    style N14 fill:#E8F0FF,stroke:#A2D0FF
+    style N15 fill:#F3E5F5,stroke:#BA68C8
+    style N16 fill:#F3E5F5,stroke:#BA68C8
+    style N17 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#F3E5F5,stroke:#BA68C8
+    style S2 fill:#E8F0FF,stroke:#A2D0FF
+    style M0 fill:#F3E5F5,stroke:#BA68C8
+    style M1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_1 fill:#FFF8E1,stroke:#FFD54F
+    style nest0_2 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_3 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_1 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_385.txt b/train/mermaid/hard/mermaid_385.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ff8ec1ae619870674754f3880eb6a0d56556d223
--- /dev/null
+++ b/train/mermaid/hard/mermaid_385.txt
@@ -0,0 +1,40 @@
+<Cash Transfer Programs, connectedTo, International Aid Coordination>
+<Communication Protocols, connectedTo, Early Warning Systems>
+<Communication Protocols, partOf, Capacity Building for Local Communities>
+<Community Preparedness, connectedTo, Environmental Remediation>
+<Early Recovery Actions, connectedTo, Vulnerability Analysis>
+<Early Recovery Actions, partOf, Capacity Building for Local Communities>
+<Early Warning Systems, connectedTo, Early Recovery Actions>
+<Early Warning Systems, partOf, Capacity Building for Local Communities>
+<Emergency Drills and Exercises, connectedTo, Cash Transfer Programs>
+<Emergency Drills and Exercises, connectedTo, Emergency Response>
+<Emergency Drills and Exercises, shelters, Public Awareness Campaigns>
+<Emergency Planning, connectedTo, Emergency Drills and Exercises>
+<Emergency Planning, connectedTo, Medical Aid Deployment>
+<Emergency Response, recovers, Public Awareness Campaigns>
+<Environmental Remediation, connectedTo, Emergency Drills and Exercises>
+<Environmental Remediation, connectedTo, International Aid Coordination>
+<Geographic Information Systems for Disasters, connectedTo, International Aid Coordination>
+<Geographic Information Systems for Disasters, connectedTo, Resource Mobilization>
+<Hazard Identification, connectedTo, Emergency Response>
+<Hazard Identification, partOf, Debris Management>
+<Information Dissemination, connectedTo, Emergency Response>
+<Information Dissemination, connectedTo, Reconstruction>
+<Infrastructure Repair, connectedTo, Resilience Building>
+<International Aid Coordination, connectedTo, Information Dissemination>
+<International Aid Coordination, connectedTo, Infrastructure Repair>
+<International Aid Coordination, connectedTo, Vulnerability Analysis>
+<International Aid Coordination, donates, Recovery Planning>
+<Logistics and Supply Chain, connectedTo, Community Preparedness>
+<Medical Aid Deployment, connectedTo, Emergency Drills and Exercises>
+<Medical Aid Deployment, connectedTo, Logistics and Supply Chain>
+<Policy and Legislation Review, funds, Hazard Identification>
+<Policy and Legislation Review, partOf, Debris Management>
+<Reconstruction, connectedTo, Communication Protocols>
+<Reconstruction, partOf, Capacity Building for Local Communities>
+<Recovery Planning, connectedTo, Infrastructure Repair>
+<Resilience Building, connectedTo, Information Dissemination>
+<Resilience Building, connectedTo, Policy and Legislation Review>
+<Resource Mobilization, plans, Emergency Planning>
+<Satellite Imagery Analysis, connectedTo, Geographic Information Systems for Disasters>
+<Vulnerability Analysis, connectedTo, Recovery Planning>
diff --git a/train/mermaid/hard/mermaid_388.mmd b/train/mermaid/hard/mermaid_388.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..421f33436a06831ac9ba72fcce1887190d8bddc9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_388.mmd
@@ -0,0 +1,128 @@
+graph RL
+    N0([Hazard Identification])
+    N1[(Communication Protocols)]
+    N2[[Hazard Mapping]]
+    N3[/Volunteer Coordination/]
+    N4[[International Aid Coordination]]
+    N5[Emergency Planning]
+    N6[/Community Preparedness/]
+    N7(Reconstruction)
+    N8(Logistics and Supply Chain)
+    N9[Mitigation Strategies]
+    N10(Psychosocial Support)
+    N11[/Public Awareness Campaigns/]
+    N12[(Capacity Building for Local Communities)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Risk Assessment
+        nest0_0([Recovery Planning])
+        nest0_1[[Early Warning Systems]]
+    end
+    subgraph Satellite Imagery Analysis
+        nest1_0(Evacuation Procedures)
+        nest1_1[Resilience Building]
+        nest1_2{Search and Rescue Operations}
+        nest1_3([Policy and Legislation Review])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    N4 -.-> nest0_0
+    nest0_1 -.-> N9
+    nest1_0 --> |rescues| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N6 --> nest1_0
+    nest1_3 -.-> N11
+    N6 -.-> S0
+    S0 -.-> N12
+    S0 --> N8
+    N0 -.-> S1
+    S1 -.-> N12
+    S1 --> N11
+    S1 -.-> N2
+    N9 -.-> S2
+    S2 --> N12
+    S2 -.-> N11
+    N8 --> M0
+    N2 --> M0
+    N7 --> M0
+    M0 -.-> N12
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N3
+    style N0 fill:#F8FDD3,stroke:#D3EB9F
+    style N1 fill:#F1F8E9,stroke:#81C784
+    style N2 fill:#F1F8E9,stroke:#81C784
+    style N3 fill:#F1F8E9,stroke:#81C784
+    style N4 fill:#ECF0FD,stroke:#B8C0F5
+    style N5 fill:#ECF0FD,stroke:#B8C0F5
+    style N6 fill:#F8FDD3,stroke:#D3EB9F
+    style N7 fill:#F8FDD3,stroke:#D3EB9F
+    style N8 fill:#F1F8E9,stroke:#81C784
+    style N9 fill:#F1F8E9,stroke:#81C784
+    style N10 fill:#ECF0FD,stroke:#B8C0F5
+    style N11 fill:#ECF0FD,stroke:#B8C0F5
+    style N12 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#ECF0FD,stroke:#B8C0F5
+    style S1 fill:#F1F8E9,stroke:#81C784
+    style S2 fill:#F1F8E9,stroke:#81C784
+    style M0 fill:#F1F8E9,stroke:#81C784
+    style M1 fill:#F8FDD3,stroke:#D3EB9F
+    style nest0_0 fill:#ECF0FD,stroke:#B8C0F5
+    style nest0_1 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_0 fill:#F1F8E9,stroke:#81C784
+    style nest1_1 fill:#ECF0FD,stroke:#B8C0F5
+    style nest1_2 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_3 fill:#ECF0FD,stroke:#B8C0F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_389.mmd b/train/mermaid/hard/mermaid_389.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..84d34f946786c1fac676201a32c438c1e0218176
--- /dev/null
+++ b/train/mermaid/hard/mermaid_389.mmd
@@ -0,0 +1,162 @@
+graph LR
+    N0([Emergency Response])
+    N1(Debris Management)
+    N2[Risk Assessment]
+    N3([Hazard Mapping])
+    N4([Cash Transfer Programs])
+    N5[[Hazard Identification]]
+    N6(Logistics and Supply Chain)
+    N7(Drone Deployment for Assessment)
+    N8{Incident Command System}
+    N9[/Communication Protocols/]
+    N10[[Satellite Imagery Analysis]]
+    N11{Community Preparedness}
+    N12(Climate Change Adaptation for Disasters)
+    N13[(Evacuation Procedures)]
+    N14{Early Warning Systems}
+    N15[Environmental Remediation]
+    N16([Infrastructure Repair])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Resilience Building
+        nest0_0(Policy and Legislation Review)
+        nest0_1[Medical Aid Deployment]
+        nest0_2[/Damage Assessment/]
+    end
+    subgraph Early Recovery Actions
+        nest1_0(Vulnerability Analysis)
+        nest1_1[Emergency Planning]
+        nest1_2([Recovery Planning])
+        nest1_3[[Post_Disaster Evaluation]]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> |donates| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N7 --> nest0_0
+    nest0_2 --> N15
+    nest1_0 --> |prevents| nest1_1
+    nest1_1 -.-> |responds| nest1_2
+    nest1_2 --> nest1_3
+    N10 --> nest1_0
+    nest1_3 --> N9
+    N4 --> S0
+    S0 -.-> N7
+    S0 --> N11
+    S0 -.-> N6
+    N4 --> S1
+    S1 --> N7
+    S1 -.-> N13
+    N5 -.-> S2
+    S2 -.-> N10
+    S2 --> N15
+    S2 -.-> N8
+    N4 -.-> M0
+    N3 --> M0
+    N2 -.-> M0
+    M0 --> N11
+    N5 -.-> M1
+    N2 -.-> M1
+    N6 -.-> M1
+    M1 -.-> N9
+    N2 --> M2
+    N1 --> M2
+    N3 -.-> M2
+    M2 -.-> N5
+    style N0 fill:#EFEBE9,stroke:#A1887F
+    style N1 fill:#DACBE3,stroke:#A188D0
+    style N2 fill:#DACBE3,stroke:#A188D0
+    style N3 fill:#EFEBE9,stroke:#A1887F
+    style N4 fill:#DACBE3,stroke:#A188D0
+    style N5 fill:#F1F8E9,stroke:#81C784
+    style N6 fill:#EFEBE9,stroke:#A1887F
+    style N7 fill:#EFEBE9,stroke:#A1887F
+    style N8 fill:#EFEBE9,stroke:#A1887F
+    style N9 fill:#DACBE3,stroke:#A188D0
+    style N10 fill:#DACBE3,stroke:#A188D0
+    style N11 fill:#EFEBE9,stroke:#A1887F
+    style N12 fill:#F1F8E9,stroke:#81C784
+    style N13 fill:#F1F8E9,stroke:#81C784
+    style N14 fill:#DACBE3,stroke:#A188D0
+    style N15 fill:#EFEBE9,stroke:#A1887F
+    style N16 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style S2 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#DACBE3,stroke:#A188D0
+    style M1 fill:#DACBE3,stroke:#A188D0
+    style M2 fill:#F1F8E9,stroke:#81C784
+    style nest0_0 fill:#DACBE3,stroke:#A188D0
+    style nest0_1 fill:#EFEBE9,stroke:#A1887F
+    style nest0_2 fill:#F1F8E9,stroke:#81C784
+    style nest1_0 fill:#DACBE3,stroke:#A188D0
+    style nest1_1 fill:#EFEBE9,stroke:#A1887F
+    style nest1_2 fill:#F1F8E9,stroke:#81C784
+    style nest1_3 fill:#EFEBE9,stroke:#A1887F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 47 stroke:#A1887F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_391.txt b/train/mermaid/hard/mermaid_391.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b097083e7a617f91a7c24649a4273baafc3f48cf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_391.txt
@@ -0,0 +1,33 @@
+<Climate Change Adaptation for Disasters, connectedTo, Damage Assessment>
+<Damage Assessment, connectedTo, Debris Management>
+<Debris Management, connectedTo, Drone Deployment for Assessment>
+<Debris Management, connectedTo, Infrastructure Repair>
+<Drone Deployment for Assessment, connectedTo, Infrastructure Repair>
+<Early Recovery Actions, connectedTo, Infrastructure Repair>
+<Early Recovery Actions, connectedTo, Risk Assessment>
+<Early Warning Systems, connectedTo, Search and Rescue Operations>
+<Early Warning Systems, partOf, International Aid Coordination>
+<Economic Recovery Initiatives, connectedTo, Post_Disaster Evaluation>
+<Emergency Drills and Exercises, connectedTo, Recovery Planning>
+<Emergency Drills and Exercises, partOf, Hazard Mapping>
+<Emergency Response, connectedTo, Psychosocial Support>
+<Emergency Response, partOf, Hazard Mapping>
+<Environmental Remediation, connectedTo, Early Recovery Actions>
+<Environmental Remediation, connectedTo, Risk Assessment>
+<Policy and Legislation Review, connectedTo, Early Warning Systems>
+<Policy and Legislation Review, partOf, International Aid Coordination>
+<Post_Disaster Evaluation, connectedTo, Climate Change Adaptation for Disasters>
+<Post_Disaster Evaluation, connectedTo, Damage Assessment>
+<Post_Disaster Evaluation, connectedTo, Debris Management>
+<Post_Disaster Evaluation, connectedTo, Emergency Response>
+<Post_Disaster Evaluation, connectedTo, Policy and Legislation Review>
+<Psychosocial Support, connectedTo, Emergency Drills and Exercises>
+<Psychosocial Support, partOf, Hazard Mapping>
+<Recovery Planning, connectedTo, Economic Recovery Initiatives>
+<Recovery Planning, partOf, Hazard Mapping>
+<Risk Assessment, connectedTo, Economic Recovery Initiatives>
+<Search and Rescue Operations, connectedTo, Infrastructure Repair>
+<Search and Rescue Operations, partOf, International Aid Coordination>
+<start, connectedTo, Environmental Remediation>
+<start, connectedTo, Post_Disaster Evaluation>
+<start, connectedTo, Risk Assessment>
diff --git a/train/mermaid/hard/mermaid_394.txt b/train/mermaid/hard/mermaid_394.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0ff24eae2d4c0bf40a45f7aebc7795daa829c044
--- /dev/null
+++ b/train/mermaid/hard/mermaid_394.txt
@@ -0,0 +1,42 @@
+<Air Operations, connectedTo, Counter_Terrorism Operations>
+<Basic Training, partOf, Disaster Relief Deployment>
+<Basic Training, patrols, Surveillance>
+<Chaplain Services, connectedTo, Air Operations>
+<Combat Operations, connectedTo, Basic Training>
+<Combat Operations, partOf, Disaster Relief Deployment>
+<Counter_Terrorism Operations, connectedTo, Family Support Programs>
+<Counter_Terrorism Operations, connectedTo, Military Strategy Development>
+<Counter_Terrorism Operations, connectedTo, Specialized Training>
+<Counter_Terrorism Operations, connectedTo, Unmanned Systems Operation>
+<Crisis Management, connectedTo, Combat Operations>
+<Crisis Management, partOf, Disaster Relief Deployment>
+<Defense Procurement, connectedTo, Readiness Assessment>
+<Demobilization, connectedTo, Crisis Management>
+<Demobilization, partOf, Disaster Relief Deployment>
+<Family Support Programs, connectedTo, Specialized Training>
+<Ground Operations, connectedTo, Recruitment>
+<Ground Operations, partOf, Rules of Engagement>
+<Medical Support, connectedTo, Chaplain Services>
+<Medical Support, connectedTo, Counter_Terrorism Operations>
+<Medical Support, connectedTo, Veteran Support>
+<Operations Planning, connectedTo, Ground Operations>
+<Operations Planning, partOf, Rules of Engagement>
+<Readiness Assessment, connectedTo, Troop Deployment>
+<Recruitment, connectedTo, Chaplain Services>
+<Recruitment, partOf, Rules of Engagement>
+<Specialized Training, connectedTo, Weapon Systems Development>
+<Surveillance, connectedTo, Medical Support>
+<Surveillance, connectedTo, Veteran Support>
+<Targeting, connectedTo, Chaplain Services>
+<Targeting, connectedTo, Counter_Terrorism Operations>
+<Targeting, connectedTo, Surveillance>
+<Targeting, connectedTo, Veteran Support>
+<Troop Deployment, connectedTo, Family Support Programs>
+<Troop Deployment, trains, Demobilization>
+<Unmanned Systems Operation, connectedTo, Defense Procurement>
+<Veteran Support, connectedTo, Chaplain Services>
+<Veteran Support, connectedTo, Counter_Terrorism Operations>
+<Veteran Support, connectedTo, Operations Planning>
+<Veteran Support, connectedTo, Troop Deployment>
+<Veteran Support, coordinates, Counter_Terrorism Operations>
+<Weapon Systems Development, connectedTo, Military Strategy Development>
diff --git a/train/mermaid/hard/mermaid_396.mmd b/train/mermaid/hard/mermaid_396.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d12a87e2c9ca8c1e7744eb029dcb0b871ef79219
--- /dev/null
+++ b/train/mermaid/hard/mermaid_396.mmd
@@ -0,0 +1,150 @@
+graph BT
+    N0([start])
+    N1([Defense Procurement])
+    N2[Family Support Programs]
+    N3[(Recruitment)]
+    N4[(Air Operations)]
+    N5[[Cyber Warfare Operations]]
+    N6(Equipment Maintenance)
+    N7[(Rules of Engagement)]
+    N8(Civil_Military Cooperation)
+    N9[[Basic Training]]
+    N10[(Space Operations)]
+    N11{Electronic Warfare}
+    N12[[Chaplain Services]]
+    N13([Weapon Systems Development])
+    N14([Specialized Training])
+    N15[Crisis Management]
+    N16(Medical Support)
+    N17(Readiness Assessment)
+    N18([Military Strategy Development])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Joint Exercises
+        nest0_0[[Force Projection]]
+        nest0_1(Surveillance)
+    end
+    subgraph Unmanned Systems Operation
+        nest1_0[Logistics Support]
+        nest1_1[/Supply Chain Management/]
+        nest1_2{Demobilization}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> |coordinates| N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> |evaluates| N16
+    N16 -.-> N17
+    N17 -.-> N18
+    nest0_0 -.-> |reports| nest0_1
+    N8 -.-> nest0_0
+    nest0_1 -.-> N17
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N2 --> nest1_0
+    nest1_2 --> N9
+    N9 --> S0
+    S0 -.-> N14
+    S0 --> N15
+    S0 --> N18
+    N1 -.-> S1
+    S1 -.-> N18
+    S1 --> N13
+    S1 --> N11
+    N3 -.-> S2
+    S2 --> N15
+    S2 --> N18
+    N0 --> M0
+    N1 -.-> M0
+    M0 --> N4
+    N1 -.-> M1
+    N4 --> M1
+    N2 --> M1
+    M1 --> N7
+    style N0 fill:#FFF3E0,stroke:#FFA726
+    style N1 fill:#FFF3E0,stroke:#FFA726
+    style N2 fill:#FFDAB9,stroke:#FFC085
+    style N3 fill:#FFF3E0,stroke:#FFA726
+    style N4 fill:#FFDAB9,stroke:#FFC085
+    style N5 fill:#FFF3E0,stroke:#FFA726
+    style N6 fill:#FFDAB9,stroke:#FFC085
+    style N7 fill:#FFF3E0,stroke:#FFA726
+    style N8 fill:#DACBE3,stroke:#A188D0
+    style N9 fill:#FFF3E0,stroke:#FFA726
+    style N10 fill:#FFF3E0,stroke:#FFA726
+    style N11 fill:#DACBE3,stroke:#A188D0
+    style N12 fill:#FFDAB9,stroke:#FFC085
+    style N13 fill:#DACBE3,stroke:#A188D0
+    style N14 fill:#FFDAB9,stroke:#FFC085
+    style N15 fill:#FFF3E0,stroke:#FFA726
+    style N16 fill:#FFF3E0,stroke:#FFA726
+    style N17 fill:#FFDAB9,stroke:#FFC085
+    style N18 fill:#FFDAB9,stroke:#FFC085
+    style S0 fill:#FFF3E0,stroke:#FFA726
+    style S1 fill:#FFDAB9,stroke:#FFC085
+    style S2 fill:#FFDAB9,stroke:#FFC085
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#FFDAB9,stroke:#FFC085
+    style nest0_0 fill:#FFDAB9,stroke:#FFC085
+    style nest0_1 fill:#FFDAB9,stroke:#FFC085
+    style nest1_0 fill:#FFDAB9,stroke:#FFC085
+    style nest1_1 fill:#DACBE3,stroke:#A188D0
+    style nest1_2 fill:#DACBE3,stroke:#A188D0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#A188D0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_397.txt b/train/mermaid/hard/mermaid_397.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e4d157547860b056612cd63accfb6655a427d094
--- /dev/null
+++ b/train/mermaid/hard/mermaid_397.txt
@@ -0,0 +1,40 @@
+<Combat Operations, connectedTo, Family Support Programs>
+<Combat Operations, partOf, Basic Training>
+<Counter_Insurgency Operations, connectedTo, Crisis Management>
+<Counter_Insurgency Operations, connectedTo, Electronic Warfare>
+<Counter_Terrorism Operations, connectedTo, Intelligence Gathering>
+<Counter_Terrorism Operations, partOf, Rules of Engagement>
+<Crisis Management, connectedTo, Force Projection>
+<Crisis Management, connectedTo, Military Law>
+<Crisis Management, operates, Defense Procurement>
+<Defense Procurement, connectedTo, Counter_Terrorism Operations>
+<Defense Procurement, partOf, Rules of Engagement>
+<Demobilization, connectedTo, Logistics Support>
+<Disaster Relief Deployment, connectedTo, Targeting>
+<Electronic Warfare, surveys, Space Operations>
+<Equipment Maintenance, connectedTo, Demobilization>
+<Equipment Maintenance, connectedTo, Electronic Warfare>
+<Equipment Maintenance, connectedTo, Logistics Support>
+<Family Support Programs, connectedTo, end>
+<Family Support Programs, partOf, Basic Training>
+<Force Projection, connectedTo, Naval Operations>
+<Force Projection, partOf, Basic Training>
+<Intelligence Gathering, connectedTo, Crisis Management>
+<Intelligence Gathering, partOf, Rules of Engagement>
+<Logistics Support, connectedTo, Supply Chain Management>
+<Military Law, connectedTo, Disaster Relief Deployment>
+<Military Law, connectedTo, Recruitment>
+<Military Law, connectedTo, Specialized Training>
+<Naval Operations, connectedTo, Combat Operations>
+<Naval Operations, partOf, Basic Training>
+<Recruitment, enforces, Specialized Training>
+<Space Operations, connectedTo, end>
+<Specialized Training, connectedTo, Electronic Warfare>
+<Specialized Training, plans, Disaster Relief Deployment>
+<Supply Chain Management, connectedTo, Weapon Systems Development>
+<Targeting, evaluates, Electronic Warfare>
+<Weapon Systems Development, connectedTo, Counter_Insurgency Operations>
+<start, connectedTo, Logistics Support>
+<start, connectedTo, Recruitment>
+<start, connectedTo, Targeting>
+<start, researches, Equipment Maintenance>
diff --git a/train/mermaid/hard/mermaid_402.mmd b/train/mermaid/hard/mermaid_402.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..62f2e512ad55db0a67a23d1753930a30feaa0ac6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_402.mmd
@@ -0,0 +1,118 @@
+graph TD
+    N0([Cargo Loading])
+    N1[/Route Optimization/]
+    N2{Flight Planning}
+    N3[(Aviation Safety Investigation)]
+    N4(Aircraft Manufacturing)
+    N5(Airport Operations)
+    N6[Weather Briefing]
+    N7[Airspace Management]
+    N8(Delay Management)
+    N9{Engine Overhaul}
+    N10([Runway Management])
+    N11(Sustainable Aviation Fuel Development)
+    N12[(In_flight Service)]
+    N13[/Fueling Operations/]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Navigation System Check
+        nest0_0[Remote Tower Operations]
+        nest0_1[(Unmanned Aerial Vehicle Integration)]
+    end
+    subgraph Air Cargo Logistics
+        nest1_0([Crew Resource Management])
+        nest1_1[(Emergency Procedures Training)]
+        nest1_2[/Aircraft Maintenance/]
+        nest1_3[[Avionics Repair]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> |optimizes| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    N5 --> nest0_0
+    nest0_1 -.-> N1
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N5 --> nest1_0
+    nest1_3 --> N12
+    N9 -.-> S0
+    S0 -.-> N14
+    S0 --> N13
+    N8 -.-> S1
+    S1 -.-> |integrates| N10
+    S1 --> N11
+    S1 -.-> N12
+    N0 -.-> M1
+    N1 --> M1
+    M1 --> N3
+    style N0 fill:#FFFDE7,stroke:#FBC02D
+    style N1 fill:#E9F7E8,stroke:#6EB76D
+    style N2 fill:#E9F7E8,stroke:#6EB76D
+    style N3 fill:#FFFDE7,stroke:#FBC02D
+    style N4 fill:#E9F7E8,stroke:#6EB76D
+    style N5 fill:#FFFDE7,stroke:#FBC02D
+    style N6 fill:#E9F7E8,stroke:#6EB76D
+    style N7 fill:#E9F7E8,stroke:#6EB76D
+    style N8 fill:#E9F7E8,stroke:#6EB76D
+    style N9 fill:#FBE9E7,stroke:#FF8A65
+    style N10 fill:#FBE9E7,stroke:#FF8A65
+    style N11 fill:#E9F7E8,stroke:#6EB76D
+    style N12 fill:#FBE9E7,stroke:#FF8A65
+    style N13 fill:#E9F7E8,stroke:#6EB76D
+    style N14 fill:#E9F7E8,stroke:#6EB76D
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S1 fill:#FFFDE7,stroke:#FBC02D
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_0 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_1 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_0 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_2 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_3 fill:#FFFDE7,stroke:#FBC02D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_404.mmd b/train/mermaid/hard/mermaid_404.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..daa663801f373b019e0d02b6320d2a5b226f6c77
--- /dev/null
+++ b/train/mermaid/hard/mermaid_404.mmd
@@ -0,0 +1,86 @@
+graph RL
+    N0([Sustainable Aviation Fuel Development])
+    N1([Aircraft De_icing])
+    N2[/Noise Abatement Procedures/]
+    N3[Air Traffic Control]
+    N4(Aircraft Maintenance)
+    N5(Weather Briefing)
+    N6(Aircraft Manufacturing)
+    S0(( ))
+    S1(( ))
+    subgraph Cargo Loading
+        nest0_0[/Airport Operations/]
+        nest0_1[[Airworthiness Certification]]
+        nest0_2{Flight Simulation}
+    end
+    subgraph Security Screening
+        nest1_0[Gate Assignment]
+        nest1_1[/Crew Scheduling/]
+        nest1_2[/Passenger Check_in/]
+        nest1_3[Delay Management]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    nest0_0 -.-> |designs| nest0_1
+    nest0_1 --> nest0_2
+    N2 --> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 -.-> N6
+    N1 --> S0
+    S0 -.-> N3
+    S0 -.-> N4
+    N2 --> S1
+    S1 -.-> N6
+    S1 --> N5
+    N3 -.-> N1
+    N0 -.-> N5
+    N2 -.-> N5
+    style N0 fill:#FFCCBC,stroke:#FF5722
+    style N1 fill:#FFCCBC,stroke:#FF5722
+    style N2 fill:#FFCCBC,stroke:#FF5722
+    style N3 fill:#D1C4E9,stroke:#7E57C2
+    style N4 fill:#D1C4E9,stroke:#7E57C2
+    style N5 fill:#FFCCBC,stroke:#FF5722
+    style N6 fill:#D1C4E9,stroke:#7E57C2
+    style S0 fill:#FFCCBC,stroke:#FF5722
+    style S1 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_0 fill:#FFCCBC,stroke:#FF5722
+    style nest0_1 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_2 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_0 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_1 fill:#D1C4E9,stroke:#7E57C2
+    style nest1_2 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_3 fill:#FFCCBC,stroke:#FF5722
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_405.txt b/train/mermaid/hard/mermaid_405.txt
new file mode 100644
index 0000000000000000000000000000000000000000..16cd43095d0317671483e37745efaa908a951415
--- /dev/null
+++ b/train/mermaid/hard/mermaid_405.txt
@@ -0,0 +1,44 @@
+<Air Cargo Logistics, connectedTo, Airport Security Management>
+<Air Cargo Logistics, connectedTo, Engine Overhaul>
+<Air Cargo Logistics, connectedTo, Weather Briefing>
+<Aircraft De_icing, connectedTo, Air Cargo Logistics>
+<Aircraft De_icing, connectedTo, Crew Resource Management>
+<Aircraft De_icing, connectedTo, Engine Overhaul>
+<Aircraft Maintenance, connectedTo, Aviation Safety Investigation>
+<Aircraft Maintenance, partOf, Regulatory Compliance>
+<Airport Security Management, connectedTo, Emergency Procedures Training>
+<Airport Security Management, connectedTo, Sustainable Aviation Fuel Development>
+<Aviation Safety Investigation, connectedTo, Weather Briefing>
+<Aviation Safety Investigation, partOf, Regulatory Compliance>
+<Avionics Repair, connectedTo, Airport Security Management>
+<Crew Resource Management, connectedTo, Passenger Boarding>
+<Crew Resource Management, partOf, Airworthiness Certification>
+<Emergency Procedures Training, connectedTo, Route Optimization>
+<Engine Overhaul, connectedTo, Aircraft Manufacturing>
+<Engine Overhaul, connectedTo, Airport Security Management>
+<Engine Overhaul, connectedTo, Avionics Repair>
+<Engine Overhaul, connectedTo, Emergency Procedures Training>
+<Engine Overhaul, connectedTo, Remote Tower Operations>
+<Fleet Management, connectedTo, Next_Generation Air Traffic Management>
+<Flight Simulation, connectedTo, Aircraft De_icing>
+<Flight Simulation, connectedTo, Airport Security Management>
+<Flight Simulation, connectedTo, Emergency Procedures Training>
+<Flight Simulation, reports, Next_Generation Air Traffic Management>
+<Fueling Operations, connectedTo, Runway Management>
+<Fueling Operations, partOf, Airworthiness Certification>
+<Ground Support, connectedTo, Aircraft Maintenance>
+<Ground Support, partOf, Regulatory Compliance>
+<Next_Generation Air Traffic Management, connectedTo, Airport Security Management>
+<Next_Generation Air Traffic Management, connectedTo, Avionics Repair>
+<Passenger Boarding, connectedTo, Fueling Operations>
+<Passenger Boarding, partOf, Airworthiness Certification>
+<Pilot Training, connectedTo, Aircraft Manufacturing>
+<Remote Tower Operations, connectedTo, Airport Security Management>
+<Remote Tower Operations, connectedTo, Fleet Management>
+<Remote Tower Operations, connectedTo, Pilot Training>
+<Route Optimization, connectedTo, Pilot Training>
+<Runway Management, connectedTo, Remote Tower Operations>
+<Runway Management, partOf, Airworthiness Certification>
+<Sustainable Aviation Fuel Development, connectedTo, Ground Support>
+<Sustainable Aviation Fuel Development, partOf, Regulatory Compliance>
+<Weather Briefing, connectedTo, Engine Overhaul>
diff --git a/train/mermaid/hard/mermaid_409.mmd b/train/mermaid/hard/mermaid_409.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..bb684978a5d1455f2a7f40b7fb8a75bab0d12cb8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_409.mmd
@@ -0,0 +1,108 @@
+graph RL
+    N0([GPS Positioning])
+    N1([Points of Interest Search])
+    N2[[Voice Guidance Customization]]
+    N3(Waypoint Setting)
+    N4{Location_Based Services}
+    N5[/Satellite Navigation Systems/]
+    N6[(Pedestrian Navigation)]
+    N7[(Real_Time Re_routing)]
+    N8[Digital Compass Integration]
+    N9(Bearing and Distance Calculation)
+    N10[(Autonomous Vehicle Navigation)]
+    N11{Geocoding}
+    N12([Navigation Data Update])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Map Display
+        nest0_0[[Turn_by_Turn Directions]]
+        nest0_1(Celestial Navigation)
+    end
+    subgraph Terrestrial Navigation
+        nest1_0([Traffic Information])
+        nest1_1[Topographic Mapping]
+    end
+    N0 -.-> |interprets| N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |communicates| N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 --> N12
+    nest1_0 -.-> nest1_1
+    N7 -.-> nest1_0
+    nest1_1 --> |corrects| N9
+    N7 --> S0
+    S0 --> N9
+    S0 -.-> |alerts| N11
+    N5 --> S1
+    S1 -.-> N7
+    S1 -.-> N11
+    N0 -.-> M0
+    N1 --> M0
+    M0 -.-> N3
+    N2 -.-> M2
+    N5 -.-> |records| M2
+    M2 -.-> N8
+    style N0 fill:#D3D7EB,stroke:#8C9EFF
+    style N1 fill:#FBE9E7,stroke:#FF8A65
+    style N2 fill:#E9F7E8,stroke:#6EB76D
+    style N3 fill:#FBE9E7,stroke:#FF8A65
+    style N4 fill:#FBE9E7,stroke:#FF8A65
+    style N5 fill:#D3D7EB,stroke:#8C9EFF
+    style N6 fill:#E9F7E8,stroke:#6EB76D
+    style N7 fill:#E9F7E8,stroke:#6EB76D
+    style N8 fill:#FBE9E7,stroke:#FF8A65
+    style N9 fill:#FBE9E7,stroke:#FF8A65
+    style N10 fill:#D3D7EB,stroke:#8C9EFF
+    style N11 fill:#E9F7E8,stroke:#6EB76D
+    style N12 fill:#FBE9E7,stroke:#FF8A65
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#E9F7E8,stroke:#6EB76D
+    style M2 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_0 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_1 fill:#E9F7E8,stroke:#6EB76D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_410.mmd b/train/mermaid/hard/mermaid_410.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..46245c23b39f36fd42f157c4e1aabd73b3ea1ba5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_410.mmd
@@ -0,0 +1,82 @@
+graph TD
+    N0([start])
+    N1([Topographic Mapping])
+    N2[(Digital Compass Integration)]
+    N3(Aeronautical Charting)
+    N4([Points of Interest Search])
+    N5(Inertial Navigation System)
+    N6[[Hazard Alerts]]
+    N7[/Autonomous Vehicle Navigation/]
+    N8[[Lane Guidance]]
+    S0(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Route Calculation
+        nest0_0[Voice Guidance Customization]
+        nest0_1[Public Transit Navigation]
+        nest0_2[Reverse Geocoding]
+    end
+    subgraph Indoor Navigation
+        nest1_0[Location_Based Services]
+        nest1_1([Offline Map Support])
+        nest1_2(Celestial Navigation)
+        nest1_3[(Geofencing)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N4 --> nest0_0
+    nest0_2 --> N6
+    nest1_0 --> |yes| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N5 --> nest1_0
+    nest1_3 -.-> N8
+    N3 --> S0
+    S0 -.-> N7
+    S0 -.-> N6
+    N3 --> S2
+    S2 -.-> |yes| N6
+    S2 --> N5
+    N3 --> M1
+    N1 -.-> M1
+    N0 -.-> M1
+    M1 -.-> N5
+    style S0 fill:#D1C4E9,stroke:#7E57C2
+    style S2 fill:#D1C4E9,stroke:#7E57C2
+    style M1 fill:#F3E5F5,stroke:#BA68C8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7E57C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_412.txt b/train/mermaid/hard/mermaid_412.txt
new file mode 100644
index 0000000000000000000000000000000000000000..bbeebd4b3051055148aa6dceab9e77a0d334fa63
--- /dev/null
+++ b/train/mermaid/hard/mermaid_412.txt
@@ -0,0 +1,37 @@
+<Autonomous Vehicle Navigation, connectedTo, Speed Calculation>
+<Autonomous Vehicle Navigation, no, Geocoding>
+<Dead Reckoning, connectedTo, Navigation Data Update>
+<Dead Reckoning, connectedTo, Offline Map Support>
+<Dead Reckoning, connectedTo, Speed Calculation>
+<ETA Estimation, connectedTo, Inertial Navigation System>
+<ETA Estimation, connectedTo, Satellite Navigation Systems>
+<ETA Estimation, yes, Offline Map Support>
+<Geocoding, connectedTo, Pedestrian Navigation>
+<Geocoding, partOf, Traffic Information>
+<Geofencing, connectedTo, Public Transit Navigation>
+<Geofencing, partOf, GPS Positioning>
+<Inertial Navigation System, connectedTo, Satellite Navigation Systems>
+<Inertial Navigation System, connectedTo, Speed Calculation>
+<Map Display, connectedTo, Offline Map Support>
+<Map Display, connectedTo, Public Transit Navigation>
+<Map Display, no, Real_Time Re_routing>
+<Marine Charting, connectedTo, Geofencing>
+<Marine Charting, partOf, GPS Positioning>
+<Navigation Data Update, connectedTo, ETA Estimation>
+<Navigation Data Update, connectedTo, Speed Calculation>
+<Offline Map Support, connectedTo, Autonomous Vehicle Navigation>
+<Pedestrian Navigation, connectedTo, Real_Time Re_routing>
+<Pedestrian Navigation, partOf, Traffic Information>
+<Public Transit Navigation, connectedTo, Topographic Mapping>
+<Real_Time Re_routing, connectedTo, Dead Reckoning>
+<Route Calculation, connectedTo, Marine Charting>
+<Route Calculation, partOf, GPS Positioning>
+<Satellite Navigation Systems, connectedTo, Autonomous Vehicle Navigation>
+<Satellite Navigation Systems, connectedTo, Public Transit Navigation>
+<Topographic Mapping, connectedTo, Voice Guidance Customization>
+<Turn_by_Turn Directions, connectedTo, Route Calculation>
+<Turn_by_Turn Directions, partOf, GPS Positioning>
+<Voice Guidance Customization, connectedTo, Turn_by_Turn Directions>
+<Voice Guidance Customization, yes, Offline Map Support>
+<start, connectedTo, Autonomous Vehicle Navigation>
+<start, connectedTo, Map Display>
diff --git a/train/mermaid/hard/mermaid_416.txt b/train/mermaid/hard/mermaid_416.txt
new file mode 100644
index 0000000000000000000000000000000000000000..14b57aa6ef88167ea051437fae51a46a2258fb47
--- /dev/null
+++ b/train/mermaid/hard/mermaid_416.txt
@@ -0,0 +1,42 @@
+<Aeronautical Charting, connectedTo, Satellite Navigation Systems>
+<Altitude Tracking, connectedTo, Topographic Mapping>
+<Celestial Navigation, connectedTo, Wearable Device Navigation>
+<Cycle Route Planning, connectedTo, Waypoint Setting>
+<Dead Reckoning, connectedTo, Route Calculation>
+<Geofencing, connectedTo, Celestial Navigation>
+<Historical Traffic Data Analysis, connectedTo, Personalized Route Preferences>
+<Historical Traffic Data Analysis, partOf, Digital Compass Integration>
+<Indoor Navigation, connectedTo, Location_Based Services>
+<Indoor Navigation, partOf, Map Display>
+<Lane Guidance, connectedTo, Celestial Navigation>
+<Lane Guidance, connectedTo, Dead Reckoning>
+<Lane Guidance, connectedTo, Real_Time Re_routing>
+<Lane Guidance, connectedTo, Topographic Mapping>
+<Lane Guidance, connectedTo, Waypoint Setting>
+<Location_Based Services, connectedTo, Celestial Navigation>
+<Location_Based Services, partOf, Map Display>
+<Marine Charting, secures, Reverse Geocoding>
+<Personalized Route Preferences, connectedTo, Geofencing>
+<Public Transit Navigation, connectedTo, Real_Time Re_routing>
+<Public Transit Navigation, connectedTo, Turn_by_Turn Directions>
+<Real_Time Re_routing, connectedTo, Personalized Route Preferences>
+<Reverse Geocoding, connectedTo, Geocoding>
+<Route Calculation, connectedTo, Aeronautical Charting>
+<Route Calculation, connectedTo, Cycle Route Planning>
+<Route Calculation, connectedTo, Geofencing>
+<Route Calculation, connectedTo, Satellite Navigation Systems>
+<Route Calculation, connectedTo, Topographic Mapping>
+<Route Calculation, connectedTo, Waypoint Setting>
+<Route Calculation, connectedTo, Wearable Device Navigation>
+<Satellite Navigation Systems, connectedTo, Public Transit Navigation>
+<Terrestrial Navigation, connectedTo, Traffic Information>
+<Terrestrial Navigation, partOf, Digital Compass Integration>
+<Topographic Mapping, connectedTo, Terrestrial Navigation>
+<Topographic Mapping, verifies, Aeronautical Charting>
+<Traffic Information, connectedTo, Historical Traffic Data Analysis>
+<Traffic Information, partOf, Digital Compass Integration>
+<Turn_by_Turn Directions, connectedTo, Indoor Navigation>
+<Turn_by_Turn Directions, partOf, Map Display>
+<Waypoint Setting, calculates, Topographic Mapping>
+<Waypoint Setting, connectedTo, Altitude Tracking>
+<Wearable Device Navigation, connectedTo, Marine Charting>
diff --git a/train/mermaid/hard/mermaid_417.mmd b/train/mermaid/hard/mermaid_417.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6ea75327ec19ceb65b9b7f99a81712a2b2290fe9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_417.mmd
@@ -0,0 +1,142 @@
+graph LR
+    N0([Mass Customization])
+    N1[[Maintenance and Repair of Printers]]
+    N2(Post_Processing)
+    N3[Bioprinting]
+    N4(Fused Deposition Modeling)
+    N5(Rapid Manufacturing)
+    N6[[Construction 3D Printing]]
+    N7(Print Farm Management)
+    N8(Digital Twin for 3D Prints)
+    N9[Educational Applications]
+    N10([Additive Manufacturing])
+    N11[(Prototyping)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Intellectual Property Protection for Designs
+        nest0_0[/3D Model Design/]
+        nest0_1(Stereolithography)
+        nest0_2([Multi_Material Printing])
+        nest0_3(Printing Parameter Optimization)
+    end
+    subgraph Reverse Engineering with 3D Printing
+        nest1_0[Selective Laser Sintering]
+        nest1_1[[Scaffolding for Tissue Engineering]]
+        nest1_2(Material Research and Development)
+        nest1_3(Slicing Software Operation)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |troubleshoots| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> |designs| N11
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N8 --> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> |scans| nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> N8
+    N5 -.-> S0
+    S0 -.-> N7
+    S0 -.-> N11
+    N7 --> S1
+    S1 --> N9
+    S1 -.-> N11
+    N4 -.-> S2
+    S2 -.-> |engineers| N6
+    S2 --> N8
+    S2 --> N10
+    S2 -.-> N9
+    N1 --> M0
+    N0 -.-> M0
+    M0 -.-> N3
+    N5 -.-> |models| M1
+    N4 --> M1
+    N0 -.-> M1
+    M1 -.-> N10
+    N1 --> |designs| M2
+    N3 -.-> |innovates| M2
+    M2 --> N6
+    style N0 fill:#C2E8E6,stroke:#61CAC3
+    style N1 fill:#C2E8E6,stroke:#61CAC3
+    style N2 fill:#C2E8E6,stroke:#61CAC3
+    style N3 fill:#FCFCE7,stroke:#DCE775
+    style N4 fill:#C2E8E6,stroke:#61CAC3
+    style N5 fill:#C2E8E6,stroke:#61CAC3
+    style N6 fill:#C2E8E6,stroke:#61CAC3
+    style N7 fill:#C2E8E6,stroke:#61CAC3
+    style N8 fill:#FCFCE7,stroke:#DCE775
+    style N9 fill:#C2E8E6,stroke:#61CAC3
+    style N10 fill:#B3E5FC,stroke:#03A9F4
+    style N11 fill:#FCFCE7,stroke:#DCE775
+    style S0 fill:#B3E5FC,stroke:#03A9F4
+    style S1 fill:#B3E5FC,stroke:#03A9F4
+    style S2 fill:#FCFCE7,stroke:#DCE775
+    style M0 fill:#C2E8E6,stroke:#61CAC3
+    style M1 fill:#B3E5FC,stroke:#03A9F4
+    style M2 fill:#FCFCE7,stroke:#DCE775
+    style nest0_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_1 fill:#FCFCE7,stroke:#DCE775
+    style nest0_2 fill:#FCFCE7,stroke:#DCE775
+    style nest0_3 fill:#FCFCE7,stroke:#DCE775
+    style nest1_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_2 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_3 fill:#FCFCE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_418.txt b/train/mermaid/hard/mermaid_418.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6358ce09278c636df85f5f0c0a117c7021ea06b1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_418.txt
@@ -0,0 +1,38 @@
+<3D Model Design, connectedTo, Bioprinting>
+<3D Printed Tooling, connectedTo, Printing Parameter Optimization>
+<3D Printed Tooling, partOf, Stereolithography>
+<Additive Manufacturing, connectedTo, Material Research and Development>
+<Additive Manufacturing, partOf, Stereolithography>
+<Bioprinting, connectedTo, Scaffolding for Tissue Engineering>
+<Consumer Product Creation, connectedTo, Bioprinting>
+<Consumer Product Creation, connectedTo, Multi_Material Printing>
+<Consumer Product Creation, connectedTo, Printing Parameter Optimization>
+<Consumer Product Creation, connectedTo, Scaffolding for Tissue Engineering>
+<Consumer Product Creation, connectedTo, Sustainable 3D Printing Materials>
+<Digital Twin for 3D Prints, connectedTo, Quality Control>
+<Digital Twin for 3D Prints, partOf, Educational Applications>
+<Distributed Manufacturing, optimizes, 3D Model Design>
+<Fused Deposition Modeling, connectedTo, Post_Processing>
+<Fused Deposition Modeling, partOf, Educational Applications>
+<Mass Customization, connectedTo, 3D Printed Tooling>
+<Mass Customization, partOf, Stereolithography>
+<Material Research and Development, connectedTo, Mass Customization>
+<Material Research and Development, partOf, Stereolithography>
+<Post_Processing, connectedTo, Distributed Manufacturing>
+<Post_Processing, partOf, Educational Applications>
+<Printer Setup, connectedTo, Distributed Manufacturing>
+<Printer Setup, connectedTo, Printing Parameter Optimization>
+<Printer Setup, integrates, Bioprinting>
+<Printer Setup, shares, Bioprinting>
+<Printing Parameter Optimization, connectedTo, Additive Manufacturing>
+<Printing Parameter Optimization, connectedTo, Multi_Material Printing>
+<Quality Control, connectedTo, Fused Deposition Modeling>
+<Quality Control, partOf, Educational Applications>
+<Scaffolding for Tissue Engineering, connectedTo, Printing Parameter Optimization>
+<Sustainable 3D Printing Materials, connectedTo, Digital Twin for 3D Prints>
+<Sustainable 3D Printing Materials, connectedTo, Scaffolding for Tissue Engineering>
+<Sustainable 3D Printing Materials, manufactures, Bioprinting>
+<Sustainable 3D Printing Materials, models, Printer Setup>
+<start, connectedTo, Consumer Product Creation>
+<start, connectedTo, Printing Parameter Optimization>
+<start, connectedTo, Scaffolding for Tissue Engineering>
diff --git a/train/mermaid/hard/mermaid_419.txt b/train/mermaid/hard/mermaid_419.txt
new file mode 100644
index 0000000000000000000000000000000000000000..474b153603b6a5a78d2f4475b036a320a5955690
--- /dev/null
+++ b/train/mermaid/hard/mermaid_419.txt
@@ -0,0 +1,31 @@
+<3D Printed Tooling, connectedTo, Selective Laser Sintering>
+<Custom Part Production, connectedTo, Prototyping>
+<Custom Part Production, partOf, Support Structure Design>
+<Distributed Manufacturing, replicates, Reverse Engineering with 3D Printing>
+<File Format Conversion, connectedTo, Prototyping>
+<File Format Conversion, connectedTo, Reverse Engineering with 3D Printing>
+<Intellectual Property Protection for Designs, innovates, Printer Setup>
+<Intellectual Property Protection for Designs, partOf, Quality Control>
+<Mass Customization, connectedTo, Fused Deposition Modeling>
+<Mass Customization, connectedTo, Multi_Material Printing>
+<Material Selection, connectedTo, Mass Customization>
+<Medical Device Prototyping, connectedTo, File Format Conversion>
+<Multi_Material Printing, connectedTo, Medical Device Prototyping>
+<On_Demand Production, partOf, Quality Control>
+<On_Demand Production, processes, Multi_Material Printing>
+<Printer Setup, connectedTo, On_Demand Production>
+<Printer Setup, partOf, Quality Control>
+<Printing Parameter Optimization, connectedTo, Distributed Manufacturing>
+<Printing Parameter Optimization, connectedTo, Reverse Engineering with 3D Printing>
+<Printing Parameter Optimization, educates, Troubleshooting Print Errors>
+<Prototyping, connectedTo, Intellectual Property Protection for Designs>
+<Prototyping, connectedTo, Printing Parameter Optimization>
+<Prototyping, connectedTo, Reverse Engineering with 3D Printing>
+<Rapid Manufacturing, connectedTo, Custom Part Production>
+<Rapid Manufacturing, partOf, Support Structure Design>
+<Reverse Engineering with 3D Printing, connectedTo, Material Selection>
+<Selective Laser Sintering, connectedTo, Multi_Material Printing>
+<Selective Laser Sintering, connectedTo, Prototyping>
+<Selective Laser Sintering, protects, Printing Parameter Optimization>
+<Troubleshooting Print Errors, connectedTo, Rapid Manufacturing>
+<Troubleshooting Print Errors, partOf, Support Structure Design>
diff --git a/train/mermaid/hard/mermaid_42.mmd b/train/mermaid/hard/mermaid_42.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..33e71dfc6d4fb21ea80a87945443b89bc08fd930
--- /dev/null
+++ b/train/mermaid/hard/mermaid_42.mmd
@@ -0,0 +1,136 @@
+graph LR
+    N0([Fare Calculation])
+    N1[[Vehicle Tracking]]
+    N2{Navigation Update}
+    N3{Arrival}
+    N4[Route Optimization]
+    N5[/Traffic Monitoring/]
+    N6(Maintenance Check)
+    N7[/Train Dispatch/]
+    N8[Passenger Boarding Pass Issuance]
+    N9[Luggage Handling]
+    N10[[Load Balancing]]
+    N11{Air Traffic Control}
+    N12[(Road Network Management)]
+    N13(Bus Stop Management)
+    N14{Tunnel Monitoring}
+    N15[[Route Diversion]]
+    N16{Weather Impact Assessment}
+    N17([Electric Vehicle Charging])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Incident Report
+        nest0_0[(Driver Allocation)]
+        nest0_1[/Parking Management/]
+        nest0_2{Public Transport Ticketing}
+    end
+    subgraph Passenger Feedback
+        nest1_0(Location Input)
+        nest1_1[(Fueling)]
+        nest1_2(Boarding)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |assesses| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |updates| N9
+    N9 -.-> N10
+    N10 --> |books| N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N10 -.-> nest0_0
+    nest0_2 --> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 --> |permits| nest1_2
+    N15 --> |arrives| nest1_0
+    nest1_2 -.-> N13
+    N8 -.-> S0
+    S0 -.-> |predicts| N11
+    S0 -.-> N13
+    N12 -.-> S1
+    S1 --> N17
+    S1 --> |loads| N14
+    N6 --> M1
+    N1 -.-> M1
+    M1 --> N15
+    N1 -.-> M2
+    N9 -.-> M2
+    M2 -.-> N17
+    style N0 fill:#E9F7E8,stroke:#6EB76D
+    style N1 fill:#FFFDE7,stroke:#FBC02D
+    style N2 fill:#FFFDE7,stroke:#FBC02D
+    style N3 fill:#DFE7EB,stroke:#B0C5CD
+    style N4 fill:#FFFDE7,stroke:#FBC02D
+    style N5 fill:#E9F7E8,stroke:#6EB76D
+    style N6 fill:#FFFDE7,stroke:#FBC02D
+    style N7 fill:#FFFDE7,stroke:#FBC02D
+    style N8 fill:#FFFDE7,stroke:#FBC02D
+    style N9 fill:#DFE7EB,stroke:#B0C5CD
+    style N10 fill:#E9F7E8,stroke:#6EB76D
+    style N11 fill:#FFFDE7,stroke:#FBC02D
+    style N12 fill:#E9F7E8,stroke:#6EB76D
+    style N13 fill:#E9F7E8,stroke:#6EB76D
+    style N14 fill:#E9F7E8,stroke:#6EB76D
+    style N15 fill:#DFE7EB,stroke:#B0C5CD
+    style N16 fill:#E9F7E8,stroke:#6EB76D
+    style N17 fill:#E9F7E8,stroke:#6EB76D
+    style S0 fill:#E9F7E8,stroke:#6EB76D
+    style S1 fill:#FFFDE7,stroke:#FBC02D
+    style M1 fill:#E9F7E8,stroke:#6EB76D
+    style M2 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_2 fill:#DFE7EB,stroke:#B0C5CD
+    style nest1_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_2 fill:#DFE7EB,stroke:#B0C5CD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#B0C5CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_421.mmd b/train/mermaid/hard/mermaid_421.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..bfbe07f24ef2a604202d73ee3a515ff2b4468f62
--- /dev/null
+++ b/train/mermaid/hard/mermaid_421.mmd
@@ -0,0 +1,122 @@
+graph RL
+    N0([Bioprinting])
+    N1[[Reverse Engineering with 3D Printing]]
+    N2[Troubleshooting Print Errors]
+    N3[Consumer Product Creation]
+    N4([Scaffolding for Tissue Engineering])
+    N5(Sustainable 3D Printing Materials)
+    N6(Digital Twin for 3D Prints)
+    N7(Material Selection)
+    N8[Maintenance and Repair of Printers]
+    N9[Quality Control]
+    N10(Aerospace Part Production)
+    N11(Printing Parameter Optimization)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Prototyping
+        nest0_0[(On_Demand Production)]
+        nest0_1[[Support Structure Design]]
+        nest0_2[[Post_Processing]]
+        nest0_3[Medical Device Prototyping]
+    end
+    subgraph 3D Printed Tooling
+        nest1_0[4D Printing]
+        nest1_1[Direct Metal Laser Sintering]
+        nest1_2([Printer Setup])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> |designs| N4
+    N4 --> |replicates| N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N10 -.-> nest0_0
+    nest0_3 -.-> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N9 -.-> nest1_0
+    nest1_2 --> N7
+    N1 -.-> S0
+    S0 -.-> N11
+    S0 --> N8
+    N8 --> S1
+    S1 --> N10
+    S1 -.-> N11
+    N5 -.-> S2
+    S2 -.-> N7
+    S2 -.-> N8
+    S2 -.-> N9
+    N1 -.-> M1
+    N0 -.-> M1
+    N3 -.-> M1
+    N2 -.-> M1
+    M1 --> N5
+    style N0 fill:#F1F8FF,stroke:#42A5F5
+    style N1 fill:#FFF3E0,stroke:#FFB74D
+    style N2 fill:#F1F8FF,stroke:#42A5F5
+    style N3 fill:#F1F8FF,stroke:#42A5F5
+    style N4 fill:#EDE7F6,stroke:#7E57C2
+    style N5 fill:#F1F8FF,stroke:#42A5F5
+    style N6 fill:#F1F8FF,stroke:#42A5F5
+    style N7 fill:#F1F8FF,stroke:#42A5F5
+    style N8 fill:#FFF3E0,stroke:#FFB74D
+    style N9 fill:#FFF3E0,stroke:#FFB74D
+    style N10 fill:#FFF3E0,stroke:#FFB74D
+    style N11 fill:#EDE7F6,stroke:#7E57C2
+    style S0 fill:#EDE7F6,stroke:#7E57C2
+    style S1 fill:#FFF3E0,stroke:#FFB74D
+    style S2 fill:#F1F8FF,stroke:#42A5F5
+    style M1 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_1 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_2 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_3 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_0 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_1 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_2 fill:#FFF3E0,stroke:#FFB74D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_421.txt b/train/mermaid/hard/mermaid_421.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6d875889ac8cfdb56d09347bd645eda2f81a8580
--- /dev/null
+++ b/train/mermaid/hard/mermaid_421.txt
@@ -0,0 +1,38 @@
+<4D Printing, connectedTo, Direct Metal Laser Sintering>
+<4D Printing, partOf, 3D Printed Tooling>
+<Aerospace Part Production, connectedTo, On_Demand Production>
+<Aerospace Part Production, connectedTo, Printing Parameter Optimization>
+<Bioprinting, connectedTo, Reverse Engineering with 3D Printing>
+<Bioprinting, connectedTo, Sustainable 3D Printing Materials>
+<Consumer Product Creation, connectedTo, Sustainable 3D Printing Materials>
+<Consumer Product Creation, designs, Scaffolding for Tissue Engineering>
+<Digital Twin for 3D Prints, connectedTo, Material Selection>
+<Direct Metal Laser Sintering, connectedTo, Printer Setup>
+<Direct Metal Laser Sintering, partOf, 3D Printed Tooling>
+<Maintenance and Repair of Printers, connectedTo, Aerospace Part Production>
+<Maintenance and Repair of Printers, connectedTo, Printing Parameter Optimization>
+<Maintenance and Repair of Printers, connectedTo, Quality Control>
+<Material Selection, connectedTo, Maintenance and Repair of Printers>
+<Medical Device Prototyping, connectedTo, Maintenance and Repair of Printers>
+<Medical Device Prototyping, partOf, Prototyping>
+<On_Demand Production, connectedTo, Support Structure Design>
+<On_Demand Production, partOf, Prototyping>
+<Post_Processing, connectedTo, Medical Device Prototyping>
+<Post_Processing, partOf, Prototyping>
+<Printer Setup, connectedTo, Material Selection>
+<Printer Setup, partOf, 3D Printed Tooling>
+<Quality Control, connectedTo, 4D Printing>
+<Quality Control, connectedTo, Aerospace Part Production>
+<Reverse Engineering with 3D Printing, connectedTo, Maintenance and Repair of Printers>
+<Reverse Engineering with 3D Printing, connectedTo, Printing Parameter Optimization>
+<Reverse Engineering with 3D Printing, connectedTo, Sustainable 3D Printing Materials>
+<Reverse Engineering with 3D Printing, connectedTo, Troubleshooting Print Errors>
+<Scaffolding for Tissue Engineering, replicates, Sustainable 3D Printing Materials>
+<Support Structure Design, connectedTo, Post_Processing>
+<Support Structure Design, partOf, Prototyping>
+<Sustainable 3D Printing Materials, connectedTo, Digital Twin for 3D Prints>
+<Sustainable 3D Printing Materials, connectedTo, Maintenance and Repair of Printers>
+<Sustainable 3D Printing Materials, connectedTo, Material Selection>
+<Sustainable 3D Printing Materials, connectedTo, Quality Control>
+<Troubleshooting Print Errors, connectedTo, Consumer Product Creation>
+<Troubleshooting Print Errors, connectedTo, Sustainable 3D Printing Materials>
diff --git a/train/mermaid/hard/mermaid_422.mmd b/train/mermaid/hard/mermaid_422.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..257c51d96ba1b1fc705df3a706561314ccb0d848
--- /dev/null
+++ b/train/mermaid/hard/mermaid_422.mmd
@@ -0,0 +1,150 @@
+graph RL
+    N0([Reverse Engineering with 3D Printing])
+    N1(Fused Deposition Modeling)
+    N2(Printing Parameter Optimization)
+    N3[[Print Farm Management]]
+    N4[[Consumer Product Creation]]
+    N5[Selective Laser Sintering]
+    N6[[3D Printed Tooling]]
+    N7[Material Selection]
+    N8[(Prototyping)]
+    N9[(Scaffolding for Tissue Engineering)]
+    N10[Troubleshooting Print Errors]
+    N11(Printer Setup)
+    N12[/Maintenance and Repair of Printers/]
+    N13{Aerospace Part Production}
+    N14[(3D Model Design)]
+    N15[Support Structure Design]
+    N16[Distributed Manufacturing]
+    N17[Slicing Software Operation]
+    N18{Additive Manufacturing}
+    N19([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Sustainable 3D Printing Materials
+        nest0_0(Bioprinting)
+        nest0_1[Material Research and Development]
+    end
+    subgraph Multi_Material Printing
+        nest1_0[On_Demand Production]
+        nest1_1([Digital Twin for 3D Prints])
+        nest1_2(4D Printing)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> |certifies| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> |creates| N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> |calibrates| N15
+    N15 --> |models| N16
+    N16 -.-> N17
+    N17 -.-> |engineers| N18
+    N18 -.-> N19
+    nest0_0 -.-> nest0_1
+    N10 -.-> nest0_0
+    nest0_1 --> N17
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N13 -.-> nest1_0
+    nest1_2 --> N13
+    N15 -.-> S0
+    S0 --> N17
+    S0 -.-> N19
+    N13 --> S1
+    S1 -.-> N15
+    S1 -.-> N17
+    N2 --> S2
+    S2 --> N17
+    S2 -.-> |monitors| N9
+    S2 --> N19
+    N7 -.-> M0
+    N10 -.-> M0
+    M0 --> N15
+    N0 -.-> M1
+    N1 -.-> M1
+    M1 -.-> N4
+    style N0 fill:#FFEBEB,stroke:#FFC2C2
+    style N1 fill:#E1F5FE,stroke:#4FC3F7
+    style N2 fill:#E1F5FE,stroke:#4FC3F7
+    style N3 fill:#D0E0F8,stroke:#4285F4
+    style N4 fill:#D0E0F8,stroke:#4285F4
+    style N5 fill:#D0E0F8,stroke:#4285F4
+    style N6 fill:#E1F5FE,stroke:#4FC3F7
+    style N7 fill:#E1F5FE,stroke:#4FC3F7
+    style N8 fill:#E1F5FE,stroke:#4FC3F7
+    style N9 fill:#E1F5FE,stroke:#4FC3F7
+    style N10 fill:#E1F5FE,stroke:#4FC3F7
+    style N11 fill:#FFEBEB,stroke:#FFC2C2
+    style N12 fill:#FFEBEB,stroke:#FFC2C2
+    style N13 fill:#FFEBEB,stroke:#FFC2C2
+    style N14 fill:#FFEBEB,stroke:#FFC2C2
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+    style N17 fill:#E1F5FE,stroke:#4FC3F7
+    style N18 fill:#E1F5FE,stroke:#4FC3F7
+    style N19 fill:#E1F5FE,stroke:#4FC3F7
+    style S0 fill:#E1F5FE,stroke:#4FC3F7
+    style S1 fill:#D0E0F8,stroke:#4285F4
+    style S2 fill:#FFEBEB,stroke:#FFC2C2
+    style M0 fill:#D0E0F8,stroke:#4285F4
+    style M1 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_0 fill:#E1F5FE,stroke:#4FC3F7
+    style nest0_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_0 fill:#D0E0F8,stroke:#4285F4
+    style nest1_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_2 fill:#FFEBEB,stroke:#FFC2C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4285F4,stroke-width:2px,fill:none;
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+    linkStyle 9 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC2C2,stroke-width:2px,fill:none;
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+    linkStyle 20 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 25 stroke:#FFC2C2,stroke-width:2px,fill:none;
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+    linkStyle 28 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC2C2,stroke-width:2px,fill:none;
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+    linkStyle 34 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#4FC3F7,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_422.txt b/train/mermaid/hard/mermaid_422.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2a85bdae667c388e6bfd1e081c4ada720a1be0eb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_422.txt
@@ -0,0 +1,42 @@
+<3D Model Design, calibrates, Support Structure Design>
+<3D Printed Tooling, connectedTo, Material Selection>
+<4D Printing, connectedTo, Aerospace Part Production>
+<4D Printing, partOf, Multi_Material Printing>
+<Additive Manufacturing, connectedTo, end>
+<Aerospace Part Production, connectedTo, 3D Model Design>
+<Aerospace Part Production, connectedTo, On_Demand Production>
+<Aerospace Part Production, connectedTo, Slicing Software Operation>
+<Aerospace Part Production, connectedTo, Support Structure Design>
+<Bioprinting, connectedTo, Material Research and Development>
+<Bioprinting, partOf, Sustainable 3D Printing Materials>
+<Consumer Product Creation, connectedTo, Selective Laser Sintering>
+<Digital Twin for 3D Prints, connectedTo, 4D Printing>
+<Digital Twin for 3D Prints, partOf, Multi_Material Printing>
+<Distributed Manufacturing, connectedTo, Slicing Software Operation>
+<Fused Deposition Modeling, connectedTo, Consumer Product Creation>
+<Fused Deposition Modeling, connectedTo, Printing Parameter Optimization>
+<Maintenance and Repair of Printers, connectedTo, Aerospace Part Production>
+<Material Research and Development, connectedTo, Slicing Software Operation>
+<Material Research and Development, partOf, Sustainable 3D Printing Materials>
+<Material Selection, connectedTo, Support Structure Design>
+<Material Selection, creates, Prototyping>
+<On_Demand Production, connectedTo, Digital Twin for 3D Prints>
+<On_Demand Production, partOf, Multi_Material Printing>
+<Print Farm Management, certifies, Consumer Product Creation>
+<Printer Setup, connectedTo, Maintenance and Repair of Printers>
+<Printing Parameter Optimization, connectedTo, Print Farm Management>
+<Printing Parameter Optimization, connectedTo, Slicing Software Operation>
+<Printing Parameter Optimization, connectedTo, end>
+<Printing Parameter Optimization, monitors, Scaffolding for Tissue Engineering>
+<Prototyping, connectedTo, Scaffolding for Tissue Engineering>
+<Reverse Engineering with 3D Printing, connectedTo, Consumer Product Creation>
+<Reverse Engineering with 3D Printing, connectedTo, Fused Deposition Modeling>
+<Scaffolding for Tissue Engineering, connectedTo, Troubleshooting Print Errors>
+<Selective Laser Sintering, connectedTo, 3D Printed Tooling>
+<Slicing Software Operation, engineers, Additive Manufacturing>
+<Support Structure Design, connectedTo, Slicing Software Operation>
+<Support Structure Design, connectedTo, end>
+<Support Structure Design, models, Distributed Manufacturing>
+<Troubleshooting Print Errors, connectedTo, Bioprinting>
+<Troubleshooting Print Errors, connectedTo, Printer Setup>
+<Troubleshooting Print Errors, connectedTo, Support Structure Design>
diff --git a/train/mermaid/hard/mermaid_423.mmd b/train/mermaid/hard/mermaid_423.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4189345b12ebe1c553a4b2fe56446acbb648f2f6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_423.mmd
@@ -0,0 +1,112 @@
+graph LR
+    N0([start])
+    N1[Scaffolding for Tissue Engineering]
+    N2[(Additive Manufacturing)]
+    N3([Printing Parameter Optimization])
+    N4[Troubleshooting Print Errors]
+    N5[/Printer Setup/]
+    N6[/Printing Process/]
+    N7[Intellectual Property Protection for Designs]
+    N8([Medical Device Prototyping])
+    N9(Bioprinting)
+    N10[Direct Metal Laser Sintering]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Maintenance and Repair of Printers
+        nest0_0[Mass Customization]
+        nest0_1[/Consumer Product Creation/]
+    end
+    subgraph Stereolithography
+        nest1_0[Slicing Software Operation]
+        nest1_1[Support Structure Design]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> |duplicates| N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> |tests| N9
+    N9 --> N10
+    nest0_0 -.-> |scans| nest0_1
+    N6 -.-> |replicates| nest0_0
+    nest0_1 --> N8
+    nest1_0 -.-> nest1_1
+    N2 --> nest1_0
+    nest1_1 --> N5
+    N5 -.-> S0
+    S0 -.-> N8
+    S0 --> N7
+    S0 -.-> N9
+    N1 --> S1
+    S1 --> N6
+    S1 --> N8
+    S1 -.-> N7
+    N3 -.-> S2
+    S2 -.-> N9
+    S2 -.-> N10
+    N2 --> M0
+    N3 --> M0
+    M0 -.-> N5
+    N0 -.-> M1
+    N2 --> M1
+    M1 -.-> N10
+    style N0 fill:#C9F0F0,stroke:#4DD0E1
+    style N1 fill:#EDF5F3,stroke:#A1D7CD
+    style N2 fill:#C9F0F0,stroke:#4DD0E1
+    style N3 fill:#C9F0F0,stroke:#4DD0E1
+    style N4 fill:#EDF5F3,stroke:#A1D7CD
+    style N5 fill:#FAEBF3,stroke:#F7BEE0
+    style N6 fill:#EDF5F3,stroke:#A1D7CD
+    style N7 fill:#C9F0F0,stroke:#4DD0E1
+    style N8 fill:#FAEBF3,stroke:#F7BEE0
+    style N9 fill:#C9F0F0,stroke:#4DD0E1
+    style N10 fill:#C9F0F0,stroke:#4DD0E1
+    style S0 fill:#C9F0F0,stroke:#4DD0E1
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style S2 fill:#EDF5F3,stroke:#A1D7CD
+    style M0 fill:#C9F0F0,stroke:#4DD0E1
+    style M1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_0 fill:#C9F0F0,stroke:#4DD0E1
+    style nest1_1 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 13 stroke:#4DD0E1,stroke-width:2px,fill:none;
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+    linkStyle 15 stroke:#4DD0E1,stroke-width:2px,fill:none;
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+    linkStyle 19 stroke:#4DD0E1,stroke-width:2px,fill:none;
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+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 25 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F7BEE0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_423.txt b/train/mermaid/hard/mermaid_423.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e97611ed4c5a6efb686a6ecd40bc680252b7dbef
--- /dev/null
+++ b/train/mermaid/hard/mermaid_423.txt
@@ -0,0 +1,32 @@
+<Additive Manufacturing, connectedTo, Direct Metal Laser Sintering>
+<Additive Manufacturing, connectedTo, Printer Setup>
+<Additive Manufacturing, connectedTo, Printing Parameter Optimization>
+<Additive Manufacturing, connectedTo, Slicing Software Operation>
+<Bioprinting, connectedTo, Direct Metal Laser Sintering>
+<Consumer Product Creation, connectedTo, Medical Device Prototyping>
+<Consumer Product Creation, partOf, Maintenance and Repair of Printers>
+<Intellectual Property Protection for Designs, connectedTo, Medical Device Prototyping>
+<Mass Customization, partOf, Maintenance and Repair of Printers>
+<Mass Customization, scans, Consumer Product Creation>
+<Medical Device Prototyping, tests, Bioprinting>
+<Printer Setup, connectedTo, Bioprinting>
+<Printer Setup, connectedTo, Intellectual Property Protection for Designs>
+<Printer Setup, connectedTo, Medical Device Prototyping>
+<Printer Setup, connectedTo, Printing Process>
+<Printing Parameter Optimization, connectedTo, Bioprinting>
+<Printing Parameter Optimization, connectedTo, Direct Metal Laser Sintering>
+<Printing Parameter Optimization, connectedTo, Printer Setup>
+<Printing Parameter Optimization, connectedTo, Troubleshooting Print Errors>
+<Printing Process, connectedTo, Intellectual Property Protection for Designs>
+<Printing Process, replicates, Mass Customization>
+<Scaffolding for Tissue Engineering, connectedTo, Additive Manufacturing>
+<Scaffolding for Tissue Engineering, connectedTo, Intellectual Property Protection for Designs>
+<Scaffolding for Tissue Engineering, connectedTo, Medical Device Prototyping>
+<Scaffolding for Tissue Engineering, connectedTo, Printing Process>
+<Slicing Software Operation, connectedTo, Support Structure Design>
+<Slicing Software Operation, partOf, Stereolithography>
+<Support Structure Design, connectedTo, Printer Setup>
+<Support Structure Design, partOf, Stereolithography>
+<Troubleshooting Print Errors, duplicates, Printer Setup>
+<start, connectedTo, Direct Metal Laser Sintering>
+<start, connectedTo, Scaffolding for Tissue Engineering>
diff --git a/train/mermaid/hard/mermaid_424.mmd b/train/mermaid/hard/mermaid_424.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c9a574885ad75b65b01a0fd2a19ae209347c4e41
--- /dev/null
+++ b/train/mermaid/hard/mermaid_424.mmd
@@ -0,0 +1,124 @@
+graph RL
+    N0([start])
+    N1{Stereolithography}
+    N2[Troubleshooting Print Errors]
+    N3[Mass Customization]
+    N4[Fused Deposition Modeling]
+    N5{Selective Laser Sintering}
+    N6(Reverse Engineering with 3D Printing)
+    N7[Custom Part Production]
+    N8(Material Research and Development)
+    N9[[Printing Parameter Optimization]]
+    N10[[Aerospace Part Production]]
+    N11[(Scaffolding for Tissue Engineering)]
+    N12{Additive Manufacturing}
+    N13{Educational Applications}
+    N14[[File Format Conversion]]
+    N15([Printer Setup])
+    N16[Post_Processing]
+    N17[Digital Twin for 3D Prints]
+    N18(Sustainable 3D Printing Materials)
+    N19([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Medical Device Prototyping
+        nest0_0[(3D Printed Tooling)]
+        nest0_1[/Slicing Software Operation/]
+        nest0_2[Food Printing]
+        nest0_3[[Print Farm Management]]
+    end
+    subgraph Support Structure Design
+        nest1_0[/Printing Process/]
+        nest1_1(On_Demand Production)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 --> N18
+    N18 --> N19
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N10 --> nest0_0
+    nest0_3 --> N1
+    nest1_0 --> nest1_1
+    N13 --> nest1_0
+    nest1_1 --> N1
+    N8 --> S0
+    S0 -.-> N14
+    S0 -.-> N17
+    S0 -.-> N19
+    S0 -.-> N12
+    N14 --> S1
+    S1 -.-> N16
+    S1 -.-> N17
+    S1 -.-> N19
+    N4 -.-> M0
+    N0 -.-> M0
+    M0 -.-> N6
+    N1 --> M1
+    N3 -.-> M1
+    M1 --> N10
+    style S0 fill:#FFEBEE,stroke:#E57373
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#FFEBEE,stroke:#E57373
+    style M1 fill:#F3E5F5,stroke:#AB47BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_425.txt b/train/mermaid/hard/mermaid_425.txt
new file mode 100644
index 0000000000000000000000000000000000000000..23484d664f9dfe0393c685a2c90745df9cd971b3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_425.txt
@@ -0,0 +1,41 @@
+<Advanced Materials Research, connectedTo, Surface Functionalization>
+<Biosensors, connectedTo, X_ray Diffraction>
+<Computational Nanotechnology, connectedTo, Graphene Production>
+<Computational Nanotechnology, partOf, Drug Delivery Systems>
+<Food Packaging Improvement, connectedTo, Computational Nanotechnology>
+<Food Packaging Improvement, partOf, Drug Delivery Systems>
+<Graphene Production, connectedTo, Water Purification using Nanomaterials>
+<Graphene Production, simulates, Advanced Materials Research>
+<Molecular Self_Assembly, connectedTo, Quantum Computing Integration>
+<Molecular Self_Assembly, partOf, Nanomedicine Development>
+<Nanocoatings, connectedTo, Molecular Self_Assembly>
+<Nanocoatings, connectedTo, Nanomaterial Synthesis>
+<Nanocoatings, connectedTo, Nanoscale Imaging>
+<Nanocoatings, manipulates, Nanosensors>
+<Nanoelectronics, connectedTo, Nanocoatings>
+<Nanoelectronics, partOf, Nanomedicine Development>
+<Nanomaterial Synthesis, connectedTo, Advanced Materials Research>
+<Nanomaterial Synthesis, connectedTo, Graphene Production>
+<Nanomaterial Synthesis, connectedTo, Nanoscale Imaging>
+<Nanomaterial Synthesis, connectedTo, Nanosensors>
+<Nanoscale Imaging, connectedTo, Advanced Materials Research>
+<Nanoscale Imaging, connectedTo, Graphene Production>
+<Nanoscale Imaging, connectedTo, Nanosensors>
+<Nanosensors, connectedTo, Graphene Production>
+<Photovoltaics, connectedTo, Graphene Production>
+<Photovoltaics, connectedTo, Nanoscale Imaging>
+<Photovoltaics, connectedTo, Nanosensors>
+<Photovoltaics, connectedTo, Scanning Electron Microscopy>
+<Photovoltaics, connectedTo, Surface Functionalization>
+<Quantum Computing Integration, connectedTo, Nanoelectronics>
+<Quantum Computing Integration, partOf, Nanomedicine Development>
+<Risk Assessment of Nanomaterials, connectedTo, Food Packaging Improvement>
+<Risk Assessment of Nanomaterials, partOf, Drug Delivery Systems>
+<Scanning Electron Microscopy, connectedTo, Graphene Production>
+<Scanning Electron Microscopy, connectedTo, Nanocoatings>
+<Scanning Electron Microscopy, connectedTo, Nanoscale Imaging>
+<Surface Functionalization, connectedTo, Biosensors>
+<Water Purification using Nanomaterials, connectedTo, Risk Assessment of Nanomaterials>
+<Water Purification using Nanomaterials, partOf, Drug Delivery Systems>
+<start, connectedTo, Nanoscale Imaging>
+<start, connectedTo, Photovoltaics>
diff --git a/train/mermaid/hard/mermaid_429.mmd b/train/mermaid/hard/mermaid_429.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5b0414664ec4b2dce76cb11322f4f40088cd55aa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_429.mmd
@@ -0,0 +1,126 @@
+graph RL
+    N0([Nanoscale Imaging])
+    N1[[Advanced Materials Research]]
+    N2([Atomic Force Microscopy])
+    N3[Nanomaterial Synthesis]
+    N4[Quantum Dots]
+    N5(Bio_Nanotechnology Interface)
+    N6[[Catalysis at Nanoscale]]
+    N7[[Drug Delivery Systems]]
+    N8[/Environmental Remediation with Nanomaterials/]
+    N9(Regulatory Framework for Nanotech)
+    N10(Nanodevice Fabrication)
+    N11(Public Perception of Nanotechnology)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Photovoltaics
+        nest0_0([Quantum Computing Integration])
+        nest0_1(X_ray Diffraction)
+    end
+    subgraph Spintronics
+        nest1_0([Nanocomposites])
+        nest1_1[/Spectroscopy/]
+    end
+    N0 -.-> |innovates| N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> |produces| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 -.-> nest0_1
+    N1 -.-> nest0_0
+    nest0_1 -.-> N2
+    nest1_0 -.-> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 -.-> N2
+    N4 -.-> S0
+    S0 --> N10
+    S0 -.-> N11
+    S0 -.-> N8
+    N2 --> S1
+    S1 --> N8
+    S1 --> N5
+    S1 -.-> N4
+    N0 --> S2
+    S2 -.-> N2
+    S2 -.-> N5
+    S2 --> N3
+    N6 -.-> M0
+    N4 -.-> M0
+    M0 --> N11
+    N7 -.-> |researches| M1
+    N8 --> M1
+    M1 --> N10
+    N1 --> M2
+    N0 -.-> M2
+    M2 --> N4
+    style N0 fill:#E8EAF6,stroke:#7986CB
+    style N1 fill:#FFE88D,stroke:#FFDA4E
+    style N2 fill:#E1F5FE,stroke:#4FC3F7
+    style N3 fill:#E8EAF6,stroke:#7986CB
+    style N4 fill:#E1F5FE,stroke:#4FC3F7
+    style N5 fill:#E1F5FE,stroke:#4FC3F7
+    style N6 fill:#FFE88D,stroke:#FFDA4E
+    style N7 fill:#FFE88D,stroke:#FFDA4E
+    style N8 fill:#E8EAF6,stroke:#7986CB
+    style N9 fill:#E8EAF6,stroke:#7986CB
+    style N10 fill:#FFE88D,stroke:#FFDA4E
+    style N11 fill:#FFE88D,stroke:#FFDA4E
+    style S0 fill:#E1F5FE,stroke:#4FC3F7
+    style S1 fill:#E8EAF6,stroke:#7986CB
+    style S2 fill:#E8EAF6,stroke:#7986CB
+    style M0 fill:#FFE88D,stroke:#FFDA4E
+    style M1 fill:#FFE88D,stroke:#FFDA4E
+    style M2 fill:#FFE88D,stroke:#FFDA4E
+    style nest0_0 fill:#E1F5FE,stroke:#4FC3F7
+    style nest0_1 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_0 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_1 fill:#FFE88D,stroke:#FFDA4E
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFDA4E,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_429.txt b/train/mermaid/hard/mermaid_429.txt
new file mode 100644
index 0000000000000000000000000000000000000000..685417d9dfe72e6568da49c97789ec498e94f77e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_429.txt
@@ -0,0 +1,35 @@
+<Advanced Materials Research, connectedTo, Atomic Force Microscopy>
+<Advanced Materials Research, connectedTo, Quantum Computing Integration>
+<Advanced Materials Research, connectedTo, Quantum Dots>
+<Atomic Force Microscopy, connectedTo, Bio_Nanotechnology Interface>
+<Atomic Force Microscopy, connectedTo, Environmental Remediation with Nanomaterials>
+<Atomic Force Microscopy, connectedTo, Nanocomposites>
+<Atomic Force Microscopy, connectedTo, Nanomaterial Synthesis>
+<Atomic Force Microscopy, connectedTo, Quantum Dots>
+<Bio_Nanotechnology Interface, connectedTo, Catalysis at Nanoscale>
+<Catalysis at Nanoscale, connectedTo, Drug Delivery Systems>
+<Catalysis at Nanoscale, connectedTo, Public Perception of Nanotechnology>
+<Drug Delivery Systems, connectedTo, Environmental Remediation with Nanomaterials>
+<Drug Delivery Systems, researches, Nanodevice Fabrication>
+<Environmental Remediation with Nanomaterials, connectedTo, Nanodevice Fabrication>
+<Environmental Remediation with Nanomaterials, connectedTo, Regulatory Framework for Nanotech>
+<Nanocomposites, connectedTo, Spectroscopy>
+<Nanocomposites, partOf, Spintronics>
+<Nanodevice Fabrication, connectedTo, Public Perception of Nanotechnology>
+<Nanomaterial Synthesis, produces, Quantum Dots>
+<Nanoscale Imaging, connectedTo, Atomic Force Microscopy>
+<Nanoscale Imaging, connectedTo, Bio_Nanotechnology Interface>
+<Nanoscale Imaging, connectedTo, Nanomaterial Synthesis>
+<Nanoscale Imaging, connectedTo, Quantum Dots>
+<Nanoscale Imaging, innovates, Advanced Materials Research>
+<Quantum Computing Integration, connectedTo, X_ray Diffraction>
+<Quantum Computing Integration, partOf, Photovoltaics>
+<Quantum Dots, connectedTo, Bio_Nanotechnology Interface>
+<Quantum Dots, connectedTo, Environmental Remediation with Nanomaterials>
+<Quantum Dots, connectedTo, Nanodevice Fabrication>
+<Quantum Dots, connectedTo, Public Perception of Nanotechnology>
+<Regulatory Framework for Nanotech, connectedTo, Nanodevice Fabrication>
+<Spectroscopy, connectedTo, Atomic Force Microscopy>
+<Spectroscopy, partOf, Spintronics>
+<X_ray Diffraction, connectedTo, Atomic Force Microscopy>
+<X_ray Diffraction, partOf, Photovoltaics>
diff --git a/train/mermaid/hard/mermaid_43.mmd b/train/mermaid/hard/mermaid_43.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..164e0b38e24893b64c7c4cff68ba962516236940
--- /dev/null
+++ b/train/mermaid/hard/mermaid_43.mmd
@@ -0,0 +1,146 @@
+graph LR
+    N0([Bridge Inspection])
+    N1(Bus Stop Management)
+    N2(Ticket Purchase)
+    N3[[Maintenance Check]]
+    N4(Luggage Handling)
+    N5(Fare Calculation)
+    N6(Security Check)
+    N7[(Tunnel Monitoring)]
+    N8[/Air Traffic Control/]
+    N9[Emergency Landing]
+    N10[(Electric Vehicle Charging)]
+    N11[Load Balancing]
+    N12(Navigation Update)
+    N13[(Public Transport Ticketing)]
+    N14(Driver Allocation)
+    N15[[Customs Clearance]]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Intermodal Transfer
+        nest0_0[/Arrival/]
+        nest0_1(Ride_sharing Request)
+        nest0_2[Road Network Management]
+        nest0_3(Vehicle Tracking)
+    end
+    subgraph Delay Alert
+        nest1_0[(Weather Impact Assessment)]
+        nest1_1(Traffic Monitoring)
+        nest1_2[[Passenger Boarding Pass Issuance]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> |clears| N6
+    N6 -.-> N7
+    N7 --> |reports| N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> |diversifies| nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N14 -.-> nest0_0
+    nest0_3 -.-> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N14 -.-> |inspects| nest1_0
+    nest1_2 --> N12
+    N8 --> S0
+    S0 --> |alerts| N16
+    S0 --> N15
+    N9 -.-> S1
+    S1 --> N12
+    S1 --> N11
+    N4 --> S2
+    S2 --> N16
+    S2 --> N14
+    S2 --> |permits| N15
+    N3 -.-> M0
+    N1 --> M0
+    M0 --> N5
+    N0 -.-> |optimizes| M1
+    N1 --> M1
+    M1 -.-> N3
+    style N0 fill:#FFFDE0,stroke:#FFF8A6
+    style N1 fill:#FFF9D4,stroke:#FFE69C
+    style N2 fill:#FFFDE0,stroke:#FFF8A6
+    style N3 fill:#FFFAE0,stroke:#FFE470
+    style N4 fill:#FFFDE0,stroke:#FFF8A6
+    style N5 fill:#FFFAE0,stroke:#FFE470
+    style N6 fill:#FFFAE0,stroke:#FFE470
+    style N7 fill:#FFF9D4,stroke:#FFE69C
+    style N8 fill:#FFFDE0,stroke:#FFF8A6
+    style N9 fill:#FFFAE0,stroke:#FFE470
+    style N10 fill:#FFFDE0,stroke:#FFF8A6
+    style N11 fill:#FFFAE0,stroke:#FFE470
+    style N12 fill:#FFF9D4,stroke:#FFE69C
+    style N13 fill:#FFFAE0,stroke:#FFE470
+    style N14 fill:#FFFDE0,stroke:#FFF8A6
+    style N15 fill:#FFFAE0,stroke:#FFE470
+    style N16 fill:#FFF9D4,stroke:#FFE69C
+    style S0 fill:#FFFAE0,stroke:#FFE470
+    style S1 fill:#FFFDE0,stroke:#FFF8A6
+    style S2 fill:#FFFAE0,stroke:#FFE470
+    style M0 fill:#FFFAE0,stroke:#FFE470
+    style M1 fill:#FFFAE0,stroke:#FFE470
+    style nest0_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_1 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_2 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_3 fill:#FFF9D4,stroke:#FFE69C
+    style nest1_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_1 fill:#FFFAE0,stroke:#FFE470
+    style nest1_2 fill:#FFFDE0,stroke:#FFF8A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_432.mmd b/train/mermaid/hard/mermaid_432.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a161664c820132c617226cfcb7af52c9e5150416
--- /dev/null
+++ b/train/mermaid/hard/mermaid_432.mmd
@@ -0,0 +1,122 @@
+graph BT
+    N0([Nanomedicine Development])
+    N1(Quantum Computing Integration)
+    N2([Regulatory Framework for Nanotech])
+    N3(Biosensors)
+    N4(Nanocomposites)
+    N5[(Bio_Nanotechnology Interface)]
+    N6(Carbon Nanotube Synthesis)
+    N7[Transmission Electron Microscopy]
+    N8[/Public Perception of Nanotechnology/]
+    N9[Spintronics]
+    N10(Food Packaging Improvement)
+    N11[Graphene Production]
+    N12[(Nanocoatings)]
+    N13[/Advanced Materials Research/]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Nanofabrication Techniques
+        nest0_0[[Risk Assessment of Nanomaterials]]
+        nest0_1([Spectroscopy])
+    end
+    subgraph Energy Storage Applications
+        nest1_0(Atomic Force Microscopy)
+        nest1_1[/Molecular Self_Assembly/]
+        nest1_2[Lab_on_a_Chip Devices]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |modifies| N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 -.-> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N3 -.-> nest1_0
+    nest1_2 --> N12
+    N7 -.-> S0
+    S0 -.-> N14
+    S0 -.-> |optimizes| N9
+    N2 -.-> S1
+    S1 -.-> N9
+    S1 --> N14
+    N0 --> M0
+    N6 --> M0
+    M0 --> N14
+    N1 --> M1
+    N0 -.-> M1
+    N5 --> M1
+    M1 -.-> N8
+    style N0 fill:#FFCCBC,stroke:#FF5722
+    style N1 fill:#FFCCBC,stroke:#FF5722
+    style N2 fill:#FFF3E0,stroke:#FFA726
+    style N3 fill:#FFCCBC,stroke:#FF5722
+    style N4 fill:#FFCCBC,stroke:#FF5722
+    style N5 fill:#FFF3E0,stroke:#FFA726
+    style N6 fill:#FFEBEB,stroke:#FFC2C2
+    style N7 fill:#FFCCBC,stroke:#FF5722
+    style N8 fill:#FFCCBC,stroke:#FF5722
+    style N9 fill:#FFF3E0,stroke:#FFA726
+    style N10 fill:#FFCCBC,stroke:#FF5722
+    style N11 fill:#FFEBEB,stroke:#FFC2C2
+    style N12 fill:#FFF3E0,stroke:#FFA726
+    style N13 fill:#FFF3E0,stroke:#FFA726
+    style N14 fill:#FFEBEB,stroke:#FFC2C2
+    style S0 fill:#FFEBEB,stroke:#FFC2C2
+    style S1 fill:#FFCCBC,stroke:#FF5722
+    style M0 fill:#FFCCBC,stroke:#FF5722
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style nest0_0 fill:#FFF3E0,stroke:#FFA726
+    style nest0_1 fill:#FFCCBC,stroke:#FF5722
+    style nest1_0 fill:#FFCCBC,stroke:#FF5722
+    style nest1_1 fill:#FFF3E0,stroke:#FFA726
+    style nest1_2 fill:#FFCCBC,stroke:#FF5722
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_433.txt b/train/mermaid/hard/mermaid_433.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7ee7d4e0c620592ef2ccbc293f8eb9018c663210
--- /dev/null
+++ b/train/mermaid/hard/mermaid_433.txt
@@ -0,0 +1,37 @@
+<Cryogenic Systems for Qubits, connectedTo, Quantum Processor Fabrication>
+<Quantum Algorithm Development, connectedTo, Quantum Bit Design>
+<Quantum Algorithm Development, partOf, Quantum Network Development>
+<Quantum Annealing, connectedTo, Quantum Algorithm Development>
+<Quantum Annealing, partOf, Quantum Network Development>
+<Quantum Bit Design, connectedTo, Quantum Communication Protocols>
+<Quantum Bit Design, partOf, Quantum Network Development>
+<Quantum Circuit Design, connectedTo, Quantum Error Correction>
+<Quantum Circuit Design, connectedTo, Quantum Hardware Control>
+<Quantum Cloud Computing Services, connectedTo, Quantum Sensing>
+<Quantum Communication Protocols, connectedTo, Quantum Cryptography>
+<Quantum Communication Protocols, connectedTo, Quantum Processor Fabrication>
+<Quantum Computing in Drug Discovery, connectedTo, Cryogenic Systems for Qubits>
+<Quantum Computing in Drug Discovery, connectedTo, Quantum Circuit Design>
+<Quantum Computing in Drug Discovery, connectedTo, Quantum Computing Education>
+<Quantum Computing in Drug Discovery, connectedTo, Quantum Error Correction>
+<Quantum Computing in Drug Discovery, connectedTo, Quantum Sensing>
+<Quantum Cryptography, connectedTo, Cryogenic Systems for Qubits>
+<Quantum Cryptography, connectedTo, Quantum Sensing>
+<Quantum Cryptography, innovates, Quantum Processor Fabrication>
+<Quantum Entanglement Generation, connectedTo, Superconducting Qubits>
+<Quantum Entanglement Generation, partOf, Decoherence Mitigation>
+<Quantum Error Correction, connectedTo, Quantum Cloud Computing Services>
+<Quantum Error Correction, connectedTo, Quantum Entanglement Generation>
+<Quantum Hardware Control, connectedTo, Quantum Programming Languages>
+<Quantum Machine Learning, connectedTo, Quantum Computing in Drug Discovery>
+<Quantum Machine Learning, connectedTo, Quantum Error Correction>
+<Quantum Processor Fabrication, connectedTo, Quantum Error Correction>
+<Quantum Processor Fabrication, connectedTo, Quantum Sensing>
+<Quantum Programming Languages, connectedTo, Quantum Communication Protocols>
+<Quantum Programming Languages, connectedTo, Quantum Processor Fabrication>
+<Quantum Programming Languages, connectedTo, Quantum Software Development Kit>
+<Quantum Sensing, connectedTo, Quantum Computing Education>
+<Quantum Software Development Kit, connectedTo, Quantum Annealing>
+<Quantum Software Development Kit, partOf, Quantum Network Development>
+<Superconducting Qubits, connectedTo, Quantum Cryptography>
+<Superconducting Qubits, partOf, Decoherence Mitigation>
diff --git a/train/mermaid/hard/mermaid_434.txt b/train/mermaid/hard/mermaid_434.txt
new file mode 100644
index 0000000000000000000000000000000000000000..48127413377fe6df1901faef7435f6ab5a0fe44c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_434.txt
@@ -0,0 +1,37 @@
+<Cryogenic Systems for Qubits, connectedTo, Quantum Annealing>
+<Cryogenic Systems for Qubits, connectedTo, Quantum Computing in Drug Discovery>
+<Financial Modeling with Quantum Computing, connectedTo, Quantum Sensing>
+<Financial Modeling with Quantum Computing, partOf, Quantum Supremacy Claims>
+<Interfacing Classical and Quantum Computers, connectedTo, Financial Modeling with Quantum Computing>
+<Interfacing Classical and Quantum Computers, partOf, Quantum Supremacy Claims>
+<Material Science Simulations, connectedTo, end>
+<Microwave Control for Qubits, connectedTo, Quantum Network Development>
+<Microwave Control for Qubits, partOf, Topological Qubits>
+<Photonic Qubits, connectedTo, Cryogenic Systems for Qubits>
+<Photonic Qubits, connectedTo, Quantum Computing in Drug Discovery>
+<Quantum Algorithm Development, yes, Quantum Cryptography>
+<Quantum Annealing, connectedTo, Quantum Computing in Drug Discovery>
+<Quantum Circuit Design, connectedTo, Quantum Computing in Drug Discovery>
+<Quantum Circuit Design, connectedTo, Quantum Cryptography>
+<Quantum Circuit Design, connectedTo, Quantum Key Distribution>
+<Quantum Computing Education, connectedTo, Interfacing Classical and Quantum Computers>
+<Quantum Computing Education, partOf, Quantum Supremacy Claims>
+<Quantum Computing in Drug Discovery, connectedTo, Quantum Algorithm Development>
+<Quantum Cryptography, connectedTo, Trapped Ion Qubits>
+<Quantum Entanglement Generation, connectedTo, Material Science Simulations>
+<Quantum Entanglement Generation, connectedTo, Microwave Control for Qubits>
+<Quantum Error Correction, connectedTo, Photonic Qubits>
+<Quantum Error Correction, connectedTo, Quantum Annealing>
+<Quantum Error Correction, connectedTo, Quantum Entanglement Generation>
+<Quantum Error Correction, no, Quantum Computing in Drug Discovery>
+<Quantum Key Distribution, no, Quantum Error Correction>
+<Quantum Network Development, connectedTo, Vacuum Systems for Trapped Ions>
+<Quantum Network Development, partOf, Topological Qubits>
+<Quantum Sensing, connectedTo, Material Science Simulations>
+<Quantum Sensing, connectedTo, Quantum Circuit Design>
+<Quantum Sensing, connectedTo, Quantum Cryptography>
+<Trapped Ion Qubits, connectedTo, Quantum Entanglement Generation>
+<Vacuum Systems for Trapped Ions, connectedTo, Quantum Computing Education>
+<Vacuum Systems for Trapped Ions, connectedTo, Quantum Sensing>
+<start, connectedTo, Quantum Computing in Drug Discovery>
+<start, connectedTo, Vacuum Systems for Trapped Ions>
diff --git a/train/mermaid/hard/mermaid_436.mmd b/train/mermaid/hard/mermaid_436.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..03ced83d7b6eaf2b90863d6feb5b5dd5d170f9a9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_436.mmd
@@ -0,0 +1,123 @@
+graph BT
+    N0([start])
+    N1[Quantum Sensing]
+    N2[Quantum Computing Benchmarking]
+    N3(Quantum Communication Protocols)
+    N4[Quantum Computing in Drug Discovery]
+    N5[Quantum Supremacy Claims]
+    N6([Decoherence Mitigation])
+    N7[[Cryogenic Systems for Qubits]]
+    N8(Quantum Computing for AI)
+    N9(Quantum Entanglement Generation)
+    N10([Quantum Cloud Computing Services])
+    N11[Financial Modeling with Quantum Computing]
+    N12[Quantum Teleportation Research]
+    N13[Quantum Bit Design]
+    N14([Optimization Problems with Quantum Annealing])
+    N15(Quantum Key Distribution)
+    N16([end])
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Quantum Software Development Kit
+        nest0_0(Superconducting Qubits)
+        nest0_1([Quantum Network Development])
+        nest0_2[(Quantum Error Correction)]
+        nest0_3[[Post_Quantum Cryptography]]
+    end
+    subgraph Quantum Algorithm Development
+        nest1_0[(Quantum Hardware Control)]
+        nest1_1[Quantum Cryptography]
+    end
+    N0 --> N1
+    N1 -.-> |yes| N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> |no| N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> |yes| N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N7 -.-> nest0_0
+    nest0_3 -.-> N1
+    nest1_0 -.-> nest1_1
+    N7 -.-> nest1_0
+    nest1_1 --> N16
+    N4 -.-> S1
+    S1 --> N16
+    S1 -.-> N10
+    N0 -.-> S2
+    S2 --> N11
+    S2 -.-> N10
+    S2 --> N7
+    S2 -.-> N12
+    N5 -.-> M0
+    N1 --> M0
+    M0 --> N13
+    N1 --> M1
+    N3 --> M1
+    N4 --> M1
+    M1 --> N7
+    N2 -.-> M2
+    N0 -.-> M2
+    M2 -.-> N6
+    style S1 fill:#F9FBE7,stroke:#C0CA33
+    style S2 fill:#F9FBE7,stroke:#C0CA33
+    style M0 fill:#E8F0FF,stroke:#A2D0FF
+    style M1 fill:#FFEBEE,stroke:#E57373
+    style M2 fill:#E8F0FF,stroke:#A2D0FF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#C0CA33,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_437.mmd b/train/mermaid/hard/mermaid_437.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b5a31c7d96089a6746538faf73744ac8ec4fb15d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_437.mmd
@@ -0,0 +1,138 @@
+graph LR
+    N0([Photonic Qubits])
+    N1{Quantum Computing Education}
+    N2(Quantum Computing in Drug Discovery)
+    N3(Quantum Simulation)
+    N4{Interfacing Classical and Quantum Computers}
+    N5([Quantum Coherence Management])
+    N6[[Quantum Programming Languages]]
+    N7[Quantum Error Correction]
+    N8[Quantum Circuit Design]
+    N9[(Quantum Supremacy Claims)]
+    N10{Quantum Annealing}
+    N11{Quantum Key Distribution}
+    N12[Quantum Bit Design]
+    N13[/Optimization Problems with Quantum Annealing/]
+    N14[/Quantum Processor Fabrication/]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Superconducting Qubits
+        nest0_0{Financial Modeling with Quantum Computing}
+        nest0_1(Quantum Computing for AI)
+    end
+    subgraph Quantum Computing Benchmarking
+        nest1_0(Laser Cooling for Ions)
+        nest1_1(Topological Qubits)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> |downloads| N6
+    N6 -.-> |programs| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> |verifies| N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> N15
+    nest0_0 --> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 -.-> N5
+    nest1_0 --> nest1_1
+    N11 --> nest1_0
+    nest1_1 -.-> |analyzes| N12
+    N11 --> S0
+    S0 --> N14
+    S0 --> N15
+    S0 --> N13
+    N6 -.-> S1
+    S1 -.-> N15
+    S1 --> N10
+    S1 -.-> N14
+    N5 --> S2
+    S2 --> N10
+    S2 --> N7
+    S2 -.-> N8
+    N0 --> M1
+    N1 -.-> M1
+    N3 -.-> M1
+    M1 --> N8
+    N8 --> |tests| M2
+    N7 --> |controls| M2
+    N3 -.-> M2
+    M2 --> N12
+    style N0 fill:#FFDAB9,stroke:#FFC085
+    style N1 fill:#B3E5FC,stroke:#03A9F4
+    style N2 fill:#EFEBE9,stroke:#A1887F
+    style N3 fill:#FFDAB9,stroke:#FFC085
+    style N4 fill:#FFDAB9,stroke:#FFC085
+    style N5 fill:#EFEBE9,stroke:#A1887F
+    style N6 fill:#FFDAB9,stroke:#FFC085
+    style N7 fill:#FFDAB9,stroke:#FFC085
+    style N8 fill:#FFDAB9,stroke:#FFC085
+    style N9 fill:#B3E5FC,stroke:#03A9F4
+    style N10 fill:#FFDAB9,stroke:#FFC085
+    style N11 fill:#EFEBE9,stroke:#A1887F
+    style N12 fill:#B3E5FC,stroke:#03A9F4
+    style N13 fill:#B3E5FC,stroke:#03A9F4
+    style N14 fill:#B3E5FC,stroke:#03A9F4
+    style N15 fill:#B3E5FC,stroke:#03A9F4
+    style S0 fill:#EFEBE9,stroke:#A1887F
+    style S1 fill:#FFDAB9,stroke:#FFC085
+    style S2 fill:#FFDAB9,stroke:#FFC085
+    style M1 fill:#B3E5FC,stroke:#03A9F4
+    style M2 fill:#EFEBE9,stroke:#A1887F
+    style nest0_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#EFEBE9,stroke:#A1887F
+    style nest1_1 fill:#B3E5FC,stroke:#03A9F4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#03A9F4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_437.txt b/train/mermaid/hard/mermaid_437.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f93ee7f05ace03a408ec37412c3b1951591b6ad2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_437.txt
@@ -0,0 +1,40 @@
+<Financial Modeling with Quantum Computing, connectedTo, Quantum Computing for AI>
+<Financial Modeling with Quantum Computing, partOf, Superconducting Qubits>
+<Interfacing Classical and Quantum Computers, connectedTo, Quantum Coherence Management>
+<Laser Cooling for Ions, connectedTo, Topological Qubits>
+<Laser Cooling for Ions, partOf, Quantum Computing Benchmarking>
+<Optimization Problems with Quantum Annealing, connectedTo, Quantum Processor Fabrication>
+<Photonic Qubits, connectedTo, Quantum Circuit Design>
+<Photonic Qubits, connectedTo, Quantum Computing Education>
+<Quantum Annealing, verifies, Quantum Key Distribution>
+<Quantum Bit Design, connectedTo, Optimization Problems with Quantum Annealing>
+<Quantum Circuit Design, connectedTo, Quantum Supremacy Claims>
+<Quantum Circuit Design, tests, Quantum Bit Design>
+<Quantum Coherence Management, connectedTo, Quantum Annealing>
+<Quantum Coherence Management, connectedTo, Quantum Circuit Design>
+<Quantum Coherence Management, connectedTo, Quantum Error Correction>
+<Quantum Coherence Management, downloads, Quantum Programming Languages>
+<Quantum Computing Education, connectedTo, Quantum Circuit Design>
+<Quantum Computing Education, connectedTo, Quantum Computing in Drug Discovery>
+<Quantum Computing for AI, connectedTo, Quantum Coherence Management>
+<Quantum Computing for AI, partOf, Superconducting Qubits>
+<Quantum Computing in Drug Discovery, connectedTo, Quantum Simulation>
+<Quantum Error Correction, connectedTo, Quantum Circuit Design>
+<Quantum Error Correction, controls, Quantum Bit Design>
+<Quantum Key Distribution, connectedTo, Laser Cooling for Ions>
+<Quantum Key Distribution, connectedTo, Optimization Problems with Quantum Annealing>
+<Quantum Key Distribution, connectedTo, Quantum Bit Design>
+<Quantum Key Distribution, connectedTo, Quantum Processor Fabrication>
+<Quantum Key Distribution, connectedTo, end>
+<Quantum Processor Fabrication, connectedTo, end>
+<Quantum Programming Languages, connectedTo, Quantum Annealing>
+<Quantum Programming Languages, connectedTo, Quantum Processor Fabrication>
+<Quantum Programming Languages, connectedTo, end>
+<Quantum Programming Languages, programs, Quantum Error Correction>
+<Quantum Simulation, connectedTo, Financial Modeling with Quantum Computing>
+<Quantum Simulation, connectedTo, Interfacing Classical and Quantum Computers>
+<Quantum Simulation, connectedTo, Quantum Bit Design>
+<Quantum Simulation, connectedTo, Quantum Circuit Design>
+<Quantum Supremacy Claims, connectedTo, Quantum Annealing>
+<Topological Qubits, analyzes, Quantum Bit Design>
+<Topological Qubits, partOf, Quantum Computing Benchmarking>
diff --git a/train/mermaid/hard/mermaid_438.txt b/train/mermaid/hard/mermaid_438.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b07117d4cbcb25c9a488f42af5ca48fbac1c0c16
--- /dev/null
+++ b/train/mermaid/hard/mermaid_438.txt
@@ -0,0 +1,30 @@
+<Optimization Problems with Quantum Annealing, connectedTo, Quantum Programming Languages>
+<Post_Quantum Cryptography, connectedTo, Quantum Computing for AI>
+<Post_Quantum Cryptography, connectedTo, Quantum Software Development Kit>
+<Quantum Advantage Demonstration, connectedTo, Quantum Entanglement Generation>
+<Quantum Advantage Demonstration, partOf, Laser Cooling for Ions>
+<Quantum Algorithm Development, connectedTo, Quantum Computing Education>
+<Quantum Algorithm Development, partOf, Quantum Communication Protocols>
+<Quantum Bit Design, connectedTo, Vacuum Systems for Trapped Ions>
+<Quantum Coherence Management, connectedTo, Quantum Advantage Demonstration>
+<Quantum Coherence Management, partOf, Laser Cooling for Ions>
+<Quantum Computing Education, connectedTo, Quantum Bit Design>
+<Quantum Computing Education, partOf, Quantum Communication Protocols>
+<Quantum Computing for AI, connectedTo, Quantum Hardware Control>
+<Quantum Computing in Drug Discovery, connectedTo, Optimization Problems with Quantum Annealing>
+<Quantum Entanglement Generation, connectedTo, Quantum Sensing>
+<Quantum Entanglement Generation, partOf, Laser Cooling for Ions>
+<Quantum Hardware Control, applies, Quantum Programming Languages>
+<Quantum Hardware Control, connectedTo, Optimization Problems with Quantum Annealing>
+<Quantum Hardware Control, connectedTo, Quantum Algorithm Development>
+<Quantum Hardware Control, connectedTo, Quantum Computing in Drug Discovery>
+<Quantum Hardware Control, connectedTo, Quantum Software Development Kit>
+<Quantum Network Development, connectedTo, Quantum Computing for AI>
+<Quantum Sensing, partOf, Laser Cooling for Ions>
+<Quantum Sensing, programs, Quantum Hardware Control>
+<Quantum Software Development Kit, connectedTo, Quantum Bit Design>
+<Quantum Software Development Kit, connectedTo, Quantum Coherence Management>
+<Quantum Software Development Kit, connectedTo, Quantum Computing for AI>
+<Vacuum Systems for Trapped Ions, connectedTo, Quantum Network Development>
+<Vacuum Systems for Trapped Ions, solves, Quantum Algorithm Development>
+<Vacuum Systems for Trapped Ions, validates, Quantum Computing for AI>
diff --git a/train/mermaid/hard/mermaid_439.txt b/train/mermaid/hard/mermaid_439.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1e0486d55d323762261a1eae921503eab35c4ae5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_439.txt
@@ -0,0 +1,49 @@
+<Cryogenic Systems for Qubits, connectedTo, Quantum Error Correction>
+<Cryogenic Systems for Qubits, partOf, Topological Qubits>
+<Laser Cooling for Ions, connectedTo, Quantum Teleportation Research>
+<Laser Cooling for Ions, partOf, Quantum Bit Design>
+<Material Science Simulations, connectedTo, Quantum Computing Benchmarking>
+<Microwave Control for Qubits, connectedTo, Material Science Simulations>
+<Microwave Control for Qubits, connectedTo, Quantum Error Correction>
+<Microwave Control for Qubits, validates, Quantum Software Development Kit>
+<Photonic Qubits, connectedTo, Vacuum Systems for Trapped Ions>
+<Photonic Qubits, partOf, Quantum Bit Design>
+<Post_Quantum Cryptography, connectedTo, Microwave Control for Qubits>
+<Post_Quantum Cryptography, connectedTo, Quantum Error Correction>
+<Post_Quantum Cryptography, shares, end>
+<Quantum Algorithm Development, connectedTo, Quantum Computing Benchmarking>
+<Quantum Algorithm Development, connectedTo, Quantum Sensing>
+<Quantum Coherence Management, connectedTo, Material Science Simulations>
+<Quantum Coherence Management, connectedTo, Quantum Computing Benchmarking>
+<Quantum Communication Protocols, builds, Quantum Software Development Kit>
+<Quantum Communication Protocols, connectedTo, Quantum Algorithm Development>
+<Quantum Computing Benchmarking, connectedTo, Quantum Cryptography>
+<Quantum Computing Benchmarking, connectedTo, Quantum Hardware Control>
+<Quantum Computing Benchmarking, connectedTo, Quantum Key Distribution>
+<Quantum Computing Benchmarking, connectedTo, end>
+<Quantum Computing Benchmarking, corrects, Quantum Computing for AI>
+<Quantum Computing Education, connectedTo, Quantum Software Development Kit>
+<Quantum Computing Education, connectedTo, Quantum Supremacy Claims>
+<Quantum Computing for AI, connectedTo, Quantum Key Distribution>
+<Quantum Computing for AI, connectedTo, Quantum Processor Fabrication>
+<Quantum Cryptography, connectedTo, Quantum Computing for AI>
+<Quantum Error Correction, connectedTo, Material Science Simulations>
+<Quantum Error Correction, connectedTo, Quantum Computing Education>
+<Quantum Error Correction, connectedTo, Quantum Software Development Kit>
+<Quantum Hardware Control, connectedTo, end>
+<Quantum Key Distribution, connectedTo, Quantum Hardware Control>
+<Quantum Machine Learning, connectedTo, Cryogenic Systems for Qubits>
+<Quantum Machine Learning, partOf, Topological Qubits>
+<Quantum Processor Fabrication, connectedTo, Quantum Machine Learning>
+<Quantum Processor Fabrication, partOf, Topological Qubits>
+<Quantum Sensing, connectedTo, Material Science Simulations>
+<Quantum Sensing, connectedTo, Post_Quantum Cryptography>
+<Quantum Sensing, connectedTo, Quantum Computing Benchmarking>
+<Quantum Software Development Kit, connectedTo, Superconducting Qubits>
+<Quantum Supremacy Claims, connectedTo, Photonic Qubits>
+<Quantum Supremacy Claims, connectedTo, Quantum Software Development Kit>
+<Quantum Teleportation Research, connectedTo, Quantum Coherence Management>
+<Quantum Teleportation Research, partOf, Quantum Bit Design>
+<Superconducting Qubits, connectedTo, Quantum Coherence Management>
+<Vacuum Systems for Trapped Ions, connectedTo, Laser Cooling for Ions>
+<Vacuum Systems for Trapped Ions, partOf, Quantum Bit Design>
diff --git a/train/mermaid/hard/mermaid_440.txt b/train/mermaid/hard/mermaid_440.txt
new file mode 100644
index 0000000000000000000000000000000000000000..442c8d89149cdfa1e67e7b58bdf507e381b300fa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_440.txt
@@ -0,0 +1,39 @@
+<Financial Modeling with Quantum Computing, connectedTo, Quantum Algorithm Development>
+<Material Science Simulations, connectedTo, Cryogenic Systems for Qubits>
+<Material Science Simulations, connectedTo, Optimization Problems with Quantum Annealing>
+<Material Science Simulations, connectedTo, Quantum Hardware Control>
+<Material Science Simulations, connectedTo, Quantum Software Development Kit>
+<Material Science Simulations, models, Quantum Error Correction>
+<Microwave Control for Qubits, connectedTo, Material Science Simulations>
+<Microwave Control for Qubits, connectedTo, Optimization Problems with Quantum Annealing>
+<Microwave Control for Qubits, connectedTo, Quantum Computing Benchmarking>
+<Optimization Problems with Quantum Annealing, connectedTo, Quantum Processor Fabrication>
+<Photonic Qubits, connectedTo, Quantum Circuit Design>
+<Photonic Qubits, connectedTo, Quantum Computing Benchmarking>
+<Quantum Algorithm Development, connectedTo, Quantum Computing Benchmarking>
+<Quantum Algorithm Development, connectedTo, Quantum Error Correction>
+<Quantum Annealing, connectedTo, Optimization Problems with Quantum Annealing>
+<Quantum Circuit Design, connectedTo, Quantum Computing Benchmarking>
+<Quantum Circuit Design, connectedTo, Quantum Sensing>
+<Quantum Coherence Management, connectedTo, Quantum Teleportation Research>
+<Quantum Coherence Management, partOf, Laser Cooling for Ions>
+<Quantum Computing Benchmarking, connectedTo, Quantum Supremacy Claims>
+<Quantum Computing Education, connectedTo, Quantum Programming Languages>
+<Quantum Computing Education, partOf, Interfacing Classical and Quantum Computers>
+<Quantum Error Correction, connectedTo, Photonic Qubits>
+<Quantum Hardware Control, connectedTo, Financial Modeling with Quantum Computing>
+<Quantum Hardware Control, connectedTo, Quantum Computing Benchmarking>
+<Quantum Network Development, innovates, Optimization Problems with Quantum Annealing>
+<Quantum Network Development, partOf, Laser Cooling for Ions>
+<Quantum Processor Fabrication, connectedTo, Cryogenic Systems for Qubits>
+<Quantum Programming Languages, connectedTo, Quantum Error Correction>
+<Quantum Programming Languages, partOf, Interfacing Classical and Quantum Computers>
+<Quantum Sensing, connectedTo, Quantum Coherence Management>
+<Quantum Sensing, partOf, Laser Cooling for Ions>
+<Quantum Software Development Kit, connectedTo, Quantum Hardware Control>
+<Quantum Software Development Kit, protects, Quantum Computing Education>
+<Quantum Supremacy Claims, connectedTo, Quantum Annealing>
+<Quantum Teleportation Research, connectedTo, Quantum Network Development>
+<Quantum Teleportation Research, partOf, Laser Cooling for Ions>
+<Topological Qubits, connectedTo, Microwave Control for Qubits>
+<start, connectedTo, Topological Qubits>
diff --git a/train/mermaid/hard/mermaid_442.txt b/train/mermaid/hard/mermaid_442.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8475cb8847a304358840dbb738fd78692f9bef7b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_442.txt
@@ -0,0 +1,35 @@
+<3D Model Creation, connectedTo, Haptic Feedback Integration>
+<AR for Navigation, connectedTo, 3D Model Creation>
+<AR for Navigation, partOf, User Experience Testing>
+<Architectural Visualization, connectedTo, Environment Mapping>
+<Augmented Reality App Development, connectedTo, Field of View Optimization>
+<Cloud_based AR or VR Rendering, connectedTo, Software Development Kit Integration>
+<Cloud_based AR or VR Rendering, connectedTo, Spatial Audio Implementation>
+<Content Creation for AR or VR, connectedTo, Performance Optimization>
+<Content Creation for AR or VR, partOf, Hand Tracking and Interaction>
+<Educational Content Development, connectedTo, 3D Model Creation>
+<Educational Content Development, connectedTo, Haptic Feedback Integration>
+<Environment Mapping, connectedTo, Augmented Reality App Development>
+<Environment Mapping, connectedTo, Content Creation for AR or VR>
+<Field of View Optimization, connectedTo, Cloud_based AR or VR Rendering>
+<Haptic Feedback Integration, connectedTo, Environment Mapping>
+<Haptic Feedback Integration, connectedTo, Tracking System Calibration>
+<Industrial Maintenance Support, connectedTo, Virtual Showrooms>
+<Industrial Maintenance Support, partOf, User Experience Testing>
+<Performance Optimization, connectedTo, Augmented Reality App Development>
+<Performance Optimization, partOf, Hand Tracking and Interaction>
+<Remote Collaboration Tools, connectedTo, 3D Model Creation>
+<Remote Collaboration Tools, connectedTo, Cloud_based AR or VR Rendering>
+<Remote Collaboration Tools, connectedTo, Educational Content Development>
+<Remote Collaboration Tools, connectedTo, Haptic Feedback Integration>
+<Spatial Audio Implementation, connectedTo, Industrial Maintenance Support>
+<Spatial Audio Implementation, partOf, User Experience Testing>
+<Tracking System Calibration, connectedTo, Architectural Visualization>
+<Tracking System Calibration, connectedTo, Augmented Reality App Development>
+<Tracking System Calibration, connectedTo, Environment Mapping>
+<Tracking System Calibration, connectedTo, Field of View Optimization>
+<Tracking System Calibration, no, Cloud_based AR or VR Rendering>
+<Virtual Showrooms, connectedTo, AR for Navigation>
+<Virtual Showrooms, partOf, User Experience Testing>
+<start, connectedTo, Haptic Feedback Integration>
+<start, connectedTo, Remote Collaboration Tools>
diff --git a/train/mermaid/hard/mermaid_444.txt b/train/mermaid/hard/mermaid_444.txt
new file mode 100644
index 0000000000000000000000000000000000000000..47493cd3e6989ada7e0085a9fdec97c8ce72b706
--- /dev/null
+++ b/train/mermaid/hard/mermaid_444.txt
@@ -0,0 +1,40 @@
+<AR for Navigation, connectedTo, Headset Development>
+<AR for Navigation, connectedTo, Virtual Showrooms>
+<Comfort and Ergonomics Design, connectedTo, AR for Navigation>
+<Comfort and Ergonomics Design, connectedTo, Educational Content Development>
+<Comfort and Ergonomics Design, connectedTo, Hand Tracking and Interaction>
+<Comfort and Ergonomics Design, connectedTo, Headset Development>
+<Comfort and Ergonomics Design, connectedTo, Virtual Showrooms>
+<Educational Content Development, connectedTo, Environment Mapping>
+<Environment Mapping, connectedTo, Field of View Optimization>
+<Ethical Considerations in AR or VR, connectedTo, Haptic Feedback Integration>
+<Ethical Considerations in AR or VR, partOf, 3D Model Creation>
+<Field of View Optimization, connectedTo, Hand Tracking and Interaction>
+<Haptic Feedback Integration, connectedTo, Training Simulations>
+<Haptic Feedback Integration, partOf, 3D Model Creation>
+<Headset Development, audits, Environment Mapping>
+<Headset Development, connectedTo, Educational Content Development>
+<Headset Development, connectedTo, Hand Tracking and Interaction>
+<Headset Development, connectedTo, Wearable AR Devices>
+<Industrial Maintenance Support, connectedTo, Educational Content Development>
+<Industrial Maintenance Support, connectedTo, Tracking System Calibration>
+<Latency Reduction, connectedTo, Comfort and Ergonomics Design>
+<Latency Reduction, connectedTo, Headset Development>
+<Medical Applications, connectedTo, Virtual Reality Game Development>
+<Medical Applications, partOf, Neuro_VR Interfaces>
+<Remote Collaboration Tools, connectedTo, Headset Development>
+<Remote Collaboration Tools, connectedTo, Latency Reduction>
+<Spatial Audio Implementation, connectedTo, AR for Navigation>
+<Spatial Audio Implementation, partOf, Neuro_VR Interfaces>
+<Tracking System Calibration, connectedTo, Medical Applications>
+<Tracking System Calibration, partOf, Neuro_VR Interfaces>
+<Training Simulations, connectedTo, Virtual Showrooms>
+<Training Simulations, partOf, 3D Model Creation>
+<Virtual Reality Game Development, measures, Spatial Audio Implementation>
+<Virtual Reality Game Development, partOf, Neuro_VR Interfaces>
+<Virtual Showrooms, visualizes, Headset Development>
+<Wearable AR Devices, connectedTo, Educational Content Development>
+<Wearable AR Devices, connectedTo, Environment Mapping>
+<Wearable AR Devices, connectedTo, Field of View Optimization>
+<Wearable AR Devices, connectedTo, Industrial Maintenance Support>
+<Wearable AR Devices, generates, Ethical Considerations in AR or VR>
diff --git a/train/mermaid/hard/mermaid_445.mmd b/train/mermaid/hard/mermaid_445.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1136158a9e1cbc3dd15b242e7887c8d6acab200b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_445.mmd
@@ -0,0 +1,115 @@
+graph RL
+    N0([start])
+    N1[Medical Applications]
+    N2[[Content Creation for AR or VR]]
+    N3[/Performance Optimization/]
+    N4(Environment Mapping)
+    N5[(Neuro_VR Interfaces)]
+    N6([Wearable AR Devices])
+    N7(Facial Recognition in AR or VR)
+    N8([Hardware Prototyping])
+    N9(Multiplayer Experience Design)
+    N10([Live Event Streaming in VR])
+    N11(Field of View Optimization)
+    N12[/Data Visualization in AR or VR/]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Industrial Maintenance Support
+        nest0_0[User Experience Testing]
+        nest0_1[[Educational Content Development]]
+    end
+    subgraph Ethical Considerations in AR or VR
+        nest1_0[Retail Experience Enhancement]
+        nest1_1([Headset Development])
+        nest1_2[[Latency Reduction]]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> |no| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> |no| N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> |yes| N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    nest0_0 --> nest0_1
+    N11 --> nest0_0
+    nest0_1 --> N10
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N7 --> nest1_0
+    nest1_2 -.-> N4
+    N2 --> S0
+    S0 --> N13
+    S0 -.-> N4
+    N5 --> S1
+    S1 -.-> N8
+    S1 -.-> N9
+    S1 --> N7
+    S1 -.-> N11
+    N3 -.-> |no| M0
+    N4 -.-> M0
+    M0 -.-> N10
+    N0 --> M1
+    N6 -.-> M1
+    N4 --> M1
+    N5 --> |yes| M1
+    M1 -.-> N8
+    N3 -.-> M2
+    N4 --> M2
+    N0 -.-> M2
+    M2 -.-> N12
+    style S0 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#FFF6D9,stroke:#FFCC7A
+    style M0 fill:#FFF6D9,stroke:#FFCC7A
+    style M1 fill:#DACBE3,stroke:#A188D0
+    style M2 fill:#FFF6D9,stroke:#FFCC7A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#CB9BE1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_447.txt b/train/mermaid/hard/mermaid_447.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a3f412705132a736077f36ccb95f996fdf469bc3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_447.txt
@@ -0,0 +1,35 @@
+<Cloud_based AR or VR Rendering, connectedTo, Neuro_VR Interfaces>
+<Cloud_based AR or VR Rendering, partOf, Augmented Reality App Development>
+<Comfort and Ergonomics Design, connectedTo, Medical Applications>
+<Comfort and Ergonomics Design, connectedTo, Performance Optimization>
+<Comfort and Ergonomics Design, connectedTo, User Experience Testing>
+<Comfort and Ergonomics Design, connectedTo, Virtual Tourism Experiences>
+<Comfort and Ergonomics Design, connectedTo, end>
+<Environment Mapping, connectedTo, Software Development Kit Integration>
+<Environment Mapping, partOf, 3D Model Creation>
+<Gesture Recognition, connectedTo, end>
+<Haptic Feedback Integration, connectedTo, Environment Mapping>
+<Haptic Feedback Integration, connectedTo, Neuro_VR Interfaces>
+<Hardware Prototyping, connectedTo, Gesture Recognition>
+<Medical Applications, connectedTo, Remote Collaboration Tools>
+<Medical Applications, trains, Virtual Tourism Experiences>
+<Multiplayer Experience Design, creates, Spatial Audio Implementation>
+<Neuro_VR Interfaces, connectedTo, Comfort and Ergonomics Design>
+<Performance Optimization, connectedTo, Gesture Recognition>
+<Performance Optimization, connectedTo, Virtual Tourism Experiences>
+<Performance Optimization, connectedTo, end>
+<Performance Optimization, controls, User Interface Design>
+<Remote Collaboration Tools, partOf, Augmented Reality App Development>
+<Remote Collaboration Tools, renders, Wearable AR Devices>
+<Retail Experience Enhancement, connectedTo, Haptic Feedback Integration>
+<Software Development Kit Integration, connectedTo, Medical Applications>
+<Software Development Kit Integration, partOf, 3D Model Creation>
+<Spatial Audio Implementation, builds, Retail Experience Enhancement>
+<User Experience Testing, connectedTo, Gesture Recognition>
+<User Experience Testing, connectedTo, end>
+<User Experience Testing, educates, Hardware Prototyping>
+<User Interface Design, connectedTo, Medical Applications>
+<User Interface Design, connectedTo, Virtual Tourism Experiences>
+<Virtual Tourism Experiences, connectedTo, User Experience Testing>
+<Wearable AR Devices, optimizes, Cloud_based AR or VR Rendering>
+<Wearable AR Devices, partOf, Augmented Reality App Development>
diff --git a/train/mermaid/hard/mermaid_448.mmd b/train/mermaid/hard/mermaid_448.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8c52e44aa4f4ca4dc3b7b1162ec98a1791ae15d9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_448.mmd
@@ -0,0 +1,85 @@
+graph RL
+    N0([start])
+    N1([Tracking System Calibration])
+    N2([Medical Applications])
+    N3(Multiplayer Experience Design)
+    N4(Live Event Streaming in VR)
+    N5[/Industrial Maintenance Support/]
+    N6(Software Development Kit Integration)
+    N7[(Headset Development)]
+    N8[/Content Creation for AR or VR/]
+    N9(Facial Recognition in AR or VR)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Performance Optimization
+        nest0_0{Cloud_based AR or VR Rendering}
+        nest0_1([User Interface Design])
+        nest0_2([3D Model Creation])
+    end
+    subgraph Haptic Feedback Integration
+        nest1_0(Hand Tracking and Interaction)
+        nest1_1(Virtual Reality Game Development)
+        nest1_2(Ethical Considerations in AR or VR)
+        nest1_3[Immersive Storytelling]
+    end
+    N0 --> |yes| N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> |no| N7
+    N7 --> N8
+    N8 --> N9
+    nest0_0 -.-> |no| nest0_1
+    nest0_1 --> |no| nest0_2
+    N3 -.-> nest0_0
+    nest0_2 --> N5
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N6 --> nest1_0
+    nest1_3 -.-> N4
+    N1 --> S0
+    S0 --> N6
+    S0 --> N5
+    N1 -.-> S1
+    S1 -.-> N3
+    S1 --> N6
+    S1 -.-> N4
+    N1 --> M0
+    N0 --> M0
+    M0 -.-> N7
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#D1C4E9,stroke:#7E57C2
+    style M0 fill:#D1C4E9,stroke:#7E57C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_45.txt b/train/mermaid/hard/mermaid_45.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1d410ae67a76ce3468b2bc744eab7cb43970a099
--- /dev/null
+++ b/train/mermaid/hard/mermaid_45.txt
@@ -0,0 +1,36 @@
+<Air Traffic Control, partOf, Maintenance Check>
+<Air Traffic Control, plans, Load Balancing>
+<Arrival, connectedTo, Air Traffic Control>
+<Arrival, partOf, Maintenance Check>
+<Customs Clearance, connectedTo, Route Optimization>
+<Customs Clearance, partOf, Road Network Management>
+<Electric Vehicle Charging, connectedTo, Arrival>
+<Electric Vehicle Charging, partOf, Maintenance Check>
+<Fare Calculation, connectedTo, Incident Report>
+<Fueling, connectedTo, Vehicle Tracking>
+<Incident Report, connectedTo, Parking Management>
+<Load Balancing, connectedTo, Vehicle Tracking>
+<Load Balancing, connectedTo, Weather Impact Assessment>
+<Location Input, connectedTo, Navigation Update>
+<Location Input, connectedTo, Platform Assignment>
+<Luggage Handling, connectedTo, Vehicle Assignment>
+<Navigation Update, connectedTo, Electric Vehicle Charging>
+<Navigation Update, partOf, Maintenance Check>
+<Platform Assignment, connectedTo, Fare Calculation>
+<Platform Assignment, connectedTo, Incident Report>
+<Platform Assignment, connectedTo, Parking Management>
+<Route Diversion, connectedTo, Load Balancing>
+<Route Diversion, connectedTo, Vehicle Tracking>
+<Route Diversion, logs, Weather Impact Assessment>
+<Route Optimization, connectedTo, Schedule Generation>
+<Route Optimization, partOf, Road Network Management>
+<Schedule Generation, partOf, Road Network Management>
+<Schedule Generation, repairs, Incident Report>
+<Vehicle Assignment, connectedTo, Customs Clearance>
+<Vehicle Assignment, connectedTo, Location Input>
+<Vehicle Tracking, connectedTo, Luggage Handling>
+<Weather Impact Assessment, connectedTo, Fueling>
+<Weather Impact Assessment, connectedTo, Vehicle Assignment>
+<Weather Impact Assessment, connectedTo, Vehicle Tracking>
+<start, connectedTo, Route Diversion>
+<start, connectedTo, Weather Impact Assessment>
diff --git a/train/mermaid/hard/mermaid_451.txt b/train/mermaid/hard/mermaid_451.txt
new file mode 100644
index 0000000000000000000000000000000000000000..06e9b16847d948ae44f5226a1ae8483187224206
--- /dev/null
+++ b/train/mermaid/hard/mermaid_451.txt
@@ -0,0 +1,39 @@
+<AI Behavior Programming, connectedTo, Programming>
+<AI Behavior Programming, partOf, Game Engine Customization>
+<Art Direction, connectedTo, User Experience Design>
+<Art Direction, partOf, Console Game Development>
+<Augmented Reality Gaming, connectedTo, AI Behavior Programming>
+<Augmented Reality Gaming, connectedTo, Game Analytics>
+<Community Management, connectedTo, Voice Acting>
+<Community Management, partOf, Console Game Development>
+<Game Analytics, connectedTo, Community Management>
+<Game Analytics, connectedTo, Player Feedback Integration>
+<Game Publishing, connectedTo, Game Analytics>
+<Game Publishing, connectedTo, Motion Capture>
+<Game Publishing, connectedTo, Player Feedback Integration>
+<Marketing and Promotion, connectedTo, Player Feedback Integration>
+<Marketing and Promotion, partOf, Game Engine Customization>
+<Motion Capture, connectedTo, Game Analytics>
+<Motion Capture, connectedTo, Narrative Design>
+<Narrative Design, connectedTo, Augmented Reality Gaming>
+<Narrative Design, connectedTo, Game Analytics>
+<Narrative Design, connectedTo, Network Code Optimization>
+<Narrative Design, connectedTo, Player Feedback Integration>
+<Narrative Design, connectedTo, Sound Design>
+<Narrative Design, connectedTo, User Experience Design>
+<Network Code Optimization, connectedTo, Augmented Reality Gaming>
+<Network Code Optimization, connectedTo, Player Feedback Integration>
+<PC Game Development, connectedTo, Marketing and Promotion>
+<PC Game Development, partOf, Game Engine Customization>
+<Physics Simulation, connectedTo, Game Publishing>
+<Physics Simulation, connectedTo, Motion Capture>
+<Physics Simulation, connectedTo, Player Progression Systems>
+<Player Feedback Integration, connectedTo, Player Progression Systems>
+<Player Progression Systems, connectedTo, User Experience Design>
+<Programming, connectedTo, PC Game Development>
+<Programming, partOf, Game Engine Customization>
+<Sound Design, connectedTo, Game Analytics>
+<Sound Design, connectedTo, Network Code Optimization>
+<Sound Design, connectedTo, Player Feedback Integration>
+<Voice Acting, connectedTo, Art Direction>
+<Voice Acting, partOf, Console Game Development>
diff --git a/train/mermaid/hard/mermaid_452.mmd b/train/mermaid/hard/mermaid_452.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..02d1b23cf730e63fa8b1f6ddcfe07bd9946611fa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_452.mmd
@@ -0,0 +1,100 @@
+graph LR
+    N0([User Experience Design])
+    N1[[Anti_Cheat Development]]
+    N2[Programming]
+    N3[Esports Event Organization]
+    N4([Marketing and Promotion])
+    N5[/Console Game Development/]
+    N6[Voice Acting]
+    N7(Art Direction)
+    N8(User Interface Design)
+    N9[(PC Game Development)]
+    N10[(Monetization Strategy)]
+    S0(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Network Code Optimization
+        nest0_0[/Mobile Game Development/]
+        nest0_1([Bug Fixing])
+        nest0_2[Player Progression Systems]
+    end
+    subgraph Game Analytics
+        nest1_0[In_Game Economy Design]
+        nest1_1{Asset Creation}
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N6 -.-> |regulates| nest0_0
+    nest0_2 -.-> N10
+    nest1_0 -.-> nest1_1
+    N5 -.-> nest1_0
+    nest1_1 -.-> N2
+    N5 --> S0
+    S0 --> N9
+    S0 -.-> |renders| N7
+    N5 --> S2
+    S2 --> N10
+    S2 -.-> N9
+    S2 -.-> N8
+    N4 --> M2
+    N6 -.-> M2
+    N7 -.-> M2
+    M2 -.-> N9
+    style N0 fill:#F5F5F5,stroke:#BDBDBD
+    style N1 fill:#ECCFF5,stroke:#CD8FF2
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#F5F5F5,stroke:#BDBDBD
+    style N4 fill:#FBE9E7,stroke:#FF8A65
+    style N5 fill:#ECCFF5,stroke:#CD8FF2
+    style N6 fill:#F5F5F5,stroke:#BDBDBD
+    style N7 fill:#F5F5F5,stroke:#BDBDBD
+    style N8 fill:#F5F5F5,stroke:#BDBDBD
+    style N9 fill:#FBE9E7,stroke:#FF8A65
+    style N10 fill:#ECCFF5,stroke:#CD8FF2
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S2 fill:#F5F5F5,stroke:#BDBDBD
+    style M2 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_1 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_2 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_1 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_452.txt b/train/mermaid/hard/mermaid_452.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2c575508f0726f61f2d72a3e8048158f172cedcb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_452.txt
@@ -0,0 +1,29 @@
+<Anti_Cheat Development, connectedTo, Programming>
+<Art Direction, connectedTo, PC Game Development>
+<Art Direction, connectedTo, User Interface Design>
+<Asset Creation, connectedTo, Programming>
+<Asset Creation, partOf, Game Analytics>
+<Bug Fixing, connectedTo, Player Progression Systems>
+<Bug Fixing, partOf, Network Code Optimization>
+<Console Game Development, connectedTo, In_Game Economy Design>
+<Console Game Development, connectedTo, Monetization Strategy>
+<Console Game Development, connectedTo, PC Game Development>
+<Console Game Development, connectedTo, User Interface Design>
+<Console Game Development, connectedTo, Voice Acting>
+<Console Game Development, renders, Art Direction>
+<Esports Event Organization, connectedTo, Marketing and Promotion>
+<In_Game Economy Design, connectedTo, Asset Creation>
+<In_Game Economy Design, partOf, Game Analytics>
+<Marketing and Promotion, connectedTo, Console Game Development>
+<Marketing and Promotion, connectedTo, PC Game Development>
+<Mobile Game Development, connectedTo, Bug Fixing>
+<Mobile Game Development, partOf, Network Code Optimization>
+<PC Game Development, connectedTo, Monetization Strategy>
+<Player Progression Systems, connectedTo, Monetization Strategy>
+<Player Progression Systems, partOf, Network Code Optimization>
+<Programming, connectedTo, Esports Event Organization>
+<User Experience Design, connectedTo, Anti_Cheat Development>
+<User Interface Design, connectedTo, PC Game Development>
+<Voice Acting, connectedTo, Art Direction>
+<Voice Acting, connectedTo, PC Game Development>
+<Voice Acting, regulates, Mobile Game Development>
diff --git a/train/mermaid/hard/mermaid_453.txt b/train/mermaid/hard/mermaid_453.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ddbb4c6f30f12ab05c9349037726baf9dbf77fac
--- /dev/null
+++ b/train/mermaid/hard/mermaid_453.txt
@@ -0,0 +1,31 @@
+<Art Direction, connectedTo, Augmented Reality Gaming>
+<Art Direction, connectedTo, Game Publishing>
+<Art Direction, connectedTo, Player Feedback Integration>
+<Art Direction, no, Quality Assurance Testing>
+<Asset Creation, connectedTo, Quality Assurance Testing>
+<Game Balancing, connectedTo, Asset Creation>
+<Game Engine Customization, connectedTo, Art Direction>
+<Game Engine Customization, connectedTo, Game Balancing>
+<Game Engine Customization, connectedTo, Player Feedback Integration>
+<Game Engine Customization, connectedTo, Voice Acting>
+<Game Engine Customization, no, Monetization Strategy>
+<Game Publishing, no, Localization>
+<Game Publishing, partOf, AI Behavior Programming>
+<Level Design, yes, Augmented Reality Gaming>
+<Localization, connectedTo, Virtual Reality Gaming>
+<Localization, partOf, AI Behavior Programming>
+<Mobile Game Development, connectedTo, Player Progression Systems>
+<Mobile Game Development, partOf, Character Design>
+<Monetization Strategy, connectedTo, Art Direction>
+<Network Code Optimization, connectedTo, Mobile Game Development>
+<Network Code Optimization, partOf, Character Design>
+<Player Feedback Integration, connectedTo, Game Balancing>
+<Player Progression Systems, connectedTo, Game Engine Customization>
+<Player Progression Systems, partOf, Character Design>
+<Quality Assurance Testing, connectedTo, Level Design>
+<Virtual Reality Gaming, connectedTo, Art Direction>
+<Virtual Reality Gaming, partOf, AI Behavior Programming>
+<Voice Acting, connectedTo, Network Code Optimization>
+<Voice Acting, partOf, Character Design>
+<start, connectedTo, Player Feedback Integration>
+<start, no, Game Engine Customization>
diff --git a/train/mermaid/hard/mermaid_456.txt b/train/mermaid/hard/mermaid_456.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fa8da7e78a21e0bf19f4c1049978a284711ac966
--- /dev/null
+++ b/train/mermaid/hard/mermaid_456.txt
@@ -0,0 +1,38 @@
+<AI Behavior Programming, connectedTo, Level Design>
+<AI Behavior Programming, partOf, Marketing and Promotion>
+<Art Direction, connectedTo, Mobile Game Development>
+<Asset Creation, connectedTo, Game Publishing>
+<Asset Creation, partOf, Player Feedback Integration>
+<Bug Fixing, connectedTo, Game Analytics>
+<Bug Fixing, partOf, Player Feedback Integration>
+<Engine Development, connectedTo, Quality Assurance Testing>
+<Engine Development, partOf, Marketing and Promotion>
+<Esports Event Organization, connectedTo, Console Game Development>
+<Game Analytics, connectedTo, Esports Event Organization>
+<Game Engine Customization, connectedTo, Programming>
+<Game Publishing, connectedTo, Bug Fixing>
+<Game Publishing, partOf, Player Feedback Integration>
+<In_Game Economy Design, connectedTo, AI Behavior Programming>
+<In_Game Economy Design, no, Network Code Optimization>
+<Level Design, connectedTo, Engine Development>
+<Level Design, partOf, Marketing and Promotion>
+<Localization, connectedTo, Art Direction>
+<Localization, connectedTo, Asset Creation>
+<Localization, connectedTo, Game Analytics>
+<Localization, connectedTo, Game Engine Customization>
+<Localization, connectedTo, In_Game Economy Design>
+<Localization, connectedTo, Mobile Game Development>
+<Localization, connectedTo, Virtual Reality Gaming>
+<Localization, no, Esports Event Organization>
+<Mobile Game Development, connectedTo, Multiplayer Game Development>
+<Multiplayer Game Development, connectedTo, Game Engine Customization>
+<Network Code Optimization, connectedTo, Game Analytics>
+<Programming, connectedTo, In_Game Economy Design>
+<Quality Assurance Testing, connectedTo, Console Game Development>
+<Quality Assurance Testing, partOf, Marketing and Promotion>
+<Virtual Reality Gaming, connectedTo, Art Direction>
+<Virtual Reality Gaming, connectedTo, Esports Event Organization>
+<start, connectedTo, Art Direction>
+<start, connectedTo, Esports Event Organization>
+<start, connectedTo, Localization>
+<start, yes, Esports Event Organization>
diff --git a/train/mermaid/hard/mermaid_457.mmd b/train/mermaid/hard/mermaid_457.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..089a235f309b6821dba4c0fadb2d49860e974055
--- /dev/null
+++ b/train/mermaid/hard/mermaid_457.mmd
@@ -0,0 +1,132 @@
+graph BT
+    N0([start])
+    N1[Ticketing]
+    N2(Instrumental Performance)
+    N3(Beat Making)
+    N4[/Performance/]
+    N5(Sound System Design)
+    N6[[Music Licensing]]
+    N7([Music Video Production])
+    N8[Concert Promotion]
+    N9[Vocal Performance]
+    N10(Artist Management)
+    N11[Music for Film or TV or Games]
+    N12([Tour Management])
+    N13[/Music Publishing/]
+    N14[Composition]
+    N15[[Recording]]
+    N16[Sound Design for Media]
+    N17(Mastering)
+    N18([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Copyright Management
+        nest0_0(Music Therapy)
+        nest0_1[Music Education]
+    end
+    subgraph Synthesizer Programming
+        nest1_0[(Sampling)]
+        nest1_1(Songwriting)
+        nest1_2(A&R)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |no| N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    N16 --> |no| N17
+    N17 -.-> |no| N18
+    nest0_0 --> |no| nest0_1
+    N15 --> |no| nest0_0
+    nest0_1 --> N6
+    nest1_0 --> nest1_1
+    nest1_1 -.-> |no| nest1_2
+    N11 --> nest1_0
+    nest1_2 --> N7
+    N14 -.-> S0
+    S0 --> N16
+    S0 -.-> |yes| N18
+    N10 --> S1
+    S1 -.-> N13
+    S1 -.-> N17
+    S1 --> N12
+    N6 --> S2
+    S2 -.-> N9
+    S2 --> |no| N16
+    N0 -.-> M0
+    N1 -.-> M0
+    M0 -.-> N6
+    N2 -.-> M1
+    N4 -.-> M1
+    M1 -.-> N11
+    N7 -.-> M2
+    N1 -.-> M2
+    N11 --> M2
+    M2 --> N13
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style S2 fill:#E0F2F1,stroke:#4DB6AC
+    style M0 fill:#E0F2F1,stroke:#4DB6AC
+    style M1 fill:#E0F2F1,stroke:#4DB6AC
+    style M2 fill:#C9F0F0,stroke:#4DD0E1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#4DD0E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_458.txt b/train/mermaid/hard/mermaid_458.txt
new file mode 100644
index 0000000000000000000000000000000000000000..94683dc359b416af9266591f883dfe1f6c5c2f24
--- /dev/null
+++ b/train/mermaid/hard/mermaid_458.txt
@@ -0,0 +1,38 @@
+<A&R, connectedTo, Crowdfunding for Music Projects>
+<A&R, connectedTo, Streaming Platform Management>
+<Audio Engineering, connectedTo, end>
+<Beat Making, connectedTo, Music Production>
+<Concert Promotion, connectedTo, Music Festival Organization>
+<Concert Promotion, connectedTo, Sound System Design>
+<Copyright Management, connectedTo, Music for Film or TV or Games>
+<Copyright Management, partOf, Lyric Writing>
+<Crowdfunding for Music Projects, connectedTo, Copyright Management>
+<Crowdfunding for Music Projects, partOf, Lyric Writing>
+<Fan Engagement Strategy, connectedTo, Beat Making>
+<Fan Engagement Strategy, connectedTo, Sound System Design>
+<Merchandise Sales, connectedTo, Music Festival Organization>
+<Merchandise Sales, partOf, Instrumental Performance>
+<Mixing, connectedTo, Merchandise Sales>
+<Mixing, partOf, Instrumental Performance>
+<Music Festival Organization, connectedTo, Sound System Design>
+<Music Production, connectedTo, Music Video Production>
+<Music Production, connectedTo, Sound System Design>
+<Music Production, connectedTo, Synthesizer Programming>
+<Music Video Production, connectedTo, Concert Promotion>
+<Music Video Production, connectedTo, Synthesizer Programming>
+<Music Video Production, connectedTo, Vocal Performance>
+<Music for Film or TV or Games, connectedTo, end>
+<Music for Film or TV or Games, partOf, Lyric Writing>
+<Sampling, connectedTo, A&R>
+<Sampling, connectedTo, Synthesizer Programming>
+<Sampling, connectedTo, Ticketing>
+<Sound System Design, connectedTo, Sampling>
+<Streaming Platform Management, connectedTo, Ticketing>
+<Synthesizer Programming, connectedTo, A&R>
+<Synthesizer Programming, connectedTo, Audio Engineering>
+<Synthesizer Programming, connectedTo, Streaming Platform Management>
+<Synthesizer Programming, connectedTo, Ticketing>
+<Synthesizer Programming, connectedTo, end>
+<Ticketing, connectedTo, Audio Engineering>
+<Vocal Performance, connectedTo, Mixing>
+<Vocal Performance, partOf, Instrumental Performance>
diff --git a/train/mermaid/hard/mermaid_459.mmd b/train/mermaid/hard/mermaid_459.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..dcee93554b264621d7aea50576a25b8b2b9b831e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_459.mmd
@@ -0,0 +1,130 @@
+graph BT
+    N0([start])
+    N1[Sampling]
+    N2{Songwriting}
+    N3[/Arrangement/]
+    N4(Mastering)
+    N5[[Audio Engineering]]
+    N6[Music Festival Organization]
+    N7(Digital Audio Workstation Operation)
+    N8[Music Licensing]
+    N9[/Artist Management/]
+    N10(Music Distribution)
+    N11([Mixing])
+    N12([Recording])
+    N13[Music Video Production]
+    N14(Instrumental Performance)
+    N15{Synthesizer Programming}
+    N16([Streaming Platform Management])
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Sound System Design
+        nest0_0(Live Sound Engineering)
+        nest0_1[[Beat Making]]
+        nest0_2[[Tour Management]]
+    end
+    subgraph Record Label Operations
+        nest1_0(Music Publishing)
+        nest1_1[Music Theory Analysis]
+        nest1_2([Royalty Collection])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> |funds| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N10 --> |therapies| nest0_0
+    nest0_2 -.-> N10
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N7 -.-> nest1_0
+    nest1_2 -.-> N7
+    N6 --> S1
+    S1 --> N12
+    S1 --> N11
+    N10 -.-> |programs| M0
+    N9 --> M0
+    N2 --> M0
+    N4 --> M0
+    M0 -.-> N16
+    N9 -.-> |invests| M1
+    N4 --> M1
+    N11 -.-> M1
+    M1 -.-> N13
+    style N0 fill:#FBE9E7,stroke:#FF8A65
+    style N1 fill:#ECCFF5,stroke:#CD8FF2
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#FBE9E7,stroke:#FF8A65
+    style N4 fill:#FBE9E7,stroke:#FF8A65
+    style N5 fill:#FBE9E7,stroke:#FF8A65
+    style N6 fill:#FBE9E7,stroke:#FF8A65
+    style N7 fill:#ECCFF5,stroke:#CD8FF2
+    style N8 fill:#EDF5F3,stroke:#A1D7CD
+    style N9 fill:#EDF5F3,stroke:#A1D7CD
+    style N10 fill:#ECCFF5,stroke:#CD8FF2
+    style N11 fill:#ECCFF5,stroke:#CD8FF2
+    style N12 fill:#FBE9E7,stroke:#FF8A65
+    style N13 fill:#FBE9E7,stroke:#FF8A65
+    style N14 fill:#ECCFF5,stroke:#CD8FF2
+    style N15 fill:#ECCFF5,stroke:#CD8FF2
+    style N16 fill:#EDF5F3,stroke:#A1D7CD
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#ECCFF5,stroke:#CD8FF2
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_0 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_1 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_2 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_0 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_1 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_2 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#CD8FF2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_459.txt b/train/mermaid/hard/mermaid_459.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3df6b12ffe66944463cf250a0b467d848dd6a7d7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_459.txt
@@ -0,0 +1,39 @@
+<Arrangement, connectedTo, Mastering>
+<Artist Management, connectedTo, Music Distribution>
+<Artist Management, connectedTo, Streaming Platform Management>
+<Artist Management, invests, Music Video Production>
+<Audio Engineering, connectedTo, Music Festival Organization>
+<Beat Making, connectedTo, Tour Management>
+<Beat Making, partOf, Sound System Design>
+<Digital Audio Workstation Operation, connectedTo, Music Licensing>
+<Digital Audio Workstation Operation, connectedTo, Music Publishing>
+<Instrumental Performance, connectedTo, Synthesizer Programming>
+<Live Sound Engineering, connectedTo, Beat Making>
+<Live Sound Engineering, partOf, Sound System Design>
+<Mastering, connectedTo, Audio Engineering>
+<Mastering, connectedTo, Music Video Production>
+<Mastering, connectedTo, Streaming Platform Management>
+<Mixing, connectedTo, Music Video Production>
+<Mixing, connectedTo, Recording>
+<Music Distribution, connectedTo, Mixing>
+<Music Distribution, programs, Streaming Platform Management>
+<Music Distribution, therapies, Live Sound Engineering>
+<Music Festival Organization, connectedTo, Mixing>
+<Music Festival Organization, connectedTo, Recording>
+<Music Festival Organization, funds, Digital Audio Workstation Operation>
+<Music Licensing, connectedTo, Artist Management>
+<Music Publishing, connectedTo, Music Theory Analysis>
+<Music Publishing, partOf, Record Label Operations>
+<Music Theory Analysis, connectedTo, Royalty Collection>
+<Music Theory Analysis, partOf, Record Label Operations>
+<Music Video Production, connectedTo, Instrumental Performance>
+<Recording, connectedTo, Music Video Production>
+<Royalty Collection, connectedTo, Digital Audio Workstation Operation>
+<Royalty Collection, partOf, Record Label Operations>
+<Sampling, connectedTo, Songwriting>
+<Songwriting, connectedTo, Arrangement>
+<Songwriting, connectedTo, Streaming Platform Management>
+<Synthesizer Programming, connectedTo, Streaming Platform Management>
+<Tour Management, connectedTo, Music Distribution>
+<Tour Management, partOf, Sound System Design>
+<start, connectedTo, Sampling>
diff --git a/train/mermaid/hard/mermaid_46.mmd b/train/mermaid/hard/mermaid_46.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9d0ad1b6e56940db1f5de5f70cc8ebd7da0d391c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_46.mmd
@@ -0,0 +1,114 @@
+graph LR
+    N0([Load Balancing])
+    N1[[Air Traffic Control]]
+    N2[(Boarding)]
+    N3{Incident Report}
+    N4([Route Diversion])
+    N5[/Security Check/]
+    N6(Arrival)
+    N7[Train Dispatch]
+    N8{Emergency Landing}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Traffic Monitoring
+        nest0_0[[Schedule Generation]]
+        nest0_1{Ticket Purchase}
+        nest0_2[Navigation Update]
+    end
+    subgraph Passenger Feedback
+        nest1_0(Cargo Loading)
+        nest1_1[Intermodal Transfer]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N5 -.-> nest0_0
+    nest0_2 -.-> N6
+    nest1_0 -.-> nest1_1
+    N7 -.-> nest1_0
+    nest1_1 -.-> N8
+    N0 --> S0
+    S0 --> N2
+    S0 -.-> N8
+    S0 -.-> N6
+    N1 -.-> S1
+    S1 --> N6
+    S1 -.-> N8
+    N2 -.-> S2
+    S2 -.-> N6
+    S2 -.-> N8
+    S2 -.-> N5
+    S2 -.-> N4
+    N1 -.-> M0
+    N2 -.-> M0
+    N0 -.-> M0
+    M0 -.-> N5
+    N3 --> M1
+    N2 --> M1
+    N0 --> M1
+    M1 --> N6
+    style N0 fill:#E9F7E8,stroke:#6EB76D
+    style N1 fill:#DDCEDD,stroke:#AF56A6
+    style N2 fill:#DDCEDD,stroke:#AF56A6
+    style N3 fill:#FFF9D4,stroke:#FFE69C
+    style N4 fill:#FFF9D4,stroke:#FFE69C
+    style N5 fill:#DDCEDD,stroke:#AF56A6
+    style N6 fill:#DDCEDD,stroke:#AF56A6
+    style N7 fill:#FFF9D4,stroke:#FFE69C
+    style N8 fill:#FFF9D4,stroke:#FFE69C
+    style S0 fill:#FFF9D4,stroke:#FFE69C
+    style S1 fill:#DDCEDD,stroke:#AF56A6
+    style S2 fill:#E9F7E8,stroke:#6EB76D
+    style M0 fill:#E9F7E8,stroke:#6EB76D
+    style M1 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_0 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_1 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_2 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_1 fill:#FFF9D4,stroke:#FFE69C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AF56A6,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_46.txt b/train/mermaid/hard/mermaid_46.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b91a661093dafeb58737cfc4d4cf1e8f66c178dd
--- /dev/null
+++ b/train/mermaid/hard/mermaid_46.txt
@@ -0,0 +1,32 @@
+<Air Traffic Control, connectedTo, Arrival>
+<Air Traffic Control, connectedTo, Boarding>
+<Air Traffic Control, connectedTo, Emergency Landing>
+<Air Traffic Control, connectedTo, Security Check>
+<Arrival, connectedTo, Train Dispatch>
+<Boarding, connectedTo, Arrival>
+<Boarding, connectedTo, Emergency Landing>
+<Boarding, connectedTo, Incident Report>
+<Boarding, connectedTo, Route Diversion>
+<Boarding, connectedTo, Security Check>
+<Cargo Loading, connectedTo, Intermodal Transfer>
+<Cargo Loading, partOf, Passenger Feedback>
+<Incident Report, connectedTo, Arrival>
+<Incident Report, connectedTo, Route Diversion>
+<Intermodal Transfer, connectedTo, Emergency Landing>
+<Intermodal Transfer, partOf, Passenger Feedback>
+<Load Balancing, connectedTo, Air Traffic Control>
+<Load Balancing, connectedTo, Arrival>
+<Load Balancing, connectedTo, Boarding>
+<Load Balancing, connectedTo, Emergency Landing>
+<Load Balancing, connectedTo, Security Check>
+<Navigation Update, connectedTo, Arrival>
+<Navigation Update, partOf, Traffic Monitoring>
+<Route Diversion, connectedTo, Security Check>
+<Schedule Generation, connectedTo, Ticket Purchase>
+<Schedule Generation, partOf, Traffic Monitoring>
+<Security Check, connectedTo, Arrival>
+<Security Check, connectedTo, Schedule Generation>
+<Ticket Purchase, connectedTo, Navigation Update>
+<Ticket Purchase, partOf, Traffic Monitoring>
+<Train Dispatch, connectedTo, Cargo Loading>
+<Train Dispatch, connectedTo, Emergency Landing>
diff --git a/train/mermaid/hard/mermaid_461.mmd b/train/mermaid/hard/mermaid_461.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ba60fd723dcb70d1d073ab5fce046c187f19a5e7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_461.mmd
@@ -0,0 +1,106 @@
+graph BT
+    N0([start])
+    N1[Lyric Writing]
+    N2[/Recording/]
+    N3[/Ticketing/]
+    N4(Vocal Performance)
+    N5(Record Label Operations)
+    N6[(Concert Promotion)]
+    N7{Streaming Platform Management}
+    N8(Copyright Management)
+    N9[Sound Design for Media]
+    N10[[Composition]]
+    N11(Artist Management)
+    N12([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Music Theory Analysis
+        nest0_0([Crowdfunding for Music Projects])
+        nest0_1[(Live Sound Engineering)]
+        nest0_2[(Music for Film or TV or Games)]
+    end
+    subgraph Music Video Production
+        nest1_0(Instrumental Performance)
+        nest1_1(Music Distribution)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N5 --> nest0_0
+    nest0_2 -.-> N9
+    nest1_0 -.-> nest1_1
+    N4 --> nest1_0
+    nest1_1 --> N4
+    N6 --> S0
+    S0 --> N10
+    S0 --> N8
+    S0 -.-> N9
+    N3 -.-> S1
+    S1 --> N8
+    S1 --> N10
+    S1 --> N5
+    N2 --> M0
+    N0 -.-> M0
+    M0 -.-> N6
+    N0 --> M1
+    N3 -.-> M1
+    M1 --> N12
+    N0 --> M2
+    N1 -.-> M2
+    M2 --> N3
+    style S0 fill:#FCE4EC,stroke:#E91E63
+    style S1 fill:#C2E8E6,stroke:#61CAC3
+    style M0 fill:#C2E8E6,stroke:#61CAC3
+    style M1 fill:#FFFDE7,stroke:#FFF176
+    style M2 fill:#FFFDE7,stroke:#FFF176
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFF176,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_461.txt b/train/mermaid/hard/mermaid_461.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b5accbdce693f5c78d2a8333b6e5d624616a7846
--- /dev/null
+++ b/train/mermaid/hard/mermaid_461.txt
@@ -0,0 +1,36 @@
+<Artist Management, connectedTo, end>
+<Composition, connectedTo, Artist Management>
+<Concert Promotion, connectedTo, Composition>
+<Concert Promotion, connectedTo, Copyright Management>
+<Concert Promotion, connectedTo, Sound Design for Media>
+<Concert Promotion, connectedTo, Streaming Platform Management>
+<Copyright Management, connectedTo, Sound Design for Media>
+<Crowdfunding for Music Projects, connectedTo, Live Sound Engineering>
+<Crowdfunding for Music Projects, partOf, Music Theory Analysis>
+<Instrumental Performance, connectedTo, Music Distribution>
+<Instrumental Performance, partOf, Music Video Production>
+<Live Sound Engineering, connectedTo, Music for Film or TV or Games>
+<Live Sound Engineering, partOf, Music Theory Analysis>
+<Lyric Writing, connectedTo, Recording>
+<Lyric Writing, connectedTo, Ticketing>
+<Music Distribution, connectedTo, Vocal Performance>
+<Music Distribution, partOf, Music Video Production>
+<Music for Film or TV or Games, connectedTo, Sound Design for Media>
+<Music for Film or TV or Games, partOf, Music Theory Analysis>
+<Record Label Operations, connectedTo, Concert Promotion>
+<Record Label Operations, connectedTo, Crowdfunding for Music Projects>
+<Recording, connectedTo, Concert Promotion>
+<Recording, connectedTo, Ticketing>
+<Sound Design for Media, connectedTo, Composition>
+<Streaming Platform Management, connectedTo, Copyright Management>
+<Ticketing, connectedTo, Composition>
+<Ticketing, connectedTo, Copyright Management>
+<Ticketing, connectedTo, Record Label Operations>
+<Ticketing, connectedTo, Vocal Performance>
+<Ticketing, connectedTo, end>
+<Vocal Performance, connectedTo, Instrumental Performance>
+<Vocal Performance, connectedTo, Record Label Operations>
+<start, connectedTo, Concert Promotion>
+<start, connectedTo, Lyric Writing>
+<start, connectedTo, Ticketing>
+<start, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_462.txt b/train/mermaid/hard/mermaid_462.txt
new file mode 100644
index 0000000000000000000000000000000000000000..44abab432e49bcaf6f594bcfe861885e159c3d8f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_462.txt
@@ -0,0 +1,38 @@
+<Artist Management, connectedTo, Royalty Collection>
+<Audio Engineering, connectedTo, Music Distribution>
+<Audio Engineering, connectedTo, Streaming Platform Management>
+<Composition, connectedTo, Music Festival Organization>
+<Composition, partOf, Lyric Writing>
+<Copyright Management, connectedTo, Fan Engagement Strategy>
+<Fan Engagement Strategy, connectedTo, A&R>
+<Fan Engagement Strategy, connectedTo, Audio Engineering>
+<Fan Engagement Strategy, connectedTo, Music Theory Analysis>
+<Fan Engagement Strategy, connectedTo, Streaming Platform Management>
+<Instrumental Performance, connectedTo, Record Label Operations>
+<Instrumental Performance, connectedTo, Royalty Collection>
+<Mastering, connectedTo, Composition>
+<Mastering, partOf, Lyric Writing>
+<Mixing, connectedTo, Instrumental Performance>
+<Mixing, markets, Record Label Operations>
+<Music Distribution, partOf, Synthesizer Programming>
+<Music Distribution, teaches, Songwriting>
+<Music Festival Organization, connectedTo, Record Label Operations>
+<Music Festival Organization, partOf, Lyric Writing>
+<Music Theory Analysis, connectedTo, A&R>
+<Music Therapy, connectedTo, Fan Engagement Strategy>
+<Music Therapy, connectedTo, Instrumental Performance>
+<Music Therapy, connectedTo, Mixing>
+<Music Therapy, connectedTo, Performance>
+<Performance, connectedTo, Mixing>
+<Performance, connectedTo, Record Label Operations>
+<Performance, connectedTo, Royalty Collection>
+<Record Label Operations, connectedTo, Artist Management>
+<Record Label Operations, connectedTo, Audio Engineering>
+<Record Label Operations, connectedTo, Copyright Management>
+<Royalty Collection, connectedTo, Music Theory Analysis>
+<Songwriting, connectedTo, Tour Management>
+<Songwriting, partOf, Synthesizer Programming>
+<Streaming Platform Management, connectedTo, Artist Management>
+<Streaming Platform Management, connectedTo, Mastering>
+<Tour Management, connectedTo, Instrumental Performance>
+<Tour Management, partOf, Synthesizer Programming>
diff --git a/train/mermaid/hard/mermaid_463.mmd b/train/mermaid/hard/mermaid_463.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..27c448cc08c212e8e9e180daba22b40b6b570dc3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_463.mmd
@@ -0,0 +1,134 @@
+graph TD
+    N0([start])
+    N1[Crowdfunding for Music Projects]
+    N2[Music Publishing]
+    N3{Performance}
+    N4([Music Production])
+    N5[[Music Therapy]]
+    N6[/Synthesizer Programming/]
+    N7[Tour Management]
+    N8(Recording)
+    N9{Music Festival Organization}
+    N10[(Live Sound Engineering)]
+    N11(Songwriting)
+    N12[Merchandise Sales]
+    N13[[Royalty Collection]]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph A&R
+        nest0_0(Music Theory Analysis)
+        nest0_1(Beat Making)
+        nest0_2[[Lyric Writing]]
+    end
+    subgraph Mixing
+        nest1_0([Copyright Management])
+        nest1_1[Streaming Platform Management]
+        nest1_2(Music for Film or TV or Games)
+        nest1_3[/Music Distribution/]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> |publishes| N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> |trains| nest0_2
+    N10 -.-> nest0_0
+    nest0_2 -.-> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N12 -.-> nest1_0
+    nest1_3 --> |synthesizes| N7
+    N7 -.-> S0
+    S0 --> N9
+    S0 --> N10
+    S0 --> N12
+    N10 -.-> S1
+    S1 -.-> N13
+    S1 -.-> |sells| N14
+    S1 -.-> N12
+    N8 --> M0
+    N3 --> M0
+    M0 --> N10
+    N2 -.-> M1
+    N5 --> M1
+    N1 --> M1
+    M1 -.-> N10
+    style N0 fill:#FFE88D,stroke:#FFDA4E
+    style N1 fill:#FFEBEE,stroke:#E57373
+    style N2 fill:#FBE9E7,stroke:#FF8A65
+    style N3 fill:#FBE9E7,stroke:#FF8A65
+    style N4 fill:#FFEBEE,stroke:#E57373
+    style N5 fill:#FFE88D,stroke:#FFDA4E
+    style N6 fill:#FBE9E7,stroke:#FF8A65
+    style N7 fill:#FFE88D,stroke:#FFDA4E
+    style N8 fill:#FBE9E7,stroke:#FF8A65
+    style N9 fill:#FBE9E7,stroke:#FF8A65
+    style N10 fill:#FBE9E7,stroke:#FF8A65
+    style N11 fill:#FFEBEE,stroke:#E57373
+    style N12 fill:#FBE9E7,stroke:#FF8A65
+    style N13 fill:#FFE88D,stroke:#FFDA4E
+    style N14 fill:#FFEBEE,stroke:#E57373
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S1 fill:#FFEBEE,stroke:#E57373
+    style M0 fill:#FFEBEE,stroke:#E57373
+    style M1 fill:#FFE88D,stroke:#FFDA4E
+    style nest0_0 fill:#FFEBEE,stroke:#E57373
+    style nest0_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_2 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_0 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_1 fill:#FFEBEE,stroke:#E57373
+    style nest1_2 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_3 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_463.txt b/train/mermaid/hard/mermaid_463.txt
new file mode 100644
index 0000000000000000000000000000000000000000..525782e36baa204c2a8928ce3268b49e9a67180d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_463.txt
@@ -0,0 +1,41 @@
+<Beat Making, partOf, A&R>
+<Beat Making, trains, Lyric Writing>
+<Copyright Management, connectedTo, Streaming Platform Management>
+<Copyright Management, partOf, Mixing>
+<Crowdfunding for Music Projects, connectedTo, Live Sound Engineering>
+<Crowdfunding for Music Projects, connectedTo, Music Publishing>
+<Live Sound Engineering, connectedTo, Merchandise Sales>
+<Live Sound Engineering, connectedTo, Music Theory Analysis>
+<Live Sound Engineering, connectedTo, Royalty Collection>
+<Live Sound Engineering, connectedTo, Songwriting>
+<Live Sound Engineering, sells, end>
+<Lyric Writing, connectedTo, Songwriting>
+<Lyric Writing, partOf, A&R>
+<Merchandise Sales, connectedTo, Copyright Management>
+<Merchandise Sales, connectedTo, Royalty Collection>
+<Music Distribution, partOf, Mixing>
+<Music Distribution, synthesizes, Tour Management>
+<Music Festival Organization, connectedTo, Live Sound Engineering>
+<Music Production, connectedTo, Music Therapy>
+<Music Publishing, connectedTo, Live Sound Engineering>
+<Music Publishing, connectedTo, Performance>
+<Music Theory Analysis, connectedTo, Beat Making>
+<Music Theory Analysis, partOf, A&R>
+<Music Therapy, connectedTo, Live Sound Engineering>
+<Music Therapy, connectedTo, Synthesizer Programming>
+<Music for Film or TV or Games, connectedTo, Music Distribution>
+<Music for Film or TV or Games, partOf, Mixing>
+<Performance, connectedTo, Live Sound Engineering>
+<Performance, connectedTo, Music Production>
+<Recording, connectedTo, Live Sound Engineering>
+<Recording, connectedTo, Music Festival Organization>
+<Royalty Collection, publishes, end>
+<Songwriting, connectedTo, Merchandise Sales>
+<Streaming Platform Management, connectedTo, Music for Film or TV or Games>
+<Streaming Platform Management, partOf, Mixing>
+<Synthesizer Programming, connectedTo, Tour Management>
+<Tour Management, connectedTo, Live Sound Engineering>
+<Tour Management, connectedTo, Merchandise Sales>
+<Tour Management, connectedTo, Music Festival Organization>
+<Tour Management, connectedTo, Recording>
+<start, connectedTo, Crowdfunding for Music Projects>
diff --git a/train/mermaid/hard/mermaid_466.mmd b/train/mermaid/hard/mermaid_466.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..61cdbbbcaf6fe61f05be1c378df3a0096aaf4cdb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_466.mmd
@@ -0,0 +1,130 @@
+graph LR
+    N0([start])
+    N1[[Insurance Management]]
+    N2(Film Financing)
+    N3[/Budget Management/]
+    N4(Lighting Design)
+    N5[(Film Scoring)]
+    N6[/Digital Asset Management/]
+    N7[(Distribution Strategy)]
+    N8[(Storyboarding)]
+    N9[[Marketing and Publicity]]
+    N10(Stunt Coordination)
+    N11[Remote Collaboration Tools]
+    N12([Production Accounting])
+    N13[[Set Construction]]
+    N14[Virtual Production Techniques]
+    N15{Tax Incentive Management}
+    N16([Cinematography])
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Special Effects
+        nest0_0[[Post_production Audio]]
+        nest0_1([Talent Negotiation])
+        nest0_2[(Editing)]
+    end
+    subgraph Green Production Practices
+        nest1_0[[Casting]]
+        nest1_1[Legal Compliance]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> |negotiates| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> |casts| N12
+    N12 -.-> N13
+    N13 --> |finances| N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N14 -.-> nest0_0
+    nest0_2 --> N3
+    nest1_0 --> nest1_1
+    N5 -.-> |dresses| nest1_0
+    nest1_1 --> N5
+    N8 --> S0
+    S0 -.-> N12
+    S0 -.-> |directs| N15
+    N9 -.-> S2
+    S2 -.-> N15
+    S2 -.-> N13
+    N9 -.-> M0
+    N1 --> M0
+    N5 --> M0
+    M0 --> N15
+    N9 --> M1
+    N12 -.-> M1
+    M1 -.-> N14
+    style N0 fill:#F1F8E9,stroke:#81C784
+    style N1 fill:#FCFCE7,stroke:#DCE775
+    style N2 fill:#FCFCE7,stroke:#DCE775
+    style N3 fill:#E0E6E9,stroke:#AABEC6
+    style N4 fill:#FCFCE7,stroke:#DCE775
+    style N5 fill:#E0E6E9,stroke:#AABEC6
+    style N6 fill:#FCFCE7,stroke:#DCE775
+    style N7 fill:#E0E6E9,stroke:#AABEC6
+    style N8 fill:#E0E6E9,stroke:#AABEC6
+    style N9 fill:#F1F8E9,stroke:#81C784
+    style N10 fill:#F1F8E9,stroke:#81C784
+    style N11 fill:#FCFCE7,stroke:#DCE775
+    style N12 fill:#F1F8E9,stroke:#81C784
+    style N13 fill:#F1F8E9,stroke:#81C784
+    style N14 fill:#E0E6E9,stroke:#AABEC6
+    style N15 fill:#F1F8E9,stroke:#81C784
+    style N16 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#F1F8E9,stroke:#81C784
+    style S2 fill:#E0E6E9,stroke:#AABEC6
+    style M0 fill:#E0E6E9,stroke:#AABEC6
+    style M1 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_0 fill:#FCFCE7,stroke:#DCE775
+    style nest0_1 fill:#FCFCE7,stroke:#DCE775
+    style nest0_2 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_0 fill:#FCFCE7,stroke:#DCE775
+    style nest1_1 fill:#FCFCE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#AABEC6,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_467.txt b/train/mermaid/hard/mermaid_467.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e44f024a19c528a719db0cbaae881cadadc3c44d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_467.txt
@@ -0,0 +1,42 @@
+<Casting, connectedTo, Script Development>
+<Cinematography, connectedTo, Screenwriting Workshops>
+<Color Grading, connectedTo, Directing>
+<Color Grading, partOf, Art Direction>
+<Costume Design, connectedTo, Special Effects>
+<Costume Design, partOf, Stunt Coordination>
+<Crew Management, connectedTo, Legal Compliance>
+<Crew Management, connectedTo, Marketing and Publicity>
+<Crew Management, connectedTo, Set Construction>
+<Digital Asset Management, connectedTo, Prop Management>
+<Directing, partOf, Art Direction>
+<Directing, post_produces, Film Festival Submission>
+<Editing, connectedTo, Casting>
+<Film Festival Submission, connectedTo, Prop Management>
+<Film Festival Submission, partOf, Art Direction>
+<Green Production Practices, builds, Costume Design>
+<Green Production Practices, partOf, Stunt Coordination>
+<Insurance Management, connectedTo, Casting>
+<Insurance Management, connectedTo, Cinematography>
+<Insurance Management, connectedTo, Digital Asset Management>
+<Insurance Management, connectedTo, Lighting Design>
+<Insurance Management, connectedTo, Virtual Production Techniques>
+<Legal Compliance, connectedTo, Digital Asset Management>
+<Legal Compliance, connectedTo, Set Construction>
+<Lighting Design, connectedTo, Editing>
+<Marketing and Publicity, connectedTo, Digital Asset Management>
+<Marketing and Publicity, connectedTo, Set Construction>
+<Marketing and Publicity, dresses, Legal Compliance>
+<Marketing and Publicity, finances, Production Scheduling>
+<Production Scheduling, connectedTo, Digital Asset Management>
+<Production Scheduling, connectedTo, Remote Collaboration Tools>
+<Production Scheduling, uploads, Legal Compliance>
+<Prop Management, connectedTo, Virtual Production Techniques>
+<Remote Collaboration Tools, connectedTo, Green Production Practices>
+<Remote Collaboration Tools, partOf, Stunt Coordination>
+<Screenwriting Workshops, connectedTo, Color Grading>
+<Screenwriting Workshops, protects, Digital Asset Management>
+<Script Development, connectedTo, Production Accounting>
+<Set Construction, connectedTo, Insurance Management>
+<Special Effects, connectedTo, Production Accounting>
+<Special Effects, partOf, Stunt Coordination>
+<Virtual Production Techniques, connectedTo, Lighting Design>
diff --git a/train/mermaid/hard/mermaid_468.mmd b/train/mermaid/hard/mermaid_468.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f6f88a95de8dca74f3d1728ffee36347a738fd89
--- /dev/null
+++ b/train/mermaid/hard/mermaid_468.mmd
@@ -0,0 +1,132 @@
+graph LR
+    N0([start])
+    N1[Distribution Strategy]
+    N2[(Green Production Practices)]
+    N3[[Casting]]
+    N4[(Post_production Audio)]
+    N5{Legal Compliance}
+    N6([Prop Management])
+    N7[Tax Incentive Management]
+    N8([Editing])
+    N9{Directing}
+    N10(Insurance Management)
+    N11{Film Festival Submission}
+    N12[Set Construction]
+    N13[/Special Effects/]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Film Scoring
+        nest0_0[(Makeup and Hair Design)]
+        nest0_1[(Remote Collaboration Tools)]
+    end
+    subgraph Art Direction
+        nest1_0[(Virtual Production Techniques)]
+        nest1_1(Script Development)
+        nest1_2(Archiving and Preservation)
+        nest1_3[[Sound Recording]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> |secures| N13
+    nest0_0 --> nest0_1
+    N6 -.-> |distributes| nest0_0
+    nest0_1 -.-> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N5 -.-> nest1_0
+    nest1_3 --> N10
+    N2 --> S0
+    S0 --> N13
+    S0 -.-> N11
+    S0 -.-> N12
+    N9 --> S1
+    S1 --> N12
+    S1 --> N11
+    N1 --> M0
+    N0 -.-> M0
+    M0 -.-> N4
+    N2 --> M1
+    N1 --> M1
+    M1 -.-> N4
+    N11 --> |protects| M2
+    N7 -.-> M2
+    N0 --> M2
+    M2 --> N13
+    style N0 fill:#FFFCE6,stroke:#FFF9AE
+    style N1 fill:#FFFCE6,stroke:#FFF9AE
+    style N2 fill:#FFFCE6,stroke:#FFF9AE
+    style N3 fill:#B2EBF2,stroke:#00BCD4
+    style N4 fill:#FFFCE6,stroke:#FFF9AE
+    style N5 fill:#FFFCE6,stroke:#FFF9AE
+    style N6 fill:#B2EBF2,stroke:#00BCD4
+    style N7 fill:#B2EBF2,stroke:#00BCD4
+    style N8 fill:#FFDAB9,stroke:#FFC085
+    style N9 fill:#FFDAB9,stroke:#FFC085
+    style N10 fill:#FFFCE6,stroke:#FFF9AE
+    style N11 fill:#B2EBF2,stroke:#00BCD4
+    style N12 fill:#B2EBF2,stroke:#00BCD4
+    style N13 fill:#FFDAB9,stroke:#FFC085
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#FFDAB9,stroke:#FFC085
+    style M0 fill:#FFDAB9,stroke:#FFC085
+    style M1 fill:#B2EBF2,stroke:#00BCD4
+    style M2 fill:#FFDAB9,stroke:#FFC085
+    style nest0_0 fill:#FFDAB9,stroke:#FFC085
+    style nest0_1 fill:#FFDAB9,stroke:#FFC085
+    style nest1_0 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_1 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_2 fill:#FFDAB9,stroke:#FFC085
+    style nest1_3 fill:#FFDAB9,stroke:#FFC085
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_468.txt b/train/mermaid/hard/mermaid_468.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1e4a276b1a9bdedc19251bab30b0735327561a66
--- /dev/null
+++ b/train/mermaid/hard/mermaid_468.txt
@@ -0,0 +1,38 @@
+<Archiving and Preservation, connectedTo, Sound Recording>
+<Archiving and Preservation, partOf, Art Direction>
+<Casting, connectedTo, Post_production Audio>
+<Directing, connectedTo, Film Festival Submission>
+<Directing, connectedTo, Insurance Management>
+<Directing, connectedTo, Set Construction>
+<Distribution Strategy, connectedTo, Green Production Practices>
+<Distribution Strategy, connectedTo, Post_production Audio>
+<Editing, connectedTo, Directing>
+<Film Festival Submission, connectedTo, Set Construction>
+<Film Festival Submission, protects, Special Effects>
+<Green Production Practices, connectedTo, Casting>
+<Green Production Practices, connectedTo, Film Festival Submission>
+<Green Production Practices, connectedTo, Post_production Audio>
+<Green Production Practices, connectedTo, Set Construction>
+<Green Production Practices, connectedTo, Special Effects>
+<Insurance Management, connectedTo, Film Festival Submission>
+<Legal Compliance, connectedTo, Prop Management>
+<Legal Compliance, connectedTo, Virtual Production Techniques>
+<Makeup and Hair Design, connectedTo, Remote Collaboration Tools>
+<Makeup and Hair Design, partOf, Film Scoring>
+<Post_production Audio, connectedTo, Legal Compliance>
+<Prop Management, connectedTo, Tax Incentive Management>
+<Prop Management, distributes, Makeup and Hair Design>
+<Remote Collaboration Tools, connectedTo, Tax Incentive Management>
+<Remote Collaboration Tools, partOf, Film Scoring>
+<Script Development, connectedTo, Archiving and Preservation>
+<Script Development, partOf, Art Direction>
+<Set Construction, secures, Special Effects>
+<Sound Recording, connectedTo, Insurance Management>
+<Sound Recording, partOf, Art Direction>
+<Tax Incentive Management, connectedTo, Editing>
+<Tax Incentive Management, connectedTo, Special Effects>
+<Virtual Production Techniques, connectedTo, Script Development>
+<Virtual Production Techniques, partOf, Art Direction>
+<start, connectedTo, Distribution Strategy>
+<start, connectedTo, Post_production Audio>
+<start, connectedTo, Special Effects>
diff --git a/train/mermaid/hard/mermaid_469.mmd b/train/mermaid/hard/mermaid_469.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..92beed817bf1507eb2c657392e97910f584acb26
--- /dev/null
+++ b/train/mermaid/hard/mermaid_469.mmd
@@ -0,0 +1,100 @@
+graph LR
+    N0([start])
+    N1(Color Grading)
+    N2[Script Development]
+    N3[(Makeup and Hair Design)]
+    N4{Cinematography}
+    N5[Location Scouting]
+    N6([Set Construction])
+    N7[/Budget Management/]
+    N8[Screenwriting Workshops]
+    N9[/Talent Negotiation/]
+    N10[[Tax Incentive Management]]
+    N11[Marketing and Publicity]
+    N12[Crew Management]
+    N13(Distribution Strategy)
+    N14[[Storyboarding]]
+    N15(Remote Collaboration Tools)
+    N16(Film Festival Submission)
+    N17([end])
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Virtual Production Techniques
+        nest0_0(Film Financing)
+        nest0_1(Sound Recording)
+    end
+    subgraph Directing
+        nest1_0[Lighting Design]
+        nest1_1[(Audience Research)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> |no| N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 -.-> |yes| N17
+    nest0_0 -.-> nest0_1
+    N3 --> nest0_0
+    nest0_1 --> N7
+    nest1_0 -.-> |no| nest1_1
+    N11 -.-> nest1_0
+    nest1_1 --> N1
+    N4 -.-> S1
+    S1 --> N16
+    S1 -.-> N7
+    N0 --> M0
+    N2 --> |yes| M0
+    M0 -.-> N4
+    N1 --> |yes| M1
+    N0 --> M1
+    M1 -.-> N3
+    N7 -.-> N10
+    style S1 fill:#FFF8E1,stroke:#FFD54F
+    style M0 fill:#FFF8E1,stroke:#FFD54F
+    style M1 fill:#C8EDFF,stroke:#82DAFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFD54F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_472.txt b/train/mermaid/hard/mermaid_472.txt
new file mode 100644
index 0000000000000000000000000000000000000000..970dc2e60901f82ded6808bc1edecd424efea124
--- /dev/null
+++ b/train/mermaid/hard/mermaid_472.txt
@@ -0,0 +1,37 @@
+<Archiving and Preservation, connectedTo, Directing>
+<Archiving and Preservation, partOf, Tax Incentive Management>
+<Art Direction, connectedTo, Color Grading>
+<Art Direction, connectedTo, Distribution Strategy>
+<Art Direction, connectedTo, Makeup and Hair Design>
+<Art Direction, connectedTo, Talent Negotiation>
+<Audience Research, connectedTo, Special Effects>
+<Budget Management, connectedTo, Audience Research>
+<Color Grading, connectedTo, Storyboarding>
+<Costume Design, connectedTo, Set Construction>
+<Directing, connectedTo, Legal Compliance>
+<Directing, partOf, Tax Incentive Management>
+<Distribution Strategy, connectedTo, Legal Compliance>
+<Distribution Strategy, connectedTo, Special Effects>
+<Legal Compliance, connectedTo, Prop Management>
+<Makeup and Hair Design, connectedTo, Screenwriting Workshops>
+<Prop Management, connectedTo, Makeup and Hair Design>
+<Prop Management, connectedTo, Special Effects>
+<Prop Management, connectedTo, Visual Effects>
+<Remote Collaboration Tools, connectedTo, Archiving and Preservation>
+<Remote Collaboration Tools, partOf, Tax Incentive Management>
+<Screenwriting Workshops, connectedTo, Budget Management>
+<Screenwriting Workshops, connectedTo, Special Effects>
+<Set Construction, connectedTo, Art Direction>
+<Set Construction, connectedTo, Audience Research>
+<Set Construction, connectedTo, Distribution Strategy>
+<Set Construction, connectedTo, Makeup and Hair Design>
+<Special Effects, connectedTo, Color Grading>
+<Special Effects, connectedTo, Lighting Design>
+<Special Effects, connectedTo, Storyboarding>
+<Storyboarding, connectedTo, Lighting Design>
+<Stunt Coordination, connectedTo, Screenwriting Workshops>
+<Stunt Coordination, partOf, Location Scouting>
+<Talent Negotiation, connectedTo, Remote Collaboration Tools>
+<Talent Negotiation, partOf, Tax Incentive Management>
+<Visual Effects, connectedTo, Stunt Coordination>
+<Visual Effects, partOf, Location Scouting>
diff --git a/train/mermaid/hard/mermaid_473.txt b/train/mermaid/hard/mermaid_473.txt
new file mode 100644
index 0000000000000000000000000000000000000000..78ccadc16de4ecf9eae55374f8b8ce9ed8901622
--- /dev/null
+++ b/train/mermaid/hard/mermaid_473.txt
@@ -0,0 +1,30 @@
+<Audience Analysis, connectedTo, E_book Writing>
+<Branding, moderates, Fact_Checking>
+<Branding, partOf, User_Generated Content Curation>
+<Content Management System Operation, connectedTo, Photography>
+<Content Management System Operation, connectedTo, Social Media Post Creation>
+<Drafting Content, connectedTo, Graphic Design>
+<Drafting Content, partOf, Editing and Proofreading>
+<E_book Writing, connectedTo, Social Media Post Creation>
+<E_book Writing, connectedTo, Transcribing Audio or Video>
+<Fact_Checking, partOf, User_Generated Content Curation>
+<Fact_Checking, promotes, Social Media Post Creation>
+<Graphic Design, partOf, Editing and Proofreading>
+<Graphic Design, photographs, Social Media Post Creation>
+<Influencer Collaboration, connectedTo, Newsletter Creation>
+<Influencer Collaboration, shares, Social Media Post Creation>
+<Live Streaming Content, edits, Drafting Content>
+<Live Streaming Content, partOf, Editing and Proofreading>
+<Newsletter Creation, connectedTo, Content Management System Operation>
+<Newsletter Creation, connectedTo, Social Media Post Creation>
+<Photography, connectedTo, Social Media Post Creation>
+<Photography, connectedTo, Webinar Hosting>
+<Podcast Production, connectedTo, Live Streaming Content>
+<Podcast Production, partOf, Editing and Proofreading>
+<Social Media Post Creation, connectedTo, Audience Engagement>
+<Transcribing Audio or Video, connectedTo, Branding>
+<Transcribing Audio or Video, connectedTo, Influencer Collaboration>
+<Transcribing Audio or Video, connectedTo, Newsletter Creation>
+<Transcribing Audio or Video, connectedTo, Podcast Production>
+<Transcribing Audio or Video, connectedTo, Webinar Hosting>
+<Webinar Hosting, connectedTo, Social Media Post Creation>
diff --git a/train/mermaid/hard/mermaid_474.mmd b/train/mermaid/hard/mermaid_474.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fecf98f999c6b16041e3f579cf554076d667aea9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_474.mmd
@@ -0,0 +1,116 @@
+graph BT
+    N0([Social Media Post Creation])
+    N1(Live Streaming Content)
+    N2[User_Generated Content Curation]
+    N3[[Branding]]
+    N4{Videography}
+    N5[/Audio Recording/]
+    N6(Ideation and Brainstorming)
+    N7[(Drafting Content)]
+    N8[(Publishing)]
+    N9(Content Localization)
+    N10(Keyword Research)
+    N11[(Content Repurposing)]
+    N12([Blog Post Writing])
+    N13[Call to Action Design]
+    N14[Fact_Checking]
+    N15([Podcast Production])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Plagiarism Checking
+        nest0_0([Monetization Strategy])
+        nest0_1[(Webinar Hosting)]
+    end
+    subgraph Content Management System Operation
+        nest1_0[Interactive Content Development]
+        nest1_1(Audience Engagement)
+    end
+    N0 --> N1
+    N1 --> |personalizes| N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> |ideates| N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    N11 --> nest0_0
+    nest0_1 --> N11
+    nest1_0 -.-> nest1_1
+    N9 --> nest1_0
+    nest1_1 -.-> N8
+    N0 --> S0
+    S0 -.-> N2
+    S0 --> N15
+    N2 --> S1
+    S1 -.-> N10
+    S1 -.-> N7
+    S1 --> N12
+    N0 -.-> M1
+    N1 -.-> |creates| M1
+    N5 -.-> |moderates| M1
+    M1 -.-> N10
+    style N0 fill:#F1F8E9,stroke:#81C784
+    style N1 fill:#F1F8E9,stroke:#81C784
+    style N2 fill:#E0E6E9,stroke:#AABEC6
+    style N3 fill:#E0E6E9,stroke:#AABEC6
+    style N4 fill:#F3E5F5,stroke:#BA68C8
+    style N5 fill:#E0E6E9,stroke:#AABEC6
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#E0E6E9,stroke:#AABEC6
+    style N8 fill:#E0E6E9,stroke:#AABEC6
+    style N9 fill:#F1F8E9,stroke:#81C784
+    style N10 fill:#F3E5F5,stroke:#BA68C8
+    style N11 fill:#E0E6E9,stroke:#AABEC6
+    style N12 fill:#E0E6E9,stroke:#AABEC6
+    style N13 fill:#F3E5F5,stroke:#BA68C8
+    style N14 fill:#E0E6E9,stroke:#AABEC6
+    style N15 fill:#E0E6E9,stroke:#AABEC6
+    style S0 fill:#E0E6E9,stroke:#AABEC6
+    style S1 fill:#E0E6E9,stroke:#AABEC6
+    style M1 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_0 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_0 fill:#E0E6E9,stroke:#AABEC6
+    style nest1_1 fill:#E0E6E9,stroke:#AABEC6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BA68C8,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_474.txt b/train/mermaid/hard/mermaid_474.txt
new file mode 100644
index 0000000000000000000000000000000000000000..29d0209406252ee7460d8837b9630b987621d8a7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_474.txt
@@ -0,0 +1,33 @@
+<Audience Engagement, connectedTo, Publishing>
+<Audience Engagement, partOf, Content Management System Operation>
+<Audio Recording, connectedTo, Ideation and Brainstorming>
+<Audio Recording, moderates, Keyword Research>
+<Blog Post Writing, connectedTo, Call to Action Design>
+<Branding, connectedTo, Videography>
+<Call to Action Design, ideates, Fact_Checking>
+<Content Localization, connectedTo, Interactive Content Development>
+<Content Localization, connectedTo, Keyword Research>
+<Content Repurposing, connectedTo, Blog Post Writing>
+<Content Repurposing, connectedTo, Monetization Strategy>
+<Drafting Content, connectedTo, Publishing>
+<Fact_Checking, connectedTo, Podcast Production>
+<Ideation and Brainstorming, connectedTo, Drafting Content>
+<Interactive Content Development, connectedTo, Audience Engagement>
+<Interactive Content Development, partOf, Content Management System Operation>
+<Keyword Research, connectedTo, Content Repurposing>
+<Live Streaming Content, creates, Keyword Research>
+<Live Streaming Content, personalizes, User_Generated Content Curation>
+<Monetization Strategy, connectedTo, Webinar Hosting>
+<Monetization Strategy, partOf, Plagiarism Checking>
+<Publishing, connectedTo, Content Localization>
+<Social Media Post Creation, connectedTo, Keyword Research>
+<Social Media Post Creation, connectedTo, Live Streaming Content>
+<Social Media Post Creation, connectedTo, Podcast Production>
+<Social Media Post Creation, connectedTo, User_Generated Content Curation>
+<User_Generated Content Curation, connectedTo, Blog Post Writing>
+<User_Generated Content Curation, connectedTo, Branding>
+<User_Generated Content Curation, connectedTo, Drafting Content>
+<User_Generated Content Curation, connectedTo, Keyword Research>
+<Videography, connectedTo, Audio Recording>
+<Webinar Hosting, connectedTo, Content Repurposing>
+<Webinar Hosting, partOf, Plagiarism Checking>
diff --git a/train/mermaid/hard/mermaid_475.txt b/train/mermaid/hard/mermaid_475.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9beba238e689ffb8560b2e6c8e5dddc6c954e2fe
--- /dev/null
+++ b/train/mermaid/hard/mermaid_475.txt
@@ -0,0 +1,37 @@
+<Audience Analysis, connectedTo, Newsletter Creation>
+<Audience Analysis, supports, Social Media Post Creation>
+<Audience Engagement, connectedTo, Audience Analysis>
+<Audience Engagement, connectedTo, Social Media Post Creation>
+<Audience Engagement, promotes, Copywriting>
+<Blog Post Writing, connectedTo, Call to Action Design>
+<Blog Post Writing, partOf, Animation>
+<Call to Action Design, connectedTo, Photography>
+<Call to Action Design, partOf, Animation>
+<Content Localization, connectedTo, Keyword Research>
+<Copywriting, connectedTo, Blog Post Writing>
+<Copywriting, connectedTo, Interview Conduct>
+<Copywriting, connectedTo, Videography>
+<Distribution Planning, connectedTo, Social Media Post Creation>
+<Distribution Planning, partOf, Content Management System Operation>
+<Fact_Checking, connectedTo, Content Localization>
+<Influencer Collaboration, connectedTo, Distribution Planning>
+<Influencer Collaboration, partOf, Content Management System Operation>
+<Interview Conduct, connectedTo, E_book Writing>
+<Keyword Research, connectedTo, Copywriting>
+<Keyword Research, connectedTo, E_book Writing>
+<Keyword Research, personalizes, Research and Outline>
+<Monetization Strategy, connectedTo, Audience Engagement>
+<Newsletter Creation, connectedTo, Plagiarism Checking>
+<Photography, connectedTo, E_book Writing>
+<Photography, partOf, Animation>
+<Plagiarism Checking, connectedTo, Social Media Post Creation>
+<Research and Outline, connectedTo, Copywriting>
+<Social Media Post Creation, connectedTo, Content Localization>
+<Social Media Post Creation, connectedTo, Fact_Checking>
+<Social Media Post Creation, connectedTo, Interview Conduct>
+<Social Media Post Creation, connectedTo, User_Generated Content Curation>
+<Transcribing Audio or Video, automates, Monetization Strategy>
+<User_Generated Content Curation, connectedTo, Copywriting>
+<User_Generated Content Curation, connectedTo, Fact_Checking>
+<Videography, connectedTo, Influencer Collaboration>
+<Videography, partOf, Content Management System Operation>
diff --git a/train/mermaid/hard/mermaid_478.mmd b/train/mermaid/hard/mermaid_478.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..18a490858f125031447dfcc20058f2c2e8cd29b3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_478.mmd
@@ -0,0 +1,110 @@
+graph RL
+    N0([Interview Conduct])
+    N1{Monetization Strategy}
+    N2[[Video Scripting]]
+    N3[(Call to Action Design)]
+    N4[Audio Recording]
+    N5[Keyword Research]
+    N6[/Content Management System Operation/]
+    N7([Editing and Proofreading])
+    N8[Newsletter Creation]
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Branding
+        nest0_0[Transcribing Audio or Video]
+        nest0_1[/Ideation and Brainstorming/]
+        nest0_2[(Live Streaming Content)]
+        nest0_3(Graphic Design)
+    end
+    subgraph Content Strategy Development
+        nest1_0[[Publishing]]
+        nest1_1[(Search Engine Optimization)]
+        nest1_2[(Blog Post Writing)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> |ideates| N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> |tracks| N8
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 --> nest0_0
+    nest0_3 -.-> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N3 --> |illustrates| nest1_0
+    nest1_2 -.-> |records| N1
+    N2 --> S0
+    S0 --> |podcasts| N4
+    S0 -.-> N8
+    N0 -.-> S2
+    S2 -.-> N4
+    S2 -.-> N8
+    N2 -.-> M0
+    N3 -.-> |collaborates| M0
+    N1 --> M0
+    M0 --> N5
+    N3 -.-> M1
+    N2 --> M1
+    N5 -.-> M1
+    N6 -.-> M1
+    M1 --> N8
+    style N0 fill:#D0EFEE,stroke:#73C6BC
+    style N1 fill:#F8FDD3,stroke:#D3EB9F
+    style N2 fill:#F0F0F0,stroke:#D2D2D2
+    style N3 fill:#F0F0F0,stroke:#D2D2D2
+    style N4 fill:#F8FDD3,stroke:#D3EB9F
+    style N5 fill:#D0EFEE,stroke:#73C6BC
+    style N6 fill:#F0F0F0,stroke:#D2D2D2
+    style N7 fill:#D0EFEE,stroke:#73C6BC
+    style N8 fill:#F0F0F0,stroke:#D2D2D2
+    style S0 fill:#D0EFEE,stroke:#73C6BC
+    style S2 fill:#F8FDD3,stroke:#D3EB9F
+    style M0 fill:#D0EFEE,stroke:#73C6BC
+    style M1 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest0_1 fill:#F8FDD3,stroke:#D3EB9F
+    style nest0_2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_3 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_1 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_2 fill:#F8FDD3,stroke:#D3EB9F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D2D2D2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_478.txt b/train/mermaid/hard/mermaid_478.txt
new file mode 100644
index 0000000000000000000000000000000000000000..42d674be6c06680afc51c4aa25a82812c7c1b015
--- /dev/null
+++ b/train/mermaid/hard/mermaid_478.txt
@@ -0,0 +1,34 @@
+<Audio Recording, connectedTo, Keyword Research>
+<Blog Post Writing, partOf, Content Strategy Development>
+<Blog Post Writing, records, Monetization Strategy>
+<Call to Action Design, collaborates, Keyword Research>
+<Call to Action Design, connectedTo, Audio Recording>
+<Call to Action Design, connectedTo, Newsletter Creation>
+<Call to Action Design, illustrates, Publishing>
+<Content Management System Operation, connectedTo, Editing and Proofreading>
+<Content Management System Operation, connectedTo, Newsletter Creation>
+<Editing and Proofreading, tracks, Newsletter Creation>
+<Graphic Design, connectedTo, Video Scripting>
+<Graphic Design, partOf, Branding>
+<Ideation and Brainstorming, connectedTo, Live Streaming Content>
+<Ideation and Brainstorming, partOf, Branding>
+<Interview Conduct, connectedTo, Audio Recording>
+<Interview Conduct, connectedTo, Monetization Strategy>
+<Interview Conduct, connectedTo, Newsletter Creation>
+<Keyword Research, connectedTo, Content Management System Operation>
+<Keyword Research, connectedTo, Newsletter Creation>
+<Keyword Research, connectedTo, Transcribing Audio or Video>
+<Live Streaming Content, connectedTo, Graphic Design>
+<Live Streaming Content, partOf, Branding>
+<Monetization Strategy, connectedTo, Keyword Research>
+<Monetization Strategy, connectedTo, Video Scripting>
+<Publishing, connectedTo, Search Engine Optimization>
+<Publishing, partOf, Content Strategy Development>
+<Search Engine Optimization, connectedTo, Blog Post Writing>
+<Search Engine Optimization, partOf, Content Strategy Development>
+<Transcribing Audio or Video, connectedTo, Ideation and Brainstorming>
+<Transcribing Audio or Video, partOf, Branding>
+<Video Scripting, connectedTo, Keyword Research>
+<Video Scripting, connectedTo, Newsletter Creation>
+<Video Scripting, ideates, Call to Action Design>
+<Video Scripting, podcasts, Audio Recording>
diff --git a/train/mermaid/hard/mermaid_479.txt b/train/mermaid/hard/mermaid_479.txt
new file mode 100644
index 0000000000000000000000000000000000000000..94f94de1dda5ffafc963658755dab8ec205b34de
--- /dev/null
+++ b/train/mermaid/hard/mermaid_479.txt
@@ -0,0 +1,43 @@
+<Animation, connectedTo, Videography>
+<Audience Engagement, connectedTo, Blog Post Writing>
+<Blog Post Writing, connectedTo, User_Generated Content Curation>
+<Branding, connectedTo, Monetization Strategy>
+<Distribution Planning, connectedTo, Animation>
+<Distribution Planning, connectedTo, Interactive Content Development>
+<Drafting Content, connectedTo, Audience Engagement>
+<Drafting Content, connectedTo, Blog Post Writing>
+<Drafting Content, connectedTo, User_Generated Content Curation>
+<E_book Writing, connectedTo, Audience Engagement>
+<E_book Writing, connectedTo, Branding>
+<E_book Writing, connectedTo, Interactive Content Development>
+<Fact_Checking, animates, Blog Post Writing>
+<Fact_Checking, connectedTo, Branding>
+<Fact_Checking, connectedTo, E_book Writing>
+<Fact_Checking, connectedTo, Ideation and Brainstorming>
+<Fact_Checking, connectedTo, Interactive Content Development>
+<Fact_Checking, connectedTo, Monetization Strategy>
+<Ideation and Brainstorming, connectedTo, Blog Post Writing>
+<Ideation and Brainstorming, connectedTo, E_book Writing>
+<Influencer Collaboration, connectedTo, Fact_Checking>
+<Influencer Collaboration, partOf, Editing and Proofreading>
+<Interactive Content Development, connectedTo, Audience Engagement>
+<Interactive Content Development, connectedTo, Blog Post Writing>
+<Interactive Content Development, connectedTo, Drafting Content>
+<Interactive Content Development, connectedTo, Newsletter Creation>
+<Interactive Content Development, connectedTo, User_Generated Content Curation>
+<Interactive Content Development, connectedTo, end>
+<Keyword Research, connectedTo, Influencer Collaboration>
+<Keyword Research, partOf, Editing and Proofreading>
+<Monetization Strategy, connectedTo, Blog Post Writing>
+<Monetization Strategy, connectedTo, Interactive Content Development>
+<Newsletter Creation, connectedTo, Photography>
+<Newsletter Creation, partOf, Live Streaming Content>
+<Photography, connectedTo, Social Media Post Creation>
+<Photography, partOf, Live Streaming Content>
+<Social Media Post Creation, connectedTo, Audience Engagement>
+<Social Media Post Creation, partOf, Live Streaming Content>
+<User_Generated Content Curation, connectedTo, Keyword Research>
+<User_Generated Content Curation, connectedTo, end>
+<Videography, connectedTo, Audience Engagement>
+<Videography, connectedTo, Webinar Hosting>
+<Webinar Hosting, connectedTo, Fact_Checking>
diff --git a/train/mermaid/hard/mermaid_48.mmd b/train/mermaid/hard/mermaid_48.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..77ce60df9aebef0d23de7cfa32bf7d7ae1e6e326
--- /dev/null
+++ b/train/mermaid/hard/mermaid_48.mmd
@@ -0,0 +1,99 @@
+graph TD
+    N0([start])
+    N1{Passenger Boarding Pass Issuance}
+    N2(Security Check)
+    N3(Platform Assignment)
+    N4[/Delay Alert/]
+    N5(Cargo Loading)
+    N6(Public Transport Ticketing)
+    N7[(Location Input)]
+    N8[Vehicle Tracking]
+    N9[/Luggage Handling/]
+    N10[(Accident Reconstruction)]
+    N11[/Train Dispatch/]
+    N12(Arrival)
+    N13{Boarding}
+    N14[[Customs Clearance]]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Road Network Management
+        nest0_0[Electric Vehicle Charging]
+        nest0_1{Fare Calculation}
+        nest0_2[(Intermodal Transfer)]
+    end
+    subgraph Schedule Generation
+        nest1_0(Traffic Monitoring)
+        nest1_1[Load Balancing]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> |yes| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> |no| N10
+    N10 --> |no| N11
+    N11 -.-> |yes| N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N8 --> nest0_0
+    nest0_2 --> N11
+    nest1_0 --> nest1_1
+    N4 --> nest1_0
+    nest1_1 --> N5
+    N6 -.-> S0
+    S0 -.-> N10
+    S0 --> N9
+    S0 -.-> |no| N14
+    N11 -.-> S1
+    S1 -.-> N14
+    S1 --> N15
+    N1 -.-> M0
+    N0 --> M0
+    N2 -.-> M0
+    M0 --> N4
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#F5F5F5,stroke:#BDBDBD
+    style M0 fill:#F0F4C3,stroke:#AED581
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#8C9EFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_480.mmd b/train/mermaid/hard/mermaid_480.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3a821a1a3054816c0cdfac48bf621103f7e2dd0c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_480.mmd
@@ -0,0 +1,154 @@
+graph LR
+    N0([start])
+    N1[/Fact_Checking/]
+    N2{Drafting Content}
+    N3(Audience Engagement)
+    N4[(Copywriting)]
+    N5[Research and Outline]
+    N6(Search Engine Optimization)
+    N7{User_Generated Content Curation}
+    N8[Keyword Research]
+    N9([Call to Action Design])
+    N10[/Live Streaming Content/]
+    N11(Videography)
+    N12[/Podcast Production/]
+    N13(Editing and Proofreading)
+    N14(Interview Conduct)
+    N15(Audience Analysis)
+    N16[/Distribution Planning/]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Video Scripting
+        nest0_0[Animation]
+        nest0_1{Plagiarism Checking}
+        nest0_2{Audio Recording}
+    end
+    subgraph Social Media Post Creation
+        nest1_0[Blog Post Writing]
+        nest1_1[Influencer Collaboration]
+        nest1_2[(Newsletter Creation)]
+    end
+    N0 -.-> N1
+    N1 --> |promotes| N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> |collaborates| N8
+    N8 --> N9
+    N9 -.-> |automates| N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> |curates| N17
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N7 --> nest0_0
+    nest0_2 -.-> N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N15 --> nest1_0
+    nest1_2 --> N14
+    N5 -.-> S0
+    S0 --> N8
+    S0 -.-> N9
+    S0 -.-> N7
+    S0 --> N12
+    N6 --> S1
+    S1 -.-> N13
+    S1 -.-> N16
+    S1 -.-> N12
+    N2 --> S2
+    S2 -.-> N9
+    S2 -.-> N10
+    N13 -.-> M0
+    N12 -.-> M0
+    N5 -.-> M0
+    M0 --> N15
+    N5 -.-> M1
+    N0 -.-> M1
+    N3 -.-> M1
+    M1 --> N9
+    style N0 fill:#E1F5FE,stroke:#4FC3F7
+    style N1 fill:#CFD8DC,stroke:#607D8B
+    style N2 fill:#CFD8DC,stroke:#607D8B
+    style N3 fill:#D3D7EB,stroke:#8C9EFF
+    style N4 fill:#CFD8DC,stroke:#607D8B
+    style N5 fill:#E1F5FE,stroke:#4FC3F7
+    style N6 fill:#E1F5FE,stroke:#4FC3F7
+    style N7 fill:#E1F5FE,stroke:#4FC3F7
+    style N8 fill:#D3D7EB,stroke:#8C9EFF
+    style N9 fill:#D3D7EB,stroke:#8C9EFF
+    style N10 fill:#CFD8DC,stroke:#607D8B
+    style N11 fill:#E1F5FE,stroke:#4FC3F7
+    style N12 fill:#D3D7EB,stroke:#8C9EFF
+    style N13 fill:#D3D7EB,stroke:#8C9EFF
+    style N14 fill:#D3D7EB,stroke:#8C9EFF
+    style N15 fill:#CFD8DC,stroke:#607D8B
+    style N16 fill:#D3D7EB,stroke:#8C9EFF
+    style N17 fill:#E1F5FE,stroke:#4FC3F7
+    style S0 fill:#D3D7EB,stroke:#8C9EFF
+    style S1 fill:#D3D7EB,stroke:#8C9EFF
+    style S2 fill:#E1F5FE,stroke:#4FC3F7
+    style M0 fill:#E1F5FE,stroke:#4FC3F7
+    style M1 fill:#CFD8DC,stroke:#607D8B
+    style nest0_0 fill:#CFD8DC,stroke:#607D8B
+    style nest0_1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest0_2 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_0 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_1 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_2 fill:#CFD8DC,stroke:#607D8B
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#607D8B,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_480.txt b/train/mermaid/hard/mermaid_480.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7c4523d5a385245d85010fa028cc265d3c4eea79
--- /dev/null
+++ b/train/mermaid/hard/mermaid_480.txt
@@ -0,0 +1,45 @@
+<Animation, connectedTo, Plagiarism Checking>
+<Animation, partOf, Video Scripting>
+<Audience Analysis, connectedTo, Blog Post Writing>
+<Audience Analysis, connectedTo, Distribution Planning>
+<Audience Engagement, connectedTo, Call to Action Design>
+<Audience Engagement, connectedTo, Copywriting>
+<Audio Recording, connectedTo, Live Streaming Content>
+<Audio Recording, partOf, Video Scripting>
+<Blog Post Writing, connectedTo, Influencer Collaboration>
+<Blog Post Writing, partOf, Social Media Post Creation>
+<Call to Action Design, automates, Live Streaming Content>
+<Copywriting, connectedTo, Research and Outline>
+<Distribution Planning, curates, end>
+<Drafting Content, connectedTo, Audience Engagement>
+<Drafting Content, connectedTo, Call to Action Design>
+<Drafting Content, connectedTo, Live Streaming Content>
+<Editing and Proofreading, connectedTo, Audience Analysis>
+<Editing and Proofreading, connectedTo, Interview Conduct>
+<Fact_Checking, promotes, Drafting Content>
+<Influencer Collaboration, connectedTo, Newsletter Creation>
+<Influencer Collaboration, partOf, Social Media Post Creation>
+<Interview Conduct, connectedTo, Audience Analysis>
+<Keyword Research, connectedTo, Call to Action Design>
+<Live Streaming Content, connectedTo, Videography>
+<Newsletter Creation, connectedTo, Interview Conduct>
+<Newsletter Creation, partOf, Social Media Post Creation>
+<Plagiarism Checking, connectedTo, Audio Recording>
+<Plagiarism Checking, partOf, Video Scripting>
+<Podcast Production, connectedTo, Audience Analysis>
+<Podcast Production, connectedTo, Editing and Proofreading>
+<Research and Outline, connectedTo, Audience Analysis>
+<Research and Outline, connectedTo, Call to Action Design>
+<Research and Outline, connectedTo, Keyword Research>
+<Research and Outline, connectedTo, Podcast Production>
+<Research and Outline, connectedTo, Search Engine Optimization>
+<Research and Outline, connectedTo, User_Generated Content Curation>
+<Search Engine Optimization, connectedTo, Distribution Planning>
+<Search Engine Optimization, connectedTo, Editing and Proofreading>
+<Search Engine Optimization, connectedTo, Podcast Production>
+<Search Engine Optimization, connectedTo, User_Generated Content Curation>
+<User_Generated Content Curation, collaborates, Keyword Research>
+<User_Generated Content Curation, connectedTo, Animation>
+<Videography, connectedTo, Podcast Production>
+<start, connectedTo, Call to Action Design>
+<start, connectedTo, Fact_Checking>
diff --git a/train/mermaid/hard/mermaid_482.txt b/train/mermaid/hard/mermaid_482.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6bc95940ea6d1bf3e99f79295efebdbfd39a4843
--- /dev/null
+++ b/train/mermaid/hard/mermaid_482.txt
@@ -0,0 +1,36 @@
+<A or B Testing Analysis, connectedTo, Web Analytics>
+<A or B Testing Analysis, partOf, Data Quality Assurance>
+<Customer Analytics, connectedTo, Financial Data Analysis>
+<Customer Analytics, partOf, Data Quality Assurance>
+<Dashboard Creation, connectedTo, Data Warehouse Design>
+<Dashboard Creation, connectedTo, Financial Data Analysis>
+<Data Cleaning, connectedTo, Data Collection>
+<Data Cleaning, partOf, Data Mining>
+<Data Warehouse Design, integrates, Text Analytics>
+<ETL Process Management, connectedTo, Data Collection>
+<ETL Process Management, connectedTo, HR Data Analytics>
+<ETL Process Management, connectedTo, Sentiment Analysis>
+<Financial Data Analysis, connectedTo, Data Warehouse Design>
+<Financial Data Analysis, connectedTo, Supply Chain Analytics>
+<Financial Data Analysis, reports, Natural Language Processing for Data>
+<Geospatial Analysis, connectedTo, Prescriptive Analytics>
+<Geospatial Analysis, connectedTo, Text Analytics>
+<Geospatial Analysis, predicts, Sentiment Analysis>
+<HR Data Analytics, connectedTo, Data Collection>
+<Natural Language Processing for Data, connectedTo, Geospatial Analysis>
+<Prescriptive Analytics, connectedTo, Data Warehouse Design>
+<Real_time Analytics, connectedTo, Dashboard Creation>
+<Report Generation, develops, Dashboard Creation>
+<Report Generation, interprets, Real_time Analytics>
+<Sentiment Analysis, connectedTo, HR Data Analytics>
+<Supply Chain Analytics, partOf, Data Mining>
+<Supply Chain Analytics, stores, Data Cleaning>
+<Text Analytics, connectedTo, ETL Process Management>
+<Text Analytics, connectedTo, HR Data Analytics>
+<Text Analytics, connectedTo, Sentiment Analysis>
+<Time Series Forecasting, connectedTo, A or B Testing Analysis>
+<Time Series Forecasting, models, Report Generation>
+<Web Analytics, connectedTo, Customer Analytics>
+<Web Analytics, partOf, Data Quality Assurance>
+<start, connectedTo, Dashboard Creation>
+<start, connectedTo, Time Series Forecasting>
diff --git a/train/mermaid/hard/mermaid_484.mmd b/train/mermaid/hard/mermaid_484.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..42161269fcfb8e0e5adc56490d2ce6f6408709f1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_484.mmd
@@ -0,0 +1,130 @@
+graph BT
+    N0([A or B Testing Analysis])
+    N1[Time Series Forecasting]
+    N2[/Data Mining/]
+    N3[[Report Generation]]
+    N4{Cloud_based Data Platforms}
+    N5[/Data Transformation/]
+    N6(Marketing Campaign Analysis)
+    N7{Web Analytics}
+    N8(Business User Training on Analytics)
+    N9[Data Security Best Practices]
+    N10([Prescriptive Analytics])
+    N11[Geospatial Analysis]
+    N12(Natural Language Processing for Data)
+    N13([Text Analytics])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph ETL Process Management
+        nest0_0[Financial Data Analysis]
+        nest0_1(HR Data Analytics)
+    end
+    subgraph Exploratory Data Analysis
+        nest1_0[(Data Cleaning)]
+        nest1_1(Data Quality Assurance)
+        nest1_2(Data Storytelling)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> |discovers| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> |tracks| N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    nest0_0 --> nest0_1
+    N5 --> nest0_0
+    nest0_1 -.-> N13
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N4 --> nest1_0
+    nest1_2 -.-> N10
+    N0 -.-> S0
+    S0 -.-> N9
+    S0 --> N2
+    N10 --> S1
+    S1 -.-> N12
+    S1 -.-> N13
+    N10 -.-> S2
+    S2 -.-> N12
+    S2 -.-> N13
+    N1 -.-> M0
+    N0 -.-> M0
+    N2 -.-> |queries| M0
+    M0 -.-> N4
+    N4 --> M1
+    N2 -.-> M1
+    N0 --> M1
+    N5 -.-> M1
+    M1 -.-> N9
+    style N0 fill:#FFF3E0,stroke:#FFB74D
+    style N1 fill:#FFF3E0,stroke:#FFB74D
+    style N2 fill:#FFF3E0,stroke:#FFB74D
+    style N3 fill:#FFE0B2,stroke:#FF9800
+    style N4 fill:#FFF3E0,stroke:#FFB74D
+    style N5 fill:#FFE0B2,stroke:#FF9800
+    style N6 fill:#F0F4C3,stroke:#AED581
+    style N7 fill:#FFE0B2,stroke:#FF9800
+    style N8 fill:#FFF3E0,stroke:#FFB74D
+    style N9 fill:#FFE0B2,stroke:#FF9800
+    style N10 fill:#F0F4C3,stroke:#AED581
+    style N11 fill:#FFE0B2,stroke:#FF9800
+    style N12 fill:#FFE0B2,stroke:#FF9800
+    style N13 fill:#FFE0B2,stroke:#FF9800
+    style S0 fill:#FFF3E0,stroke:#FFB74D
+    style S1 fill:#FFF3E0,stroke:#FFB74D
+    style S2 fill:#F0F4C3,stroke:#AED581
+    style M0 fill:#FFF3E0,stroke:#FFB74D
+    style M1 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_0 fill:#FFE0B2,stroke:#FF9800
+    style nest0_1 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_0 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_1 fill:#FFE0B2,stroke:#FF9800
+    style nest1_2 fill:#FFE0B2,stroke:#FF9800
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB74D,stroke-width:2px,fill:none;
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+    linkStyle 24 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FF9800,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_485.mmd b/train/mermaid/hard/mermaid_485.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..23b6c7265ffd24ff0a752f9d386e4c5dd9c1d100
--- /dev/null
+++ b/train/mermaid/hard/mermaid_485.mmd
@@ -0,0 +1,132 @@
+graph TD
+    N0([start])
+    N1[Text Analytics]
+    N2(Dashboard Creation)
+    N3[ETL Process Management]
+    N4[[Healthcare Data Analysis]]
+    N5[(Financial Data Analysis)]
+    N6[Machine Learning Integration]
+    N7[[Social Media Analytics]]
+    N8(Business User Training on Analytics)
+    N9(Data Quality Assurance)
+    N10([Operational Efficiency Metrics])
+    N11[[Customer Analytics]]
+    N12([Data Transformation])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Cloud_based Data Platforms
+        nest0_0[/Supply Chain Analytics/]
+        nest0_1[[A or B Testing Analysis]]
+        nest0_2(Geospatial Analysis)
+        nest0_3(Data Storytelling)
+    end
+    subgraph Statistical Modeling
+        nest1_0(Predictive Analytics)
+        nest1_1[[Sales Performance Analysis]]
+    end
+    N0 -.-> N1
+    N1 --> |stores| N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> |predicts| N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    nest0_1 -.-> |supports| nest0_2
+    nest0_2 -.-> nest0_3
+    N6 --> nest0_0
+    nest0_3 -.-> N5
+    nest1_0 --> nest1_1
+    N11 -.-> nest1_0
+    nest1_1 -.-> N10
+    N3 -.-> S0
+    S0 --> N6
+    S0 --> N8
+    S0 -.-> |pipelines| N12
+    N3 --> S1
+    S1 --> N6
+    S1 -.-> N12
+    S1 --> N10
+    N2 -.-> S2
+    S2 --> |segments| N5
+    S2 --> N7
+    S2 --> N12
+    N3 --> M1
+    N0 -.-> M1
+    N2 --> M1
+    M1 --> N5
+    N7 -.-> M2
+    N1 -.-> |reports| M2
+    M2 -.-> N10
+    style N0 fill:#DED7F0,stroke:#A188DB
+    style N1 fill:#F3E5F5,stroke:#BA68C8
+    style N2 fill:#DED7F0,stroke:#A188DB
+    style N3 fill:#DED7F0,stroke:#A188DB
+    style N4 fill:#F2E6F5,stroke:#CB9BE1
+    style N5 fill:#F2E6F5,stroke:#CB9BE1
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#F2E6F5,stroke:#CB9BE1
+    style N8 fill:#DED7F0,stroke:#A188DB
+    style N9 fill:#F2E6F5,stroke:#CB9BE1
+    style N10 fill:#F2E6F5,stroke:#CB9BE1
+    style N11 fill:#F2E6F5,stroke:#CB9BE1
+    style N12 fill:#F3E5F5,stroke:#BA68C8
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#F3E5F5,stroke:#BA68C8
+    style S2 fill:#DED7F0,stroke:#A188DB
+    style M1 fill:#F3E5F5,stroke:#BA68C8
+    style M2 fill:#DED7F0,stroke:#A188DB
+    style nest0_0 fill:#DED7F0,stroke:#A188DB
+    style nest0_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_2 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_3 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_1 fill:#F2E6F5,stroke:#CB9BE1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188DB,stroke-width:2px,fill:none;
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+    linkStyle 23 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#A188DB,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_485.txt b/train/mermaid/hard/mermaid_485.txt
new file mode 100644
index 0000000000000000000000000000000000000000..48c5d4e3968c347284a644318db110b24d7637d8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_485.txt
@@ -0,0 +1,39 @@
+<A or B Testing Analysis, partOf, Cloud_based Data Platforms>
+<A or B Testing Analysis, supports, Geospatial Analysis>
+<Business User Training on Analytics, connectedTo, Data Quality Assurance>
+<Customer Analytics, connectedTo, Data Transformation>
+<Customer Analytics, connectedTo, Predictive Analytics>
+<Dashboard Creation, connectedTo, Data Transformation>
+<Dashboard Creation, connectedTo, ETL Process Management>
+<Dashboard Creation, connectedTo, Financial Data Analysis>
+<Dashboard Creation, connectedTo, Social Media Analytics>
+<Dashboard Creation, segments, Financial Data Analysis>
+<Data Quality Assurance, predicts, Operational Efficiency Metrics>
+<Data Storytelling, connectedTo, Financial Data Analysis>
+<Data Storytelling, partOf, Cloud_based Data Platforms>
+<ETL Process Management, connectedTo, Business User Training on Analytics>
+<ETL Process Management, connectedTo, Data Transformation>
+<ETL Process Management, connectedTo, Financial Data Analysis>
+<ETL Process Management, connectedTo, Healthcare Data Analysis>
+<ETL Process Management, connectedTo, Machine Learning Integration>
+<ETL Process Management, connectedTo, Operational Efficiency Metrics>
+<ETL Process Management, pipelines, Data Transformation>
+<Financial Data Analysis, connectedTo, Machine Learning Integration>
+<Geospatial Analysis, connectedTo, Data Storytelling>
+<Geospatial Analysis, partOf, Cloud_based Data Platforms>
+<Healthcare Data Analysis, connectedTo, Financial Data Analysis>
+<Machine Learning Integration, connectedTo, Social Media Analytics>
+<Machine Learning Integration, connectedTo, Supply Chain Analytics>
+<Operational Efficiency Metrics, connectedTo, Customer Analytics>
+<Predictive Analytics, connectedTo, Sales Performance Analysis>
+<Predictive Analytics, partOf, Statistical Modeling>
+<Sales Performance Analysis, connectedTo, Operational Efficiency Metrics>
+<Sales Performance Analysis, partOf, Statistical Modeling>
+<Social Media Analytics, connectedTo, Business User Training on Analytics>
+<Social Media Analytics, connectedTo, Operational Efficiency Metrics>
+<Supply Chain Analytics, connectedTo, A or B Testing Analysis>
+<Supply Chain Analytics, partOf, Cloud_based Data Platforms>
+<Text Analytics, reports, Operational Efficiency Metrics>
+<Text Analytics, stores, Dashboard Creation>
+<start, connectedTo, Financial Data Analysis>
+<start, connectedTo, Text Analytics>
diff --git a/train/mermaid/hard/mermaid_486.mmd b/train/mermaid/hard/mermaid_486.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1530dc50f183e244e5cf0a51f085dba2ebf39f9b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_486.mmd
@@ -0,0 +1,116 @@
+graph RL
+    N0([start])
+    N1{Social Media Analytics}
+    N2[(Report Generation)]
+    N3(Sentiment Analysis)
+    N4[Geospatial Analysis]
+    N5[(Data Warehouse Design)]
+    N6[[Machine Learning Integration]]
+    N7[[Data Quality Assurance]]
+    N8([Data Cleaning])
+    N9(Risk Analytics)
+    N10[[Big Data Processing]]
+    N11(Predictive Analytics)
+    N12(Statistical Modeling)
+    N13(Sales Performance Analysis)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Dashboard Creation
+        nest0_0[(Healthcare Data Analysis)]
+        nest0_1[/HR Data Analytics/]
+        nest0_2([Time Series Forecasting])
+        nest0_3[[Marketing Campaign Analysis]]
+    end
+    subgraph Prescriptive Analytics
+        nest1_0(Exploratory Data Analysis)
+        nest1_1[/Web Analytics/]
+        nest1_2[Natural Language Processing for Data]
+        nest1_3[Supply Chain Analytics]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N9 --> nest0_0
+    nest0_3 -.-> N5
+    nest1_0 --> |yes| nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N5 --> nest1_0
+    nest1_3 -.-> N8
+    N6 -.-> S0
+    S0 -.-> N13
+    S0 --> N11
+    N7 --> S1
+    S1 -.-> N9
+    S1 -.-> N11
+    N6 -.-> M0
+    N3 -.-> M0
+    N4 --> M0
+    M0 -.-> N11
+    N0 --> M1
+    N1 --> M1
+    M1 --> N4
+    N0 --> |yes| M2
+    N1 -.-> M2
+    M2 --> N10
+    style S0 fill:#E8EAF6,stroke:#5C6BC0
+    style S1 fill:#E8EAF6,stroke:#5C6BC0
+    style M0 fill:#E8EAF6,stroke:#5C6BC0
+    style M1 fill:#FFE88D,stroke:#FFDA4E
+    style M2 fill:#E8EAF6,stroke:#5C6BC0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_486.txt b/train/mermaid/hard/mermaid_486.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0cef7e4caa1b87ca0b4fa2a04215353221aed226
--- /dev/null
+++ b/train/mermaid/hard/mermaid_486.txt
@@ -0,0 +1,41 @@
+<Big Data Processing, connectedTo, Predictive Analytics>
+<Data Cleaning, connectedTo, Risk Analytics>
+<Data Quality Assurance, connectedTo, Data Cleaning>
+<Data Quality Assurance, connectedTo, Predictive Analytics>
+<Data Quality Assurance, connectedTo, Risk Analytics>
+<Data Warehouse Design, connectedTo, Exploratory Data Analysis>
+<Data Warehouse Design, connectedTo, Machine Learning Integration>
+<Exploratory Data Analysis, partOf, Prescriptive Analytics>
+<Exploratory Data Analysis, yes, Web Analytics>
+<Geospatial Analysis, connectedTo, Data Warehouse Design>
+<Geospatial Analysis, connectedTo, Predictive Analytics>
+<HR Data Analytics, connectedTo, Time Series Forecasting>
+<HR Data Analytics, partOf, Dashboard Creation>
+<Healthcare Data Analysis, connectedTo, HR Data Analytics>
+<Healthcare Data Analysis, partOf, Dashboard Creation>
+<Machine Learning Integration, connectedTo, Data Quality Assurance>
+<Machine Learning Integration, connectedTo, Predictive Analytics>
+<Machine Learning Integration, connectedTo, Sales Performance Analysis>
+<Marketing Campaign Analysis, connectedTo, Data Warehouse Design>
+<Marketing Campaign Analysis, partOf, Dashboard Creation>
+<Natural Language Processing for Data, connectedTo, Supply Chain Analytics>
+<Natural Language Processing for Data, partOf, Prescriptive Analytics>
+<Predictive Analytics, connectedTo, Statistical Modeling>
+<Report Generation, connectedTo, Sentiment Analysis>
+<Risk Analytics, connectedTo, Big Data Processing>
+<Risk Analytics, connectedTo, Healthcare Data Analysis>
+<Sentiment Analysis, connectedTo, Geospatial Analysis>
+<Sentiment Analysis, connectedTo, Predictive Analytics>
+<Social Media Analytics, connectedTo, Big Data Processing>
+<Social Media Analytics, connectedTo, Geospatial Analysis>
+<Social Media Analytics, connectedTo, Report Generation>
+<Statistical Modeling, connectedTo, Sales Performance Analysis>
+<Supply Chain Analytics, connectedTo, Data Cleaning>
+<Supply Chain Analytics, partOf, Prescriptive Analytics>
+<Time Series Forecasting, connectedTo, Marketing Campaign Analysis>
+<Time Series Forecasting, partOf, Dashboard Creation>
+<Web Analytics, connectedTo, Natural Language Processing for Data>
+<Web Analytics, partOf, Prescriptive Analytics>
+<start, connectedTo, Geospatial Analysis>
+<start, connectedTo, Social Media Analytics>
+<start, yes, Big Data Processing>
diff --git a/train/mermaid/hard/mermaid_489.mmd b/train/mermaid/hard/mermaid_489.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0f89226671c3831dc0891d313c65a5e7a10d9b21
--- /dev/null
+++ b/train/mermaid/hard/mermaid_489.mmd
@@ -0,0 +1,136 @@
+graph RL
+    N0([Cloud BI Solutions])
+    N1(User Training and Support)
+    N2(Query Optimization)
+    N3[[Performance Monitoring]]
+    N4[/Business Process Improvement/]
+    N5(Data Source Integration)
+    N6[(Market Trend Analysis)]
+    N7[[Budget Performance Analysis]]
+    N8[(Actionable Insights Generation)]
+    N9(Dashboard Design)
+    N10[Strategic Planning Support]
+    N11{HR Analytics Dashboards}
+    N12[Supply Chain Optimization]
+    N13[Sales Forecasting]
+    N14(Executive Summary Reporting)
+    N15{Financial Performance Reporting}
+    N16[Prescriptive Analytics Implementation]
+    N17([Mobile BI Development])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph BI Platform Administration
+        nest0_0(Data Security in BI)
+        nest0_1[Regulatory Compliance Reporting]
+        nest0_2[Customer Behavior Insights]
+    end
+    subgraph Data Warehousing
+        nest1_0[Master Data Management]
+        nest1_1[(Report Automation)]
+        nest1_2(Risk Assessment Reporting)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> |automates| N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> |optimizes| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> |models| N16
+    N16 --> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N1 --> nest0_0
+    nest0_2 --> N2
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N12 --> nest1_0
+    nest1_2 --> N3
+    N14 --> S0
+    S0 -.-> N17
+    S0 --> |complies| N16
+    N14 -.-> S1
+    S1 -.-> N17
+    S1 -.-> N16
+    N5 -.-> S2
+    S2 --> N10
+    S2 -.-> |processes| N17
+    N0 --> M0
+    N1 -.-> M0
+    M0 --> N3
+    style N0 fill:#F1F8E9,stroke:#81C784
+    style N1 fill:#F2E6F5,stroke:#CB9BE1
+    style N2 fill:#F1F8E9,stroke:#81C784
+    style N3 fill:#FFF6D9,stroke:#FFCC7A
+    style N4 fill:#F1F8E9,stroke:#81C784
+    style N5 fill:#F1F8E9,stroke:#81C784
+    style N6 fill:#FFF6D9,stroke:#FFCC7A
+    style N7 fill:#F1F8E9,stroke:#81C784
+    style N8 fill:#F2E6F5,stroke:#CB9BE1
+    style N9 fill:#F2E6F5,stroke:#CB9BE1
+    style N10 fill:#FFF6D9,stroke:#FFCC7A
+    style N11 fill:#F2E6F5,stroke:#CB9BE1
+    style N12 fill:#F1F8E9,stroke:#81C784
+    style N13 fill:#F2E6F5,stroke:#CB9BE1
+    style N14 fill:#F1F8E9,stroke:#81C784
+    style N15 fill:#F2E6F5,stroke:#CB9BE1
+    style N16 fill:#F1F8E9,stroke:#81C784
+    style N17 fill:#F1F8E9,stroke:#81C784
+    style S0 fill:#F2E6F5,stroke:#CB9BE1
+    style S1 fill:#F1F8E9,stroke:#81C784
+    style S2 fill:#F1F8E9,stroke:#81C784
+    style M0 fill:#F1F8E9,stroke:#81C784
+    style nest0_0 fill:#F1F8E9,stroke:#81C784
+    style nest0_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest0_2 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_2 fill:#FFF6D9,stroke:#FFCC7A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#81C784,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_490.txt b/train/mermaid/hard/mermaid_490.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a48248c76d5e466c2c36b0189072786aad5e5bff
--- /dev/null
+++ b/train/mermaid/hard/mermaid_490.txt
@@ -0,0 +1,30 @@
+<Budget Performance Analysis, connectedTo, Business Process Improvement>
+<Business Process Improvement, connectedTo, Operational Efficiency Measurement>
+<Cloud BI Solutions, connectedTo, Budget Performance Analysis>
+<Data Governance Policies, connectedTo, Data Lineage Tracking>
+<Data Governance Policies, connectedTo, Data Security in BI>
+<Data Governance Policies, connectedTo, Data Source Integration>
+<Data Governance Policies, connectedTo, Risk Assessment Reporting>
+<Data Lineage Tracking, connectedTo, Data Warehousing>
+<Data Lineage Tracking, partOf, Strategic Planning Support>
+<Data Security in BI, connectedTo, Dashboard Design>
+<Data Source Integration, connectedTo, Cloud BI Solutions>
+<Data Warehousing, connectedTo, Business Process Improvement>
+<Data Warehousing, partOf, Strategic Planning Support>
+<HR Analytics Dashboards, connectedTo, Business Process Improvement>
+<HR Analytics Dashboards, partOf, Self_Service BI Tools>
+<KPI Definition, connectedTo, Data Governance Policies>
+<KPI Definition, connectedTo, OLAP Cube Creation>
+<Master Data Management, connectedTo, Query Optimization>
+<Master Data Management, partOf, Self_Service BI Tools>
+<OLAP Cube Creation, connectedTo, Master Data Management>
+<OLAP Cube Creation, partOf, Self_Service BI Tools>
+<Operational Efficiency Measurement, connectedTo, Dashboard Design>
+<Operational Efficiency Measurement, connectedTo, Data Security in BI>
+<Operational Efficiency Measurement, connectedTo, Risk Assessment Reporting>
+<Prescriptive Analytics Implementation, automates, Risk Assessment Reporting>
+<Prescriptive Analytics Implementation, connectedTo, Data Security in BI>
+<Prescriptive Analytics Implementation, connectedTo, KPI Definition>
+<Query Optimization, connectedTo, HR Analytics Dashboards>
+<Query Optimization, partOf, Self_Service BI Tools>
+<Risk Assessment Reporting, connectedTo, Data Security in BI>
diff --git a/train/mermaid/hard/mermaid_492.txt b/train/mermaid/hard/mermaid_492.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4397ede58578148f1e99a202b2fb5cc298ee45bd
--- /dev/null
+++ b/train/mermaid/hard/mermaid_492.txt
@@ -0,0 +1,47 @@
+<Actionable Insights Generation, connectedTo, Strategic Planning Support>
+<BI Platform Administration, connectedTo, Executive Summary Reporting>
+<Budget Performance Analysis, connectedTo, Data Lineage Tracking>
+<Budget Performance Analysis, connectedTo, Data Warehousing>
+<Budget Performance Analysis, connectedTo, Financial Performance Reporting>
+<Budget Performance Analysis, connectedTo, Mobile BI Development>
+<Business Process Improvement, connectedTo, Report Automation>
+<Business Process Improvement, partOf, Performance Monitoring>
+<Cloud BI Solutions, connectedTo, BI Platform Administration>
+<Cloud BI Solutions, connectedTo, Data Warehousing>
+<Cloud BI Solutions, connectedTo, Sales Forecasting>
+<Cloud BI Solutions, yes, Executive Summary Reporting>
+<Data Lineage Tracking, connectedTo, Actionable Insights Generation>
+<Data Quality Management, connectedTo, BI Platform Administration>
+<Data Security in BI, connectedTo, OLAP Cube Creation>
+<Data Security in BI, connectedTo, Operational Efficiency Measurement>
+<Data Source Integration, connectedTo, Business Process Improvement>
+<Data Source Integration, partOf, Performance Monitoring>
+<Data Warehousing, connectedTo, end>
+<Executive Summary Reporting, connectedTo, Data Warehousing>
+<Financial Performance Reporting, connectedTo, Data Lineage Tracking>
+<Financial Performance Reporting, connectedTo, Data Source Integration>
+<Mobile BI Development, connectedTo, Regulatory Compliance Reporting>
+<OLAP Cube Creation, connectedTo, Data Warehousing>
+<OLAP Cube Creation, connectedTo, Financial Performance Reporting>
+<OLAP Cube Creation, connectedTo, end>
+<OLAP Cube Creation, yes, Budget Performance Analysis>
+<Operational Efficiency Measurement, connectedTo, Data Warehousing>
+<Operational Efficiency Measurement, connectedTo, OLAP Cube Creation>
+<Prescriptive Analytics Implementation, connectedTo, Risk Assessment Reporting>
+<Prescriptive Analytics Implementation, partOf, Data Storytelling for Business>
+<Query Optimization, connectedTo, Supply Chain Optimization>
+<Query Optimization, partOf, Data Storytelling for Business>
+<Regulatory Compliance Reporting, connectedTo, Cloud BI Solutions>
+<Regulatory Compliance Reporting, connectedTo, Data Warehousing>
+<Report Automation, connectedTo, OLAP Cube Creation>
+<Report Automation, partOf, Performance Monitoring>
+<Risk Assessment Reporting, connectedTo, Query Optimization>
+<Risk Assessment Reporting, partOf, Data Storytelling for Business>
+<Sales Forecasting, no, Data Warehousing>
+<Sales Forecasting, no, Financial Performance Reporting>
+<Strategic Planning Support, connectedTo, Prescriptive Analytics Implementation>
+<Strategic Planning Support, yes, Data Quality Management>
+<Supply Chain Optimization, connectedTo, Strategic Planning Support>
+<Supply Chain Optimization, partOf, Data Storytelling for Business>
+<start, connectedTo, Data Security in BI>
+<start, connectedTo, OLAP Cube Creation>
diff --git a/train/mermaid/hard/mermaid_494.txt b/train/mermaid/hard/mermaid_494.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c4eec8913356108d8e51e2934a05c0b3084b6cb6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_494.txt
@@ -0,0 +1,40 @@
+<Actionable Insights Generation, connectedTo, Data Lineage Tracking>
+<BI Platform Administration, connectedTo, Data Mart Design>
+<BI Platform Administration, partOf, Self_Service BI Tools>
+<Budget Performance Analysis, connectedTo, Customer Behavior Insights>
+<Budget Performance Analysis, connectedTo, ETL Development>
+<Budget Performance Analysis, connectedTo, Sales Forecasting>
+<Budget Performance Analysis, connectedTo, Supply Chain Optimization>
+<Cloud BI Solutions, connectedTo, Supply Chain Optimization>
+<Cloud BI Solutions, self_serves, Budget Performance Analysis>
+<Customer Behavior Insights, connectedTo, Supply Chain Optimization>
+<Data Lineage Tracking, connectedTo, Financial Performance Reporting>
+<Data Mart Design, connectedTo, Query Optimization>
+<Data Mart Design, partOf, Self_Service BI Tools>
+<Data Quality Management, connectedTo, User Training and Support>
+<Data Quality Management, partOf, Data Security in BI>
+<Data Source Integration, connectedTo, Customer Behavior Insights>
+<Data Source Integration, connectedTo, Mobile BI Development>
+<ETL Development, connectedTo, Actionable Insights Generation>
+<Embedded Analytics, connectedTo, Budget Performance Analysis>
+<Embedded Analytics, connectedTo, Cloud BI Solutions>
+<Embedded Analytics, connectedTo, Supply Chain Optimization>
+<Mobile BI Development, connectedTo, Data Quality Management>
+<Mobile BI Development, partOf, Data Security in BI>
+<Operational Efficiency Measurement, connectedTo, BI Platform Administration>
+<Operational Efficiency Measurement, connectedTo, Real_time BI Dashboards>
+<Query Optimization, connectedTo, Risk Assessment Reporting>
+<Query Optimization, partOf, Self_Service BI Tools>
+<Real_time BI Dashboards, connectedTo, User Training and Support>
+<Risk Assessment Reporting, connectedTo, Embedded Analytics>
+<Risk Assessment Reporting, partOf, Self_Service BI Tools>
+<Sales Forecasting, connectedTo, Data Source Integration>
+<Supply Chain Optimization, connectedTo, Actionable Insights Generation>
+<Supply Chain Optimization, connectedTo, Data Lineage Tracking>
+<Supply Chain Optimization, connectedTo, Operational Efficiency Measurement>
+<Supply Chain Optimization, connectedTo, Real_time BI Dashboards>
+<Supply Chain Optimization, monitors, Financial Performance Reporting>
+<User Training and Support, connectedTo, ETL Development>
+<start, connectedTo, Embedded Analytics>
+<start, connectedTo, Supply Chain Optimization>
+<start, trains, Budget Performance Analysis>
diff --git a/train/mermaid/hard/mermaid_495.mmd b/train/mermaid/hard/mermaid_495.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fab1f8dc86585f001e54754a6c7aba33843e763b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_495.mmd
@@ -0,0 +1,118 @@
+graph RL
+    N0([start])
+    N1[(Query Optimization)]
+    N2[(Sales Forecasting)]
+    N3[[Customer Behavior Insights]]
+    N4[(Data Quality Management)]
+    N5[Data Source Integration]
+    N6[Competitive Analysis]
+    N7[(Data Lineage Tracking)]
+    N8(Cloud BI Solutions)
+    N9[[Executive Summary Reporting]]
+    N10(Real_time BI Dashboards)
+    N11[KPI Definition]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Embedded Analytics
+        nest0_0(Supply Chain Optimization)
+        nest0_1[[Regulatory Compliance Reporting]]
+    end
+    subgraph Risk Assessment Reporting
+        nest1_0[/Dashboard Design/]
+        nest1_1([Data Mart Design])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    nest0_0 --> |compares| nest0_1
+    N7 -.-> nest0_0
+    nest0_1 -.-> N3
+    nest1_0 --> nest1_1
+    N5 -.-> |recommends| nest1_0
+    nest1_1 --> N10
+    N7 --> S0
+    S0 --> N9
+    S0 --> N10
+    N6 --> S1
+    S1 -.-> N11
+    S1 -.-> N8
+    N0 --> S2
+    S2 -.-> N4
+    S2 --> N5
+    S2 -.-> N10
+    N4 --> M0
+    N1 -.-> M0
+    N2 --> M0
+    M0 -.-> N8
+    N1 -.-> M2
+    N4 --> M2
+    N5 -.-> M2
+    M2 -.-> N7
+    style N0 fill:#ECEFF1,stroke:#90A4AE
+    style N1 fill:#ECEFF1,stroke:#90A4AE
+    style N2 fill:#E8EAF6,stroke:#5C6BC0
+    style N3 fill:#E8EAF6,stroke:#5C6BC0
+    style N4 fill:#E8EAF6,stroke:#5C6BC0
+    style N5 fill:#E8EAF6,stroke:#5C6BC0
+    style N6 fill:#F5F5F5,stroke:#BDBDBD
+    style N7 fill:#ECEFF1,stroke:#90A4AE
+    style N8 fill:#E8EAF6,stroke:#5C6BC0
+    style N9 fill:#F5F5F5,stroke:#BDBDBD
+    style N10 fill:#E8EAF6,stroke:#5C6BC0
+    style N11 fill:#F5F5F5,stroke:#BDBDBD
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#ECEFF1,stroke:#90A4AE
+    style S2 fill:#E8EAF6,stroke:#5C6BC0
+    style M0 fill:#F5F5F5,stroke:#BDBDBD
+    style M2 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_0 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_1 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_1 fill:#F5F5F5,stroke:#BDBDBD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_495.txt b/train/mermaid/hard/mermaid_495.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9a5cb23eca7e93b0e2ec6d376bcf69c0a9673221
--- /dev/null
+++ b/train/mermaid/hard/mermaid_495.txt
@@ -0,0 +1,34 @@
+<Cloud BI Solutions, connectedTo, Executive Summary Reporting>
+<Competitive Analysis, connectedTo, Cloud BI Solutions>
+<Competitive Analysis, connectedTo, Data Lineage Tracking>
+<Competitive Analysis, connectedTo, KPI Definition>
+<Customer Behavior Insights, connectedTo, Data Quality Management>
+<Dashboard Design, connectedTo, Data Mart Design>
+<Dashboard Design, partOf, Risk Assessment Reporting>
+<Data Lineage Tracking, connectedTo, Cloud BI Solutions>
+<Data Lineage Tracking, connectedTo, Executive Summary Reporting>
+<Data Lineage Tracking, connectedTo, Real_time BI Dashboards>
+<Data Lineage Tracking, connectedTo, Supply Chain Optimization>
+<Data Mart Design, connectedTo, Real_time BI Dashboards>
+<Data Mart Design, partOf, Risk Assessment Reporting>
+<Data Quality Management, connectedTo, Cloud BI Solutions>
+<Data Quality Management, connectedTo, Data Lineage Tracking>
+<Data Quality Management, connectedTo, Data Source Integration>
+<Data Source Integration, connectedTo, Competitive Analysis>
+<Data Source Integration, connectedTo, Data Lineage Tracking>
+<Data Source Integration, recommends, Dashboard Design>
+<Executive Summary Reporting, connectedTo, Real_time BI Dashboards>
+<Query Optimization, connectedTo, Cloud BI Solutions>
+<Query Optimization, connectedTo, Data Lineage Tracking>
+<Query Optimization, connectedTo, Sales Forecasting>
+<Real_time BI Dashboards, connectedTo, KPI Definition>
+<Regulatory Compliance Reporting, connectedTo, Customer Behavior Insights>
+<Regulatory Compliance Reporting, partOf, Embedded Analytics>
+<Sales Forecasting, connectedTo, Cloud BI Solutions>
+<Sales Forecasting, connectedTo, Customer Behavior Insights>
+<Supply Chain Optimization, compares, Regulatory Compliance Reporting>
+<Supply Chain Optimization, partOf, Embedded Analytics>
+<start, connectedTo, Data Quality Management>
+<start, connectedTo, Data Source Integration>
+<start, connectedTo, Query Optimization>
+<start, connectedTo, Real_time BI Dashboards>
diff --git a/train/mermaid/hard/mermaid_496.mmd b/train/mermaid/hard/mermaid_496.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6915295cd29ba5e6b286a0ee71a1575bab43e0cc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_496.mmd
@@ -0,0 +1,98 @@
+graph RL
+    N0([start])
+    N1(Data Mart Design)
+    N2(Risk Assessment Reporting)
+    N3[(Self_Service BI Tools)]
+    N4[Strategic Planning Support]
+    N5{Operational Efficiency Measurement}
+    N6{Data Quality Management}
+    N7{Mobile BI Development}
+    N8([Prescriptive Analytics Implementation])
+    N9[(Customer Behavior Insights)]
+    N10(ETL Development)
+    S0(( ))
+    S1(( ))
+    subgraph Dashboard Design
+        nest0_0([Data Lineage Tracking])
+        nest0_1{Competitive Analysis}
+        nest0_2(Market Trend Analysis)
+    end
+    subgraph Real_time BI Dashboards
+        nest1_0[(Data Warehousing)]
+        nest1_1([Regulatory Compliance Reporting])
+        nest1_2(HR Analytics Dashboards)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> |visualizes| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N6 --> nest0_0
+    nest0_2 --> N8
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 -.-> N2
+    N4 -.-> S0
+    S0 -.-> N10
+    S0 --> N6
+    N5 --> S1
+    S1 -.-> N10
+    S1 -.-> N8
+    S1 --> N9
+    N4 --> N2
+    nest0_0 -.-> N2
+    style N0 fill:#FFFDE7,stroke:#FBC02D
+    style N1 fill:#FFFDE7,stroke:#FBC02D
+    style N2 fill:#FFFDE7,stroke:#FBC02D
+    style N3 fill:#FFCDD2,stroke:#F44336
+    style N4 fill:#FFFDE7,stroke:#FBC02D
+    style N5 fill:#FFCDD2,stroke:#F44336
+    style N6 fill:#FFFDE7,stroke:#FBC02D
+    style N7 fill:#FFFDE7,stroke:#FBC02D
+    style N8 fill:#FFFDE7,stroke:#FBC02D
+    style N9 fill:#FFE0B2,stroke:#FF9800
+    style N10 fill:#FFE0B2,stroke:#FF9800
+    style S0 fill:#FFE0B2,stroke:#FF9800
+    style S1 fill:#FFE0B2,stroke:#FF9800
+    style nest0_0 fill:#FFFDE7,stroke:#FBC02D
+    style nest0_1 fill:#FFCDD2,stroke:#F44336
+    style nest0_2 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_0 fill:#FFCDD2,stroke:#F44336
+    style nest1_1 fill:#FFCDD2,stroke:#F44336
+    style nest1_2 fill:#FFFDE7,stroke:#FBC02D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_497.mmd b/train/mermaid/hard/mermaid_497.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..845fdeba1ed179e61f1b74a39f4061d44207afce
--- /dev/null
+++ b/train/mermaid/hard/mermaid_497.mmd
@@ -0,0 +1,104 @@
+graph RL
+    N0([Conversion Rate Optimization])
+    N1(Promotional Campaigns)
+    N2{Pricing Strategy}
+    N3[Marketing Analytics]
+    N4[/Target Audience Identification/]
+    N5{Guerilla Marketing}
+    N6([Partnership Marketing])
+    N7([Video Marketing])
+    N8[/Customer Journey Mapping/]
+    N9[Podcast Marketing]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Brand Strategy Development
+        nest0_0[Public Relations]
+        nest0_1[[Marketing Automation]]
+    end
+    subgraph Customer Segmentation
+        nest1_0[[Market Research]]
+        nest1_1[[Event Marketing]]
+        nest1_2(Direct Mail Marketing)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |monitors competitors| N7
+    N7 --> |launches campaigns| N8
+    N8 --> N9
+    nest0_0 -.-> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 -.-> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N3 -.-> nest1_0
+    nest1_2 --> N9
+    N2 --> S0
+    S0 --> N7
+    S0 -.-> N8
+    N6 -.-> S1
+    S1 -.-> N8
+    S1 -.-> N9
+    N2 --> |enhances experiences| M0
+    N1 -.-> M0
+    N0 --> M0
+    M0 --> N6
+    N4 -.-> M1
+    N3 --> M1
+    N2 -.-> M1
+    M1 -.-> N8
+    style N0 fill:#FCE4EC,stroke:#F06292
+    style N1 fill:#F0F4C3,stroke:#AED581
+    style N2 fill:#FCE4EC,stroke:#F06292
+    style N3 fill:#FFFDE0,stroke:#FFF8A6
+    style N4 fill:#F0F4C3,stroke:#AED581
+    style N5 fill:#FCE4EC,stroke:#F06292
+    style N6 fill:#FFFDE0,stroke:#FFF8A6
+    style N7 fill:#F0F4C3,stroke:#AED581
+    style N8 fill:#FFFDE0,stroke:#FFF8A6
+    style N9 fill:#FFFDE0,stroke:#FFF8A6
+    style S0 fill:#FFFDE0,stroke:#FFF8A6
+    style S1 fill:#F0F4C3,stroke:#AED581
+    style M0 fill:#F0F4C3,stroke:#AED581
+    style M1 fill:#FCE4EC,stroke:#F06292
+    style nest0_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_1 fill:#F0F4C3,stroke:#AED581
+    style nest1_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_1 fill:#F0F4C3,stroke:#AED581
+    style nest1_2 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F06292,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_50.mmd b/train/mermaid/hard/mermaid_50.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..16ef008a853bc71fdb6cb6dd544a912e7642b2c7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_50.mmd
@@ -0,0 +1,114 @@
+graph BT
+    N0([Carbon Capture])
+    N1[(Hydropower Generation)]
+    N2([Cybersecurity for Grid])
+    N3[(Fuel Delivery)]
+    N4([Sensor Reading])
+    N5{Power Plant}
+    N6[[Power Purchase]]
+    N7([Oil and Gas Exploration])
+    N8([Distributed Generation Management])
+    N9([Energy Infrastructure Planning])
+    N10[Load Distribution]
+    N11[(Demand Forecast)]
+    N12[(Transformer Station)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Generator Check
+        nest0_0(Smart Metering)
+        nest0_1[/Battery Monitoring/]
+    end
+    subgraph Load Shedding
+        nest1_0(Wind Turbine Monitoring)
+        nest1_1[Transmission Line Maintenance]
+        nest1_2(Energy Market Analysis)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> |alerts| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> |plans| N12
+    nest0_0 -.-> nest0_1
+    N11 --> nest0_0
+    nest0_1 -.-> N3
+    nest1_0 -.-> |transforms| nest1_1
+    nest1_1 -.-> nest1_2
+    N7 --> nest1_0
+    nest1_2 --> N10
+    N9 --> S0
+    S0 --> N12
+    S0 --> N11
+    N6 --> S1
+    S1 --> |backs up| N12
+    S1 --> N8
+    S1 -.-> N11
+    N9 --> S2
+    S2 -.-> N12
+    S2 --> N11
+    N4 --> |researches| M1
+    N0 --> |monitors| M1
+    M1 -.-> N6
+    style N0 fill:#D3D7EB,stroke:#8C9EFF
+    style N1 fill:#D3D7EB,stroke:#8C9EFF
+    style N2 fill:#F0F4C3,stroke:#AED581
+    style N3 fill:#E9F7E8,stroke:#6EB76D
+    style N4 fill:#F0F4C3,stroke:#AED581
+    style N5 fill:#E9F7E8,stroke:#6EB76D
+    style N6 fill:#E9F7E8,stroke:#6EB76D
+    style N7 fill:#D3D7EB,stroke:#8C9EFF
+    style N8 fill:#F0F4C3,stroke:#AED581
+    style N9 fill:#D3D7EB,stroke:#8C9EFF
+    style N10 fill:#F0F4C3,stroke:#AED581
+    style N11 fill:#F0F4C3,stroke:#AED581
+    style N12 fill:#E9F7E8,stroke:#6EB76D
+    style S0 fill:#F0F4C3,stroke:#AED581
+    style S1 fill:#D3D7EB,stroke:#8C9EFF
+    style S2 fill:#D3D7EB,stroke:#8C9EFF
+    style M1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest0_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_1 fill:#F0F4C3,stroke:#AED581
+    style nest1_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_2 fill:#D3D7EB,stroke:#8C9EFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#8C9EFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_50.txt b/train/mermaid/hard/mermaid_50.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2eb0f88ce1b5ca7cb71815ba6a3c246c97898501
--- /dev/null
+++ b/train/mermaid/hard/mermaid_50.txt
@@ -0,0 +1,31 @@
+<Battery Monitoring, connectedTo, Fuel Delivery>
+<Battery Monitoring, partOf, Generator Check>
+<Carbon Capture, connectedTo, Hydropower Generation>
+<Carbon Capture, monitors, Power Purchase>
+<Cybersecurity for Grid, alerts, Fuel Delivery>
+<Demand Forecast, connectedTo, Smart Metering>
+<Demand Forecast, plans, Transformer Station>
+<Distributed Generation Management, connectedTo, Energy Infrastructure Planning>
+<Energy Infrastructure Planning, connectedTo, Demand Forecast>
+<Energy Infrastructure Planning, connectedTo, Load Distribution>
+<Energy Infrastructure Planning, connectedTo, Transformer Station>
+<Energy Market Analysis, connectedTo, Load Distribution>
+<Energy Market Analysis, partOf, Load Shedding>
+<Fuel Delivery, connectedTo, Sensor Reading>
+<Hydropower Generation, connectedTo, Cybersecurity for Grid>
+<Load Distribution, connectedTo, Demand Forecast>
+<Oil and Gas Exploration, connectedTo, Distributed Generation Management>
+<Oil and Gas Exploration, connectedTo, Wind Turbine Monitoring>
+<Power Plant, connectedTo, Power Purchase>
+<Power Purchase, backs up, Transformer Station>
+<Power Purchase, connectedTo, Demand Forecast>
+<Power Purchase, connectedTo, Distributed Generation Management>
+<Power Purchase, connectedTo, Oil and Gas Exploration>
+<Sensor Reading, connectedTo, Power Plant>
+<Sensor Reading, researches, Power Purchase>
+<Smart Metering, connectedTo, Battery Monitoring>
+<Smart Metering, partOf, Generator Check>
+<Transmission Line Maintenance, connectedTo, Energy Market Analysis>
+<Transmission Line Maintenance, partOf, Load Shedding>
+<Wind Turbine Monitoring, partOf, Load Shedding>
+<Wind Turbine Monitoring, transforms, Transmission Line Maintenance>
diff --git a/train/mermaid/hard/mermaid_500.txt b/train/mermaid/hard/mermaid_500.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4ee4ff6b21dd4bf406bab289b2b3198bb7a5296c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_500.txt
@@ -0,0 +1,33 @@
+<Affiliate Marketing, connectedTo, Experiential Marketing>
+<Affiliate Marketing, partOf, Brand Reputation Management>
+<Campaign Performance Tracking, connectedTo, Market Research>
+<Campaign Performance Tracking, partOf, Search Engine Optimization>
+<Competitive Analysis, connectedTo, Direct Mail Marketing>
+<Competitive Analysis, partOf, Search Engine Optimization>
+<Content Marketing, connectedTo, Affiliate Marketing>
+<Content Marketing, partOf, Brand Reputation Management>
+<Direct Mail Marketing, connectedTo, Marketing Budget Allocation>
+<Direct Mail Marketing, connectedTo, Search Engine Marketing>
+<Distribution Channel Management, connectedTo, Experiential Marketing>
+<Email Marketing, connectedTo, Competitive Analysis>
+<Email Marketing, partOf, Search Engine Optimization>
+<Market Research, connectedTo, Email Marketing>
+<Market Research, partOf, Search Engine Optimization>
+<Marketing Budget Allocation, connectedTo, Content Marketing>
+<Marketing Budget Allocation, connectedTo, Distribution Channel Management>
+<Marketing Budget Allocation, connectedTo, Experiential Marketing>
+<Personalization Strategies, connectedTo, Experiential Marketing>
+<Personalization Strategies, handles PR, Direct Mail Marketing>
+<Podcast Marketing, connectedTo, Campaign Performance Tracking>
+<Podcast Marketing, connectedTo, Distribution Channel Management>
+<Podcast Marketing, connectedTo, Experiential Marketing>
+<Podcast Marketing, connectedTo, Marketing Budget Allocation>
+<Product Launch Strategy, connectedTo, Direct Mail Marketing>
+<Product Launch Strategy, connectedTo, Marketing Budget Allocation>
+<Product Launch Strategy, connectedTo, Social Media Marketing>
+<Search Engine Marketing, connectedTo, Distribution Channel Management>
+<Search Engine Marketing, connectedTo, Experiential Marketing>
+<Search Engine Marketing, connectedTo, Podcast Marketing>
+<Social Media Marketing, connectedTo, Direct Mail Marketing>
+<Social Media Marketing, connectedTo, Experiential Marketing>
+<Social Media Marketing, connectedTo, Personalization Strategies>
diff --git a/train/mermaid/hard/mermaid_503.txt b/train/mermaid/hard/mermaid_503.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c75d200d8893e1a419e1c45a6d5ed869d6794124
--- /dev/null
+++ b/train/mermaid/hard/mermaid_503.txt
@@ -0,0 +1,44 @@
+<A or B Testing for Marketing, connectedTo, Guerilla Marketing>
+<A or B Testing for Marketing, connectedTo, Podcast Marketing>
+<A or B Testing for Marketing, connectedTo, Pricing Strategy>
+<A or B Testing for Marketing, connectedTo, Promotional Campaigns>
+<A or B Testing for Marketing, connectedTo, Telemarketing>
+<A or B Testing for Marketing, connectedTo, end>
+<Affiliate Marketing, connectedTo, Event Marketing>
+<Affiliate Marketing, connectedTo, Lead Generation>
+<Brand Reputation Management, connectedTo, Video Marketing>
+<Competitive Analysis, connectedTo, Search Engine Optimization>
+<Customer Journey Mapping, connectedTo, Marketing Budget Allocation>
+<Customer Segmentation, connectedTo, Direct Mail Marketing>
+<Customer Segmentation, connectedTo, Lead Generation>
+<Direct Mail Marketing, connectedTo, Customer Journey Mapping>
+<Direct Mail Marketing, connectedTo, Guerilla Marketing>
+<Direct Mail Marketing, connectedTo, Lead Generation>
+<Direct Mail Marketing, connectedTo, Marketing Budget Allocation>
+<Direct Mail Marketing, connectedTo, Promotional Campaigns>
+<Direct Mail Marketing, connectedTo, end>
+<Distribution Channel Management, connectedTo, Mobile Marketing>
+<Distribution Channel Management, partOf, Remarketing Campaigns>
+<Event Marketing, connectedTo, Customer Segmentation>
+<Event Marketing, connectedTo, Lead Generation>
+<Guerilla Marketing, connectedTo, Podcast Marketing>
+<Guerilla Marketing, connectedTo, Public Relations>
+<Influencer Marketing, partOf, Content Marketing>
+<Influencer Marketing, personalizes content, A or B Testing for Marketing>
+<Lead Generation, connectedTo, Brand Reputation Management>
+<Market Research, connectedTo, Customer Journey Mapping>
+<Marketing Budget Allocation, connectedTo, A or B Testing for Marketing>
+<Mobile Marketing, connectedTo, Competitive Analysis>
+<Mobile Marketing, partOf, Remarketing Campaigns>
+<Podcast Marketing, connectedTo, Telemarketing>
+<Pricing Strategy, connectedTo, Distribution Channel Management>
+<Pricing Strategy, partOf, Remarketing Campaigns>
+<Promotional Campaigns, connectedTo, Competitive Analysis>
+<Public Relations, connectedTo, Influencer Marketing>
+<Public Relations, partOf, Content Marketing>
+<Search Engine Optimization, connectedTo, end>
+<Telemarketing, connectedTo, Promotional Campaigns>
+<Video Marketing, connectedTo, Market Research>
+<start, connectedTo, Affiliate Marketing>
+<start, connectedTo, Guerilla Marketing>
+<start, connectedTo, Lead Generation>
diff --git a/train/mermaid/hard/mermaid_504.mmd b/train/mermaid/hard/mermaid_504.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..05debbfcc0000952a81ed823954eaddb58678814
--- /dev/null
+++ b/train/mermaid/hard/mermaid_504.mmd
@@ -0,0 +1,106 @@
+graph RL
+    N0([start])
+    N1([Target Audience Identification])
+    N2[Content Marketing]
+    N3[[Podcast Marketing]]
+    N4(Experiential Marketing)
+    N5[[Personalization Strategies]]
+    N6[Customer Segmentation]
+    N7(Mobile Marketing)
+    N8{Customer Relationship Management}
+    N9(Competitive Analysis)
+    N10(Video Marketing)
+    N11(Marketing Automation)
+    N12[Campaign Performance Tracking]
+    N13(Brand Strategy Development)
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Search Engine Optimization
+        nest0_0[Conversion Rate Optimization]
+        nest0_1([Product Launch Strategy])
+        nest0_2[Promotional Campaigns]
+        nest0_3(Lead Generation)
+    end
+    subgraph Remarketing Campaigns
+        nest1_0[(Partnership Marketing)]
+        nest1_1[Market Research]
+        nest1_2(Event Marketing)
+        nest1_3[/Influencer Marketing/]
+    end
+    N0 -.-> N1
+    N1 --> |no| N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> |no| N11
+    N11 --> N12
+    N12 -.-> |yes| N13
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 --> nest0_0
+    nest0_3 -.-> N3
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> |no| nest1_3
+    N3 --> nest1_0
+    nest1_3 -.-> N3
+    N10 --> S0
+    S0 -.-> |no| N13
+    S0 --> N12
+    N7 --> S1
+    S1 --> N12
+    S1 -.-> N11
+    S1 --> N9
+    S1 --> N13
+    N6 --> M1
+    N8 -.-> M1
+    N4 -.-> M1
+    N0 --> M1
+    M1 -.-> N11
+    style S0 fill:#FFFAE0,stroke:#FFE470
+    style S1 fill:#FFFAE0,stroke:#FFE470
+    style M1 fill:#FFFCE6,stroke:#FFF9AE
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFE470,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_505.mmd b/train/mermaid/hard/mermaid_505.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9e4f3d9f8e1cd026d5f5f360b9cb1062403c6c43
--- /dev/null
+++ b/train/mermaid/hard/mermaid_505.mmd
@@ -0,0 +1,91 @@
+graph RL
+    N0([start])
+    N1[Search Engine Ads]
+    N2{Return on Ad Spend Calculation}
+    N3(Video Advertising)
+    N4[(Native Advertising)]
+    N5([Conversion Tracking])
+    N6[/Radio Advertising/]
+    N7([Media Buying])
+    N8(Programmatic Advertising)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M2(( ))
+    subgraph Audience Segmentation for Ads
+        nest0_0[(Psychographic Targeting)]
+        nest0_1[[Performance Tracking]]
+        nest0_2{Interactive Ad Formats}
+    end
+    subgraph Visual Design for Ads
+        nest1_0[Display Advertising]
+        nest1_1[(Ad Analytics Reporting)]
+        nest1_2[Direct Response Campaigns]
+    end
+    N0 --> |no| N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N4 --> nest0_0
+    nest0_2 --> N4
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N6 -.-> nest1_0
+    nest1_2 -.-> N2
+    N0 -.-> S0
+    S0 --> N5
+    S0 -.-> N8
+    S0 -.-> N4
+    N3 --> S1
+    S1 -.-> N6
+    S1 -.-> N8
+    S1 -.-> N7
+    N1 --> S2
+    S2 --> N7
+    S2 --> |yes| N6
+    S2 --> N8
+    N5 -.-> M2
+    N3 -.-> M2
+    M2 -.-> N8
+    style S0 fill:#FFF3E0,stroke:#FFA726
+    style S1 fill:#FFF3E0,stroke:#FFA726
+    style S2 fill:#FFF3E0,stroke:#FFA726
+    style M2 fill:#FFF3E0,stroke:#FFA726
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFF9AE,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_506.mmd b/train/mermaid/hard/mermaid_506.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c46d99217a735c1a425c0ee559d5b2af8817ed86
--- /dev/null
+++ b/train/mermaid/hard/mermaid_506.mmd
@@ -0,0 +1,130 @@
+graph RL
+    N0([start])
+    N1[(Direct Response Campaigns)]
+    N2(Visual Design for Ads)
+    N3(Search Engine Ads)
+    N4[[Landing Page Optimization]]
+    N5[[Performance Tracking]]
+    N6[(Print Advertising)]
+    N7[[Ad Network Management]]
+    N8[(Ad Analytics Reporting)]
+    N9([Geo_Targeting])
+    N10([Competitor Ad Analysis])
+    N11([Media Buying])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Regulatory Compliance for Ads
+        nest0_0([A or B Testing for Ads])
+        nest0_1[/Psychographic Targeting/]
+        nest0_2[Budget Management]
+    end
+    subgraph Ad Copywriting
+        nest1_0[(Audience Targeting)]
+        nest1_1[Conversion Tracking]
+        nest1_2[(Fraud Detection in Ads)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> |detects fraud| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N8 -.-> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N10 -.-> nest1_0
+    nest1_2 --> N1
+    N6 -.-> S0
+    S0 --> |plans campaigns| N11
+    S0 -.-> N9
+    S0 --> N8
+    N4 -.-> S1
+    S1 --> N8
+    S1 -.-> N10
+    S1 -.-> N7
+    N5 -.-> S2
+    S2 --> N7
+    S2 --> N10
+    S2 -.-> |segments audiences| N11
+    N4 --> M0
+    N5 -.-> |uses geo_targeting| M0
+    N2 --> M0
+    M0 -.-> N8
+    N2 -.-> M2
+    N1 --> M2
+    N0 --> |digital advertising| M2
+    M2 --> N5
+    style N0 fill:#EDE7F6,stroke:#9575CD
+    style N1 fill:#EDE7F6,stroke:#9575CD
+    style N2 fill:#FFF0CC,stroke:#FFCC80
+    style N3 fill:#FFF0CC,stroke:#FFCC80
+    style N4 fill:#D6D9F0,stroke:#9FA9E1
+    style N5 fill:#FFF0CC,stroke:#FFCC80
+    style N6 fill:#D6D9F0,stroke:#9FA9E1
+    style N7 fill:#FFF0CC,stroke:#FFCC80
+    style N8 fill:#D6D9F0,stroke:#9FA9E1
+    style N9 fill:#D6D9F0,stroke:#9FA9E1
+    style N10 fill:#FFF0CC,stroke:#FFCC80
+    style N11 fill:#EDE7F6,stroke:#9575CD
+    style S0 fill:#EDE7F6,stroke:#9575CD
+    style S1 fill:#D6D9F0,stroke:#9FA9E1
+    style S2 fill:#FFF0CC,stroke:#FFCC80
+    style M0 fill:#FFF0CC,stroke:#FFCC80
+    style M2 fill:#FFF0CC,stroke:#FFCC80
+    style nest0_0 fill:#EDE7F6,stroke:#9575CD
+    style nest0_1 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest1_0 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_1 fill:#EDE7F6,stroke:#9575CD
+    style nest1_2 fill:#FFF0CC,stroke:#FFCC80
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#9575CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_507.mmd b/train/mermaid/hard/mermaid_507.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c806816cba0f37bacf4059359520074b66b0915a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_507.mmd
@@ -0,0 +1,130 @@
+graph TD
+    N0([start])
+    N1[[Performance Tracking]]
+    N2(Regulatory Compliance for Ads)
+    N3[[Campaign Planning]]
+    N4(Ad Copywriting)
+    N5[Customer Acquisition Cost Analysis]
+    N6(Retargeting Campaigns)
+    N7[Ad Platform Management]
+    N8{Outdoor Advertising}
+    N9[/Direct Response Campaigns/]
+    N10(Fraud Detection in Ads)
+    N11[[Ad Network Management]]
+    N12(Search Engine Ads)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Budget Management
+        nest0_0[/Demographic Targeting/]
+        nest0_1{Geo_Targeting}
+        nest0_2[/Return on Ad Spend Calculation/]
+    end
+    subgraph Display Advertising
+        nest1_0(Psychographic Targeting)
+        nest1_1[/Privacy Concerns in Ads/]
+        nest1_2(Programmatic Advertising)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> |selects platforms| N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N10 -.-> nest0_0
+    nest0_2 --> N6
+    nest1_0 --> nest1_1
+    nest1_1 -.-> |television ads| nest1_2
+    N4 --> nest1_0
+    nest1_2 --> |creates ads| N9
+    N8 --> S0
+    S0 -.-> N12
+    S0 -.-> N10
+    N3 --> S1
+    S1 --> N9
+    S1 --> N11
+    N0 -.-> |tracks performance| M0
+    N4 --> M0
+    N2 --> M0
+    M0 -.-> N8
+    N0 -.-> M1
+    N2 -.-> M1
+    M1 --> N4
+    N7 -.-> |uses geo_targeting| M2
+    N2 --> M2
+    N5 -.-> M2
+    N1 --> |implements retargeting| M2
+    M2 --> N9
+    style N0 fill:#F1F8E9,stroke:#81C784
+    style N1 fill:#F8BBD0,stroke:#E91E63
+    style N2 fill:#F8BBD0,stroke:#E91E63
+    style N3 fill:#F8BBD0,stroke:#E91E63
+    style N4 fill:#C2E8E6,stroke:#61CAC3
+    style N5 fill:#C2E8E6,stroke:#61CAC3
+    style N6 fill:#F1F8E9,stroke:#81C784
+    style N7 fill:#F1F8E9,stroke:#81C784
+    style N8 fill:#C2E8E6,stroke:#61CAC3
+    style N9 fill:#C2E8E6,stroke:#61CAC3
+    style N10 fill:#F1F8E9,stroke:#81C784
+    style N11 fill:#F1F8E9,stroke:#81C784
+    style N12 fill:#F8BBD0,stroke:#E91E63
+    style S0 fill:#F1F8E9,stroke:#81C784
+    style S1 fill:#C2E8E6,stroke:#61CAC3
+    style M0 fill:#F1F8E9,stroke:#81C784
+    style M1 fill:#F1F8E9,stroke:#81C784
+    style M2 fill:#F8BBD0,stroke:#E91E63
+    style nest0_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_1 fill:#F1F8E9,stroke:#81C784
+    style nest0_2 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_2 fill:#F1F8E9,stroke:#81C784
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_507.txt b/train/mermaid/hard/mermaid_507.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a7139bc3ff6258162cda04d274439b8c0f5e56e8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_507.txt
@@ -0,0 +1,39 @@
+<Ad Copywriting, connectedTo, Outdoor Advertising>
+<Ad Copywriting, connectedTo, Psychographic Targeting>
+<Ad Copywriting, selects platforms, Customer Acquisition Cost Analysis>
+<Ad Network Management, connectedTo, Search Engine Ads>
+<Ad Platform Management, connectedTo, Outdoor Advertising>
+<Ad Platform Management, uses geo_targeting, Direct Response Campaigns>
+<Campaign Planning, connectedTo, Ad Copywriting>
+<Campaign Planning, connectedTo, Ad Network Management>
+<Campaign Planning, connectedTo, Direct Response Campaigns>
+<Customer Acquisition Cost Analysis, connectedTo, Direct Response Campaigns>
+<Customer Acquisition Cost Analysis, connectedTo, Retargeting Campaigns>
+<Demographic Targeting, connectedTo, Geo_Targeting>
+<Demographic Targeting, partOf, Budget Management>
+<Direct Response Campaigns, connectedTo, Fraud Detection in Ads>
+<Fraud Detection in Ads, connectedTo, Ad Network Management>
+<Fraud Detection in Ads, connectedTo, Demographic Targeting>
+<Geo_Targeting, connectedTo, Return on Ad Spend Calculation>
+<Geo_Targeting, partOf, Budget Management>
+<Outdoor Advertising, connectedTo, Direct Response Campaigns>
+<Outdoor Advertising, connectedTo, Fraud Detection in Ads>
+<Outdoor Advertising, connectedTo, Search Engine Ads>
+<Performance Tracking, connectedTo, Regulatory Compliance for Ads>
+<Performance Tracking, implements retargeting, Direct Response Campaigns>
+<Privacy Concerns in Ads, partOf, Display Advertising>
+<Privacy Concerns in Ads, television ads, Programmatic Advertising>
+<Programmatic Advertising, creates ads, Direct Response Campaigns>
+<Programmatic Advertising, partOf, Display Advertising>
+<Psychographic Targeting, connectedTo, Privacy Concerns in Ads>
+<Psychographic Targeting, partOf, Display Advertising>
+<Regulatory Compliance for Ads, connectedTo, Ad Copywriting>
+<Regulatory Compliance for Ads, connectedTo, Campaign Planning>
+<Regulatory Compliance for Ads, connectedTo, Direct Response Campaigns>
+<Regulatory Compliance for Ads, connectedTo, Outdoor Advertising>
+<Retargeting Campaigns, connectedTo, Ad Platform Management>
+<Return on Ad Spend Calculation, connectedTo, Retargeting Campaigns>
+<Return on Ad Spend Calculation, partOf, Budget Management>
+<start, connectedTo, Ad Copywriting>
+<start, connectedTo, Performance Tracking>
+<start, tracks performance, Outdoor Advertising>
diff --git a/train/mermaid/hard/mermaid_510.mmd b/train/mermaid/hard/mermaid_510.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..42a5020b33f0c84bb7733861b168b9ce930dd7b7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_510.mmd
@@ -0,0 +1,112 @@
+graph RL
+    N0([start])
+    N1(Psychographic Targeting)
+    N2(Performance Tracking)
+    N3[Regulatory Compliance for Ads]
+    N4(Brand Awareness Campaigns)
+    N5[Digital Advertising]
+    N6(Social Media Ads)
+    N7(Ad Analytics Reporting)
+    N8(Ad Network Management)
+    N9(Media Buying)
+    N10{Retargeting Campaigns}
+    N11[(Return on Ad Spend Calculation)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Display Advertising
+        nest0_0[/Customer Acquisition Cost Analysis/]
+        nest0_1[Audience Targeting]
+        nest0_2{Native Advertising}
+        nest0_3[[Video Advertising]]
+    end
+    subgraph Ad Creative Development
+        nest1_0{Search Engine Ads}
+        nest1_1[[Direct Response Campaigns]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> |yes| nest0_3
+    N10 -.-> nest0_0
+    nest0_3 --> N1
+    nest1_0 --> nest1_1
+    N8 -.-> |yes| nest1_0
+    nest1_1 -.-> N1
+    N1 --> S0
+    S0 -.-> N5
+    S0 --> N11
+    S0 -.-> N6
+    N8 --> S1
+    S1 -.-> N11
+    S1 --> N10
+    N0 -.-> S2
+    S2 --> N5
+    S2 -.-> N11
+    N8 -.-> M0
+    N2 -.-> M0
+    M0 -.-> N10
+    N1 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N6
+    N1 --> M2
+    N3 --> M2
+    M2 -.-> N7
+    style S0 fill:#DFE7EB,stroke:#B0C5CD
+    style S1 fill:#DFE7EB,stroke:#B0C5CD
+    style S2 fill:#DFE7EB,stroke:#B0C5CD
+    style M0 fill:#F1F8E9,stroke:#81C784
+    style M1 fill:#F0F0F0,stroke:#D2D2D2
+    style M2 fill:#F1F8E9,stroke:#81C784
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B0C5CD,stroke-width:2px,fill:none;
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+    linkStyle 26 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#D2D2D2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_511.txt b/train/mermaid/hard/mermaid_511.txt
new file mode 100644
index 0000000000000000000000000000000000000000..708892c9573ced73fb9809f2cb7aa7828721c1c8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_511.txt
@@ -0,0 +1,38 @@
+<Ad Network Management, connectedTo, Print Advertising>
+<Ad Network Management, partOf, Video Advertising>
+<Ad Placement Optimization, connectedTo, Ad Network Management>
+<Ad Placement Optimization, partOf, Video Advertising>
+<Audience Targeting, connectedTo, Regulatory Compliance for Ads>
+<Audience Targeting, partOf, Programmatic Advertising>
+<Brand Awareness Campaigns, connectedTo, A or B Testing for Ads>
+<Budget Management, connectedTo, A or B Testing for Ads>
+<Budget Management, connectedTo, Brand Awareness Campaigns>
+<Budget Management, connectedTo, Outdoor Advertising>
+<Budget Management, connectedTo, Print Advertising>
+<Budget Management, connectedTo, Radio Advertising>
+<Conversion Tracking, connectedTo, Radio Advertising>
+<Conversion Tracking, connectedTo, Social Media Ads>
+<Digital Advertising, connectedTo, Brand Awareness Campaigns>
+<Digital Advertising, connectedTo, Interactive Ad Formats>
+<Display Advertising, connectedTo, Retargeting Campaigns>
+<Geo_Targeting, connectedTo, Audience Targeting>
+<Geo_Targeting, connectedTo, Conversion Tracking>
+<Geo_Targeting, connectedTo, Radio Advertising>
+<Interactive Ad Formats, connectedTo, Budget Management>
+<Outdoor Advertising, connectedTo, Search Engine Ads>
+<Outdoor Advertising, partOf, Video Advertising>
+<Print Advertising, connectedTo, Brand Awareness Campaigns>
+<Radio Advertising, connectedTo, Print Advertising>
+<Regulatory Compliance for Ads, no, Visual Design for Ads>
+<Regulatory Compliance for Ads, partOf, Programmatic Advertising>
+<Retargeting Campaigns, no, Geo_Targeting>
+<Search Engine Ads, connectedTo, Ad Placement Optimization>
+<Search Engine Ads, partOf, Video Advertising>
+<Social Media Ads, connectedTo, Digital Advertising>
+<Social Media Ads, connectedTo, Radio Advertising>
+<Visual Design for Ads, connectedTo, Radio Advertising>
+<Visual Design for Ads, partOf, Programmatic Advertising>
+<start, connectedTo, Brand Awareness Campaigns>
+<start, connectedTo, Budget Management>
+<start, connectedTo, Display Advertising>
+<start, connectedTo, Radio Advertising>
diff --git a/train/mermaid/hard/mermaid_512.txt b/train/mermaid/hard/mermaid_512.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c690b3461572f341ee80dc51ea5200328cb887f2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_512.txt
@@ -0,0 +1,29 @@
+<A or B Testing for Ads, connectedTo, Outdoor Advertising>
+<A or B Testing for Ads, connectedTo, Radio Advertising>
+<Ad Copywriting, connectedTo, Brand Awareness Campaigns>
+<Ad Creative Development, connectedTo, Audience Targeting>
+<Ad Creative Development, connectedTo, Programmatic Advertising>
+<Ad Creative Development, connectedTo, Visual Design for Ads>
+<Audience Segmentation for Ads, connectedTo, Performance Tracking>
+<Audience Segmentation for Ads, partOf, Geo_Targeting>
+<Audience Targeting, connectedTo, Visual Design for Ads>
+<Brand Awareness Campaigns, connectedTo, Ad Creative Development>
+<Brand Awareness Campaigns, connectedTo, Audience Targeting>
+<Brand Awareness Campaigns, connectedTo, Programmatic Advertising>
+<Campaign Planning, connectedTo, Ad Copywriting>
+<Campaign Planning, partOf, Media Buying>
+<Competitor Ad Analysis, connectedTo, Campaign Planning>
+<Competitor Ad Analysis, partOf, Media Buying>
+<Outdoor Advertising, connectedTo, Audience Segmentation for Ads>
+<Outdoor Advertising, connectedTo, Programmatic Advertising>
+<Outdoor Advertising, connectedTo, Social Media Ads>
+<Performance Tracking, connectedTo, A or B Testing for Ads>
+<Performance Tracking, partOf, Geo_Targeting>
+<Programmatic Advertising, connectedTo, Audience Targeting>
+<Radio Advertising, connectedTo, Competitor Ad Analysis>
+<Radio Advertising, partOf, Media Buying>
+<Social Media Ads, connectedTo, Ad Copywriting>
+<Social Media Ads, connectedTo, Programmatic Advertising>
+<start, connectedTo, A or B Testing for Ads>
+<start, connectedTo, Outdoor Advertising>
+<start, manages budgets, Brand Awareness Campaigns>
diff --git a/train/mermaid/hard/mermaid_513.txt b/train/mermaid/hard/mermaid_513.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8666baaf2c88ee0d999b8845e5a43e955c54d047
--- /dev/null
+++ b/train/mermaid/hard/mermaid_513.txt
@@ -0,0 +1,43 @@
+<Blockchain Node Operation, connectedTo, Regulatory Compliance for Blockchain>
+<Consensus Mechanism Development, connectedTo, Public Blockchain Deployment>
+<Consensus Mechanism Development, partOf, Cryptographic Hashing>
+<Decentralized Finance Protocols, connectedTo, Initial Coin Offerings>
+<Decentralized Finance Protocols, partOf, Identity Verification on Blockchain>
+<Decentralized Network Design, connectedTo, Governance Models for Blockchains>
+<Gaming on Blockchain, connectedTo, Real Estate Tokenization>
+<Governance Models for Blockchains, ensures compliance, end>
+<Healthcare Data Management, connectedTo, Consensus Mechanism Development>
+<Healthcare Data Management, partOf, Cryptographic Hashing>
+<Initial Coin Offerings, manages networks, Smart Contract Development>
+<Initial Coin Offerings, partOf, Identity Verification on Blockchain>
+<Intellectual Property Management, connectedTo, Blockchain Node Operation>
+<Intellectual Property Management, connectedTo, Decentralized Finance Protocols>
+<Intellectual Property Management, connectedTo, end>
+<Non_Fungible Token Creation, connectedTo, Gaming on Blockchain>
+<Non_Fungible Token Creation, connectedTo, Sidechains and Layer 2 Solutions>
+<Private Blockchain Implementation, connectedTo, Intellectual Property Management>
+<Private Blockchain Implementation, connectedTo, Real Estate Tokenization>
+<Private Blockchain Implementation, connectedTo, Tokenomics Design>
+<Private Blockchain Implementation, connectedTo, Transaction Verification>
+<Private Blockchain Implementation, sets up environments, Non_Fungible Token Creation>
+<Public Blockchain Deployment, connectedTo, Blockchain Node Operation>
+<Public Blockchain Deployment, connectedTo, Smart Contract Development>
+<Public Blockchain Deployment, deploys solutions, Decentralized Network Design>
+<Real Estate Tokenization, connectedTo, Public Blockchain Deployment>
+<Regulatory Compliance for Blockchain, connectedTo, Security Auditing for Blockchains>
+<Regulatory Compliance for Blockchain, connectedTo, end>
+<Security Auditing for Blockchains, connectedTo, Decentralized Network Design>
+<Security Auditing for Blockchains, connectedTo, end>
+<Sidechains and Layer 2 Solutions, connectedTo, Supply Chain Traceability>
+<Sidechains and Layer 2 Solutions, traces provenance, Gaming on Blockchain>
+<Smart Contract Development, connectedTo, Healthcare Data Management>
+<Smart Contract Development, identifies users, Tokenomics Design>
+<Supply Chain Traceability, connectedTo, Gaming on Blockchain>
+<Tokenomics Design, connectedTo, Intellectual Property Management>
+<Transaction Verification, connectedTo, Non_Fungible Token Creation>
+<start, connectedTo, Blockchain Node Operation>
+<start, connectedTo, Non_Fungible Token Creation>
+<start, connectedTo, Private Blockchain Implementation>
+<start, connectedTo, Public Blockchain Deployment>
+<start, connectedTo, Tokenomics Design>
+<start, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_516.mmd b/train/mermaid/hard/mermaid_516.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5379e6c5336e55e8237f5f69b0c11bda1fb3c359
--- /dev/null
+++ b/train/mermaid/hard/mermaid_516.mmd
@@ -0,0 +1,150 @@
+graph LR
+    N0([Scalability Solutions])
+    N1(Distributed Ledger Technology)
+    N2[/Healthcare Data Management/]
+    N3{Mining Operations}
+    N4[Governance Models for Blockchains]
+    N5{Digital Identity Management}
+    N6(Sidechains and Layer 2 Solutions)
+    N7{Decentralized Network Design}
+    N8[(Public Blockchain Deployment)]
+    N9[[Wallet Management]]
+    N10[(Consensus Mechanism Development)]
+    N11[(Identity Verification on Blockchain)]
+    N12(Decentralized Finance Protocols)
+    N13([Energy Trading on Blockchain])
+    N14[(Oracles Integration)]
+    N15[[Cryptographic Hashing]]
+    N16[(Cross_Chain Bridges)]
+    N17(Blockchain Node Operation)
+    N18([Security Auditing for Blockchains])
+    N19([Supply Chain Traceability])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Real Estate Tokenization
+        nest0_0[Transaction Verification]
+        nest0_1[/Zero_Knowledge Proofs/]
+        nest0_2(Private Blockchain Implementation)
+        nest0_3(Voting Systems on Blockchain)
+    end
+    subgraph Consortium Blockchain Setup
+        nest1_0[[Sharding Implementation]]
+        nest1_1([Smart Contract Development])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 --> N17
+    N17 -.-> N18
+    N18 -.-> N19
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N9 -.-> nest0_0
+    nest0_3 -.-> N7
+    nest1_0 -.-> nest1_1
+    N15 --> nest1_0
+    nest1_1 -.-> N9
+    N13 -.-> S0
+    S0 -.-> N15
+    S0 --> N18
+    S0 -.-> |optimizes energy| N16
+    S0 --> N19
+    N12 --> S1
+    S1 --> N15
+    S1 --> N19
+    N1 --> M0
+    N0 -.-> M0
+    N5 --> M0
+    M0 --> N7
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N3
+    style N0 fill:#EDE7F6,stroke:#7E57C2
+    style N1 fill:#EDE7F6,stroke:#7E57C2
+    style N2 fill:#E4E0DF,stroke:#BDAFA8
+    style N3 fill:#E8EAF6,stroke:#7986CB
+    style N4 fill:#E8EAF6,stroke:#7986CB
+    style N5 fill:#EDE7F6,stroke:#7E57C2
+    style N6 fill:#E4E0DF,stroke:#BDAFA8
+    style N7 fill:#E4E0DF,stroke:#BDAFA8
+    style N8 fill:#EDE7F6,stroke:#7E57C2
+    style N9 fill:#E8EAF6,stroke:#7986CB
+    style N10 fill:#E4E0DF,stroke:#BDAFA8
+    style N11 fill:#E8EAF6,stroke:#7986CB
+    style N12 fill:#E4E0DF,stroke:#BDAFA8
+    style N13 fill:#E8EAF6,stroke:#7986CB
+    style N14 fill:#E8EAF6,stroke:#7986CB
+    style N15 fill:#E8EAF6,stroke:#7986CB
+    style N16 fill:#E8EAF6,stroke:#7986CB
+    style N17 fill:#EDE7F6,stroke:#7E57C2
+    style N18 fill:#E8EAF6,stroke:#7986CB
+    style N19 fill:#E8EAF6,stroke:#7986CB
+    style S0 fill:#E4E0DF,stroke:#BDAFA8
+    style S1 fill:#E8EAF6,stroke:#7986CB
+    style M0 fill:#EDE7F6,stroke:#7E57C2
+    style M1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_0 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_2 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_3 fill:#E4E0DF,stroke:#BDAFA8
+    style nest1_0 fill:#E4E0DF,stroke:#BDAFA8
+    style nest1_1 fill:#EDE7F6,stroke:#7E57C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#7E57C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_517.mmd b/train/mermaid/hard/mermaid_517.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..68bb54b59266b8f83631eef525c134898c5a679f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_517.mmd
@@ -0,0 +1,102 @@
+graph RL
+    N0([start])
+    N1[Smart Contract Development]
+    N2(Enterprise Blockchain Solutions)
+    N3[(Interoperability Solutions)]
+    N4{Cross_Chain Bridges}
+    N5[Consortium Blockchain Setup]
+    N6[/Regulatory Compliance for Blockchain/]
+    N7{Identity Verification on Blockchain}
+    N8{Initial Coin Offerings}
+    N9(Private Blockchain Implementation)
+    N10[(Sidechains and Layer 2 Solutions)]
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Mining Operations
+        nest0_0([Healthcare Data Management])
+        nest0_1(Supply Chain Traceability)
+    end
+    subgraph Real Estate Tokenization
+        nest1_0[Financial Asset Tokenization]
+        nest1_1[Oracles Integration]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |deploys solutions| N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    N7 --> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 --> |verifies transactions| nest1_1
+    N5 --> nest1_0
+    nest1_1 -.-> |manages real estate| N3
+    N1 -.-> S1
+    S1 -.-> N4
+    S1 -.-> N9
+    N4 -.-> S2
+    S2 -.-> N8
+    S2 --> N9
+    N4 --> |educates users| M0
+    N2 --> M0
+    N7 --> M0
+    M0 -.-> N9
+    N1 --> |designs protocols| M2
+    N0 --> M2
+    M2 --> N5
+    style N0 fill:#B3E5FC,stroke:#03A9F4
+    style N1 fill:#FFFDE7,stroke:#FFF176
+    style N2 fill:#FFFDE7,stroke:#FFF176
+    style N3 fill:#FFFDE7,stroke:#FFF176
+    style N4 fill:#B3E5FC,stroke:#03A9F4
+    style N5 fill:#B3E5FC,stroke:#03A9F4
+    style N6 fill:#B3E5FC,stroke:#03A9F4
+    style N7 fill:#FFFDE7,stroke:#FFF176
+    style N8 fill:#FFFDE7,stroke:#FFF176
+    style N9 fill:#FFFDE7,stroke:#FFF176
+    style N10 fill:#FAEBF3,stroke:#F7BEE0
+    style S1 fill:#B3E5FC,stroke:#03A9F4
+    style S2 fill:#B3E5FC,stroke:#03A9F4
+    style M0 fill:#FFFDE7,stroke:#FFF176
+    style M2 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_1 fill:#FFFDE7,stroke:#FFF176
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F7BEE0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_518.txt b/train/mermaid/hard/mermaid_518.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9f7cd8f3f079961bca7b488a86a1602a801807eb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_518.txt
@@ -0,0 +1,33 @@
+<Blockchain Node Operation, connectedTo, Distributed Ledger Technology>
+<Blockchain Node Operation, connectedTo, Energy Trading on Blockchain>
+<Blockchain Node Operation, connectedTo, Real Estate Tokenization>
+<Blockchain Node Operation, connectedTo, Security Auditing for Blockchains>
+<Blockchain Node Operation, connectedTo, Transaction Verification>
+<Blockchain Node Operation, connectedTo, Wallet Management>
+<Blockchain Node Operation, connectedTo, Zero_Knowledge Proofs>
+<Blockchain Node Operation, educates users, Sidechains and Layer 2 Solutions>
+<Consensus Mechanism Development, connectedTo, Real Estate Tokenization>
+<Consensus Mechanism Development, partOf, Security Token Offerings>
+<Distributed Ledger Technology, connectedTo, Sidechains and Layer 2 Solutions>
+<Energy Trading on Blockchain, connectedTo, Voting Systems on Blockchain>
+<Energy Trading on Blockchain, partOf, Security Token Offerings>
+<Financial Asset Tokenization, connectedTo, Blockchain Node Operation>
+<Governance Models for Blockchains, connectedTo, Non_Fungible Token Creation>
+<Governance Models for Blockchains, partOf, Digital Identity Management>
+<Non_Fungible Token Creation, connectedTo, Real Estate Tokenization>
+<Non_Fungible Token Creation, connectedTo, Zero_Knowledge Proofs>
+<Real Estate Tokenization, connectedTo, Sidechains and Layer 2 Solutions>
+<Real Estate Tokenization, connectedTo, Wallet Management>
+<Real Estate Tokenization, connectedTo, Zero_Knowledge Proofs>
+<Security Auditing for Blockchains, connectedTo, Oracles Integration>
+<Sidechains and Layer 2 Solutions, connectedTo, Security Auditing for Blockchains>
+<Smart Contract Development, connectedTo, Governance Models for Blockchains>
+<Smart Contract Development, partOf, Digital Identity Management>
+<Transaction Verification, connectedTo, Non_Fungible Token Creation>
+<Transaction Verification, connectedTo, Zero_Knowledge Proofs>
+<Voting Systems on Blockchain, connectedTo, Consensus Mechanism Development>
+<Voting Systems on Blockchain, partOf, Security Token Offerings>
+<Wallet Management, connectedTo, Sidechains and Layer 2 Solutions>
+<Wallet Management, connectedTo, Smart Contract Development>
+<Wallet Management, connectedTo, Zero_Knowledge Proofs>
+<Zero_Knowledge Proofs, connectedTo, Distributed Ledger Technology>
diff --git a/train/mermaid/hard/mermaid_52.mmd b/train/mermaid/hard/mermaid_52.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..dbd50ff56c2ec1983d3fa2c9302cbd738d8a9c60
--- /dev/null
+++ b/train/mermaid/hard/mermaid_52.mmd
@@ -0,0 +1,144 @@
+graph BT
+    N0([Geothermal Power])
+    N1[Hydropower Generation]
+    N2[(Usage Billing)]
+    N3[Peak Shaving]
+    N4[/Nuclear Reactor Control/]
+    N5(Carbon Capture)
+    N6(Circuit Breaker Operation)
+    N7(Power Backup)
+    N8[Solar Panel Installation]
+    N9[/Grid Balancing/]
+    N10[Cybersecurity for Grid]
+    N11[Power Purchase]
+    N12([Energy Infrastructure Planning])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Consumption Logging
+        nest0_0[/Fuel Delivery/]
+        nest0_1(Voltage Regulation)
+        nest0_2(Demand Forecast)
+        nest0_3[/Energy Market Analysis/]
+    end
+    subgraph Wind Turbine Monitoring
+        nest1_0{Alert Dispatch}
+        nest1_1(Distributed Generation Management)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N2 -.-> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 --> nest1_1
+    N4 -.-> nest1_0
+    nest1_1 -.-> |consumes| N5
+    N2 -.-> S0
+    S0 --> N4
+    S0 --> N5
+    N3 -.-> S1
+    S1 -.-> N9
+    S1 -.-> N10
+    S1 -.-> N7
+    S1 --> N8
+    N1 --> S2
+    S2 --> N9
+    S2 --> N6
+    S2 --> N7
+    N2 --> M0
+    N1 --> M0
+    M0 --> N4
+    N0 -.-> M1
+    N3 --> M1
+    N5 -.-> M1
+    N1 -.-> M1
+    M1 --> N7
+    N1 --> M2
+    N5 -.-> M2
+    N3 -.-> M2
+    M2 --> N10
+    style N0 fill:#FFF6D9,stroke:#FFCC7A
+    style N1 fill:#FFF6D9,stroke:#FFCC7A
+    style N2 fill:#F5F5DC,stroke:#BCB88A
+    style N3 fill:#FFF6D9,stroke:#FFCC7A
+    style N4 fill:#FFF6D9,stroke:#FFCC7A
+    style N5 fill:#F5F5DC,stroke:#BCB88A
+    style N6 fill:#B2EBF2,stroke:#00BCD4
+    style N7 fill:#B2EBF2,stroke:#00BCD4
+    style N8 fill:#FFF6D9,stroke:#FFCC7A
+    style N9 fill:#FFF6D9,stroke:#FFCC7A
+    style N10 fill:#F5F5DC,stroke:#BCB88A
+    style N11 fill:#B2EBF2,stroke:#00BCD4
+    style N12 fill:#F5F5DC,stroke:#BCB88A
+    style S0 fill:#FFF6D9,stroke:#FFCC7A
+    style S1 fill:#B2EBF2,stroke:#00BCD4
+    style S2 fill:#FFF6D9,stroke:#FFCC7A
+    style M0 fill:#FFF6D9,stroke:#FFCC7A
+    style M1 fill:#F5F5DC,stroke:#BCB88A
+    style M2 fill:#FFF6D9,stroke:#FFCC7A
+    style nest0_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_1 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_2 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_3 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_0 fill:#FFF6D9,stroke:#FFCC7A
+    style nest1_1 fill:#FFF6D9,stroke:#FFCC7A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_52.txt b/train/mermaid/hard/mermaid_52.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6254c4fc37e260c3bcc19a113992a7b9d3c230ac
--- /dev/null
+++ b/train/mermaid/hard/mermaid_52.txt
@@ -0,0 +1,40 @@
+<Alert Dispatch, connectedTo, Distributed Generation Management>
+<Alert Dispatch, partOf, Wind Turbine Monitoring>
+<Carbon Capture, connectedTo, Circuit Breaker Operation>
+<Carbon Capture, connectedTo, Cybersecurity for Grid>
+<Carbon Capture, connectedTo, Power Backup>
+<Circuit Breaker Operation, connectedTo, Power Backup>
+<Cybersecurity for Grid, connectedTo, Power Purchase>
+<Demand Forecast, connectedTo, Energy Market Analysis>
+<Demand Forecast, partOf, Consumption Logging>
+<Distributed Generation Management, consumes, Carbon Capture>
+<Distributed Generation Management, partOf, Wind Turbine Monitoring>
+<Energy Market Analysis, connectedTo, Nuclear Reactor Control>
+<Energy Market Analysis, partOf, Consumption Logging>
+<Fuel Delivery, connectedTo, Voltage Regulation>
+<Fuel Delivery, partOf, Consumption Logging>
+<Geothermal Power, connectedTo, Hydropower Generation>
+<Geothermal Power, connectedTo, Power Backup>
+<Grid Balancing, connectedTo, Cybersecurity for Grid>
+<Hydropower Generation, connectedTo, Circuit Breaker Operation>
+<Hydropower Generation, connectedTo, Cybersecurity for Grid>
+<Hydropower Generation, connectedTo, Grid Balancing>
+<Hydropower Generation, connectedTo, Nuclear Reactor Control>
+<Hydropower Generation, connectedTo, Power Backup>
+<Hydropower Generation, connectedTo, Usage Billing>
+<Nuclear Reactor Control, connectedTo, Alert Dispatch>
+<Nuclear Reactor Control, connectedTo, Carbon Capture>
+<Peak Shaving, connectedTo, Cybersecurity for Grid>
+<Peak Shaving, connectedTo, Grid Balancing>
+<Peak Shaving, connectedTo, Nuclear Reactor Control>
+<Peak Shaving, connectedTo, Power Backup>
+<Peak Shaving, connectedTo, Solar Panel Installation>
+<Power Backup, connectedTo, Solar Panel Installation>
+<Power Purchase, connectedTo, Energy Infrastructure Planning>
+<Solar Panel Installation, connectedTo, Grid Balancing>
+<Usage Billing, connectedTo, Carbon Capture>
+<Usage Billing, connectedTo, Fuel Delivery>
+<Usage Billing, connectedTo, Nuclear Reactor Control>
+<Usage Billing, connectedTo, Peak Shaving>
+<Voltage Regulation, connectedTo, Demand Forecast>
+<Voltage Regulation, partOf, Consumption Logging>
diff --git a/train/mermaid/hard/mermaid_520.mmd b/train/mermaid/hard/mermaid_520.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..945e25fcb83fa720014762b5db887787ed0eb006
--- /dev/null
+++ b/train/mermaid/hard/mermaid_520.mmd
@@ -0,0 +1,112 @@
+graph TD
+    N0([start])
+    N1[/Cryptographic Hashing/]
+    N2(Security Auditing for Blockchains)
+    N3(Identity Verification on Blockchain)
+    N4[(Distributed Ledger Technology)]
+    N5{Zero_Knowledge Proofs}
+    N6(Decentralized Finance Protocols)
+    N7(Initial Coin Offerings)
+    N8[(Energy Trading on Blockchain)]
+    N9[[Sharding Implementation]]
+    N10[(Digital Identity Management)]
+    N11[/Tokenomics Design/]
+    N12[/Healthcare Data Management/]
+    N13([Cross_Border Payments])
+    N14(Interoperability Solutions)
+    N15{Security Token Offerings}
+    N16(Real Estate Tokenization)
+    N17([Public Blockchain Deployment])
+    N18[[Wallet Management]]
+    N19([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Voting Systems on Blockchain
+        nest0_0(Governance Models for Blockchains)
+        nest0_1{Regulatory Compliance for Blockchain}
+    end
+    subgraph Decentralized Network Design
+        nest1_0(Mining Operations)
+        nest1_1(Intellectual Property Management)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 --> N18
+    N18 -.-> N19
+    nest0_0 --> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 --> N2
+    nest1_0 -.-> nest1_1
+    N16 --> nest1_0
+    nest1_1 -.-> N17
+    N3 -.-> S0
+    S0 --> N17
+    S0 --> N13
+    N0 -.-> S1
+    S1 --> N18
+    S1 -.-> N5
+    N2 -.-> M0
+    N3 -.-> M0
+    M0 -.-> N16
+    N2 --> M1
+    N7 -.-> M1
+    M1 --> N13
+    style S0 fill:#D3D7EB,stroke:#8C9EFF
+    style S1 fill:#FFF3E0,stroke:#FFB74D
+    style M0 fill:#D3D7EB,stroke:#8C9EFF
+    style M1 fill:#D3D7EB,stroke:#8C9EFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFB74D,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_521.mmd b/train/mermaid/hard/mermaid_521.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ad916fbcb6cf7dda77e4def7bbc99cddb40e9034
--- /dev/null
+++ b/train/mermaid/hard/mermaid_521.mmd
@@ -0,0 +1,146 @@
+graph BT
+    N0([Initial Exchange Offering])
+    N1[[Decentralized Autonomous Organizations]]
+    N2[[Market Analysis]]
+    N3[Portfolio Management]
+    N4[Interoperability Solutions]
+    N5[/Key Management/]
+    N6(GameFi Development)
+    N7[(Hot Wallet Security)]
+    N8[[Smart Contract Auditing]]
+    N9(Yield Farming)
+    N10[/Security Audits/]
+    N11[Cold Storage Solutions]
+    N12[Legal Advisory for Crypto]
+    N13[Staking]
+    N14[Fraud Prevention]
+    N15([Cross_chain Swaps])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Cryptocurrency Education
+        nest0_0[Wallet Development]
+        nest0_1{Venture Capital Funding}
+        nest0_2(Fiat On or Off Ramps)
+    end
+    subgraph Custodial Services
+        nest1_0{Lending and Borrowing Protocols}
+        nest1_1{Cryptocurrency Trading Bots}
+        nest1_2[[Regulatory Compliance]]
+        nest1_3(Exchange Listing)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> |stakes assets| N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N2 --> nest0_0
+    nest0_2 --> N9
+    nest1_0 -.-> |governs DAOs| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N11 --> nest1_0
+    nest1_3 -.-> N4
+    N6 -.-> S0
+    S0 --> N10
+    S0 --> N15
+    N1 -.-> S1
+    S1 --> N10
+    S1 --> N11
+    S1 --> N8
+    N7 -.-> S2
+    S2 --> N9
+    S2 -.-> |ensures compliance| N13
+    S2 --> N10
+    N2 --> M0
+    N3 -.-> M0
+    M0 --> N7
+    N2 -.-> M1
+    N6 -.-> M1
+    N3 -.-> M1
+    M1 --> N9
+    style N0 fill:#EFE6FF,stroke:#C2B2F0
+    style N1 fill:#DACBE3,stroke:#A188D0
+    style N2 fill:#FFF9D4,stroke:#FFE69C
+    style N3 fill:#FFF9D4,stroke:#FFE69C
+    style N4 fill:#DACBE3,stroke:#A188D0
+    style N5 fill:#EFE6FF,stroke:#C2B2F0
+    style N6 fill:#DACBE3,stroke:#A188D0
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style N8 fill:#FFF9D4,stroke:#FFE69C
+    style N9 fill:#EFE6FF,stroke:#C2B2F0
+    style N10 fill:#DACBE3,stroke:#A188D0
+    style N11 fill:#DACBE3,stroke:#A188D0
+    style N12 fill:#FFF9D4,stroke:#FFE69C
+    style N13 fill:#DACBE3,stroke:#A188D0
+    style N14 fill:#FFF9D4,stroke:#FFE69C
+    style N15 fill:#DACBE3,stroke:#A188D0
+    style S0 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#FFF9D4,stroke:#FFE69C
+    style S2 fill:#EFE6FF,stroke:#C2B2F0
+    style M0 fill:#DACBE3,stroke:#A188D0
+    style M1 fill:#EFE6FF,stroke:#C2B2F0
+    style nest0_0 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_1 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_2 fill:#DACBE3,stroke:#A188D0
+    style nest1_0 fill:#FFF9D4,stroke:#FFE69C
+    style nest1_1 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_2 fill:#DACBE3,stroke:#A188D0
+    style nest1_3 fill:#DACBE3,stroke:#A188D0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#C2B2F0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_522.mmd b/train/mermaid/hard/mermaid_522.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..33c97983c5e5f0b27f18fbfc3334cda6c664b0fb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_522.mmd
@@ -0,0 +1,110 @@
+graph BT
+    N0([start])
+    N1[Mining Algorithm Design]
+    N2[(Coin Creation)]
+    N3([Regulatory Compliance])
+    N4(Decentralized Autonomous Organizations)
+    N5[Yield Farming]
+    N6(Cold Storage Solutions)
+    N7[[Initial Exchange Offering]]
+    N8[Decentralized Exchange Operation]
+    N9[Market Analysis]
+    N10(Blockchain Explorers)
+    N11([Fiat On or Off Ramps])
+    N12(Venture Capital Funding)
+    N13[/Lending and Borrowing Protocols/]
+    N14[/Portfolio Management/]
+    N15{GameFi Development}
+    N16(NFT Marketplace Development)
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Stablecoin Design
+        nest0_0(Wallet Development)
+        nest0_1[[Interoperability Solutions]]
+    end
+    subgraph Token Generation Event
+        nest1_0([Community Building])
+        nest1_1([Airdrop Campaigns])
+        nest1_2[(KYC or AML Procedures)]
+        nest1_3[Exchange Listing]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> |yes| N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    nest0_0 --> nest0_1
+    N9 -.-> nest0_0
+    nest0_1 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N13 --> nest1_0
+    nest1_3 -.-> N11
+    N13 -.-> S0
+    S0 --> N16
+    S0 -.-> N15
+    S0 -.-> N17
+    N9 -.-> S1
+    S1 --> N12
+    S1 --> |no| N11
+    S1 -.-> N14
+    S1 --> N16
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N3
+    style S0 fill:#FFF9C4,stroke:#FFEB3B
+    style S1 fill:#FFF9C4,stroke:#FFEB3B
+    style M1 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#F06292,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_523.txt b/train/mermaid/hard/mermaid_523.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c6a3425e312b863af9259bbc546018bccbaaa190
--- /dev/null
+++ b/train/mermaid/hard/mermaid_523.txt
@@ -0,0 +1,36 @@
+<Blockchain Explorers, connectedTo, Coin Creation>
+<Blockchain Explorers, connectedTo, Staking>
+<Blockchain Integration, connectedTo, Blockchain Explorers>
+<Blockchain Integration, connectedTo, Coin Creation>
+<Blockchain Integration, connectedTo, Staking>
+<Blockchain Integration, connectedTo, Transaction Processing>
+<Coin Creation, connectedTo, Lending and Borrowing Protocols>
+<Cold Storage Solutions, connectedTo, Stablecoin Design>
+<Cold Storage Solutions, partOf, Fraud Prevention>
+<Community Building, connectedTo, Decentralized Exchange Operation>
+<Community Building, partOf, Key Management>
+<Cryptocurrency Trading Bots, connectedTo, Coin Creation>
+<Cryptocurrency Trading Bots, connectedTo, Cold Storage Solutions>
+<Cryptocurrency Trading Bots, connectedTo, Mining Algorithm Design>
+<Custodial Services, connectedTo, Lending and Borrowing Protocols>
+<Custodial Services, connectedTo, Regulatory Compliance>
+<Custodial Services, connectedTo, Transaction Processing>
+<Decentralized Exchange Operation, connectedTo, Lending and Borrowing Protocols>
+<Decentralized Exchange Operation, partOf, Key Management>
+<Exchange Listing, connectedTo, Regulatory Compliance>
+<GameFi Development, connectedTo, Community Building>
+<GameFi Development, partOf, Key Management>
+<Hot Wallet Security, connectedTo, Initial Exchange Offering>
+<Hot Wallet Security, partOf, Fraud Prevention>
+<Initial Exchange Offering, connectedTo, Lending and Borrowing Protocols>
+<Initial Exchange Offering, partOf, Fraud Prevention>
+<Lending and Borrowing Protocols, connectedTo, Exchange Listing>
+<Mining Algorithm Design, connectedTo, Coin Creation>
+<Portfolio Management, connectedTo, Blockchain Integration>
+<Portfolio Management, connectedTo, Staking>
+<Stablecoin Design, connectedTo, Hot Wallet Security>
+<Stablecoin Design, partOf, Fraud Prevention>
+<Staking, connectedTo, Coin Creation>
+<Staking, connectedTo, Custodial Services>
+<Staking, connectedTo, GameFi Development>
+<Transaction Processing, connectedTo, Cryptocurrency Trading Bots>
diff --git a/train/mermaid/hard/mermaid_524.txt b/train/mermaid/hard/mermaid_524.txt
new file mode 100644
index 0000000000000000000000000000000000000000..26c722b3d9a52d4c27507dfe00c637fb5bd6fe4e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_524.txt
@@ -0,0 +1,48 @@
+<Blockchain Explorers, connectedTo, Blockchain Integration>
+<Blockchain Explorers, connectedTo, Cryptocurrency Trading Bots>
+<Blockchain Explorers, connectedTo, KYC or AML Procedures>
+<Blockchain Integration, connectedTo, Yield Farming>
+<Coin Creation, connectedTo, Hot Wallet Security>
+<Coin Creation, partOf, GameFi Development>
+<Cold Storage Solutions, connectedTo, Tax Reporting for Crypto>
+<Cryptocurrency Trading Bots, connectedTo, Blockchain Integration>
+<Cryptocurrency Trading Bots, connectedTo, Fraud Prevention>
+<Decentralized Autonomous Organizations, connectedTo, Wallet Development>
+<Decentralized Autonomous Organizations, partOf, Cryptocurrency Education>
+<Decentralized Exchange Operation, connectedTo, Legal Advisory for Crypto>
+<Decentralized Exchange Operation, connectedTo, Market Analysis>
+<Decentralized Exchange Operation, connectedTo, Security Audits>
+<Decentralized Exchange Operation, connectedTo, Smart Contract Auditing>
+<Decentralized Exchange Operation, connectedTo, Stablecoin Design>
+<Decentralized Exchange Operation, connectedTo, Venture Capital Funding>
+<Decentralized Exchange Operation, ensures interoperability, Security Audits>
+<Decentralized Exchange Operation, performs KYCs, Stablecoin Design>
+<Fiat On or Off Ramps, connectedTo, Venture Capital Funding>
+<Fiat On or Off Ramps, partOf, Cryptocurrency Education>
+<Fraud Prevention, connectedTo, Blockchain Integration>
+<Fraud Prevention, connectedTo, KYC or AML Procedures>
+<Hot Wallet Security, connectedTo, KYC or AML Procedures>
+<Hot Wallet Security, partOf, GameFi Development>
+<KYC or AML Procedures, connectedTo, Cold Storage Solutions>
+<Legal Advisory for Crypto, connectedTo, Market Analysis>
+<Market Analysis, connectedTo, Security Audits>
+<Mining Algorithm Design, connectedTo, Blockchain Explorers>
+<Mining Algorithm Design, connectedTo, Blockchain Integration>
+<Mining Algorithm Design, connectedTo, KYC or AML Procedures>
+<NFT Marketplace Development, connectedTo, Decentralized Autonomous Organizations>
+<NFT Marketplace Development, partOf, Cryptocurrency Education>
+<Portfolio Management, connectedTo, Coin Creation>
+<Portfolio Management, partOf, GameFi Development>
+<Security Audits, connectedTo, Stablecoin Design>
+<Smart Contract Auditing, connectedTo, Portfolio Management>
+<Smart Contract Auditing, partOf, GameFi Development>
+<Stablecoin Design, connectedTo, NFT Marketplace Development>
+<Stablecoin Design, connectedTo, Venture Capital Funding>
+<Tax Reporting for Crypto, connectedTo, Transaction Processing>
+<Transaction Processing, connectedTo, Decentralized Exchange Operation>
+<Wallet Development, connectedTo, Fiat On or Off Ramps>
+<Wallet Development, partOf, Cryptocurrency Education>
+<Web3 Integration, connectedTo, Blockchain Integration>
+<Web3 Integration, connectedTo, KYC or AML Procedures>
+<Web3 Integration, connectedTo, Mining Algorithm Design>
+<Yield Farming, connectedTo, KYC or AML Procedures>
diff --git a/train/mermaid/hard/mermaid_525.mmd b/train/mermaid/hard/mermaid_525.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e3ac9bcf83e9a2c567242def7fcb96812d8c9d56
--- /dev/null
+++ b/train/mermaid/hard/mermaid_525.mmd
@@ -0,0 +1,126 @@
+graph TD
+    N0([start])
+    N1(Community Building)
+    N2[/Portfolio Management/]
+    N3[GameFi Development]
+    N4[Coin Creation]
+    N5[/Security Audits/]
+    N6[[Legal Advisory for Crypto]]
+    N7[Stablecoin Design]
+    N8[Staking]
+    N9[/NFT Marketplace Development/]
+    N10([Venture Capital Funding])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Liquidity Provision
+        nest0_0(Decentralized Exchange Operation)
+        nest0_1(Blockchain Integration)
+        nest0_2[/Mining Algorithm Design/]
+    end
+    subgraph Cold Storage Solutions
+        nest1_0[/Wallet Development/]
+        nest1_1([Market Analysis])
+        nest1_2([Fraud Prevention])
+        nest1_3[/Exchange Listing/]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N5 --> |ensures interoperability| nest0_0
+    nest0_2 --> N8
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N7 -.-> nest1_0
+    nest1_3 -.-> N2
+    N7 --> S0
+    S0 --> |creates coins| N10
+    S0 --> N9
+    N5 -.-> S1
+    S1 --> N8
+    S1 --> |secures funds| N9
+    S1 -.-> N10
+    N3 -.-> M0
+    N4 --> M0
+    N6 --> M0
+    M0 -.-> N8
+    N3 -.-> M1
+    N6 --> M1
+    N5 -.-> |lists assets| M1
+    M1 --> N10
+    N0 --> |designs tokenomics| M2
+    N1 --> M2
+    M2 --> N3
+    style N0 fill:#E8EAF6,stroke:#5C6BC0
+    style N1 fill:#E8EAF6,stroke:#5C6BC0
+    style N2 fill:#E8EAF6,stroke:#5C6BC0
+    style N3 fill:#E0F2F1,stroke:#26A69A
+    style N4 fill:#FFFAE0,stroke:#FFE470
+    style N5 fill:#FFFAE0,stroke:#FFE470
+    style N6 fill:#E0F2F1,stroke:#26A69A
+    style N7 fill:#FFFAE0,stroke:#FFE470
+    style N8 fill:#E0F2F1,stroke:#26A69A
+    style N9 fill:#FFFAE0,stroke:#FFE470
+    style N10 fill:#FFFAE0,stroke:#FFE470
+    style S0 fill:#FFFAE0,stroke:#FFE470
+    style S1 fill:#E0F2F1,stroke:#26A69A
+    style M0 fill:#E8EAF6,stroke:#5C6BC0
+    style M1 fill:#E0F2F1,stroke:#26A69A
+    style M2 fill:#FFFAE0,stroke:#FFE470
+    style nest0_0 fill:#E0F2F1,stroke:#26A69A
+    style nest0_1 fill:#E8EAF6,stroke:#5C6BC0
+    style nest0_2 fill:#E0F2F1,stroke:#26A69A
+    style nest1_0 fill:#FFFAE0,stroke:#FFE470
+    style nest1_1 fill:#E0F2F1,stroke:#26A69A
+    style nest1_2 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_3 fill:#E8EAF6,stroke:#5C6BC0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#26A69A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_526.txt b/train/mermaid/hard/mermaid_526.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fb4772fc0ae93ff62fa7167499e2c9e1818b5e10
--- /dev/null
+++ b/train/mermaid/hard/mermaid_526.txt
@@ -0,0 +1,33 @@
+<Blockchain Integration, connectedTo, Yield Farming>
+<Coin Creation, connectedTo, Fiat On or Off Ramps>
+<Coin Creation, connectedTo, Portfolio Management>
+<Cold Storage Solutions, connectedTo, Wallet Development>
+<Cold Storage Solutions, partOf, Fraud Prevention>
+<Decentralized Autonomous Organizations, connectedTo, Portfolio Management>
+<Decentralized Autonomous Organizations, connectedTo, Token Generation Event>
+<Exchange Listing, connectedTo, Cold Storage Solutions>
+<Exchange Listing, partOf, Fraud Prevention>
+<Fiat On or Off Ramps, connectedTo, Decentralized Autonomous Organizations>
+<Fiat On or Off Ramps, no, Portfolio Management>
+<Lending and Borrowing Protocols, connectedTo, Exchange Listing>
+<Lending and Borrowing Protocols, partOf, Fraud Prevention>
+<Liquidity Provision, connectedTo, Web3 Integration>
+<Liquidity Provision, partOf, Airdrop Campaigns>
+<Portfolio Management, connectedTo, Staking>
+<Staking, connectedTo, Blockchain Integration>
+<Staking, connectedTo, Key Management>
+<Staking, connectedTo, Yield Farming>
+<Tax Reporting for Crypto, connectedTo, Liquidity Provision>
+<Tax Reporting for Crypto, connectedTo, Venture Capital Funding>
+<Token Generation Event, connectedTo, Lending and Borrowing Protocols>
+<Token Generation Event, connectedTo, Portfolio Management>
+<Venture Capital Funding, connectedTo, Key Management>
+<Wallet Development, connectedTo, Portfolio Management>
+<Wallet Development, partOf, Fraud Prevention>
+<Web3 Integration, connectedTo, Token Generation Event>
+<Web3 Integration, partOf, Airdrop Campaigns>
+<Yield Farming, connectedTo, Key Management>
+<Yield Farming, connectedTo, Tax Reporting for Crypto>
+<Yield Farming, connectedTo, Venture Capital Funding>
+<start, connectedTo, Coin Creation>
+<start, connectedTo, Portfolio Management>
diff --git a/train/mermaid/hard/mermaid_527.mmd b/train/mermaid/hard/mermaid_527.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c6bd95d952515ffd98c7c40fa7d495d98dcc726b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_527.mmd
@@ -0,0 +1,138 @@
+graph LR
+    N0([Key Management])
+    N1[Cold Storage Solutions]
+    N2(Liquidity Provision)
+    N3[[Cross_chain Swaps]]
+    N4([Portfolio Management])
+    N5[[Custodial Services]]
+    N6[[Legal Advisory for Crypto]]
+    N7[Blockchain Integration]
+    N8(Cryptocurrency Education)
+    N9[(Decentralized Exchange Operation)]
+    N10(Regulatory Compliance)
+    N11[GameFi Development]
+    N12(Mining Algorithm Design)
+    N13([Decentralized Autonomous Organizations])
+    N14[(Hot Wallet Security)]
+    N15[[Security Audits]]
+    N16[Airdrop Campaigns]
+    N17{Fiat On or Off Ramps}
+    N18([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph KYC or AML Procedures
+        nest0_0[(Web3 Integration)]
+        nest0_1[[Stablecoin Design]]
+    end
+    subgraph Coin Creation
+        nest1_0(Yield Farming)
+        nest1_1[/NFT Marketplace Development/]
+    end
+    N0 --> N1
+    N1 --> |analyzes markets| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    N17 -.-> N18
+    nest0_0 -.-> nest0_1
+    N15 -.-> |optimizes investments| nest0_0
+    nest0_1 --> N17
+    nest1_0 --> |stakes assets| nest1_1
+    N5 --> nest1_0
+    nest1_1 -.-> N5
+    N3 --> S0
+    S0 -.-> N15
+    S0 -.-> |builds Web3 applications| N11
+    N9 -.-> S1
+    S1 --> N15
+    S1 -.-> |custodies assets| N11
+    S1 --> |explores new chains| N14
+    N2 --> M0
+    N7 -.-> M0
+    N8 --> M0
+    M0 -.-> N11
+    N4 -.-> M1
+    N7 --> M1
+    N10 -.-> M1
+    M1 -.-> N12
+    style N0 fill:#CFD8DC,stroke:#607D8B
+    style N1 fill:#D0EFEE,stroke:#73C6BC
+    style N2 fill:#CFD8DC,stroke:#607D8B
+    style N3 fill:#F1F8FF,stroke:#42A5F5
+    style N4 fill:#F1F8FF,stroke:#42A5F5
+    style N5 fill:#D0EFEE,stroke:#73C6BC
+    style N6 fill:#F1F8FF,stroke:#42A5F5
+    style N7 fill:#D0EFEE,stroke:#73C6BC
+    style N8 fill:#D0EFEE,stroke:#73C6BC
+    style N9 fill:#CFD8DC,stroke:#607D8B
+    style N10 fill:#CFD8DC,stroke:#607D8B
+    style N11 fill:#F1F8FF,stroke:#42A5F5
+    style N12 fill:#D0EFEE,stroke:#73C6BC
+    style N13 fill:#D0EFEE,stroke:#73C6BC
+    style N14 fill:#F1F8FF,stroke:#42A5F5
+    style N15 fill:#D0EFEE,stroke:#73C6BC
+    style N16 fill:#CFD8DC,stroke:#607D8B
+    style N17 fill:#CFD8DC,stroke:#607D8B
+    style N18 fill:#CFD8DC,stroke:#607D8B
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#CFD8DC,stroke:#607D8B
+    style M0 fill:#CFD8DC,stroke:#607D8B
+    style M1 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_1 fill:#CFD8DC,stroke:#607D8B
+    style nest1_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_1 fill:#CFD8DC,stroke:#607D8B
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#73C6BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_527.txt b/train/mermaid/hard/mermaid_527.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e50010f30fc1de32d26e7f32ae04ff7461507dcf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_527.txt
@@ -0,0 +1,39 @@
+<Airdrop Campaigns, connectedTo, Fiat On or Off Ramps>
+<Blockchain Integration, connectedTo, Cryptocurrency Education>
+<Blockchain Integration, connectedTo, GameFi Development>
+<Blockchain Integration, connectedTo, Mining Algorithm Design>
+<Cold Storage Solutions, analyzes markets, Liquidity Provision>
+<Cross_chain Swaps, builds Web3 applications, GameFi Development>
+<Cross_chain Swaps, connectedTo, Portfolio Management>
+<Cross_chain Swaps, connectedTo, Security Audits>
+<Cryptocurrency Education, connectedTo, Decentralized Exchange Operation>
+<Cryptocurrency Education, connectedTo, GameFi Development>
+<Custodial Services, connectedTo, Legal Advisory for Crypto>
+<Custodial Services, connectedTo, Yield Farming>
+<Decentralized Autonomous Organizations, connectedTo, Hot Wallet Security>
+<Decentralized Exchange Operation, connectedTo, Regulatory Compliance>
+<Decentralized Exchange Operation, connectedTo, Security Audits>
+<Decentralized Exchange Operation, custodies assets, GameFi Development>
+<Decentralized Exchange Operation, explores new chains, Hot Wallet Security>
+<Fiat On or Off Ramps, connectedTo, end>
+<GameFi Development, connectedTo, Mining Algorithm Design>
+<Hot Wallet Security, connectedTo, Security Audits>
+<Key Management, connectedTo, Cold Storage Solutions>
+<Legal Advisory for Crypto, connectedTo, Blockchain Integration>
+<Liquidity Provision, connectedTo, Cross_chain Swaps>
+<Liquidity Provision, connectedTo, GameFi Development>
+<Mining Algorithm Design, connectedTo, Decentralized Autonomous Organizations>
+<NFT Marketplace Development, connectedTo, Custodial Services>
+<NFT Marketplace Development, partOf, Coin Creation>
+<Portfolio Management, connectedTo, Custodial Services>
+<Portfolio Management, connectedTo, Mining Algorithm Design>
+<Regulatory Compliance, connectedTo, GameFi Development>
+<Regulatory Compliance, connectedTo, Mining Algorithm Design>
+<Security Audits, connectedTo, Airdrop Campaigns>
+<Security Audits, optimizes investments, Web3 Integration>
+<Stablecoin Design, connectedTo, Fiat On or Off Ramps>
+<Stablecoin Design, partOf, KYC or AML Procedures>
+<Web3 Integration, connectedTo, Stablecoin Design>
+<Web3 Integration, partOf, KYC or AML Procedures>
+<Yield Farming, partOf, Coin Creation>
+<Yield Farming, stakes assets, NFT Marketplace Development>
diff --git a/train/mermaid/hard/mermaid_529.mmd b/train/mermaid/hard/mermaid_529.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ff4b5a1c7792b33eca4c0c6eecf116da9f8c761c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_529.mmd
@@ -0,0 +1,138 @@
+graph BT
+    N0([start])
+    N1(Investor Relations)
+    N2(Real Estate Crowdfunding)
+    N3(Campaign Creation)
+    N4[Legal Compliance]
+    N5[[Product Development Lifecycle]]
+    N6[(Pitch Deck Preparation)]
+    N7{Marketing Strategy}
+    N8[[Intellectual Property Protection]]
+    N9(Success Fee Structures)
+    N10{Backer Communication}
+    N11(Escrow Management)
+    N12[(Due Diligence for Projects)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Email List Building
+        nest0_0[Payment Processing]
+        nest0_1(Community Building)
+        nest0_2(Goal Setting)
+    end
+    subgraph Investor Verification
+        nest1_0(Customer Support for Backers)
+        nest1_1[/Shareholder Management/]
+        nest1_2{Donation_Based Crowdfunding}
+        nest1_3{Manufacturing Planning}
+    end
+    N0 --> |designs rewards| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> |manages shareholders| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> |facilitates equity| N11
+    N11 --> |manages debt| N12
+    nest0_0 --> |handles logistics| nest0_1
+    nest0_1 -.-> nest0_2
+    N10 --> nest0_0
+    nest0_2 -.-> |selects platforms| N9
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N2 --> nest1_0
+    nest1_3 -.-> |ensures compliance| N4
+    N5 -.-> S0
+    S0 --> N10
+    S0 --> N12
+    N1 --> S1
+    S1 -.-> N9
+    S1 --> N12
+    S1 -.-> N5
+    S1 --> N3
+    N8 --> S2
+    S2 -.-> N10
+    S2 -.-> N12
+    S2 --> N11
+    N1 --> M0
+    N2 --> M0
+    N3 --> M0
+    N0 -.-> M0
+    M0 -.-> N5
+    N4 --> M1
+    N3 --> |creates campaigns| M1
+    M1 -.-> N6
+    style N0 fill:#E1F5FE,stroke:#4FC3F7
+    style N1 fill:#E1F5FE,stroke:#4FC3F7
+    style N2 fill:#FFF3E0,stroke:#FFB74D
+    style N3 fill:#FFECB3,stroke:#FFC107
+    style N4 fill:#FFF3E0,stroke:#FFB74D
+    style N5 fill:#FFECB3,stroke:#FFC107
+    style N6 fill:#FFF3E0,stroke:#FFB74D
+    style N7 fill:#FFECB3,stroke:#FFC107
+    style N8 fill:#FFF3E0,stroke:#FFB74D
+    style N9 fill:#E1F5FE,stroke:#4FC3F7
+    style N10 fill:#E1F5FE,stroke:#4FC3F7
+    style N11 fill:#FFF3E0,stroke:#FFB74D
+    style N12 fill:#FFF3E0,stroke:#FFB74D
+    style S0 fill:#E1F5FE,stroke:#4FC3F7
+    style S1 fill:#FFECB3,stroke:#FFC107
+    style S2 fill:#E1F5FE,stroke:#4FC3F7
+    style M0 fill:#FFF3E0,stroke:#FFB74D
+    style M1 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_0 fill:#FFECB3,stroke:#FFC107
+    style nest0_1 fill:#E1F5FE,stroke:#4FC3F7
+    style nest0_2 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_0 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_1 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_2 fill:#E1F5FE,stroke:#4FC3F7
+    style nest1_3 fill:#E1F5FE,stroke:#4FC3F7
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#4FC3F7,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_53.mmd b/train/mermaid/hard/mermaid_53.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b9c08e10683ced49deaf223b1a4b3b9f41fb283a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_53.mmd
@@ -0,0 +1,125 @@
+graph TD
+    N0([start])
+    N1[Circuit Breaker Operation]
+    N2[[Geothermal Power]]
+    N3([Renewable Integration])
+    N4{Alert Dispatch}
+    N5(Energy Market Analysis)
+    N6(Power Backup)
+    N7{Substation Automation}
+    N8[Power Purchase]
+    N9[/Oil and Gas Exploration/]
+    N10[/Carbon Capture/]
+    N11(Consumption Logging)
+    N12([Transformer Station])
+    N13[/Distributed Generation Management/]
+    N14(Power Plant)
+    N15[Energy Efficiency Audit]
+    N16{Grid Modernization}
+    N17([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Solar Panel Installation
+        nest0_0(Hydropower Generation)
+        nest0_1[(Energy Infrastructure Planning)]
+        nest0_2(Nuclear Reactor Control)
+        nest0_3{Regulatory Compliance}
+    end
+    subgraph Pipeline Monitoring
+        nest1_0([Energy Trading])
+        nest1_1[(Voltage Regulation)]
+        nest1_2[Cybersecurity for Grid]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    nest0_0 -.-> |yes| nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> |yes| nest0_3
+    N15 --> nest0_0
+    nest0_3 --> N17
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> |no| nest1_2
+    N15 --> nest1_0
+    nest1_2 --> |no| N12
+    N8 -.-> S0
+    S0 --> N10
+    S0 --> N11
+    N1 -.-> S1
+    S1 --> N7
+    S1 --> N15
+    N3 --> S2
+    S2 -.-> N8
+    S2 --> N16
+    N1 --> M0
+    N2 --> M0
+    M0 --> N4
+    N6 --> M1
+    N1 -.-> M1
+    N4 --> M1
+    M1 -.-> N10
+    style S0 fill:#EDF5F3,stroke:#A1D7CD
+    style S1 fill:#D1C4E9,stroke:#673AB7
+    style S2 fill:#F1F8FF,stroke:#42A5F5
+    style M0 fill:#D1C4E9,stroke:#673AB7
+    style M1 fill:#D1C4E9,stroke:#673AB7
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_530.txt b/train/mermaid/hard/mermaid_530.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e019c4845a6e6ec0dc53b2074a6c6700cdcf0642
--- /dev/null
+++ b/train/mermaid/hard/mermaid_530.txt
@@ -0,0 +1,35 @@
+<Customer Support for Backers, connectedTo, Press Outreach>
+<Due Diligence for Projects, connectedTo, Investor Verification>
+<Email List Building, connectedTo, Due Diligence for Projects>
+<Email List Building, connectedTo, Investor Relations>
+<Escrow Management, connectedTo, Post_Campaign Updates>
+<Financial Projection Analysis, connectedTo, Marketing Strategy>
+<Financial Projection Analysis, partOf, Campaign Creation>
+<Fulfillment Planning, connectedTo, Reward Tier Design>
+<Fulfillment Planning, connectedTo, end>
+<Goal Setting, connectedTo, Financial Projection Analysis>
+<Goal Setting, partOf, Campaign Creation>
+<Investor Relations, connectedTo, Tax Implications of Crowdfunding>
+<Investor Relations, partOf, Manufacturing Planning>
+<Investor Verification, connectedTo, Fulfillment Planning>
+<Logistics for Rewards, connectedTo, Due Diligence for Projects>
+<Logistics for Rewards, connectedTo, Real Estate Crowdfunding>
+<Marketing Strategy, connectedTo, Customer Support for Backers>
+<Marketing Strategy, partOf, Campaign Creation>
+<Platform Fee Management, connectedTo, Due Diligence for Projects>
+<Platform Fee Management, connectedTo, Escrow Management>
+<Platform Fee Management, connectedTo, Logistics for Rewards>
+<Post_Campaign Updates, connectedTo, Customer Support for Backers>
+<Post_Campaign Updates, connectedTo, Investor Relations>
+<Press Outreach, connectedTo, Due Diligence for Projects>
+<Press Outreach, connectedTo, Logistics for Rewards>
+<Project Vetting, connectedTo, Email List Building>
+<Real Estate Crowdfunding, connectedTo, Project Vetting>
+<Reward Tier Design, connectedTo, Goal Setting>
+<Reward Tier Design, partOf, Campaign Creation>
+<Success Fee Structures, connectedTo, Platform Fee Management>
+<Tax Implications of Crowdfunding, connectedTo, Escrow Management>
+<Tax Implications of Crowdfunding, partOf, Manufacturing Planning>
+<start, connectedTo, Email List Building>
+<start, connectedTo, Project Vetting>
+<start, connectedTo, Success Fee Structures>
diff --git a/train/mermaid/hard/mermaid_532.txt b/train/mermaid/hard/mermaid_532.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3136f691b163f675fe7f2809c06a46ddf7024aaa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_532.txt
@@ -0,0 +1,36 @@
+<Backer Communication, connectedTo, Press Outreach>
+<Backer Communication, partOf, Marketing Strategy>
+<Customer Support for Backers, attracts investors, Securities Regulations Adherence>
+<Customer Support for Backers, connectedTo, International Crowdfunding>
+<Customer Support for Backers, connectedTo, Manufacturing Planning>
+<Customer Support for Backers, handles logistics, Video Production for Campaigns>
+<Due Diligence for Projects, connectedTo, Customer Support for Backers>
+<Due Diligence for Projects, connectedTo, Pitch Deck Preparation>
+<Financial Projection Analysis, connectedTo, Due Diligence for Projects>
+<Financial Projection Analysis, partOf, Community Building>
+<Goal Setting, connectedTo, Project Vetting>
+<Goal Setting, partOf, Marketing Strategy>
+<International Crowdfunding, vets projects, Securities Regulations Adherence>
+<Investor Verification, connectedTo, Platform Selection>
+<Investor Verification, connectedTo, Securities Regulations Adherence>
+<Manufacturing Planning, connectedTo, Video Production for Campaigns>
+<Pitch Deck Preparation, connectedTo, Financial Projection Analysis>
+<Pitch Deck Preparation, partOf, Community Building>
+<Platform Selection, connectedTo, Due Diligence for Projects>
+<Platform Selection, connectedTo, Securities Regulations Adherence>
+<Post_Campaign Updates, connectedTo, Goal Setting>
+<Post_Campaign Updates, partOf, Marketing Strategy>
+<Press Outreach, connectedTo, Due Diligence for Projects>
+<Press Outreach, connectedTo, International Crowdfunding>
+<Press Outreach, connectedTo, Investor Verification>
+<Press Outreach, connectedTo, Reward_Based Crowdfunding>
+<Press Outreach, connectedTo, Video Production for Campaigns>
+<Project Vetting, connectedTo, Backer Communication>
+<Project Vetting, partOf, Marketing Strategy>
+<Reward_Based Crowdfunding, connectedTo, Investor Verification>
+<Reward_Based Crowdfunding, connectedTo, Securities Regulations Adherence>
+<Social Media Promotion, communicates updates, Platform Selection>
+<Social Media Promotion, connectedTo, Securities Regulations Adherence>
+<Social Media Promotion, facilitates equity, Press Outreach>
+<Video Production for Campaigns, connectedTo, International Crowdfunding>
+<Video Production for Campaigns, connectedTo, Post_Campaign Updates>
diff --git a/train/mermaid/hard/mermaid_533.txt b/train/mermaid/hard/mermaid_533.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b722a843dc2eac08f25a5c088e0b6446007b980b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_533.txt
@@ -0,0 +1,38 @@
+<Campaign Creation, connectedTo, Goal Setting>
+<Community Building, connectedTo, Escrow Management>
+<Community Building, connectedTo, Payment Processing>
+<Donation_Based Crowdfunding, connectedTo, Payment Processing>
+<Due Diligence for Projects, connectedTo, Investor Verification>
+<Due Diligence for Projects, partOf, Reward Tier Design>
+<Equity Crowdfunding, connectedTo, Manufacturing Planning>
+<Equity Crowdfunding, connectedTo, Success Fee Structures>
+<Escrow Management, connectedTo, Donation_Based Crowdfunding>
+<Escrow Management, connectedTo, Investor Verification>
+<Fulfillment Planning, connectedTo, Real Estate Crowdfunding>
+<Fulfillment Planning, facilitates equity, Investor Verification>
+<Goal Setting, connectedTo, Payment Processing>
+<Goal Setting, connectedTo, Tax Implications of Crowdfunding>
+<Goal Setting, connectedTo, Video Production for Campaigns>
+<Investor Verification, generates reports, end>
+<Logistics for Rewards, connectedTo, Payment Processing>
+<Logistics for Rewards, partOf, Legal Compliance>
+<Manufacturing Planning, connectedTo, Escrow Management>
+<Manufacturing Planning, connectedTo, Payment Processing>
+<Manufacturing Planning, connectedTo, Project Vetting>
+<Manufacturing Planning, connectedTo, Reward_Based Crowdfunding>
+<Payment Processing, connectedTo, Investor Verification>
+<Payment Processing, connectedTo, Post_Campaign Updates>
+<Payment Processing, connectedTo, Reward_Based Crowdfunding>
+<Payment Processing, connectedTo, end>
+<Platform Selection, connectedTo, Fulfillment Planning>
+<Post_Campaign Updates, connectedTo, Reward_Based Crowdfunding>
+<Project Vetting, connectedTo, Community Building>
+<Project Vetting, connectedTo, Payment Processing>
+<Real Estate Crowdfunding, connectedTo, Equity Crowdfunding>
+<Real Estate Crowdfunding, connectedTo, Payment Processing>
+<Reward_Based Crowdfunding, connectedTo, Investor Verification>
+<Success Fee Structures, connectedTo, Logistics for Rewards>
+<Success Fee Structures, partOf, Legal Compliance>
+<Tax Implications of Crowdfunding, connectedTo, Due Diligence for Projects>
+<Tax Implications of Crowdfunding, partOf, Reward Tier Design>
+<Video Production for Campaigns, connectedTo, Platform Selection>
diff --git a/train/mermaid/hard/mermaid_534.mmd b/train/mermaid/hard/mermaid_534.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b8ebf07bb82212faa8eb2a705418fe9f6671333b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_534.mmd
@@ -0,0 +1,126 @@
+graph TD
+    N0([start])
+    N1(Intellectual Property Protection)
+    N2(Social Media Promotion)
+    N3([Goal Setting])
+    N4[Due Diligence for Projects]
+    N5[(Platform Fee Management)]
+    N6[Legal Compliance]
+    N7[[Post_Campaign Updates]]
+    N8[Manufacturing Planning]
+    N9{Product Development Lifecycle}
+    N10[[International Crowdfunding]]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Fulfillment Planning
+        nest0_0{Donation_Based Crowdfunding}
+        nest0_1[Video Production for Campaigns]
+        nest0_2[Backer Communication]
+    end
+    subgraph Tax Implications of Crowdfunding
+        nest1_0(Financial Projection Analysis)
+        nest1_1[(Reward Tier Design)]
+        nest1_2[Press Outreach]
+        nest1_3(Funding Period Management)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> |facilitates equity| N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N9 -.-> nest0_0
+    nest0_2 -.-> N6
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N4 -.-> nest1_0
+    nest1_3 -.-> |manages shareholders| N7
+    N3 -.-> S0
+    S0 -.-> N8
+    S0 --> N7
+    S0 -.-> N9
+    N0 --> S1
+    S1 --> N4
+    S1 -.-> N5
+    S1 -.-> N7
+    N2 --> M0
+    N1 --> M0
+    M0 --> N4
+    N5 -.-> M1
+    N3 -.-> M1
+    N2 --> M1
+    M1 -.-> N8
+    N0 -.-> M2
+    N5 --> M2
+    M2 -.-> N7
+    style N0 fill:#F3E5F5,stroke:#BA68C8
+    style N1 fill:#F3E5F5,stroke:#BA68C8
+    style N2 fill:#F3E5F5,stroke:#BA68C8
+    style N3 fill:#BBDEFB,stroke:#2196F3
+    style N4 fill:#F3E5F5,stroke:#BA68C8
+    style N5 fill:#BBDEFB,stroke:#2196F3
+    style N6 fill:#FCE4EC,stroke:#E91E63
+    style N7 fill:#FCE4EC,stroke:#E91E63
+    style N8 fill:#BBDEFB,stroke:#2196F3
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#BBDEFB,stroke:#2196F3
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style M0 fill:#BBDEFB,stroke:#2196F3
+    style M1 fill:#FCE4EC,stroke:#E91E63
+    style M2 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_2 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_1 fill:#BBDEFB,stroke:#2196F3
+    style nest1_2 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_3 fill:#FCE4EC,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_538.mmd b/train/mermaid/hard/mermaid_538.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..26428190a43a7c3d07d5ff580090f611192ea8f1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_538.mmd
@@ -0,0 +1,126 @@
+graph RL
+    N0([Interoperability Standards])
+    N1(Wearable Technology)
+    N2(Asset Tracking)
+    N3[[Power Management for Devices]]
+    N4{Gateway Development}
+    N5{Cloud Platform Integration}
+    N6{Environmental Monitoring}
+    N7([Data Processing at Edge])
+    N8[[Connectivity Management]]
+    N9[(Firmware Updates)]
+    N10([Connected Vehicles])
+    N11([Smart Home Devices])
+    N12([Compliance with IoT Regulations])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Remote Monitoring and Control
+        nest0_0[Blockchain for IoT Security]
+        nest0_1{Energy Management Systems}
+    end
+    subgraph Smart Manufacturing
+        nest1_0(Network Protocol Selection)
+        nest1_1{Device Management}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> |enables wearables| N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    N4 -.-> nest0_0
+    nest0_1 -.-> N2
+    nest1_0 -.-> |collects data| nest1_1
+    N3 -.-> nest1_0
+    nest1_1 -.-> N9
+    N6 --> S0
+    S0 -.-> N10
+    S0 -.-> N8
+    N4 -.-> S1
+    S1 --> N10
+    S1 -.-> N8
+    S1 --> N6
+    S1 --> N11
+    N5 --> S2
+    S2 -.-> N9
+    S2 -.-> N7
+    S2 --> N12
+    S2 -.-> |connects endpoints| N8
+    N0 -.-> M0
+    N2 -.-> M0
+    N5 -.-> |designs UIs| M0
+    M0 --> N7
+    N1 --> M1
+    N0 -.-> M1
+    M1 -.-> N3
+    style N0 fill:#FFFCE6,stroke:#FFF9AE
+    style N1 fill:#EDE7F6,stroke:#9575CD
+    style N2 fill:#E8EAF6,stroke:#5C6BC0
+    style N3 fill:#E8EAF6,stroke:#5C6BC0
+    style N4 fill:#E8EAF6,stroke:#5C6BC0
+    style N5 fill:#E8EAF6,stroke:#5C6BC0
+    style N6 fill:#EDE7F6,stroke:#9575CD
+    style N7 fill:#E8EAF6,stroke:#5C6BC0
+    style N8 fill:#FFFCE6,stroke:#FFF9AE
+    style N9 fill:#EDE7F6,stroke:#9575CD
+    style N10 fill:#FFFCE6,stroke:#FFF9AE
+    style N11 fill:#FFFCE6,stroke:#FFF9AE
+    style N12 fill:#E8EAF6,stroke:#5C6BC0
+    style S0 fill:#EDE7F6,stroke:#9575CD
+    style S1 fill:#EDE7F6,stroke:#9575CD
+    style S2 fill:#E8EAF6,stroke:#5C6BC0
+    style M0 fill:#E8EAF6,stroke:#5C6BC0
+    style M1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest0_0 fill:#EDE7F6,stroke:#9575CD
+    style nest0_1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest1_0 fill:#EDE7F6,stroke:#9575CD
+    style nest1_1 fill:#FFFCE6,stroke:#FFF9AE
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#5C6BC0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_542.mmd b/train/mermaid/hard/mermaid_542.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..90151952af2cf8638d2e1784e4f345f2b37cb9ab
--- /dev/null
+++ b/train/mermaid/hard/mermaid_542.mmd
@@ -0,0 +1,112 @@
+graph BT
+    N0([Real_time Data Streaming])
+    N1[/Interoperability Standards/]
+    N2([Predictive Maintenance])
+    N3[/Connected Vehicles/]
+    N4[Data Analysis in Cloud]
+    N5[(Wearable Technology)]
+    N6[(Smart Home Devices)]
+    N7(Sensor Integration)
+    N8([Cloud Platform Integration])
+    N9([Data Privacy in IoT])
+    N10(Data Processing at Edge)
+    N11{API Development for IoT}
+    N12[Smart City Sensors]
+    N13([end])
+    S2(( ))
+    M1(( ))
+    subgraph IoT Device Certification
+        nest0_0(Industrial IoT)
+        nest0_1[Edge Computing for IoT]
+        nest0_2(Data Collection)
+        nest0_3[(Energy Management Systems)]
+    end
+    subgraph Network Protocol Selection
+        nest1_0[(Asset Tracking)]
+        nest1_1[[Gateway Development]]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 --> nest0_0
+    nest0_3 --> N12
+    nest1_0 --> nest1_1
+    N10 -.-> nest1_0
+    nest1_1 -.-> N6
+    N6 --> S2
+    S2 --> N13
+    S2 --> N9
+    N3 -.-> M1
+    N1 --> M1
+    N2 --> M1
+    M1 --> N5
+    N1 -.-> N6
+    nest1_1 --> nest0_2
+    N13 -.-> N0
+    style N0 fill:#FFE88D,stroke:#FFDA4E
+    style N1 fill:#D0EFEE,stroke:#73C6BC
+    style N2 fill:#EBEBEB,stroke:#E0E0E0
+    style N3 fill:#FFE88D,stroke:#FFDA4E
+    style N4 fill:#D0EFEE,stroke:#73C6BC
+    style N5 fill:#D0EFEE,stroke:#73C6BC
+    style N6 fill:#EBEBEB,stroke:#E0E0E0
+    style N7 fill:#EBEBEB,stroke:#E0E0E0
+    style N8 fill:#FFE88D,stroke:#FFDA4E
+    style N9 fill:#EBEBEB,stroke:#E0E0E0
+    style N10 fill:#FFE88D,stroke:#FFDA4E
+    style N11 fill:#D0EFEE,stroke:#73C6BC
+    style N12 fill:#D0EFEE,stroke:#73C6BC
+    style N13 fill:#EBEBEB,stroke:#E0E0E0
+    style S2 fill:#D0EFEE,stroke:#73C6BC
+    style M1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_0 fill:#FFE88D,stroke:#FFDA4E
+    style nest0_1 fill:#FFE88D,stroke:#FFDA4E
+    style nest0_2 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_3 fill:#EBEBEB,stroke:#E0E0E0
+    style nest1_0 fill:#FFE88D,stroke:#FFDA4E
+    style nest1_1 fill:#D0EFEE,stroke:#73C6BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFDA4E,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_543.mmd b/train/mermaid/hard/mermaid_543.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b5d6e07103141ccc6debbf590bad12e69f93c2d2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_543.mmd
@@ -0,0 +1,136 @@
+graph LR
+    N0([start])
+    N1[/Connected Vehicles/]
+    N2(Asset Tracking)
+    N3(Data Collection)
+    N4[/Real_time Data Streaming/]
+    N5(Data Processing at Edge)
+    N6(Data Analysis in Cloud)
+    N7{Smart Home Devices}
+    N8{Smart Manufacturing}
+    N9([Energy Management Systems])
+    N10(Power Management for Devices)
+    N11(Interoperability Standards)
+    N12[(Industrial IoT)]
+    N13{API Development for IoT}
+    N14[(Healthcare IoT Devices)]
+    N15[[Security Implementation]]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph User Interface for IoT Apps
+        nest0_0(Device Management)
+        nest0_1[Wearable Technology]
+        nest0_2[Cloud Platform Integration]
+    end
+    subgraph Smart City Sensors
+        nest1_0([Network Protocol Selection])
+        nest1_1{IoT Device Certification}
+        nest1_2{Predictive Maintenance}
+        nest1_3[/Sensor Integration/]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N13 -.-> nest0_0
+    nest0_2 --> N15
+    nest1_0 --> nest1_1
+    nest1_1 -.-> |no| nest1_2
+    nest1_2 -.-> nest1_3
+    N3 --> nest1_0
+    nest1_3 -.-> N11
+    N11 --> S0
+    S0 --> N16
+    S0 --> N14
+    S0 --> N15
+    N0 -.-> S1
+    S1 --> N16
+    S1 -.-> N8
+    N10 --> S2
+    S2 --> N12
+    S2 -.-> N14
+    S2 -.-> N15
+    N1 -.-> M0
+    N2 --> M0
+    N0 --> M0
+    M0 --> N5
+    N0 -.-> M1
+    N4 --> M1
+    M1 --> N6
+    N1 --> M2
+    N3 -.-> M2
+    N2 -.-> M2
+    M2 --> N7
+    style S0 fill:#F8FDD3,stroke:#D3EB9F
+    style S1 fill:#FFE88D,stroke:#FFDA4E
+    style S2 fill:#F8FDD3,stroke:#D3EB9F
+    style M0 fill:#F8FDD3,stroke:#D3EB9F
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    style M2 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_543.txt b/train/mermaid/hard/mermaid_543.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8b7bb74ca6488e0b5d9c8db4ba750e3ff5ee7ffa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_543.txt
@@ -0,0 +1,48 @@
+<API Development for IoT, connectedTo, Device Management>
+<API Development for IoT, connectedTo, Healthcare IoT Devices>
+<Asset Tracking, connectedTo, Data Collection>
+<Asset Tracking, connectedTo, Data Processing at Edge>
+<Asset Tracking, connectedTo, Smart Home Devices>
+<Cloud Platform Integration, connectedTo, Security Implementation>
+<Cloud Platform Integration, partOf, User Interface for IoT Apps>
+<Connected Vehicles, connectedTo, Asset Tracking>
+<Connected Vehicles, connectedTo, Data Processing at Edge>
+<Connected Vehicles, connectedTo, Smart Home Devices>
+<Data Analysis in Cloud, connectedTo, Smart Home Devices>
+<Data Collection, connectedTo, Network Protocol Selection>
+<Data Collection, connectedTo, Real_time Data Streaming>
+<Data Collection, connectedTo, Smart Home Devices>
+<Data Processing at Edge, connectedTo, Data Analysis in Cloud>
+<Device Management, connectedTo, Wearable Technology>
+<Device Management, partOf, User Interface for IoT Apps>
+<Energy Management Systems, connectedTo, Power Management for Devices>
+<Healthcare IoT Devices, connectedTo, Security Implementation>
+<Industrial IoT, connectedTo, API Development for IoT>
+<Interoperability Standards, connectedTo, Healthcare IoT Devices>
+<Interoperability Standards, connectedTo, Industrial IoT>
+<Interoperability Standards, connectedTo, Security Implementation>
+<Interoperability Standards, connectedTo, end>
+<IoT Device Certification, no, Predictive Maintenance>
+<IoT Device Certification, partOf, Smart City Sensors>
+<Network Protocol Selection, connectedTo, IoT Device Certification>
+<Network Protocol Selection, partOf, Smart City Sensors>
+<Power Management for Devices, connectedTo, Healthcare IoT Devices>
+<Power Management for Devices, connectedTo, Industrial IoT>
+<Power Management for Devices, connectedTo, Interoperability Standards>
+<Power Management for Devices, connectedTo, Security Implementation>
+<Predictive Maintenance, connectedTo, Sensor Integration>
+<Predictive Maintenance, partOf, Smart City Sensors>
+<Real_time Data Streaming, connectedTo, Data Analysis in Cloud>
+<Real_time Data Streaming, connectedTo, Data Processing at Edge>
+<Security Implementation, connectedTo, end>
+<Sensor Integration, connectedTo, Interoperability Standards>
+<Sensor Integration, partOf, Smart City Sensors>
+<Smart Home Devices, connectedTo, Smart Manufacturing>
+<Smart Manufacturing, connectedTo, Energy Management Systems>
+<Wearable Technology, connectedTo, Cloud Platform Integration>
+<Wearable Technology, partOf, User Interface for IoT Apps>
+<start, connectedTo, Connected Vehicles>
+<start, connectedTo, Data Analysis in Cloud>
+<start, connectedTo, Data Processing at Edge>
+<start, connectedTo, Smart Manufacturing>
+<start, connectedTo, end>
diff --git a/train/mermaid/hard/mermaid_544.txt b/train/mermaid/hard/mermaid_544.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f531180472d756e907460f02b43ac69344f9fb94
--- /dev/null
+++ b/train/mermaid/hard/mermaid_544.txt
@@ -0,0 +1,38 @@
+<Agricultural IoT, connectedTo, Industrial IoT>
+<Agricultural IoT, partOf, Real_time Data Streaming>
+<Blockchain for IoT Security, connectedTo, Retail IoT>
+<Blockchain for IoT Security, connectedTo, Supply Chain Optimization>
+<Data Analysis in Cloud, connectedTo, Security Implementation>
+<Data Processing at Edge, connectedTo, Supply Chain Optimization>
+<Environmental Monitoring, connectedTo, Blockchain for IoT Security>
+<Healthcare IoT Devices, connectedTo, Smart City Sensors>
+<Healthcare IoT Devices, partOf, Asset Tracking>
+<Industrial IoT, connectedTo, Security Implementation>
+<Industrial IoT, partOf, Real_time Data Streaming>
+<Interoperability Standards, connectedTo, Smart Manufacturing>
+<Interoperability Standards, partOf, Asset Tracking>
+<IoT Device Certification, connectedTo, Connected Vehicles>
+<IoT Device Certification, connectedTo, Smart Home Devices>
+<IoT Device Certification, connectedTo, Supply Chain Optimization>
+<Network Protocol Selection, partOf, Asset Tracking>
+<Network Protocol Selection, yes, Interoperability Standards>
+<Remote Monitoring and Control, connectedTo, Sensor Integration>
+<Remote Monitoring and Control, connectedTo, Supply Chain Optimization>
+<Retail IoT, connectedTo, IoT Device Certification>
+<Retail IoT, connectedTo, Network Protocol Selection>
+<Security Implementation, connectedTo, Agricultural IoT>
+<Security Implementation, connectedTo, Remote Monitoring and Control>
+<Sensor Integration, connectedTo, Environmental Monitoring>
+<Smart City Sensors, connectedTo, Data Analysis in Cloud>
+<Smart City Sensors, connectedTo, Data Processing at Edge>
+<Smart City Sensors, connectedTo, Security Implementation>
+<Smart City Sensors, connectedTo, Sensor Integration>
+<Smart Home Devices, connectedTo, Data Processing at Edge>
+<Smart Manufacturing, connectedTo, Healthcare IoT Devices>
+<Smart Manufacturing, partOf, Asset Tracking>
+<Supply Chain Optimization, no, Connected Vehicles>
+<start, connectedTo, Connected Vehicles>
+<start, connectedTo, Data Processing at Edge>
+<start, connectedTo, Sensor Integration>
+<start, connectedTo, Smart City Sensors>
+<start, connectedTo, Supply Chain Optimization>
diff --git a/train/mermaid/hard/mermaid_547.txt b/train/mermaid/hard/mermaid_547.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6a4e16dc51e4a75e89998db9a6d7627ef13af079
--- /dev/null
+++ b/train/mermaid/hard/mermaid_547.txt
@@ -0,0 +1,36 @@
+<Bandwidth Optimization, connectedTo, Network Optimization for Edge>
+<Bandwidth Optimization, partOf, Distributed Data Storage>
+<Compliance and Governance at Edge, connectedTo, Edge Security Analytics>
+<Data Filtering at Edge, connectedTo, Industrial Edge Computing>
+<Data Filtering at Edge, partOf, Edge Application Development>
+<Data Synchronization between Edge and Cloud, connectedTo, Orchestration of Edge Workloads>
+<Data Synchronization between Edge and Cloud, partOf, Edge Application Development>
+<Edge AI Model Deployment, develops applications, Real_time Analytics at Edge>
+<Edge AI Model Deployment, partOf, Distributed Data Storage>
+<Edge Security Analytics, connectedTo, Edge Network Topology Design>
+<Edge_to_Cloud Data Transfer Optimization, connectedTo, Bandwidth Optimization>
+<Edge_to_Cloud Data Transfer Optimization, partOf, Distributed Data Storage>
+<Healthcare Edge Computing, connectedTo, Compliance and Governance at Edge>
+<Healthcare Edge Computing, connectedTo, Edge Network Topology Design>
+<Healthcare Edge Computing, optimizes telecoms, Network Optimization for Edge>
+<Industrial Edge Computing, connectedTo, Data Synchronization between Edge and Cloud>
+<Industrial Edge Computing, partOf, Edge Application Development>
+<Latency Reduction, aggregates data, Edge AI Model Deployment>
+<Latency Reduction, connectedTo, Data Filtering at Edge>
+<Latency Reduction, connectedTo, Edge Network Topology Design>
+<Latency Reduction, connectedTo, Edge Security Analytics>
+<Latency Reduction, connectedTo, Healthcare Edge Computing>
+<Latency Reduction, connectedTo, Network Optimization for Edge>
+<Latency Reduction, connectedTo, Retail Edge Computing>
+<Network Optimization for Edge, connectedTo, Compliance and Governance at Edge>
+<Network Optimization for Edge, connectedTo, Edge Security Analytics>
+<Orchestration of Edge Workloads, manages APIs, Latency Reduction>
+<Orchestration of Edge Workloads, partOf, Edge Application Development>
+<Real_time Analytics at Edge, connectedTo, Edge_to_Cloud Data Transfer Optimization>
+<Real_time Analytics at Edge, partOf, Distributed Data Storage>
+<Retail Edge Computing, connectedTo, Edge Security Analytics>
+<Retail Edge Computing, connectedTo, Healthcare Edge Computing>
+<Retail Edge Computing, optimizes bandwidth, Network Optimization for Edge>
+<start, connectedTo, Edge Security Analytics>
+<start, connectedTo, Latency Reduction>
+<start, runs AI models, Network Optimization for Edge>
diff --git a/train/mermaid/hard/mermaid_548.mmd b/train/mermaid/hard/mermaid_548.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d50256cc9d113044189d672fedcd06fc733f4013
--- /dev/null
+++ b/train/mermaid/hard/mermaid_548.mmd
@@ -0,0 +1,120 @@
+graph LR
+    N0([Network Optimization for Edge])
+    N1(Edge AI Model Deployment)
+    N2[/Edge Network Topology Design/]
+    N3(Remote Device Management)
+    N4(Edge Device Analytics)
+    N5[Fleet Management for Edge Devices]
+    N6[Edge Data Processing]
+    N7([Edge_to_Cloud Data Transfer Optimization])
+    N8[Edge Application Development]
+    N9[Resource Management at Edge]
+    N10[Orchestration of Edge Workloads]
+    N11[[Data Synchronization between Edge and Cloud]]
+    N12(Healthcare Edge Computing)
+    N13[Retail Edge Computing]
+    N14([Connectivity to Cloud])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Microservices on Edge Devices
+        nest0_0[Edge API Management]
+        nest0_1[(Security for Edge Devices)]
+    end
+    subgraph Offline Functionality
+        nest1_0[(Virtualization at Edge)]
+        nest1_1(Latency Reduction)
+    end
+    N0 -.-> N1
+    N1 -.-> |optimizes resources| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> |synchronizes data| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> |enables offline operations| N12
+    N12 -.-> N13
+    N13 --> N14
+    nest0_0 -.-> nest0_1
+    N2 --> nest0_0
+    nest0_1 -.-> N5
+    nest1_0 -.-> |stores data temporarily| nest1_1
+    N4 -.-> nest1_0
+    nest1_1 --> N8
+    N2 -.-> S0
+    S0 --> N9
+    S0 -.-> N11
+    N9 -.-> S1
+    S1 --> N11
+    S1 -.-> N14
+    S1 --> N13
+    N10 -.-> M0
+    N3 --> M0
+    M0 --> N14
+    N5 -.-> M1
+    N2 --> M1
+    N0 -.-> M1
+    M1 --> N12
+    style N0 fill:#C8E6C9,stroke:#4CAF50
+    style N1 fill:#C5CAE9,stroke:#3F51B5
+    style N2 fill:#C5CAE9,stroke:#3F51B5
+    style N3 fill:#C8E6C9,stroke:#4CAF50
+    style N4 fill:#C5CAE9,stroke:#3F51B5
+    style N5 fill:#C5CAE9,stroke:#3F51B5
+    style N6 fill:#FCFCE7,stroke:#DCE775
+    style N7 fill:#C5CAE9,stroke:#3F51B5
+    style N8 fill:#FCFCE7,stroke:#DCE775
+    style N9 fill:#C8E6C9,stroke:#4CAF50
+    style N10 fill:#FCFCE7,stroke:#DCE775
+    style N11 fill:#C8E6C9,stroke:#4CAF50
+    style N12 fill:#FCFCE7,stroke:#DCE775
+    style N13 fill:#C5CAE9,stroke:#3F51B5
+    style N14 fill:#C5CAE9,stroke:#3F51B5
+    style S0 fill:#C8E6C9,stroke:#4CAF50
+    style S1 fill:#FCFCE7,stroke:#DCE775
+    style M0 fill:#C8E6C9,stroke:#4CAF50
+    style M1 fill:#C8E6C9,stroke:#4CAF50
+    style nest0_0 fill:#FCFCE7,stroke:#DCE775
+    style nest0_1 fill:#FCFCE7,stroke:#DCE775
+    style nest1_0 fill:#C5CAE9,stroke:#3F51B5
+    style nest1_1 fill:#FCFCE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#DCE775,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_548.txt b/train/mermaid/hard/mermaid_548.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fcd07e953ce17958bc9de10b412fbfe45d69823c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_548.txt
@@ -0,0 +1,34 @@
+<Data Synchronization between Edge and Cloud, enables offline operations, Healthcare Edge Computing>
+<Edge AI Model Deployment, optimizes resources, Edge Network Topology Design>
+<Edge API Management, connectedTo, Security for Edge Devices>
+<Edge API Management, partOf, Microservices on Edge Devices>
+<Edge Application Development, connectedTo, Resource Management at Edge>
+<Edge Data Processing, connectedTo, Edge_to_Cloud Data Transfer Optimization>
+<Edge Device Analytics, connectedTo, Fleet Management for Edge Devices>
+<Edge Device Analytics, connectedTo, Virtualization at Edge>
+<Edge Network Topology Design, connectedTo, Data Synchronization between Edge and Cloud>
+<Edge Network Topology Design, connectedTo, Edge API Management>
+<Edge Network Topology Design, connectedTo, Healthcare Edge Computing>
+<Edge Network Topology Design, connectedTo, Remote Device Management>
+<Edge Network Topology Design, connectedTo, Resource Management at Edge>
+<Edge_to_Cloud Data Transfer Optimization, connectedTo, Edge Application Development>
+<Fleet Management for Edge Devices, connectedTo, Healthcare Edge Computing>
+<Fleet Management for Edge Devices, synchronizes data, Edge Data Processing>
+<Healthcare Edge Computing, connectedTo, Retail Edge Computing>
+<Latency Reduction, connectedTo, Edge Application Development>
+<Latency Reduction, partOf, Offline Functionality>
+<Network Optimization for Edge, connectedTo, Edge AI Model Deployment>
+<Network Optimization for Edge, connectedTo, Healthcare Edge Computing>
+<Orchestration of Edge Workloads, connectedTo, Connectivity to Cloud>
+<Orchestration of Edge Workloads, connectedTo, Data Synchronization between Edge and Cloud>
+<Remote Device Management, connectedTo, Connectivity to Cloud>
+<Remote Device Management, connectedTo, Edge Device Analytics>
+<Resource Management at Edge, connectedTo, Connectivity to Cloud>
+<Resource Management at Edge, connectedTo, Data Synchronization between Edge and Cloud>
+<Resource Management at Edge, connectedTo, Orchestration of Edge Workloads>
+<Resource Management at Edge, connectedTo, Retail Edge Computing>
+<Retail Edge Computing, connectedTo, Connectivity to Cloud>
+<Security for Edge Devices, connectedTo, Fleet Management for Edge Devices>
+<Security for Edge Devices, partOf, Microservices on Edge Devices>
+<Virtualization at Edge, partOf, Offline Functionality>
+<Virtualization at Edge, stores data temporarily, Latency Reduction>
diff --git a/train/mermaid/hard/mermaid_549.mmd b/train/mermaid/hard/mermaid_549.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..91b9ec306a1ab29b16a7558bb891524c4441c24f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_549.mmd
@@ -0,0 +1,122 @@
+graph BT
+    N0([Edge Application Development])
+    N1{Real_time Analytics at Edge}
+    N2(Edge Device Deployment)
+    N3[/Microservices on Edge Devices/]
+    N4{Security for Edge Devices}
+    N5[(Healthcare Edge Computing)]
+    N6[/Event_Driven Architectures at Edge/]
+    N7[(Local AI or ML Inference)]
+    N8[Bandwidth Optimization]
+    N9[Edge Data Processing]
+    N10[/Edge Computing Hardware Selection/]
+    N11[Data Filtering at Edge]
+    N12(Fleet Management for Edge Devices)
+    N13(Smart City Edge Solutions)
+    N14[/Virtualization at Edge/]
+    N15(Edge Security Analytics)
+    N16{Retail Edge Computing}
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Edge_to_Cloud Data Transfer Optimization
+        nest0_0[/Orchestration of Edge Workloads/]
+        nest0_1[(Data Synchronization between Edge and Cloud)]
+    end
+    subgraph Compliance and Governance at Edge
+        nest1_0[/Offline Functionality/]
+        nest1_1([Latency Reduction])
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> |enables offline operations| N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> |manages power consumption| N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 --> N17
+    nest0_0 --> nest0_1
+    N11 --> nest0_0
+    nest0_1 --> N8
+    nest1_0 --> nest1_1
+    N1 --> nest1_0
+    nest1_1 -.-> N10
+    N0 --> S0
+    S0 -.-> N10
+    S0 -.-> N15
+    N9 -.-> S1
+    S1 --> N14
+    S1 -.-> N16
+    S1 --> N13
+    N5 -.-> M0
+    N2 --> M0
+    M0 --> N9
+    style N0 fill:#FFFAE0,stroke:#FFE470
+    style N1 fill:#FFF9D4,stroke:#FFE69C
+    style N2 fill:#D1C4E9,stroke:#7E57C2
+    style N3 fill:#D1C4E9,stroke:#7E57C2
+    style N4 fill:#D1C4E9,stroke:#7E57C2
+    style N5 fill:#FFFAE0,stroke:#FFE470
+    style N6 fill:#FFF9D4,stroke:#FFE69C
+    style N7 fill:#FFF9D4,stroke:#FFE69C
+    style N8 fill:#D1C4E9,stroke:#7E57C2
+    style N9 fill:#FFF9D4,stroke:#FFE69C
+    style N10 fill:#FFFAE0,stroke:#FFE470
+    style N11 fill:#FFFAE0,stroke:#FFE470
+    style N12 fill:#FFF9D4,stroke:#FFE69C
+    style N13 fill:#D1C4E9,stroke:#7E57C2
+    style N14 fill:#D1C4E9,stroke:#7E57C2
+    style N15 fill:#D1C4E9,stroke:#7E57C2
+    style N16 fill:#FFF9D4,stroke:#FFE69C
+    style N17 fill:#D1C4E9,stroke:#7E57C2
+    style S0 fill:#FFF9D4,stroke:#FFE69C
+    style S1 fill:#D1C4E9,stroke:#7E57C2
+    style M0 fill:#D1C4E9,stroke:#7E57C2
+    style nest0_0 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_1 fill:#FFFAE0,stroke:#FFE470
+    style nest1_0 fill:#FFF9D4,stroke:#FFE69C
+    style nest1_1 fill:#D1C4E9,stroke:#7E57C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFE470,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_550.txt b/train/mermaid/hard/mermaid_550.txt
new file mode 100644
index 0000000000000000000000000000000000000000..78f02f9344d9b88125dd359d73c194307880c0b9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_550.txt
@@ -0,0 +1,35 @@
+<Containerization at Edge, manages power consumption, Remote Device Management>
+<Data Filtering at Edge, connectedTo, Edge Device Deployment>
+<Data Filtering at Edge, connectedTo, Orchestration of Edge Workloads>
+<Edge Application Development, connectedTo, Security for Edge Devices>
+<Edge Application Development, partOf, Network Optimization for Edge>
+<Edge Computing Hardware Selection, connectedTo, Event_Driven Architectures at Edge>
+<Edge Computing Hardware Selection, connectedTo, Resource Management at Edge>
+<Edge Device Analytics, connectedTo, Edge Device Deployment>
+<Edge Device Analytics, powers healthcare devices, Offline Functionality>
+<Edge Device Deployment, connectedTo, Event_Driven Architectures at Edge>
+<Edge Device Deployment, connectedTo, Security for Edge Devices>
+<Edge Device Deployment, connectedTo, end>
+<Edge Gateway Management, connectedTo, Edge Device Deployment>
+<Edge Gateway Management, partOf, Fault Tolerance at Edge>
+<Edge Security Analytics, connectedTo, Fleet Management for Edge Devices>
+<Edge Security Analytics, partOf, Network Optimization for Edge>
+<Event_Driven Architectures at Edge, connectedTo, Real_time Analytics at Edge>
+<Event_Driven Architectures at Edge, connectedTo, end>
+<Fleet Management for Edge Devices, connectedTo, Edge Application Development>
+<Fleet Management for Edge Devices, partOf, Network Optimization for Edge>
+<Healthcare Edge Computing, connectedTo, Event_Driven Architectures at Edge>
+<Healthcare Edge Computing, provides fault tolerance, Data Filtering at Edge>
+<Offline Functionality, connectedTo, Power Consumption Optimization>
+<Orchestration of Edge Workloads, connectedTo, Edge Security Analytics>
+<Orchestration of Edge Workloads, partOf, Network Optimization for Edge>
+<Power Consumption Optimization, connectedTo, Telecom Edge Computing>
+<Real_time Analytics at Edge, connectedTo, Edge Gateway Management>
+<Real_time Analytics at Edge, partOf, Fault Tolerance at Edge>
+<Remote Device Management, connectedTo, Edge Device Analytics>
+<Resource Management at Edge, connectedTo, Edge Device Deployment>
+<Resource Management at Edge, manages microservices, Containerization at Edge>
+<Security for Edge Devices, connectedTo, Event_Driven Architectures at Edge>
+<Sensor Data Aggregation, connectedTo, Event_Driven Architectures at Edge>
+<Sensor Data Aggregation, connectedTo, Healthcare Edge Computing>
+<Telecom Edge Computing, runs AI models, Sensor Data Aggregation>
diff --git a/train/mermaid/hard/mermaid_551.txt b/train/mermaid/hard/mermaid_551.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0fc01de246b211e3e12341757b798e4941b3e5c4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_551.txt
@@ -0,0 +1,37 @@
+<Containerization at Edge, connectedTo, Data Synchronization between Edge and Cloud>
+<Data Synchronization between Edge and Cloud, connectedTo, Event_Driven Architectures at Edge>
+<Data Synchronization between Edge and Cloud, connectedTo, Power Consumption Optimization>
+<Distributed Data Storage, connectedTo, Edge Device Deployment>
+<Distributed Data Storage, partOf, Real_time Analytics at Edge>
+<Edge AI Model Deployment, connectedTo, Containerization at Edge>
+<Edge Computing Hardware Selection, connectedTo, Edge Device Analytics>
+<Edge Computing Hardware Selection, connectedTo, Healthcare Edge Computing>
+<Edge Computing Hardware Selection, connectedTo, Security for Edge Devices>
+<Edge Computing Hardware Selection, manages APIs, Sensor Data Aggregation>
+<Edge Data Processing, connectedTo, Local AI or ML Inference>
+<Edge Device Analytics, connectedTo, Edge Security Analytics>
+<Edge Device Deployment, connectedTo, Telecom Edge Computing>
+<Edge Device Deployment, partOf, Real_time Analytics at Edge>
+<Edge Device Provisioning, connectedTo, Healthcare Edge Computing>
+<Edge Device Provisioning, connectedTo, Retail Edge Computing>
+<Edge Device Provisioning, connectedTo, Telecom Edge Computing>
+<Edge Security Analytics, connectedTo, Edge Device Provisioning>
+<Event_Driven Architectures at Edge, connectedTo, Healthcare Edge Computing>
+<Event_Driven Architectures at Edge, connectedTo, Orchestration of Edge Workloads>
+<Healthcare Edge Computing, connectedTo, Sensor Data Aggregation>
+<Industrial Edge Computing, connectedTo, Containerization at Edge>
+<Industrial Edge Computing, partOf, Bandwidth Optimization>
+<Latency Reduction, partOf, Bandwidth Optimization>
+<Latency Reduction, performs real_time analytics, Industrial Edge Computing>
+<Offline Functionality, connectedTo, Latency Reduction>
+<Offline Functionality, partOf, Bandwidth Optimization>
+<Orchestration of Edge Workloads, connectedTo, Edge Computing Hardware Selection>
+<Power Consumption Optimization, connectedTo, Offline Functionality>
+<Power Consumption Optimization, partOf, Bandwidth Optimization>
+<Retail Edge Computing, connectedTo, Distributed Data Storage>
+<Retail Edge Computing, partOf, Real_time Analytics at Edge>
+<Security for Edge Devices, connectedTo, Healthcare Edge Computing>
+<Sensor Data Aggregation, connectedTo, Edge Data Processing>
+<Telecom Edge Computing, connectedTo, Local AI or ML Inference>
+<Telecom Edge Computing, connectedTo, Security for Edge Devices>
+<Telecom Edge Computing, connectedTo, Sensor Data Aggregation>
diff --git a/train/mermaid/hard/mermaid_553.mmd b/train/mermaid/hard/mermaid_553.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1edbc7bd1869d5e2f52a3f756a012bf104d3d37e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_553.mmd
@@ -0,0 +1,124 @@
+graph BT
+    N0([Cloud Marketplace Integration])
+    N1{Cloud Vendor Lock_in Mitigation}
+    N2{Identity and Access Management}
+    N3[/DevOps on Cloud/]
+    N4[(Big Data Services in Cloud)]
+    N5[[Private Cloud Management]]
+    N6(Cloud Backup Solutions)
+    N7[(Cloud Firewall Configuration)]
+    N8[(Software as a Service)]
+    N9[[Public Cloud Management]]
+    N10[/Edge_to_Cloud Integration/]
+    N11[[Serverless Computing]]
+    N12[[Platform as a Service]]
+    N13{Hybrid Cloud Deployment}
+    N14(Database as a Service)
+    N15[Disaster Recovery in Cloud]
+    N16([Cost Optimization in Cloud])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Container Orchestration
+        nest0_0[[Virtual Machine Management]]
+        nest0_1{Compliance in Cloud}
+    end
+    subgraph Machine Learning as a Service
+        nest1_0(Resource Tagging for Cost Allocation)
+        nest1_1(Cloud Automation)
+        nest1_2([Cloud Architecture Design])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    N8 --> nest0_0
+    nest0_1 --> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N8 -.-> nest1_0
+    nest1_2 --> N12
+    N10 --> S0
+    S0 -.-> N13
+    S0 -.-> N16
+    S0 --> N12
+    N5 --> S1
+    S1 -.-> N13
+    S1 --> N16
+    S1 --> N15
+    N1 --> M0
+    N0 -.-> M0
+    M0 -.-> N3
+    style N0 fill:#E4E0DF,stroke:#BDAFA8
+    style N1 fill:#FFDCD6,stroke:#FFB2A5
+    style N2 fill:#FFDCD6,stroke:#FFB2A5
+    style N3 fill:#FFDCD6,stroke:#FFB2A5
+    style N4 fill:#E4E0DF,stroke:#BDAFA8
+    style N5 fill:#E4E0DF,stroke:#BDAFA8
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#E4E0DF,stroke:#BDAFA8
+    style N8 fill:#F3E5F5,stroke:#BA68C8
+    style N9 fill:#E4E0DF,stroke:#BDAFA8
+    style N10 fill:#FFDCD6,stroke:#FFB2A5
+    style N11 fill:#E4E0DF,stroke:#BDAFA8
+    style N12 fill:#E4E0DF,stroke:#BDAFA8
+    style N13 fill:#F3E5F5,stroke:#BA68C8
+    style N14 fill:#E4E0DF,stroke:#BDAFA8
+    style N15 fill:#F3E5F5,stroke:#BA68C8
+    style N16 fill:#E4E0DF,stroke:#BDAFA8
+    style S0 fill:#E4E0DF,stroke:#BDAFA8
+    style S1 fill:#E4E0DF,stroke:#BDAFA8
+    style M0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_2 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_56.txt b/train/mermaid/hard/mermaid_56.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a55ddd7440cff944193522560008ef61a666c009
--- /dev/null
+++ b/train/mermaid/hard/mermaid_56.txt
@@ -0,0 +1,41 @@
+<Battery Monitoring, connectedTo, Pipeline Monitoring>
+<Consumption Logging, connectedTo, Peak Shaving>
+<Consumption Logging, partOf, Circuit Breaker Operation>
+<Cybersecurity for Grid, connectedTo, Grid Balancing>
+<Cybersecurity for Grid, connectedTo, Pipeline Monitoring>
+<Cybersecurity for Grid, connectedTo, Power Plant>
+<Cybersecurity for Grid, connectedTo, Wind Turbine Monitoring>
+<Cybersecurity for Grid, permits, Grid Modernization>
+<Distributed Generation Management, connectedTo, Energy Infrastructure Planning>
+<Distributed Generation Management, partOf, Alert Dispatch>
+<Energy Infrastructure Planning, connectedTo, Battery Monitoring>
+<Energy Infrastructure Planning, partOf, Alert Dispatch>
+<Energy Storage, connectedTo, Grid Balancing>
+<Generator Check, connectedTo, Distributed Generation Management>
+<Generator Check, partOf, Alert Dispatch>
+<Geothermal Power, connectedTo, Substation Automation>
+<Grid Modernization, connectedTo, Load Shedding>
+<Grid Modernization, connectedTo, Oil and Gas Exploration>
+<Grid Modernization, connectedTo, Outage Detection>
+<Grid Modernization, connectedTo, Pipeline Monitoring>
+<Grid Modernization, optimizes, Battery Monitoring>
+<Load Shedding, connectedTo, Sensor Reading>
+<Oil and Gas Exploration, connectedTo, Power Plant>
+<Outage Detection, connectedTo, Oil and Gas Exploration>
+<Peak Shaving, connectedTo, Energy Storage>
+<Peak Shaving, partOf, Circuit Breaker Operation>
+<Pipeline Monitoring, connectedTo, Wind Turbine Monitoring>
+<Power Plant, backs up, Battery Monitoring>
+<Power Plant, connectedTo, Regulatory Compliance>
+<Power Purchase, connectedTo, Battery Monitoring>
+<Power Purchase, connectedTo, Cybersecurity for Grid>
+<Power Purchase, installs, Power Plant>
+<Regulatory Compliance, connectedTo, Generator Check>
+<Regulatory Compliance, partOf, Alert Dispatch>
+<Sensor Reading, connectedTo, Geothermal Power>
+<Substation Automation, measures, Transmission Line Maintenance>
+<Transmission Line Maintenance, connectedTo, Consumption Logging>
+<Transmission Line Maintenance, connectedTo, Energy Storage>
+<Wind Turbine Monitoring, connectedTo, Load Shedding>
+<start, connectedTo, Power Plant>
+<start, connectedTo, Power Purchase>
diff --git a/train/mermaid/hard/mermaid_560.txt b/train/mermaid/hard/mermaid_560.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4ec2ab4df6546e7083945eba762bc5db50d539a5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_560.txt
@@ -0,0 +1,34 @@
+<API Management in Cloud, connectedTo, Cloud Automation>
+<API Management in Cloud, connectedTo, Container Orchestration>
+<API Management in Cloud, connectedTo, Infrastructure as a Service>
+<CI or CD Pipelines in Cloud, connectedTo, Cloud Migration Strategy>
+<Cloud Audit Trails, connectedTo, Data Storage in Cloud>
+<Cloud Automation, connectedTo, Container Orchestration>
+<Cloud Automation, connectedTo, Platform as a Service>
+<Cloud Firewall Configuration, connectedTo, Container Orchestration>
+<Cloud Firewall Configuration, partOf, Load Balancing in Cloud>
+<Cloud Marketplace Integration, connectedTo, API Management in Cloud>
+<Cloud Marketplace Integration, connectedTo, Container Orchestration>
+<Cloud Marketplace Integration, connectedTo, Resource Tagging for Cost Allocation>
+<Cloud Marketplace Integration, provides IaaS, Cloud Audit Trails>
+<Cloud Migration Strategy, connectedTo, Cloud Audit Trails>
+<Cloud Vendor Lock_in Mitigation, connectedTo, Cloud Marketplace Integration>
+<Cloud Vendor Lock_in Mitigation, partOf, Disaster Recovery in Cloud>
+<Compliance in Cloud, connectedTo, Cloud Vendor Lock_in Mitigation>
+<Compliance in Cloud, partOf, Disaster Recovery in Cloud>
+<Container Orchestration, connectedTo, Resource Tagging for Cost Allocation>
+<Hybrid Cloud Deployment, connectedTo, Compliance in Cloud>
+<Hybrid Cloud Deployment, partOf, Disaster Recovery in Cloud>
+<Infrastructure as a Service, connectedTo, Cloud Automation>
+<Multi_Cloud Management, connectedTo, Cloud Marketplace Integration>
+<Multi_Cloud Management, connectedTo, Container Orchestration>
+<Platform as a Service, connectedTo, CI or CD Pipelines in Cloud>
+<Platform as a Service, connectedTo, Container Orchestration>
+<Platform as a Service, connectedTo, Data Storage in Cloud>
+<Platform as a Service, connectedTo, Private Cloud Management>
+<Private Cloud Management, connectedTo, Cloud Firewall Configuration>
+<Private Cloud Management, partOf, Load Balancing in Cloud>
+<Resource Tagging for Cost Allocation, connectedTo, CI or CD Pipelines in Cloud>
+<Resource Tagging for Cost Allocation, connectedTo, Hybrid Cloud Deployment>
+<start, connectedTo, Cloud Automation>
+<start, connectedTo, Multi_Cloud Management>
diff --git a/train/mermaid/hard/mermaid_561.mmd b/train/mermaid/hard/mermaid_561.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3f8aabc7fe441d6365d59532c74c0597cdc9a405
--- /dev/null
+++ b/train/mermaid/hard/mermaid_561.mmd
@@ -0,0 +1,124 @@
+graph BT
+    N0([start])
+    N1[Automation Scripting]
+    N2[/Database Administration/]
+    N3{Network Performance Tuning}
+    N4([Network Design])
+    N5[Power and Cooling Management]
+    N6(Capacity Planning)
+    N7{Disaster Recovery Planning}
+    N8{Mail Server Management}
+    N9{User Account Management}
+    N10{DNS Management}
+    N11[Antivirus and Endpoint Protection]
+    N12(Data Center Management)
+    N13(Server Deployment)
+    N14[[Patch Management]]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Firewall Management
+        nest0_0[/Access Control Systems/]
+        nest0_1[Storage Solutions]
+        nest0_2[(VPN Configuration)]
+        nest0_3[/Proxy Server Configuration/]
+    end
+    subgraph Environmental Monitoring
+        nest1_0[Network Security]
+        nest1_1[[Group Policy Management]]
+        nest1_2[Operating System Installation]
+        nest1_3[(Cloud Integration with On_premise)]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 -.-> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N1 --> nest0_0
+    nest0_3 -.-> N15
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N6 -.-> nest1_0
+    nest1_3 --> N15
+    N0 --> S0
+    S0 --> N10
+    S0 --> N6
+    S0 --> N14
+    S0 -.-> N4
+    N3 -.-> S1
+    S1 -.-> |yes| N10
+    S1 --> N5
+    S1 -.-> N6
+    S1 -.-> N8
+    N4 --> M0
+    N3 --> M0
+    N9 -.-> M0
+    M0 -.-> N14
+    N0 --> M1
+    N3 -.-> M1
+    N7 --> M1
+    M1 --> N10
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#F5F5F5,stroke:#BDBDBD
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_562.mmd b/train/mermaid/hard/mermaid_562.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..457c847d1ec88ac5e58fd6617663bf5be9753bda
--- /dev/null
+++ b/train/mermaid/hard/mermaid_562.mmd
@@ -0,0 +1,154 @@
+graph BT
+    N0([Power and Cooling Management])
+    N1{Troubleshooting and Support}
+    N2(Hardware Procurement)
+    N3[/Rack and Cabinet Management/]
+    N4(Group Policy Management)
+    N5{Remote Access Solutions}
+    N6{Hardware Maintenance}
+    N7[VPN Configuration]
+    N8(Data Center Management)
+    N9(User Account Management)
+    N10(Disaster Recovery Planning)
+    N11[/Mail Server Management/]
+    N12[(Capacity Planning)]
+    N13[Database Administration]
+    N14([IT Asset Management])
+    N15[/DNS Management/]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Network Performance Tuning
+        nest0_0(Environmental Monitoring)
+        nest0_1[/Software Licensing Management/]
+        nest0_2[Network Design]
+    end
+    subgraph Cloud Integration with On_premise
+        nest1_0(System Administration)
+        nest1_1[Backup and Recovery Systems]
+        nest1_2([Proxy Server Configuration])
+        nest1_3[Web Server Configuration]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> |configures load balancers| N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> |performs backups| N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> |monitors performance| nest0_2
+    N7 --> |troubleshoots issues| nest0_0
+    nest0_2 --> N9
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> |plans capacity| N7
+    N13 --> S0
+    S0 -.-> N16
+    S0 --> N15
+    N10 --> S1
+    S1 --> N13
+    S1 --> N15
+    S1 --> N16
+    S1 --> N12
+    N3 -.-> M0
+    N6 --> |manages groups| M0
+    N0 --> M0
+    N7 -.-> M0
+    M0 -.-> N10
+    N4 --> M1
+    N0 --> M1
+    M1 -.-> N11
+    N1 --> M2
+    N3 --> M2
+    N2 --> M2
+    M2 --> N5
+    style N0 fill:#F1F8E9,stroke:#81C784
+    style N1 fill:#F1F8E9,stroke:#81C784
+    style N2 fill:#DACBE3,stroke:#A188D0
+    style N3 fill:#DACBE3,stroke:#A188D0
+    style N4 fill:#FFECB3,stroke:#FFC107
+    style N5 fill:#DACBE3,stroke:#A188D0
+    style N6 fill:#F1F8E9,stroke:#81C784
+    style N7 fill:#FFECB3,stroke:#FFC107
+    style N8 fill:#F1F8E9,stroke:#81C784
+    style N9 fill:#FFECB3,stroke:#FFC107
+    style N10 fill:#DACBE3,stroke:#A188D0
+    style N11 fill:#FFECB3,stroke:#FFC107
+    style N12 fill:#FFECB3,stroke:#FFC107
+    style N13 fill:#DACBE3,stroke:#A188D0
+    style N14 fill:#FFECB3,stroke:#FFC107
+    style N15 fill:#FFECB3,stroke:#FFC107
+    style N16 fill:#FFECB3,stroke:#FFC107
+    style S0 fill:#F1F8E9,stroke:#81C784
+    style S1 fill:#DACBE3,stroke:#A188D0
+    style M0 fill:#DACBE3,stroke:#A188D0
+    style M1 fill:#FFECB3,stroke:#FFC107
+    style M2 fill:#FFECB3,stroke:#FFC107
+    style nest0_0 fill:#F1F8E9,stroke:#81C784
+    style nest0_1 fill:#DACBE3,stroke:#A188D0
+    style nest0_2 fill:#FFECB3,stroke:#FFC107
+    style nest1_0 fill:#FFECB3,stroke:#FFC107
+    style nest1_1 fill:#FFECB3,stroke:#FFC107
+    style nest1_2 fill:#FFECB3,stroke:#FFC107
+    style nest1_3 fill:#F1F8E9,stroke:#81C784
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#FFC107,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_565.mmd b/train/mermaid/hard/mermaid_565.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4abc1e0298a1549e56135c019194c5f19c2ba149
--- /dev/null
+++ b/train/mermaid/hard/mermaid_565.mmd
@@ -0,0 +1,100 @@
+graph LR
+    N0([Access Control Systems])
+    N1[(Capacity Planning)]
+    N2[Remote Access Solutions]
+    N3[[Network Design]]
+    N4{Patch Management}
+    N5(Hardware Procurement)
+    N6{Server Deployment}
+    N7(Automation Scripting)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Disaster Recovery Planning
+        nest0_0[[Load Balancer Setup]]
+        nest0_1[/IT Asset Management/]
+        nest0_2[Troubleshooting and Support]
+    end
+    subgraph Group Policy Management
+        nest1_0[Database Administration]
+        nest1_1{Power and Cooling Management}
+        nest1_2(Cloud Integration with On_premise)
+        nest1_3([Web Server Configuration])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 --> N4
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N3 -.-> |lays cables| nest1_0
+    nest1_3 -.-> N1
+    N0 --> S0
+    S0 --> N7
+    S0 --> N2
+    N4 --> S1
+    S1 -.-> N6
+    S1 --> N7
+    N0 --> M0
+    N1 -.-> M0
+    M0 --> N3
+    N1 --> M2
+    N0 -.-> M2
+    M2 -.-> N3
+    style N0 fill:#DACBE3,stroke:#A188D0
+    style N1 fill:#FFECB3,stroke:#FFC107
+    style N2 fill:#FFECB3,stroke:#FFC107
+    style N3 fill:#FBE9E7,stroke:#FF8A65
+    style N4 fill:#DACBE3,stroke:#A188D0
+    style N5 fill:#FFECB3,stroke:#FFC107
+    style N6 fill:#FBE9E7,stroke:#FF8A65
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#DACBE3,stroke:#A188D0
+    style M2 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_0 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_2 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_0 fill:#FFECB3,stroke:#FFC107
+    style nest1_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_2 fill:#DACBE3,stroke:#A188D0
+    style nest1_3 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_566.mmd b/train/mermaid/hard/mermaid_566.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b9cee8764f20d67757fe916baabea5f185b2a89f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_566.mmd
@@ -0,0 +1,92 @@
+graph LR
+    N0([Troubleshooting and Support])
+    N1[(Storage Solutions)]
+    N2[/User Account Management/]
+    N3[Database Administration]
+    N4[[Network Security]]
+    N5(Network Performance Tuning)
+    N6[/Proxy Server Configuration/]
+    N7[/Patch Management/]
+    N8(Virtual Desktop Infrastructure)
+    N9([Load Balancer Setup])
+    N10[(Directory Services)]
+    S0(( ))
+    S1(( ))
+    subgraph Power and Cooling Management
+        nest0_0{Operating System Installation}
+        nest0_1[[Automation Scripting]]
+        nest0_2[(Software Licensing Management)]
+    end
+    subgraph Server Deployment
+        nest1_0([Web Server Configuration])
+        nest1_1([Data Center Management])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |manages mail servers| N7
+    N7 -.-> |optimizes environments| N8
+    N8 --> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N9 --> nest0_0
+    nest0_2 --> N7
+    nest1_0 --> nest1_1
+    N7 --> nest1_0
+    nest1_1 --> N3
+    N1 -.-> S0
+    S0 --> N6
+    S0 --> |configures load balancers| N9
+    S0 --> N8
+    N0 -.-> S1
+    S1 -.-> N7
+    S1 --> N9
+    N3 -.-> N2
+    style N0 fill:#C8EDFF,stroke:#82DAFF
+    style N1 fill:#C8EDFF,stroke:#82DAFF
+    style N2 fill:#F8BBD0,stroke:#E91E63
+    style N3 fill:#FCE4EC,stroke:#F06292
+    style N4 fill:#C8EDFF,stroke:#82DAFF
+    style N5 fill:#FCE4EC,stroke:#F06292
+    style N6 fill:#FCE4EC,stroke:#F06292
+    style N7 fill:#F8BBD0,stroke:#E91E63
+    style N8 fill:#F8BBD0,stroke:#E91E63
+    style N9 fill:#F8BBD0,stroke:#E91E63
+    style N10 fill:#F8BBD0,stroke:#E91E63
+    style S0 fill:#C8EDFF,stroke:#82DAFF
+    style S1 fill:#FCE4EC,stroke:#F06292
+    style nest0_0 fill:#F8BBD0,stroke:#E91E63
+    style nest0_1 fill:#FCE4EC,stroke:#F06292
+    style nest0_2 fill:#F8BBD0,stroke:#E91E63
+    style nest1_0 fill:#F8BBD0,stroke:#E91E63
+    style nest1_1 fill:#FCE4EC,stroke:#F06292
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F06292,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_566.txt b/train/mermaid/hard/mermaid_566.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8b76616f6ce165282adc9c9badaf1e90a2f4227b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_566.txt
@@ -0,0 +1,28 @@
+<Automation Scripting, connectedTo, Software Licensing Management>
+<Automation Scripting, partOf, Power and Cooling Management>
+<Data Center Management, connectedTo, Database Administration>
+<Data Center Management, partOf, Server Deployment>
+<Database Administration, connectedTo, Network Security>
+<Database Administration, connectedTo, User Account Management>
+<Load Balancer Setup, connectedTo, Directory Services>
+<Load Balancer Setup, connectedTo, Operating System Installation>
+<Network Performance Tuning, connectedTo, Proxy Server Configuration>
+<Network Security, connectedTo, Network Performance Tuning>
+<Operating System Installation, connectedTo, Automation Scripting>
+<Operating System Installation, partOf, Power and Cooling Management>
+<Patch Management, connectedTo, Web Server Configuration>
+<Patch Management, optimizes environments, Virtual Desktop Infrastructure>
+<Proxy Server Configuration, manages mail servers, Patch Management>
+<Software Licensing Management, connectedTo, Patch Management>
+<Software Licensing Management, partOf, Power and Cooling Management>
+<Storage Solutions, configures load balancers, Load Balancer Setup>
+<Storage Solutions, connectedTo, Proxy Server Configuration>
+<Storage Solutions, connectedTo, User Account Management>
+<Storage Solutions, connectedTo, Virtual Desktop Infrastructure>
+<Troubleshooting and Support, connectedTo, Load Balancer Setup>
+<Troubleshooting and Support, connectedTo, Patch Management>
+<Troubleshooting and Support, connectedTo, Storage Solutions>
+<User Account Management, connectedTo, Database Administration>
+<Virtual Desktop Infrastructure, connectedTo, Load Balancer Setup>
+<Web Server Configuration, connectedTo, Data Center Management>
+<Web Server Configuration, partOf, Server Deployment>
diff --git a/train/mermaid/hard/mermaid_567.mmd b/train/mermaid/hard/mermaid_567.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ef057cfd3515c35d9c46f37c689456bc779a7926
--- /dev/null
+++ b/train/mermaid/hard/mermaid_567.mmd
@@ -0,0 +1,140 @@
+graph TD
+    N0([DNS Management])
+    N1[(IT Asset Management)]
+    N2([Mail Server Management])
+    N3[/Cloud Integration with On_premise/]
+    N4(Storage Solutions)
+    N5[/VPN Configuration/]
+    N6[Hardware Procurement]
+    N7(Troubleshooting and Support)
+    N8(Cabling and Wiring)
+    N9[[Hardware Maintenance]]
+    N10[/Disaster Recovery Planning/]
+    N11[Backup and Recovery Systems]
+    N12{Antivirus and Endpoint Protection}
+    N13[Remote Access Solutions]
+    N14[(Network Security)]
+    N15[[Rack and Cabinet Management]]
+    N16[Directory Services]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Proxy Server Configuration
+        nest0_0[(Server Deployment)]
+        nest0_1[[Data Center Management]]
+    end
+    subgraph Power and Cooling Management
+        nest1_0[Virtual Desktop Infrastructure]
+        nest1_1[/Environmental Monitoring/]
+        nest1_2(Virtualization)
+        nest1_3([Database Administration])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    N16 --> N17
+    nest0_0 --> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 --> N12
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> |designs networks| nest1_2
+    nest1_2 --> nest1_3
+    N11 -.-> nest1_0
+    nest1_3 -.-> N7
+    N11 --> S0
+    S0 -.-> N17
+    S0 -.-> N16
+    S0 --> N13
+    N5 -.-> S1
+    S1 -.-> N13
+    S1 -.-> N10
+    N7 -.-> M0
+    N0 -.-> M0
+    M0 -.-> N15
+    N4 --> |manages remote access| M1
+    N6 --> M1
+    N0 --> M1
+    M1 --> N10
+    style N0 fill:#D3D7EB,stroke:#8C9EFF
+    style N1 fill:#FCFCE7,stroke:#DCE775
+    style N2 fill:#FCFCE7,stroke:#DCE775
+    style N3 fill:#E6EE9C,stroke:#CDDC39
+    style N4 fill:#E6EE9C,stroke:#CDDC39
+    style N5 fill:#E6EE9C,stroke:#CDDC39
+    style N6 fill:#FCFCE7,stroke:#DCE775
+    style N7 fill:#D3D7EB,stroke:#8C9EFF
+    style N8 fill:#E6EE9C,stroke:#CDDC39
+    style N9 fill:#E6EE9C,stroke:#CDDC39
+    style N10 fill:#D3D7EB,stroke:#8C9EFF
+    style N11 fill:#FCFCE7,stroke:#DCE775
+    style N12 fill:#E6EE9C,stroke:#CDDC39
+    style N13 fill:#D3D7EB,stroke:#8C9EFF
+    style N14 fill:#FCFCE7,stroke:#DCE775
+    style N15 fill:#FCFCE7,stroke:#DCE775
+    style N16 fill:#E6EE9C,stroke:#CDDC39
+    style N17 fill:#E6EE9C,stroke:#CDDC39
+    style S0 fill:#E6EE9C,stroke:#CDDC39
+    style S1 fill:#E6EE9C,stroke:#CDDC39
+    style M0 fill:#E6EE9C,stroke:#CDDC39
+    style M1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest0_0 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest1_0 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_1 fill:#FCFCE7,stroke:#DCE775
+    style nest1_2 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_3 fill:#D3D7EB,stroke:#8C9EFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#8C9EFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_567.txt b/train/mermaid/hard/mermaid_567.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5592bea9fb95366fe5f349d4af7d93cc6cbfbb69
--- /dev/null
+++ b/train/mermaid/hard/mermaid_567.txt
@@ -0,0 +1,41 @@
+<Antivirus and Endpoint Protection, connectedTo, Remote Access Solutions>
+<Backup and Recovery Systems, connectedTo, Antivirus and Endpoint Protection>
+<Backup and Recovery Systems, connectedTo, Directory Services>
+<Backup and Recovery Systems, connectedTo, Remote Access Solutions>
+<Backup and Recovery Systems, connectedTo, Virtual Desktop Infrastructure>
+<Backup and Recovery Systems, connectedTo, end>
+<Cabling and Wiring, connectedTo, Hardware Maintenance>
+<Cloud Integration with On_premise, connectedTo, Storage Solutions>
+<DNS Management, connectedTo, Disaster Recovery Planning>
+<DNS Management, connectedTo, IT Asset Management>
+<DNS Management, connectedTo, Rack and Cabinet Management>
+<Data Center Management, connectedTo, Antivirus and Endpoint Protection>
+<Data Center Management, partOf, Proxy Server Configuration>
+<Database Administration, connectedTo, Troubleshooting and Support>
+<Database Administration, partOf, Power and Cooling Management>
+<Directory Services, connectedTo, end>
+<Disaster Recovery Planning, connectedTo, Backup and Recovery Systems>
+<Environmental Monitoring, designs networks, Virtualization>
+<Environmental Monitoring, partOf, Power and Cooling Management>
+<Hardware Maintenance, connectedTo, Disaster Recovery Planning>
+<Hardware Procurement, connectedTo, Disaster Recovery Planning>
+<Hardware Procurement, connectedTo, Server Deployment>
+<Hardware Procurement, connectedTo, Troubleshooting and Support>
+<IT Asset Management, connectedTo, Mail Server Management>
+<Mail Server Management, connectedTo, Cloud Integration with On_premise>
+<Network Security, connectedTo, Rack and Cabinet Management>
+<Rack and Cabinet Management, connectedTo, Directory Services>
+<Remote Access Solutions, connectedTo, Network Security>
+<Server Deployment, connectedTo, Data Center Management>
+<Server Deployment, partOf, Proxy Server Configuration>
+<Storage Solutions, connectedTo, VPN Configuration>
+<Storage Solutions, manages remote access, Disaster Recovery Planning>
+<Troubleshooting and Support, connectedTo, Cabling and Wiring>
+<Troubleshooting and Support, connectedTo, Rack and Cabinet Management>
+<VPN Configuration, connectedTo, Disaster Recovery Planning>
+<VPN Configuration, connectedTo, Hardware Procurement>
+<VPN Configuration, connectedTo, Remote Access Solutions>
+<Virtual Desktop Infrastructure, connectedTo, Environmental Monitoring>
+<Virtual Desktop Infrastructure, partOf, Power and Cooling Management>
+<Virtualization, connectedTo, Database Administration>
+<Virtualization, partOf, Power and Cooling Management>
diff --git a/train/mermaid/hard/mermaid_568.mmd b/train/mermaid/hard/mermaid_568.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6299ad0e724c5e8eb7596ba73f0bc597c0ebb25a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_568.mmd
@@ -0,0 +1,120 @@
+graph LR
+    N0([start])
+    N1(Disaster Recovery Planning)
+    N2(Cabling and Wiring)
+    N3[(IT Asset Management)]
+    N4(DNS Management)
+    N5[(Operating System Installation)]
+    N6[[System Administration]]
+    N7([Automation Scripting])
+    N8(Environmental Monitoring)
+    N9(Capacity Planning)
+    N10([Virtualization])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Monitoring and Alerting
+        nest0_0[/Hardware Procurement/]
+        nest0_1[(Server Deployment)]
+    end
+    subgraph Rack and Cabinet Management
+        nest1_0[/Patch Management/]
+        nest1_1{Load Balancer Setup}
+    end
+    N0 -.-> |plans capacity| N1
+    N1 --> |deploys VDIs| N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> |plans capacity| N9
+    N9 -.-> N10
+    nest0_0 -.-> |manages directories| nest0_1
+    N5 -.-> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 --> nest1_1
+    N4 --> nest1_0
+    nest1_1 --> N6
+    N3 -.-> S0
+    S0 --> |installs racks| N8
+    S0 -.-> |integrates clouds| N7
+    N1 -.-> S1
+    S1 --> N4
+    S1 -.-> N7
+    S1 --> N10
+    N0 -.-> S2
+    S2 --> N3
+    S2 -.-> N2
+    N1 -.-> M0
+    N2 -.-> M0
+    N6 -.-> M0
+    M0 -.-> N9
+    N0 --> M1
+    N1 --> M1
+    M1 --> N3
+    N1 -.-> M2
+    N5 -.-> M2
+    M2 -.-> N8
+    style N0 fill:#D3F7F9,stroke:#80DDEA
+    style N1 fill:#D3F7F9,stroke:#80DDEA
+    style N2 fill:#D3F7F9,stroke:#80DDEA
+    style N3 fill:#EBEBEB,stroke:#E0E0E0
+    style N4 fill:#F9FBE7,stroke:#DCE775
+    style N5 fill:#D3F7F9,stroke:#80DDEA
+    style N6 fill:#F9FBE7,stroke:#DCE775
+    style N7 fill:#EBEBEB,stroke:#E0E0E0
+    style N8 fill:#D3F7F9,stroke:#80DDEA
+    style N9 fill:#F9FBE7,stroke:#DCE775
+    style N10 fill:#EBEBEB,stroke:#E0E0E0
+    style S0 fill:#EBEBEB,stroke:#E0E0E0
+    style S1 fill:#D3F7F9,stroke:#80DDEA
+    style S2 fill:#EBEBEB,stroke:#E0E0E0
+    style M0 fill:#EBEBEB,stroke:#E0E0E0
+    style M1 fill:#F9FBE7,stroke:#DCE775
+    style M2 fill:#F9FBE7,stroke:#DCE775
+    style nest0_0 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_1 fill:#F9FBE7,stroke:#DCE775
+    style nest1_0 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_1 fill:#D3F7F9,stroke:#80DDEA
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#DCE775,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_568.txt b/train/mermaid/hard/mermaid_568.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a2b0c4cb37c03e6a83a0cb5855b13f1a837c1135
--- /dev/null
+++ b/train/mermaid/hard/mermaid_568.txt
@@ -0,0 +1,33 @@
+<Automation Scripting, connectedTo, Environmental Monitoring>
+<Cabling and Wiring, connectedTo, Capacity Planning>
+<Cabling and Wiring, connectedTo, IT Asset Management>
+<Capacity Planning, connectedTo, Virtualization>
+<DNS Management, connectedTo, Operating System Installation>
+<DNS Management, connectedTo, Patch Management>
+<Disaster Recovery Planning, connectedTo, Automation Scripting>
+<Disaster Recovery Planning, connectedTo, Capacity Planning>
+<Disaster Recovery Planning, connectedTo, DNS Management>
+<Disaster Recovery Planning, connectedTo, Environmental Monitoring>
+<Disaster Recovery Planning, connectedTo, IT Asset Management>
+<Disaster Recovery Planning, connectedTo, Virtualization>
+<Disaster Recovery Planning, deploys VDIs, Cabling and Wiring>
+<Environmental Monitoring, plans capacity, Capacity Planning>
+<Hardware Procurement, manages directories, Server Deployment>
+<Hardware Procurement, partOf, Monitoring and Alerting>
+<IT Asset Management, connectedTo, DNS Management>
+<IT Asset Management, installs racks, Environmental Monitoring>
+<IT Asset Management, integrates clouds, Automation Scripting>
+<Load Balancer Setup, connectedTo, System Administration>
+<Load Balancer Setup, partOf, Rack and Cabinet Management>
+<Operating System Installation, connectedTo, Environmental Monitoring>
+<Operating System Installation, connectedTo, Hardware Procurement>
+<Operating System Installation, connectedTo, System Administration>
+<Patch Management, connectedTo, Load Balancer Setup>
+<Patch Management, partOf, Rack and Cabinet Management>
+<Server Deployment, connectedTo, DNS Management>
+<Server Deployment, partOf, Monitoring and Alerting>
+<System Administration, connectedTo, Automation Scripting>
+<System Administration, connectedTo, Capacity Planning>
+<start, connectedTo, Cabling and Wiring>
+<start, connectedTo, IT Asset Management>
+<start, plans capacity, Disaster Recovery Planning>
diff --git a/train/mermaid/hard/mermaid_57.mmd b/train/mermaid/hard/mermaid_57.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5f009fcad8cefaceaae358b27fde6cb72e771369
--- /dev/null
+++ b/train/mermaid/hard/mermaid_57.mmd
@@ -0,0 +1,106 @@
+graph LR
+    N0([start])
+    N1[[Client Interview]]
+    N2(Evidence Collection)
+    N3{Corporate Formation}
+    N4[/Cross_Examination/]
+    N5{Case Filing}
+    N6[[Legal Research]]
+    N7(Witness Testimony)
+    N8[/Trial Session/]
+    N9[(Sentencing)]
+    N10[Document Drafting]
+    N11{Amicus Brief Submission}
+    N12{Pre_Trial Hearing}
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Pro Bono Work
+        nest0_0{Plea Bargain}
+        nest0_1[Trademark Registration]
+        nest0_2[[Immigration Petition]]
+        nest0_3[/Due Diligence/]
+    end
+    subgraph Estate Planning
+        nest1_0[/Intel Property Licensing/]
+        nest1_1(Divorce Proceedings)
+        nest1_2[Judgment Writing]
+    end
+    N0 --> |no| N1
+    N1 --> N2
+    N2 -.-> |yes| N3
+    N3 --> N4
+    N4 --> |yes| N5
+    N5 -.-> N6
+    N6 -.-> |yes| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N7 --> nest0_0
+    nest0_3 --> N3
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N7 -.-> nest1_0
+    nest1_2 -.-> N8
+    N1 --> S0
+    S0 --> |yes| N11
+    S0 -.-> N5
+    S0 -.-> N8
+    N4 -.-> S1
+    S1 --> N9
+    S1 -.-> N12
+    N9 -.-> M0
+    N2 -.-> M0
+    N6 --> |yes| M0
+    M0 --> N11
+    N4 --> M1
+    N0 --> M1
+    N6 -.-> M1
+    M1 -.-> N8
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#F0F0F0,stroke:#D2D2D2
+    style M0 fill:#F5F5F5,stroke:#BDBDBD
+    style M1 fill:#F0F0F0,stroke:#D2D2D2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_572.mmd b/train/mermaid/hard/mermaid_572.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..45c3b50ddb013499cb8a3b0496bf3c3c7c383e8f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_572.mmd
@@ -0,0 +1,116 @@
+graph BT
+    N0([start])
+    N1[/Serverless Deployment/]
+    N2[Container Orchestration]
+    N3[Feature Flags]
+    N4[[Version Control]]
+    N5[Code Quality Checks]
+    N6[(Alerting and Incident Response)]
+    N7[[Immutable Infrastructure]]
+    N8([Rollback Strategies])
+    N9(Site Reliability Engineering Principles)
+    N10(Cost Optimization in Cloud DevOps)
+    N11([Configuration Management])
+    N12{Infrastructure Provisioning}
+    N13[/Chaos Engineering/]
+    N14[Security in DevOps]
+    N15[(Cross_Functional Team Collaboration)]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Infrastructure as Code
+        nest0_0[(Collaboration Tools)]
+        nest0_1(Automated Testing)
+        nest0_2{Release Management}
+    end
+    subgraph Observability Implementation
+        nest1_0(Automated Deployment)
+        nest1_1(Canary Releases)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> |yes| nest0_1
+    nest0_1 --> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 --> N11
+    nest1_0 --> nest1_1
+    N7 -.-> nest1_0
+    nest1_1 -.-> |yes| N15
+    N11 -.-> S0
+    S0 --> |no| N15
+    S0 -.-> N16
+    N5 --> S1
+    S1 --> N10
+    S1 --> N9
+    N12 --> S2
+    S2 -.-> N14
+    S2 --> |no| N15
+    S2 --> N16
+    N2 --> M0
+    N4 --> M0
+    M0 --> N13
+    N4 -.-> M1
+    N0 -.-> M1
+    M1 -.-> N6
+    style S0 fill:#FFDCD6,stroke:#FFB2A5
+    style S1 fill:#FFCCBC,stroke:#FF5722
+    style S2 fill:#FAEBF3,stroke:#F7BEE0
+    style M0 fill:#FAEBF3,stroke:#F7BEE0
+    style M1 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_573.txt b/train/mermaid/hard/mermaid_573.txt
new file mode 100644
index 0000000000000000000000000000000000000000..471c2961b771f7601e294d7c38a637768654f5a5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_573.txt
@@ -0,0 +1,27 @@
+<Alerting and Incident Response, connectedTo, Environment Management>
+<Alerting and Incident Response, connectedTo, Microservices Architecture>
+<Alerting and Incident Response, connectedTo, Pipeline Automation>
+<Automated Rollbacks, connectedTo, Infrastructure Provisioning>
+<Automated Rollbacks, partOf, Static Code Analysis>
+<Cloud Native Development, connectedTo, Alerting and Incident Response>
+<Cloud Native Development, partOf, Continuous Delivery>
+<Configuration Management, connectedTo, Secrets Management>
+<Configuration Management, connectedTo, Serverless Deployment>
+<Configuration Management, connectedTo, Version Control>
+<Containerization, connectedTo, Cloud Native Development>
+<Containerization, partOf, Continuous Delivery>
+<Environment Management, connectedTo, GitOps>
+<Environment Management, enables CD, Pipeline Automation>
+<GitOps, connectedTo, Automated Rollbacks>
+<GitOps, partOf, Static Code Analysis>
+<Infrastructure Provisioning, connectedTo, Version Control>
+<Infrastructure Provisioning, partOf, Static Code Analysis>
+<Microservices Architecture, performs static analysis, Environment Management>
+<Observability Implementation, connectedTo, Containerization>
+<Observability Implementation, partOf, Continuous Delivery>
+<Release Management, connectedTo, Configuration Management>
+<Release Management, connectedTo, Secrets Management>
+<Secrets Management, connectedTo, Alerting and Incident Response>
+<Serverless Deployment, connectedTo, Observability Implementation>
+<Serverless Deployment, partOf, Continuous Delivery>
+<Version Control, connectedTo, Secrets Management>
diff --git a/train/mermaid/hard/mermaid_575.txt b/train/mermaid/hard/mermaid_575.txt
new file mode 100644
index 0000000000000000000000000000000000000000..31dcde68f8183bda0e22c3be956e3fe1583c0508
--- /dev/null
+++ b/train/mermaid/hard/mermaid_575.txt
@@ -0,0 +1,39 @@
+<Alerting and Incident Response, connectedTo, Microservices Architecture>
+<Automated Deployment, connectedTo, Immutable Infrastructure>
+<Chaos Engineering, connectedTo, Infrastructure as Code>
+<Chaos Engineering, connectedTo, Security in DevOps>
+<Cloud Native Development, connectedTo, Continuous Integration>
+<Collaboration Tools, connectedTo, Cross_Functional Team Collaboration>
+<Collaboration Tools, partOf, Configuration Management>
+<Container Orchestration, connectedTo, Automated Deployment>
+<Continuous Delivery, connectedTo, Cloud Native Development>
+<Continuous Delivery, connectedTo, Continuous Integration>
+<Continuous Delivery, connectedTo, Security in DevOps>
+<Continuous Integration, connectedTo, Chaos Engineering>
+<Continuous Integration, connectedTo, Security in DevOps>
+<Cross_Functional Team Collaboration, connectedTo, Version Control>
+<Cross_Functional Team Collaboration, partOf, Configuration Management>
+<Environment Management, connectedTo, Continuous Delivery>
+<Feature Flags, connectedTo, Feedback Loops>
+<Feature Flags, connectedTo, Rollback Strategies>
+<Feedback Loops, connectedTo, Environment Management>
+<Infrastructure as Code, connectedTo, Security in DevOps>
+<Microservices Architecture, connectedTo, Pipeline Automation>
+<Monitoring and Logging, connectedTo, Post_Mortem Analysis>
+<Monitoring and Logging, partOf, Automated Rollbacks>
+<Pipeline Automation, connectedTo, Collaboration Tools>
+<Pipeline Automation, connectedTo, Container Orchestration>
+<Post_Mortem Analysis, connectedTo, Immutable Infrastructure>
+<Post_Mortem Analysis, partOf, Automated Rollbacks>
+<Rollback Strategies, integrates security, Monitoring and Logging>
+<Rollback Strategies, partOf, Automated Rollbacks>
+<Security in DevOps, connectedTo, Alerting and Incident Response>
+<Site Reliability Engineering Principles, connectedTo, Environment Management>
+<Site Reliability Engineering Principles, connectedTo, Version Control>
+<Site Reliability Engineering Principles, partOf, Configuration Management>
+<Version Control, connectedTo, Site Reliability Engineering Principles>
+<Version Control, partOf, Configuration Management>
+<start, connectedTo, Alerting and Incident Response>
+<start, connectedTo, Automated Deployment>
+<start, connectedTo, Continuous Integration>
+<start, connectedTo, Feature Flags>
diff --git a/train/mermaid/hard/mermaid_576.txt b/train/mermaid/hard/mermaid_576.txt
new file mode 100644
index 0000000000000000000000000000000000000000..59be2098b974a1e9cebc38ac4910b2442392642b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_576.txt
@@ -0,0 +1,35 @@
+<Alerting and Incident Response, connectedTo, Code Quality Checks>
+<Automated Testing, connectedTo, Canary Releases>
+<Blue_Green Deployments, connectedTo, Performance Metrics Analysis>
+<Blue_Green Deployments, partOf, Release Management>
+<Canary Releases, connectedTo, Post_Mortem Analysis>
+<Cloud Native Development, connectedTo, Automated Testing>
+<Code Quality Checks, connectedTo, Secrets Management>
+<Configuration Management, connectedTo, Alerting and Incident Response>
+<Continuous Integration, connectedTo, Environment Management>
+<Continuous Integration, partOf, Release Management>
+<Cross_Functional Team Collaboration, connectedTo, end>
+<Cross_Functional Team Collaboration, partOf, Infrastructure as Code>
+<Dynamic Application Security Testing, connectedTo, Rollback Strategies>
+<Environment Management, connectedTo, Site Reliability Engineering Principles>
+<Environment Management, partOf, Release Management>
+<Feedback Loops, connectedTo, end>
+<Performance Metrics Analysis, connectedTo, Rollback Strategies>
+<Performance Metrics Analysis, connectedTo, Static Code Analysis>
+<Post_Mortem Analysis, connectedTo, Dynamic Application Security Testing>
+<Post_Mortem Analysis, connectedTo, Serverless Deployment>
+<Post_Mortem Analysis, no, Rollback Strategies>
+<Rollback Strategies, connectedTo, Feedback Loops>
+<Secrets Management, connectedTo, Cloud Native Development>
+<Secrets Management, connectedTo, Continuous Integration>
+<Secrets Management, connectedTo, Dynamic Application Security Testing>
+<Secrets Management, connectedTo, Post_Mortem Analysis>
+<Serverless Deployment, partOf, Infrastructure as Code>
+<Serverless Deployment, yes, Cross_Functional Team Collaboration>
+<Site Reliability Engineering Principles, connectedTo, Blue_Green Deployments>
+<Site Reliability Engineering Principles, partOf, Release Management>
+<Static Code Analysis, connectedTo, Configuration Management>
+<start, connectedTo, Dynamic Application Security Testing>
+<start, connectedTo, end>
+<start, no, Configuration Management>
+<start, yes, Performance Metrics Analysis>
diff --git a/train/mermaid/hard/mermaid_579.txt b/train/mermaid/hard/mermaid_579.txt
new file mode 100644
index 0000000000000000000000000000000000000000..814e0f3dc7f39f8b0a69257d43ece2f9edadfe6e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_579.txt
@@ -0,0 +1,38 @@
+<API Development, connectedTo, Backend Development>
+<API Development, partOf, Compiler Design>
+<Algorithm Design, connectedTo, Testing Frameworks>
+<Backend Development, connectedTo, Game Development>
+<Backend Development, partOf, Compiler Design>
+<Bug Fixing, connectedTo, Testing Frameworks>
+<Bug Fixing, connectedTo, User Experience Design>
+<Cloud_Native Development, connectedTo, Algorithm Design>
+<Cloud_Native Development, partOf, Agile Methodologies>
+<Containerization, connectedTo, Algorithm Design>
+<Containerization, connectedTo, Maintenance>
+<Containerization, connectedTo, Testing Frameworks>
+<Database Design, connectedTo, Containerization>
+<Deployment, connectedTo, API Development>
+<Deployment, partOf, Compiler Design>
+<Embedded Systems Development, connectedTo, Containerization>
+<Embedded Systems Development, connectedTo, Continuous Delivery>
+<Embedded Systems Development, connectedTo, Database Design>
+<Embedded Systems Development, connectedTo, Deployment>
+<Embedded Systems Development, tests systems, Algorithm Design>
+<Game Development, connectedTo, Embedded Systems Development>
+<Game Development, partOf, Compiler Design>
+<Maintenance, connectedTo, Algorithm Design>
+<Scalability Design, connectedTo, Unit Testing>
+<Scalability Design, partOf, Agile Methodologies>
+<System Testing, connectedTo, Containerization>
+<System Testing, connectedTo, Embedded Systems Development>
+<System Testing, connectedTo, Scalability Design>
+<System Testing, connectedTo, Testing Frameworks>
+<Testing Frameworks, connectedTo, Continuous Delivery>
+<Unit Testing, connectedTo, Cloud_Native Development>
+<Unit Testing, partOf, Agile Methodologies>
+<User Experience Design, connectedTo, Containerization>
+<User Experience Design, connectedTo, System Testing>
+<start, connectedTo, Algorithm Design>
+<start, connectedTo, Bug Fixing>
+<start, connectedTo, Containerization>
+<start, connectedTo, Testing Frameworks>
diff --git a/train/mermaid/hard/mermaid_582.txt b/train/mermaid/hard/mermaid_582.txt
new file mode 100644
index 0000000000000000000000000000000000000000..41d52f4338f4ef24479c21e8c44763d6f3197dca
--- /dev/null
+++ b/train/mermaid/hard/mermaid_582.txt
@@ -0,0 +1,43 @@
+<Architecture Planning, connectedTo, Integration Testing>
+<Architecture Planning, partOf, Requirements Gathering>
+<Backend Development, connectedTo, Compiler Design>
+<Backend Development, connectedTo, Continuous Delivery>
+<Backend Development, connectedTo, Embedded Systems Development>
+<Backend Development, connectedTo, Maintenance>
+<Bug Fixing, connectedTo, Embedded Systems Development>
+<Cloud_Native Development, connectedTo, Desktop Application Development>
+<Cloud_Native Development, partOf, Requirements Gathering>
+<Coding, connectedTo, System Design>
+<Coding, partOf, Containerization>
+<Compiler Design, codes features, Embedded Systems Development>
+<Compiler Design, connectedTo, Bug Fixing>
+<Compiler Design, connectedTo, Cloud_Native Development>
+<Compiler Design, connectedTo, Continuous Delivery>
+<Compiler Design, connectedTo, Embedded Systems Development>
+<Compiler Design, connectedTo, Version Control>
+<Compiler Design, ensures scalability, Maintenance>
+<Continuous Delivery, connectedTo, Maintenance>
+<Continuous Integration, connectedTo, Security Hardening>
+<Continuous Integration, partOf, Containerization>
+<Data Structures Implementation, connectedTo, Microservices Architecture>
+<Desktop Application Development, connectedTo, Architecture Planning>
+<Desktop Application Development, partOf, Requirements Gathering>
+<Documentation, connectedTo, Coding>
+<Documentation, partOf, Containerization>
+<Embedded Systems Development, connectedTo, Continuous Delivery>
+<Embedded Systems Development, connectedTo, Documentation>
+<Integration Testing, partOf, Requirements Gathering>
+<Integration Testing, performs refactoring, Continuous Delivery>
+<Microservices Architecture, connectedTo, Backend Development>
+<Microservices Architecture, connectedTo, Compiler Design>
+<Microservices Architecture, connectedTo, Security Hardening>
+<Refactoring, connectedTo, Backend Development>
+<Refactoring, connectedTo, Compiler Design>
+<Refactoring, connectedTo, Data Structures Implementation>
+<Refactoring, maintains code, Bug Fixing>
+<Security Hardening, connectedTo, Backend Development>
+<System Design, partOf, Containerization>
+<System Design, writes documentation, Continuous Integration>
+<Version Control, connectedTo, Bug Fixing>
+<start, connectedTo, Bug Fixing>
+<start, connectedTo, Refactoring>
diff --git a/train/mermaid/hard/mermaid_584.txt b/train/mermaid/hard/mermaid_584.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9eeb27168bc23ada1c5c7179b672dee3f8ef119f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_584.txt
@@ -0,0 +1,39 @@
+<Agile Methodologies, connectedTo, Backend Development>
+<Agile Methodologies, partOf, Bug Fixing>
+<Algorithm Design, connectedTo, System Testing>
+<Architecture Planning, partOf, Coding>
+<Architecture Planning, yes, end>
+<Backend Development, connectedTo, Maintenance>
+<Cloud_Native Development, connectedTo, Continuous Integration>
+<Containerization, connectedTo, Database Design>
+<Containerization, connectedTo, Operating System Development>
+<Continuous Integration, connectedTo, Unit Testing>
+<Database Design, connectedTo, System Design>
+<Desktop Application Development, connectedTo, Cloud_Native Development>
+<Game Development, connectedTo, Agile Methodologies>
+<Game Development, partOf, Bug Fixing>
+<Integration Testing, connectedTo, Database Design>
+<Maintenance, connectedTo, Desktop Application Development>
+<Maintenance, connectedTo, Game Development>
+<Mobile Application Development, connectedTo, Cloud_Native Development>
+<Mobile Application Development, connectedTo, Containerization>
+<Mobile Application Development, connectedTo, Continuous Integration>
+<Mobile Application Development, connectedTo, Database Design>
+<Mobile Application Development, connectedTo, Desktop Application Development>
+<Mobile Application Development, connectedTo, Operating System Development>
+<Operating System Development, connectedTo, Backend Development>
+<Operating System Development, connectedTo, Desktop Application Development>
+<Operating System Development, connectedTo, Integration Testing>
+<Operating System Development, no, Cloud_Native Development>
+<Operating System Development, yes, Backend Development>
+<System Design, connectedTo, Backend Development>
+<System Design, connectedTo, Web Application Development>
+<System Testing, connectedTo, end>
+<Technical Debt Management, connectedTo, Architecture Planning>
+<Technical Debt Management, partOf, Coding>
+<Unit Testing, connectedTo, Algorithm Design>
+<Web Application Development, connectedTo, Technical Debt Management>
+<Web Application Development, partOf, Coding>
+<start, connectedTo, Database Design>
+<start, connectedTo, Mobile Application Development>
+<start, connectedTo, Operating System Development>
diff --git a/train/mermaid/hard/mermaid_585.mmd b/train/mermaid/hard/mermaid_585.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..884456f882337b9e763b1a99993b9b2fe84b7f68
--- /dev/null
+++ b/train/mermaid/hard/mermaid_585.mmd
@@ -0,0 +1,130 @@
+graph BT
+    N0([Optical Module Design])
+    N1([Enclosure Design])
+    N2([High_Speed Digital Design])
+    N3[ASIC Design]
+    N4[Failure Analysis]
+    N5[/Test Fixture Design/]
+    N6(Testing and Validation)
+    N7(Power Management Design)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Sensor Integration
+        nest0_0[[Supply Chain Management for Components]]
+        nest0_1{Microcontroller Programming}
+        nest0_2[[Actuator Control]]
+        nest0_3([Intellectual Property Protection])
+    end
+    subgraph Circuit Design
+        nest1_0[(Reliability Testing)]
+        nest1_1([Thermal Management])
+        nest1_2[Cost Optimization]
+        nest1_3(Schematic Capture)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N2 -.-> |manages supply chains| nest0_0
+    nest0_3 --> N1
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N2 -.-> |analyzes failures| nest1_0
+    nest1_3 --> N5
+    N1 --> S0
+    S0 --> N5
+    S0 -.-> N7
+    S0 --> |selects components| N3
+    N3 --> S1
+    S1 --> N6
+    S1 -.-> N7
+    N1 --> S2
+    S2 -.-> N7
+    S2 --> N6
+    S2 -.-> N3
+    S2 -.-> N4
+    N1 -.-> M0
+    N0 --> M0
+    M0 -.-> N3
+    N0 --> M1
+    N1 -.-> M1
+    N2 -.-> M1
+    N3 -.-> M1
+    M1 -.-> N5
+    N0 -.-> M2
+    N2 --> M2
+    M2 -.-> N4
+    style N0 fill:#F9FBE7,stroke:#DCE775
+    style N1 fill:#F9FBE7,stroke:#DCE775
+    style N2 fill:#F9FBE7,stroke:#DCE775
+    style N3 fill:#D6D9F0,stroke:#9FA9E1
+    style N4 fill:#F5F5DC,stroke:#BCB88A
+    style N5 fill:#D6D9F0,stroke:#9FA9E1
+    style N6 fill:#F9FBE7,stroke:#DCE775
+    style N7 fill:#D6D9F0,stroke:#9FA9E1
+    style S0 fill:#F5F5DC,stroke:#BCB88A
+    style S1 fill:#F9FBE7,stroke:#DCE775
+    style S2 fill:#F9FBE7,stroke:#DCE775
+    style M0 fill:#F5F5DC,stroke:#BCB88A
+    style M1 fill:#D6D9F0,stroke:#9FA9E1
+    style M2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_0 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_1 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_2 fill:#F5F5DC,stroke:#BCB88A
+    style nest0_3 fill:#F9FBE7,stroke:#DCE775
+    style nest1_0 fill:#D6D9F0,stroke:#9FA9E1
+    style nest1_1 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_2 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_3 fill:#F5F5DC,stroke:#BCB88A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#9FA9E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_586.mmd b/train/mermaid/hard/mermaid_586.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e6de1e2dd246023643b392100b0ae503ac431a37
--- /dev/null
+++ b/train/mermaid/hard/mermaid_586.mmd
@@ -0,0 +1,114 @@
+graph RL
+    N0([start])
+    N1([Cable Management])
+    N2(Sensor Integration)
+    N3(Failure Analysis)
+    N4[(Troubleshooting and Debugging)]
+    N5[(Power Management Design)]
+    N6{Reliability Testing}
+    N7[[Schematic Capture]]
+    N8[[Circuit Design]]
+    N9{Low_Power Design}
+    N10[(Enclosure Design)]
+    N11(Reverse Engineering)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Firmware Development
+        nest0_0[ASIC Design]
+        nest0_1(Electromagnetic Compatibility Testing)
+        nest0_2[(Test Fixture Design)]
+    end
+    subgraph FPGA Design
+        nest1_0([Regulatory Compliance])
+        nest1_1[Material Selection]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> |creates schematics| N6
+    N6 --> N7
+    N7 -.-> |designs mechanicals| N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 --> |designs FPGAs| N7
+    nest1_0 --> nest1_1
+    N6 --> nest1_0
+    nest1_1 -.-> N5
+    N5 -.-> S0
+    S0 --> N10
+    S0 --> |selects materials| N9
+    N6 --> S1
+    S1 --> N8
+    S1 -.-> N9
+    S1 -.-> N11
+    S1 --> N10
+    N3 -.-> S2
+    S2 -.-> N6
+    S2 -.-> N5
+    S2 -.-> N7
+    N0 --> M0
+    N1 -.-> M0
+    M0 -.-> N4
+    style N0 fill:#ECF0FD,stroke:#B8C0F5
+    style N1 fill:#E0F2F1,stroke:#26A69A
+    style N2 fill:#ECF0FD,stroke:#B8C0F5
+    style N3 fill:#E0F2F1,stroke:#26A69A
+    style N4 fill:#ECF0FD,stroke:#B8C0F5
+    style N5 fill:#E4E0DF,stroke:#BDAFA8
+    style N6 fill:#E0F2F1,stroke:#26A69A
+    style N7 fill:#ECF0FD,stroke:#B8C0F5
+    style N8 fill:#ECF0FD,stroke:#B8C0F5
+    style N9 fill:#ECF0FD,stroke:#B8C0F5
+    style N10 fill:#E0F2F1,stroke:#26A69A
+    style N11 fill:#ECF0FD,stroke:#B8C0F5
+    style S0 fill:#E0F2F1,stroke:#26A69A
+    style S1 fill:#E4E0DF,stroke:#BDAFA8
+    style S2 fill:#E0F2F1,stroke:#26A69A
+    style M0 fill:#E0F2F1,stroke:#26A69A
+    style nest0_0 fill:#E0F2F1,stroke:#26A69A
+    style nest0_1 fill:#E0F2F1,stroke:#26A69A
+    style nest0_2 fill:#E4E0DF,stroke:#BDAFA8
+    style nest1_0 fill:#E0F2F1,stroke:#26A69A
+    style nest1_1 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#26A69A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_587.mmd b/train/mermaid/hard/mermaid_587.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..bbc0170f95e99f65a164020641d97d91b0782ccf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_587.mmd
@@ -0,0 +1,112 @@
+graph RL
+    N0([start])
+    N1[Failure Analysis]
+    N2[/ASIC Design/]
+    N3[[Cable Management]]
+    N4[[Test Fixture Design]]
+    N5[(Mechanical Design Integration)]
+    N6[Intellectual Property Protection]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Microcontroller Programming
+        nest0_0[/Prototyping/]
+        nest0_1[(Cost Optimization)]
+        nest0_2[[Reverse Engineering]]
+    end
+    subgraph Testing and Validation
+        nest1_0[Signal Integrity Analysis]
+        nest1_1[/Mixed_Signal Design/]
+        nest1_2([Enclosure Design])
+        nest1_3[[PCB Layout]]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    nest0_0 --> nest0_1
+    nest0_1 --> |manages supply chains| nest0_2
+    N5 --> nest0_0
+    nest0_2 --> |designs circuits| N5
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N3 -.-> nest1_0
+    nest1_3 --> N6
+    N2 -.-> S0
+    S0 -.-> N6
+    S0 -.-> |designs for high speed| N5
+    N3 --> S1
+    S1 -.-> N6
+    S1 -.-> |analyzes signals| N5
+    N1 --> S2
+    S2 -.-> N3
+    S2 --> N5
+    S2 --> N4
+    S2 -.-> N6
+    N3 --> M0
+    N2 -.-> M0
+    N1 --> |supervises assembly| M0
+    M0 --> N6
+    N2 --> M2
+    N1 --> M2
+    N0 -.-> M2
+    M2 --> N4
+    style N0 fill:#FCE4EC,stroke:#F06292
+    style N1 fill:#FCE4EC,stroke:#F06292
+    style N2 fill:#D3F7F9,stroke:#80DDEA
+    style N3 fill:#E0F2F1,stroke:#4DB6AC
+    style N4 fill:#E0F2F1,stroke:#4DB6AC
+    style N5 fill:#FCE4EC,stroke:#F06292
+    style N6 fill:#FCE4EC,stroke:#F06292
+    style S0 fill:#E0F2F1,stroke:#4DB6AC
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style S2 fill:#E0F2F1,stroke:#4DB6AC
+    style M0 fill:#D3F7F9,stroke:#80DDEA
+    style M2 fill:#D3F7F9,stroke:#80DDEA
+    style nest0_0 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_1 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_2 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_0 fill:#FCE4EC,stroke:#F06292
+    style nest1_1 fill:#D3F7F9,stroke:#80DDEA
+    style nest1_2 fill:#E0F2F1,stroke:#4DB6AC
+    style nest1_3 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 15 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F06292,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_587.txt b/train/mermaid/hard/mermaid_587.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cfa98a51dc577d8ef89110235657fef9510ed8f7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_587.txt
@@ -0,0 +1,33 @@
+<ASIC Design, connectedTo, Cable Management>
+<ASIC Design, connectedTo, Intellectual Property Protection>
+<ASIC Design, connectedTo, Test Fixture Design>
+<ASIC Design, designs for high speed, Mechanical Design Integration>
+<Cable Management, analyzes signals, Mechanical Design Integration>
+<Cable Management, connectedTo, Intellectual Property Protection>
+<Cable Management, connectedTo, Signal Integrity Analysis>
+<Cable Management, connectedTo, Test Fixture Design>
+<Cost Optimization, manages supply chains, Reverse Engineering>
+<Cost Optimization, partOf, Microcontroller Programming>
+<Enclosure Design, connectedTo, PCB Layout>
+<Enclosure Design, partOf, Testing and Validation>
+<Failure Analysis, connectedTo, ASIC Design>
+<Failure Analysis, connectedTo, Cable Management>
+<Failure Analysis, connectedTo, Intellectual Property Protection>
+<Failure Analysis, connectedTo, Mechanical Design Integration>
+<Failure Analysis, connectedTo, Test Fixture Design>
+<Failure Analysis, supervises assembly, Intellectual Property Protection>
+<Mechanical Design Integration, connectedTo, Intellectual Property Protection>
+<Mechanical Design Integration, connectedTo, Prototyping>
+<Mixed_Signal Design, connectedTo, Enclosure Design>
+<Mixed_Signal Design, partOf, Testing and Validation>
+<PCB Layout, connectedTo, Intellectual Property Protection>
+<PCB Layout, partOf, Testing and Validation>
+<Prototyping, connectedTo, Cost Optimization>
+<Prototyping, partOf, Microcontroller Programming>
+<Reverse Engineering, designs circuits, Mechanical Design Integration>
+<Reverse Engineering, partOf, Microcontroller Programming>
+<Signal Integrity Analysis, connectedTo, Mixed_Signal Design>
+<Signal Integrity Analysis, partOf, Testing and Validation>
+<Test Fixture Design, connectedTo, Mechanical Design Integration>
+<start, connectedTo, Failure Analysis>
+<start, connectedTo, Test Fixture Design>
diff --git a/train/mermaid/hard/mermaid_589.mmd b/train/mermaid/hard/mermaid_589.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c3fb4a2d81f4d50875b9b30525869afe8811098a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_589.mmd
@@ -0,0 +1,124 @@
+graph TD
+    N0([start])
+    N1[(Circuit Design)]
+    N2(Actuator Control)
+    N3(Low_Power Design)
+    N4(Prototyping)
+    N5(Quality Control)
+    N6([High_Speed Digital Design])
+    N7(Mechanical Design Integration)
+    N8{Schematic Capture}
+    N9[/Failure Analysis/]
+    N10[Test Fixture Design]
+    N11(Signal Integrity Analysis)
+    N12[Optical Module Design]
+    N13[/Manufacturing Process Planning/]
+    N14([Component Selection])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Documentation
+        nest0_0[Power Integrity Analysis]
+        nest0_1(Firmware Development)
+        nest0_2[Reliability Testing]
+    end
+    subgraph Assembly Line Optimization
+        nest1_0[Regulatory Compliance]
+        nest1_1([Enclosure Design])
+        nest1_2{ASIC Design}
+        nest1_3{Environmental Testing}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N2 -.-> nest0_0
+    nest0_2 -.-> N9
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> N9
+    N2 -.-> S0
+    S0 --> N4
+    S0 --> N11
+    S0 --> N12
+    N1 -.-> S1
+    S1 --> |creates documentation| N11
+    S1 -.-> N12
+    N0 -.-> M1
+    N3 -.-> M1
+    N4 -.-> M1
+    M1 --> N6
+    style N0 fill:#FCE4EC,stroke:#F06292
+    style N1 fill:#FCE4EC,stroke:#F06292
+    style N2 fill:#F6F6F6,stroke:#CFCFCF
+    style N3 fill:#FCE4EC,stroke:#F06292
+    style N4 fill:#E8F5E9,stroke:#66BB6A
+    style N5 fill:#F6F6F6,stroke:#CFCFCF
+    style N6 fill:#F6F6F6,stroke:#CFCFCF
+    style N7 fill:#F6F6F6,stroke:#CFCFCF
+    style N8 fill:#FCE4EC,stroke:#F06292
+    style N9 fill:#FCE4EC,stroke:#F06292
+    style N10 fill:#E8F5E9,stroke:#66BB6A
+    style N11 fill:#E8F5E9,stroke:#66BB6A
+    style N12 fill:#E8F5E9,stroke:#66BB6A
+    style N13 fill:#FCE4EC,stroke:#F06292
+    style N14 fill:#FCE4EC,stroke:#F06292
+    style S0 fill:#F6F6F6,stroke:#CFCFCF
+    style S1 fill:#F6F6F6,stroke:#CFCFCF
+    style M1 fill:#F6F6F6,stroke:#CFCFCF
+    style nest0_0 fill:#E8F5E9,stroke:#66BB6A
+    style nest0_1 fill:#FCE4EC,stroke:#F06292
+    style nest0_2 fill:#FCE4EC,stroke:#F06292
+    style nest1_0 fill:#E8F5E9,stroke:#66BB6A
+    style nest1_1 fill:#E8F5E9,stroke:#66BB6A
+    style nest1_2 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_3 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F06292,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_59.mmd b/train/mermaid/hard/mermaid_59.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a70f78e2a1f13f236c2d2a939acc468299dd070f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_59.mmd
@@ -0,0 +1,150 @@
+graph TD
+    N0([Estate Planning])
+    N1[Verdict Announcement]
+    N2[Legal Aid Assistance]
+    N3[/Trademark Registration/]
+    N4[Amicus Brief Submission]
+    N5[[Discovery Process]]
+    N6(Plea Bargain)
+    N7[Arbitration Session]
+    N8[Appeal Submission]
+    N9(Pro Bono Work)
+    N10(Witness Testimony)
+    N11[Bail Hearing]
+    N12[/Cross_Examination/]
+    N13[Patent Application]
+    N14(Copyright Infringement)
+    N15([Document Drafting])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Pre_Trial Hearing
+        nest0_0[Due Diligence]
+        nest0_1[/Closing Argument/]
+        nest0_2{Settlement Negotiation}
+        nest0_3([Judgment Writing])
+    end
+    subgraph Case Filing
+        nest1_0[[Contract Review]]
+        nest1_1[(Trial Session)]
+        nest1_2([Sentencing])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> |certifies| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> |represents| N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N7 -.-> nest0_0
+    nest0_3 --> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 --> |educates| nest1_2
+    N8 -.-> nest1_0
+    nest1_2 --> N12
+    N10 --> S0
+    S0 -.-> N14
+    S0 -.-> N13
+    S0 -.-> |investigates| N12
+    N6 -.-> S1
+    S1 --> |licences| N12
+    S1 -.-> N11
+    S1 --> N10
+    S1 --> N13
+    N12 --> S2
+    S2 --> N14
+    S2 --> |rules| N15
+    N0 --> |notarizes| M0
+    N1 -.-> M0
+    M0 --> N3
+    N9 --> M1
+    N11 -.-> M1
+    N5 --> M1
+    N3 -.-> M1
+    M1 --> N13
+    style N0 fill:#E3F2FD,stroke:#64B5F6
+    style N1 fill:#E3F2FD,stroke:#64B5F6
+    style N2 fill:#FFF8E1,stroke:#FFD54F
+    style N3 fill:#E3F2FD,stroke:#64B5F6
+    style N4 fill:#E4E0DF,stroke:#BDAFA8
+    style N5 fill:#FFF8E1,stroke:#FFD54F
+    style N6 fill:#E4E0DF,stroke:#BDAFA8
+    style N7 fill:#E3F2FD,stroke:#64B5F6
+    style N8 fill:#E4E0DF,stroke:#BDAFA8
+    style N9 fill:#E3F2FD,stroke:#64B5F6
+    style N10 fill:#E4E0DF,stroke:#BDAFA8
+    style N11 fill:#E4E0DF,stroke:#BDAFA8
+    style N12 fill:#FFF8E1,stroke:#FFD54F
+    style N13 fill:#FFF8E1,stroke:#FFD54F
+    style N14 fill:#E3F2FD,stroke:#64B5F6
+    style N15 fill:#E4E0DF,stroke:#BDAFA8
+    style S0 fill:#E3F2FD,stroke:#64B5F6
+    style S1 fill:#E4E0DF,stroke:#BDAFA8
+    style S2 fill:#E3F2FD,stroke:#64B5F6
+    style M0 fill:#FFF8E1,stroke:#FFD54F
+    style M1 fill:#E3F2FD,stroke:#64B5F6
+    style nest0_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest0_1 fill:#FFF8E1,stroke:#FFD54F
+    style nest0_2 fill:#E3F2FD,stroke:#64B5F6
+    style nest0_3 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_0 fill:#FFF8E1,stroke:#FFD54F
+    style nest1_1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest1_2 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_593.mmd b/train/mermaid/hard/mermaid_593.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..22e2e45348ee12e5230b57561de7f1055691c004
--- /dev/null
+++ b/train/mermaid/hard/mermaid_593.mmd
@@ -0,0 +1,156 @@
+graph LR
+    N0([Accessibility Features])
+    N1[[API Development]]
+    N2[[Wearable Device Integration]]
+    N3[/Prototyping/]
+    N4[Camera Integration]
+    N5[/Deep Linking/]
+    N6(Database Design for Mobile)
+    N7(Security Implementation)
+    N8[/Testing and Debugging/]
+    N9[User Experience Design]
+    N10[[Subscription Management]]
+    N11[(IoT Device Control via App)]
+    N12[Gamification Elements]
+    N13[[Wireframing]]
+    N14(Biometric Authentication)
+    N15(User Onboarding Flows)
+    N16(Microphone Integration)
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Cross_Platform Development
+        nest0_0[[Geolocation Services]]
+        nest0_1[Widget Development]
+        nest0_2[[Native App Development]]
+    end
+    subgraph User Feedback Collection
+        nest1_0[Offline Mode Development]
+        nest1_1(Backend Integration)
+        nest1_2{User Interface Design}
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 --> |processes payments| N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N10 -.-> nest0_0
+    nest0_2 -.-> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 --> N9
+    N6 --> S0
+    S0 -.-> N11
+    S0 -.-> N14
+    S0 -.-> N10
+    N7 -.-> S1
+    S1 -.-> N9
+    S1 -.-> N13
+    S1 --> N15
+    S1 -.-> N12
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N3
+    N5 --> M1
+    N4 --> M1
+    N8 --> M1
+    M1 --> N10
+    N5 --> M2
+    N7 --> M2
+    N2 --> M2
+    N8 --> M2
+    M2 --> N13
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#E0F2F1,stroke:#26A69A
+    style N2 fill:#C9EFEC,stroke:#6FE1D5
+    style N3 fill:#C9EFEC,stroke:#6FE1D5
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#C9EFEC,stroke:#6FE1D5
+    style N6 fill:#E0F2F1,stroke:#26A69A
+    style N7 fill:#C9EFEC,stroke:#6FE1D5
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#C9EFEC,stroke:#6FE1D5
+    style N10 fill:#C9EFEC,stroke:#6FE1D5
+    style N11 fill:#C9EFEC,stroke:#6FE1D5
+    style N12 fill:#E8F0FF,stroke:#A2D0FF
+    style N13 fill:#E0F2F1,stroke:#26A69A
+    style N14 fill:#E0F2F1,stroke:#26A69A
+    style N15 fill:#E8F0FF,stroke:#A2D0FF
+    style N16 fill:#E8F0FF,stroke:#A2D0FF
+    style N17 fill:#C9EFEC,stroke:#6FE1D5
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#E8F0FF,stroke:#A2D0FF
+    style M0 fill:#E8F0FF,stroke:#A2D0FF
+    style M1 fill:#E8F0FF,stroke:#A2D0FF
+    style M2 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_1 fill:#E0F2F1,stroke:#26A69A
+    style nest0_2 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_0 fill:#E0F2F1,stroke:#26A69A
+    style nest1_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_2 fill:#E8F0FF,stroke:#A2D0FF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_594.mmd b/train/mermaid/hard/mermaid_594.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9a589e056fdbe92482688fa8f18806cab4802b01
--- /dev/null
+++ b/train/mermaid/hard/mermaid_594.mmd
@@ -0,0 +1,88 @@
+graph RL
+    N0([Camera Integration])
+    N1[Subscription Management]
+    N2[/User Onboarding Flows/]
+    N3[(Backend Integration)]
+    N4{User Feedback Collection}
+    N5[(In_App Purchase Integration)]
+    N6[Testing and Debugging]
+    S0(( ))
+    S2(( ))
+    subgraph Native App Development
+        nest0_0[(Chat Functionality)]
+        nest0_1[/AR or VR Features in Mobile/]
+        nest0_2{Cloud Backend for Mobile}
+    end
+    subgraph App Store Optimization
+        nest1_0[Biometric Authentication]
+        nest1_1(IoT Device Control via App)
+        nest1_2[Cross_Platform Development]
+        nest1_3(Widget Development)
+    end
+    N0 --> |uses geolocation| N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> |manages subscriptions| N6
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N4 --> nest0_0
+    nest0_2 --> N6
+    nest1_0 --> |designs UIs| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N3 --> |implements notifications| nest1_0
+    nest1_3 --> N1
+    N3 -.-> S0
+    S0 --> N5
+    S0 --> N6
+    N2 --> S2
+    S2 --> N6
+    S2 -.-> N5
+    S2 --> N4
+    nest0_0 -.-> nest1_1
+    nest1_1 -.-> N3
+    N5 -.-> N1
+    style N0 fill:#E9F7E8,stroke:#6EB76D
+    style N1 fill:#FFDCD6,stroke:#FFB2A5
+    style N2 fill:#E9F7E8,stroke:#6EB76D
+    style N3 fill:#DDCEDD,stroke:#AF56A6
+    style N4 fill:#DDCEDD,stroke:#AF56A6
+    style N5 fill:#DDCEDD,stroke:#AF56A6
+    style N6 fill:#FFDCD6,stroke:#FFB2A5
+    style S0 fill:#DDCEDD,stroke:#AF56A6
+    style S2 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_2 fill:#FFDCD6,stroke:#FFB2A5
+    style nest1_0 fill:#DDCEDD,stroke:#AF56A6
+    style nest1_1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest1_2 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_3 fill:#DDCEDD,stroke:#AF56A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6EB76D,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_594.txt b/train/mermaid/hard/mermaid_594.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b108206604d00f71e997b285c9414cf3fe5496b9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_594.txt
@@ -0,0 +1,30 @@
+<AR or VR Features in Mobile, connectedTo, Cloud Backend for Mobile>
+<AR or VR Features in Mobile, partOf, Native App Development>
+<Backend Integration, connectedTo, In_App Purchase Integration>
+<Backend Integration, connectedTo, Testing and Debugging>
+<Backend Integration, connectedTo, User Feedback Collection>
+<Backend Integration, implements notifications, Biometric Authentication>
+<Biometric Authentication, designs UIs, IoT Device Control via App>
+<Biometric Authentication, partOf, App Store Optimization>
+<Camera Integration, uses geolocation, Subscription Management>
+<Chat Functionality, connectedTo, AR or VR Features in Mobile>
+<Chat Functionality, connectedTo, IoT Device Control via App>
+<Chat Functionality, partOf, Native App Development>
+<Cloud Backend for Mobile, connectedTo, Testing and Debugging>
+<Cloud Backend for Mobile, partOf, Native App Development>
+<Cross_Platform Development, connectedTo, Widget Development>
+<Cross_Platform Development, partOf, App Store Optimization>
+<In_App Purchase Integration, connectedTo, Subscription Management>
+<In_App Purchase Integration, manages subscriptions, Testing and Debugging>
+<IoT Device Control via App, connectedTo, Backend Integration>
+<IoT Device Control via App, connectedTo, Cross_Platform Development>
+<IoT Device Control via App, partOf, App Store Optimization>
+<Subscription Management, connectedTo, User Onboarding Flows>
+<User Feedback Collection, connectedTo, Chat Functionality>
+<User Feedback Collection, connectedTo, In_App Purchase Integration>
+<User Onboarding Flows, connectedTo, Backend Integration>
+<User Onboarding Flows, connectedTo, In_App Purchase Integration>
+<User Onboarding Flows, connectedTo, Testing and Debugging>
+<User Onboarding Flows, connectedTo, User Feedback Collection>
+<Widget Development, connectedTo, Subscription Management>
+<Widget Development, partOf, App Store Optimization>
diff --git a/train/mermaid/hard/mermaid_595.mmd b/train/mermaid/hard/mermaid_595.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ad89e3364090d6625e5fdcc03f2bf1b6da67dd98
--- /dev/null
+++ b/train/mermaid/hard/mermaid_595.mmd
@@ -0,0 +1,106 @@
+graph TD
+    N0([start])
+    N1[Prototyping]
+    N2[Testing and Debugging]
+    N3(Analytics Tracking)
+    N4[/Chat Functionality/]
+    N5[(Accessibility Features)]
+    N6(Microphone Integration)
+    N7[/Performance Optimization/]
+    N8[[Crash Reporting]]
+    N9[Gamification Elements]
+    N10[/Subscription Management/]
+    N11[/User Onboarding Flows/]
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Cross_Platform Development
+        nest0_0[(Payment Gateway Integration)]
+        nest0_1[API Development]
+        nest0_2(In_App Purchase Integration)
+        nest0_3[[Biometric Authentication]]
+    end
+    subgraph App Store Optimization
+        nest1_0[Offline Mode Development]
+        nest1_1[Cloud Backend for Mobile]
+        nest1_2([Geolocation Services])
+        nest1_3{AR or VR Features in Mobile}
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> |yes| N3
+    N3 --> |yes| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N7 -.-> nest0_0
+    nest0_3 -.-> N1
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N7 -.-> nest1_0
+    nest1_3 --> N9
+    N6 --> S1
+    S1 -.-> N8
+    S1 -.-> N10
+    S1 -.-> N9
+    N1 --> S2
+    S2 --> N3
+    S2 -.-> N10
+    S2 --> N4
+    N1 --> M0
+    N0 --> M0
+    N6 -.-> M0
+    M0 --> N11
+    N4 --> M1
+    N0 --> |yes| M1
+    M1 -.-> N6
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style S2 fill:#E8F5E9,stroke:#66BB6A
+    style M0 fill:#FFF9C4,stroke:#FFEB3B
+    style M1 fill:#E8F5E9,stroke:#66BB6A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFEB3B,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_597.txt b/train/mermaid/hard/mermaid_597.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5a6b346ee69a8e2eedec75bf3035c336e3fe01b3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_597.txt
@@ -0,0 +1,28 @@
+<API Development, connectedTo, Backend Integration>
+<API Development, connectedTo, Concept Development>
+<API Development, connectedTo, User Interface Design>
+<API Development, connectedTo, Wireframing>
+<Backend Integration, connectedTo, Deployment to App Stores>
+<Concept Development, connectedTo, Wearable Device Integration>
+<Concept Development, partOf, Gamification Elements>
+<Cross_Platform Development, connectedTo, API Development>
+<Cross_Platform Development, connectedTo, Wireframing>
+<Database Design for Mobile, connectedTo, Security Implementation>
+<Database Design for Mobile, partOf, Analytics Tracking>
+<Deployment to App Stores, connectedTo, In_App Purchase Integration>
+<Deployment to App Stores, connectedTo, Microphone Integration>
+<Deployment to App Stores, connectedTo, Prototyping>
+<In_App Purchase Integration, connectedTo, Microphone Integration>
+<Microphone Integration, connectedTo, Prototyping>
+<Security Implementation, connectedTo, In_App Purchase Integration>
+<Security Implementation, partOf, Analytics Tracking>
+<Updates and Maintenance, connectedTo, Deployment to App Stores>
+<Updates and Maintenance, partOf, Gamification Elements>
+<User Experience Design, connectedTo, Backend Integration>
+<User Experience Design, connectedTo, Database Design for Mobile>
+<User Experience Design, connectedTo, Wireframing>
+<User Interface Design, connectedTo, User Experience Design>
+<User Interface Design, connectedTo, Wireframing>
+<Wearable Device Integration, connectedTo, Updates and Maintenance>
+<Wearable Device Integration, partOf, Gamification Elements>
+<Wireframing, connectedTo, Backend Integration>
diff --git a/train/mermaid/hard/mermaid_60.mmd b/train/mermaid/hard/mermaid_60.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..22c7ae30a8841fb66731ceb16bcffd01b125c827
--- /dev/null
+++ b/train/mermaid/hard/mermaid_60.mmd
@@ -0,0 +1,134 @@
+graph LR
+    N0([start])
+    N1[Plea Bargain]
+    N2(Case Filing)
+    N3(Judgment Writing)
+    N4([Witness Testimony])
+    N5(Child Custody)
+    N6[/Contract Review/]
+    N7[Appeal Submission]
+    N8[[Court Order Execution]]
+    N9(Verdict Announcement)
+    N10([Evidence Collection])
+    N11[Amicus Brief Submission]
+    N12{Cross_Examination}
+    N13(Legal Research)
+    N14([Bankruptcy Filing])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Legal Consultation
+        nest0_0[Notarization]
+        nest0_1{Closing Argument}
+        nest0_2(Due Diligence)
+    end
+    subgraph Client Interview
+        nest1_0{Pro Bono Work}
+        nest1_1[[Discovery Process]]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> |files| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> |defends| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N5 --> nest0_0
+    nest0_2 -.-> N12
+    nest1_0 -.-> nest1_1
+    N8 -.-> nest1_0
+    nest1_1 --> N10
+    N8 --> S0
+    S0 -.-> N13
+    S0 --> N14
+    S0 --> N10
+    N9 -.-> S1
+    S1 --> N11
+    S1 -.-> N13
+    N2 --> S2
+    S2 --> N11
+    S2 -.-> N13
+    S2 -.-> N9
+    N5 -.-> M0
+    N1 -.-> |notarizes| M0
+    N0 --> M0
+    M0 -.-> N10
+    N0 --> |researches| M1
+    N1 -.-> |represents| M1
+    M1 -.-> N13
+    style N0 fill:#F1F8FF,stroke:#42A5F5
+    style N1 fill:#F1F8FF,stroke:#42A5F5
+    style N2 fill:#FFFDE7,stroke:#FBC02D
+    style N3 fill:#FFFDE7,stroke:#FBC02D
+    style N4 fill:#F1F8FF,stroke:#42A5F5
+    style N5 fill:#E0E6E9,stroke:#AABEC6
+    style N6 fill:#F1F8FF,stroke:#42A5F5
+    style N7 fill:#FFFDE7,stroke:#FBC02D
+    style N8 fill:#E0E6E9,stroke:#AABEC6
+    style N9 fill:#FFFDE7,stroke:#FBC02D
+    style N10 fill:#F1F8FF,stroke:#42A5F5
+    style N11 fill:#FFFDE7,stroke:#FBC02D
+    style N12 fill:#E0E6E9,stroke:#AABEC6
+    style N13 fill:#E0E6E9,stroke:#AABEC6
+    style N14 fill:#F1F8FF,stroke:#42A5F5
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#FFFDE7,stroke:#FBC02D
+    style S2 fill:#E0E6E9,stroke:#AABEC6
+    style M0 fill:#F1F8FF,stroke:#42A5F5
+    style M1 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_1 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_2 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_0 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_1 fill:#FFFDE7,stroke:#FBC02D
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FBC02D,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_60.txt b/train/mermaid/hard/mermaid_60.txt
new file mode 100644
index 0000000000000000000000000000000000000000..930927b1a72413c6270b415c2f7d5992a0231af1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_60.txt
@@ -0,0 +1,39 @@
+<Amicus Brief Submission, connectedTo, Cross_Examination>
+<Appeal Submission, connectedTo, Court Order Execution>
+<Case Filing, connectedTo, Amicus Brief Submission>
+<Case Filing, connectedTo, Judgment Writing>
+<Case Filing, connectedTo, Legal Research>
+<Case Filing, connectedTo, Verdict Announcement>
+<Child Custody, connectedTo, Evidence Collection>
+<Child Custody, connectedTo, Notarization>
+<Child Custody, files, Contract Review>
+<Closing Argument, connectedTo, Due Diligence>
+<Closing Argument, partOf, Legal Consultation>
+<Contract Review, connectedTo, Appeal Submission>
+<Court Order Execution, connectedTo, Bankruptcy Filing>
+<Court Order Execution, connectedTo, Evidence Collection>
+<Court Order Execution, connectedTo, Legal Research>
+<Court Order Execution, connectedTo, Pro Bono Work>
+<Court Order Execution, defends, Verdict Announcement>
+<Cross_Examination, connectedTo, Legal Research>
+<Discovery Process, connectedTo, Evidence Collection>
+<Discovery Process, partOf, Client Interview>
+<Due Diligence, connectedTo, Cross_Examination>
+<Due Diligence, partOf, Legal Consultation>
+<Evidence Collection, connectedTo, Amicus Brief Submission>
+<Judgment Writing, connectedTo, Witness Testimony>
+<Legal Research, connectedTo, Bankruptcy Filing>
+<Notarization, connectedTo, Closing Argument>
+<Notarization, partOf, Legal Consultation>
+<Plea Bargain, connectedTo, Case Filing>
+<Plea Bargain, notarizes, Evidence Collection>
+<Plea Bargain, represents, Legal Research>
+<Pro Bono Work, connectedTo, Discovery Process>
+<Pro Bono Work, partOf, Client Interview>
+<Verdict Announcement, connectedTo, Amicus Brief Submission>
+<Verdict Announcement, connectedTo, Evidence Collection>
+<Verdict Announcement, connectedTo, Legal Research>
+<Witness Testimony, connectedTo, Child Custody>
+<start, connectedTo, Evidence Collection>
+<start, connectedTo, Plea Bargain>
+<start, researches, Legal Research>
diff --git a/train/mermaid/hard/mermaid_601.mmd b/train/mermaid/hard/mermaid_601.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3e9d4cf2c00388fdf44e5e6040e09fa817cede8d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_601.mmd
@@ -0,0 +1,102 @@
+graph RL
+    N0([Reels or Short Video Production])
+    N1[Audience Engagement]
+    N2([Scheduling Posts])
+    N3{Community Management}
+    N4[Trend Monitoring]
+    N5[Customer Service on Social Media]
+    N6([Story Format Content Creation])
+    N7(Social Listening)
+    N8(Platform Selection)
+    N9(Campaign Management)
+    N10([Crisis Management])
+    N11[(Brand Voice Development)]
+    N12[(Paid Social Media Advertising)]
+    N13([Ethical Use of Social Media])
+    M0(( ))
+    M2(( ))
+    subgraph Personal Branding on Social Media
+        nest0_0[(Cross_Promotion)]
+        nest0_1[(Social Media Audits)]
+    end
+    subgraph Competitor Analysis
+        nest1_0[/Emerging Platform Exploration/]
+        nest1_1[(Reputation Management)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 --> nest0_1
+    N1 -.-> nest0_0
+    nest0_1 -.-> N13
+    nest1_0 --> nest1_1
+    N11 -.-> nest1_0
+    nest1_1 --> N8
+    N4 -.-> |generates reports| M0
+    N2 --> M0
+    N3 --> M0
+    N1 --> |curates UGC| M0
+    M0 --> N7
+    N6 --> M2
+    N2 --> |forms partnerships| M2
+    M2 -.-> N10
+    N13 -.-> N7
+    style N0 fill:#E8F0EA,stroke:#92C79A
+    style N1 fill:#E8F0EA,stroke:#92C79A
+    style N2 fill:#E8F0EA,stroke:#92C79A
+    style N3 fill:#D6D9F0,stroke:#9FA9E1
+    style N4 fill:#E8F0EA,stroke:#92C79A
+    style N5 fill:#CADEDE,stroke:#94C0C0
+    style N6 fill:#E8F0EA,stroke:#92C79A
+    style N7 fill:#D6D9F0,stroke:#9FA9E1
+    style N8 fill:#CADEDE,stroke:#94C0C0
+    style N9 fill:#D6D9F0,stroke:#9FA9E1
+    style N10 fill:#E8F0EA,stroke:#92C79A
+    style N11 fill:#E8F0EA,stroke:#92C79A
+    style N12 fill:#E8F0EA,stroke:#92C79A
+    style N13 fill:#E8F0EA,stroke:#92C79A
+    style M0 fill:#E8F0EA,stroke:#92C79A
+    style M2 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#E8F0EA,stroke:#92C79A
+    style nest1_0 fill:#E8F0EA,stroke:#92C79A
+    style nest1_1 fill:#E8F0EA,stroke:#92C79A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9FA9E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_603.txt b/train/mermaid/hard/mermaid_603.txt
new file mode 100644
index 0000000000000000000000000000000000000000..66a138df19013c3ab5d81fb243ca464be665ba58
--- /dev/null
+++ b/train/mermaid/hard/mermaid_603.txt
@@ -0,0 +1,40 @@
+<Audience Engagement, connectedTo, Performance Analytics>
+<Brand Voice Development, connectedTo, Campaign Management>
+<Campaign Management, connectedTo, Follower Growth Monitoring>
+<Competitor Analysis, connectedTo, Scheduling Posts>
+<Competitor Analysis, partOf, Reputation Management>
+<Content Creation, connectedTo, Trend Monitoring>
+<Content Creation, partOf, Content Strategy>
+<Content Moderation, connectedTo, User_Generated Content Curation>
+<Cross_Promotion, connectedTo, Ethical Use of Social Media>
+<Emerging Platform Exploration, connectedTo, Personal Branding on Social Media>
+<Emerging Platform Exploration, connectedTo, Reels or Short Video Production>
+<Emerging Platform Exploration, connectedTo, end>
+<Engagement Rate Calculation, connectedTo, Brand Voice Development>
+<Engagement Rate Calculation, connectedTo, Content Creation>
+<Engagement Rate Calculation, connectedTo, Cross_Promotion>
+<Engagement Rate Calculation, connectedTo, Personal Branding on Social Media>
+<Engagement Rate Calculation, connectedTo, Reels or Short Video Production>
+<Engagement Rate Calculation, connectedTo, Social Listening>
+<Engagement Rate Calculation, connectedTo, User_Generated Content Curation>
+<Engagement Rate Calculation, connectedTo, end>
+<Ethical Use of Social Media, builds personal brands, Emerging Platform Exploration>
+<Follower Growth Monitoring, connectedTo, Content Moderation>
+<Live Streaming on Social Media, connectedTo, Emerging Platform Exploration>
+<Live Streaming on Social Media, partOf, Content Strategy>
+<Performance Analytics, develops strategies, Reporting and Optimization>
+<Performance Analytics, grows followers, Brand Voice Development>
+<Personal Branding on Social Media, connectedTo, Reels or Short Video Production>
+<Polls and Quizzes Creation, connectedTo, Competitor Analysis>
+<Polls and Quizzes Creation, partOf, Reputation Management>
+<Reels or Short Video Production, connectedTo, end>
+<Reporting and Optimization, connectedTo, Polls and Quizzes Creation>
+<Reporting and Optimization, partOf, Reputation Management>
+<Scheduling Posts, connectedTo, Engagement Rate Calculation>
+<Scheduling Posts, connectedTo, end>
+<Social Listening, connectedTo, Audience Engagement>
+<Social Listening, connectedTo, end>
+<Trend Monitoring, connectedTo, Live Streaming on Social Media>
+<Trend Monitoring, partOf, Content Strategy>
+<User_Generated Content Curation, connectedTo, Cross_Promotion>
+<start, connectedTo, Scheduling Posts>
diff --git a/train/mermaid/hard/mermaid_605.mmd b/train/mermaid/hard/mermaid_605.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..49f3f35f0df65f90511e077196bde349ddf48bda
--- /dev/null
+++ b/train/mermaid/hard/mermaid_605.mmd
@@ -0,0 +1,130 @@
+graph BT
+    N0([Influencer Collaboration])
+    N1[Social Selling]
+    N2{User_Generated Content Curation}
+    N3{Reach and Impressions Tracking}
+    N4[/Reels or Short Video Production/]
+    N5[Hashtag Research]
+    N6{Live Streaming on Social Media}
+    N7[Competitor Analysis]
+    N8([Scheduling Posts])
+    N9[/Social Media Audits/]
+    N10[(Story Format Content Creation)]
+    N11[Group Management]
+    N12[/Reputation Management/]
+    N13[[Reporting and Optimization]]
+    N14([Content Creation])
+    N15[Platform Selection]
+    N16([Crisis Communication Plan])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Crisis Management
+        nest0_0[/Platform Algorithm Understanding/]
+        nest0_1(Personal Branding on Social Media)
+    end
+    subgraph Customer Service on Social Media
+        nest1_0(Follower Growth Monitoring)
+        nest1_1[Social Listening]
+        nest1_2[Brand Voice Development]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> |creates content| N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> |conducts social audits| N6
+    N6 -.-> |develops strategies| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> |explores new features| N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    N10 --> nest0_0
+    nest0_1 --> |understands algorithms| N15
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N14 -.-> nest1_0
+    nest1_2 -.-> N7
+    N4 -.-> S0
+    S0 --> N16
+    S0 -.-> N15
+    S0 --> N7
+    N3 --> S1
+    S1 -.-> N15
+    S1 --> N8
+    N1 --> M0
+    N3 --> M0
+    M0 --> N5
+    N0 -.-> M1
+    N7 --> M1
+    M1 -.-> N9
+    style N0 fill:#FCFCE7,stroke:#DCE775
+    style N1 fill:#E8F0EA,stroke:#92C79A
+    style N2 fill:#FCFCE7,stroke:#DCE775
+    style N3 fill:#FCFCE7,stroke:#DCE775
+    style N4 fill:#FCFCE7,stroke:#DCE775
+    style N5 fill:#E8F0EA,stroke:#92C79A
+    style N6 fill:#E8F0EA,stroke:#92C79A
+    style N7 fill:#E8F0EA,stroke:#92C79A
+    style N8 fill:#FFFDE0,stroke:#FFF8A6
+    style N9 fill:#FFFDE0,stroke:#FFF8A6
+    style N10 fill:#FCFCE7,stroke:#DCE775
+    style N11 fill:#FCFCE7,stroke:#DCE775
+    style N12 fill:#E8F0EA,stroke:#92C79A
+    style N13 fill:#FCFCE7,stroke:#DCE775
+    style N14 fill:#E8F0EA,stroke:#92C79A
+    style N15 fill:#FFFDE0,stroke:#FFF8A6
+    style N16 fill:#E8F0EA,stroke:#92C79A
+    style S0 fill:#FFFDE0,stroke:#FFF8A6
+    style S1 fill:#E8F0EA,stroke:#92C79A
+    style M0 fill:#FFFDE0,stroke:#FFF8A6
+    style M1 fill:#FCFCE7,stroke:#DCE775
+    style nest0_0 fill:#E8F0EA,stroke:#92C79A
+    style nest0_1 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_0 fill:#E8F0EA,stroke:#92C79A
+    style nest1_1 fill:#E8F0EA,stroke:#92C79A
+    style nest1_2 fill:#FCFCE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#92C79A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_606.mmd b/train/mermaid/hard/mermaid_606.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..29f793bdcbdcdef88a13df5a3f39aaca36461ea1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_606.mmd
@@ -0,0 +1,134 @@
+graph BT
+    N0([Emerging Platform Exploration])
+    N1{Reputation Management}
+    N2[Campaign Management]
+    N3(Competitor Analysis)
+    N4[Cross_Promotion]
+    N5[User_Generated Content Curation]
+    N6(Trend Monitoring)
+    N7[(Performance Analytics)]
+    N8[(Crisis Management)]
+    N9(Story Format Content Creation)
+    N10[Content Strategy]
+    N11[(Reporting and Optimization)]
+    N12[Reach and Impressions Tracking]
+    N13[(Engagement Rate Calculation)]
+    N14[Partnership Management on Social]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Social Selling
+        nest0_0(Ethical Use of Social Media)
+        nest0_1{Brand Voice Development}
+        nest0_2([Link_in_Bio Optimization])
+    end
+    subgraph Content Moderation
+        nest1_0(Crisis Communication Plan)
+        nest1_1[[Reels or Short Video Production]]
+    end
+    N0 -.-> N1
+    N1 --> |runs ads| N2
+    N2 -.-> N3
+    N3 --> |builds reputation| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> |grows followers| N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> |creates stories| N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N7 -.-> nest0_0
+    nest0_2 -.-> N4
+    nest1_0 -.-> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 --> N6
+    N1 -.-> S0
+    S0 -.-> N11
+    S0 -.-> N3
+    S0 -.-> N12
+    S0 -.-> N6
+    N9 --> S1
+    S1 -.-> N11
+    S1 --> N15
+    S1 -.-> N13
+    N12 --> S2
+    S2 -.-> N14
+    S2 --> N15
+    N2 --> |analyzes engagement| M0
+    N3 -.-> M0
+    N5 -.-> M0
+    N7 --> M0
+    M0 -.-> N9
+    style N0 fill:#B3E5FC,stroke:#03A9F4
+    style N1 fill:#F8FDD3,stroke:#D3EB9F
+    style N2 fill:#F8FDD3,stroke:#D3EB9F
+    style N3 fill:#B3E5FC,stroke:#03A9F4
+    style N4 fill:#F8FDD3,stroke:#D3EB9F
+    style N5 fill:#B3E5FC,stroke:#03A9F4
+    style N6 fill:#FFF9C4,stroke:#FFEB3B
+    style N7 fill:#F8FDD3,stroke:#D3EB9F
+    style N8 fill:#B3E5FC,stroke:#03A9F4
+    style N9 fill:#FFF9C4,stroke:#FFEB3B
+    style N10 fill:#FFF9C4,stroke:#FFEB3B
+    style N11 fill:#B3E5FC,stroke:#03A9F4
+    style N12 fill:#F8FDD3,stroke:#D3EB9F
+    style N13 fill:#FFF9C4,stroke:#FFEB3B
+    style N14 fill:#B3E5FC,stroke:#03A9F4
+    style N15 fill:#FFF9C4,stroke:#FFEB3B
+    style S0 fill:#FFF9C4,stroke:#FFEB3B
+    style S1 fill:#F8FDD3,stroke:#D3EB9F
+    style S2 fill:#FFF9C4,stroke:#FFEB3B
+    style M0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_1 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_2 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest1_1 fill:#FFF9C4,stroke:#FFEB3B
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#03A9F4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_607.txt b/train/mermaid/hard/mermaid_607.txt
new file mode 100644
index 0000000000000000000000000000000000000000..35fedd13a5d004b33908763e4abf295316285792
--- /dev/null
+++ b/train/mermaid/hard/mermaid_607.txt
@@ -0,0 +1,30 @@
+<Community Management, connectedTo, User_Generated Content Curation>
+<Content Strategy, connectedTo, Emerging Platform Exploration>
+<Customer Service on Social Media, connectedTo, Group Management>
+<Emerging Platform Exploration, connectedTo, Community Management>
+<Emerging Platform Exploration, connectedTo, User_Generated Content Curation>
+<Ethical Use of Social Media, connectedTo, Content Strategy>
+<Ethical Use of Social Media, connectedTo, Emerging Platform Exploration>
+<Ethical Use of Social Media, connectedTo, User_Generated Content Curation>
+<Group Management, connectedTo, Link_in_Bio Optimization>
+<Link_in_Bio Optimization, connectedTo, Personal Branding on Social Media>
+<Link_in_Bio Optimization, connectedTo, Reputation Management>
+<Partnership Management on Social, connectedTo, Polls and Quizzes Creation>
+<Partnership Management on Social, partOf, Influencer Collaboration>
+<Platform Algorithm Understanding, connectedTo, Partnership Management on Social>
+<Platform Algorithm Understanding, partOf, Influencer Collaboration>
+<Polls and Quizzes Creation, connectedTo, Ethical Use of Social Media>
+<Polls and Quizzes Creation, connectedTo, Platform Algorithm Understanding>
+<Polls and Quizzes Creation, connectedTo, User_Generated Content Curation>
+<Polls and Quizzes Creation, measures reach, Emerging Platform Exploration>
+<Reputation Management, connectedTo, Social Media Audits>
+<Reputation Management, partOf, Paid Social Media Advertising>
+<Social Media Audits, connectedTo, Customer Service on Social Media>
+<Social Media Audits, partOf, Paid Social Media Advertising>
+<Trend Monitoring, connectedTo, Emerging Platform Exploration>
+<Trend Monitoring, connectedTo, Polls and Quizzes Creation>
+<Trend Monitoring, connectedTo, User_Generated Content Curation>
+<User_Generated Content Curation, connectedTo, Customer Service on Social Media>
+<User_Generated Content Curation, connectedTo, Link_in_Bio Optimization>
+<User_Generated Content Curation, connectedTo, Personal Branding on Social Media>
+<start, connectedTo, Trend Monitoring>
diff --git a/train/mermaid/hard/mermaid_609.mmd b/train/mermaid/hard/mermaid_609.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9a66c44bdaaaea5403451bb26032644591d271ed
--- /dev/null
+++ b/train/mermaid/hard/mermaid_609.mmd
@@ -0,0 +1,148 @@
+graph BT
+    N0([start])
+    N1[[Google Analytics Integration]]
+    N2([Search Result Display])
+    N3([Site Architecture Optimization])
+    N4[/Technical SEO/]
+    N5[Keyword Research]
+    N6(Indexing Content)
+    N7[/Video Search/]
+    N8(Negative SEO Prevention)
+    N9[[Off_Page SEO]]
+    N10[Penalties Recovery]
+    N11[Schema Markup Implementation]
+    N12(Personalized Search Results)
+    N13([Content Quality Assessment])
+    N14[(Crawling Websites)]
+    N15[News Search]
+    N16([Search Engine Optimization])
+    N17([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph On_Page SEO
+        nest0_0[[Image Search]]
+        nest0_1[Semantic Search]
+        nest0_2{Ranking Algorithms}
+        nest0_3[[Shopping Search]]
+    end
+    subgraph Algorithm Updates Monitoring
+        nest1_0[(Competitor Keyword Analysis)]
+        nest1_1{Google My Business Management}
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> |crawls websites| N15
+    N15 --> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> |generates featured snippets| nest0_3
+    N12 --> nest0_0
+    nest0_3 -.-> N5
+    nest1_0 --> nest1_1
+    N12 --> nest1_0
+    nest1_1 --> N14
+    N3 --> S0
+    S0 --> N12
+    S0 -.-> N9
+    S0 --> N10
+    N0 --> S1
+    S1 --> N5
+    S1 -.-> N13
+    S1 -.-> N3
+    N12 --> S2
+    S2 -.-> |manages international SEO| N14
+    S2 -.-> N15
+    N3 --> M0
+    N1 -.-> |manages PPC| M0
+    M0 --> N10
+    N3 -.-> M1
+    N9 --> |interprets analytics| M1
+    M1 -.-> N11
+    style N0 fill:#F8BBD0,stroke:#E91E63
+    style N1 fill:#E0F2F1,stroke:#4DB6AC
+    style N2 fill:#E0F2F1,stroke:#4DB6AC
+    style N3 fill:#F8BBD0,stroke:#E91E63
+    style N4 fill:#F8BBD0,stroke:#E91E63
+    style N5 fill:#E0F2F1,stroke:#4DB6AC
+    style N6 fill:#F8BBD0,stroke:#E91E63
+    style N7 fill:#E8EAF6,stroke:#7986CB
+    style N8 fill:#F8BBD0,stroke:#E91E63
+    style N9 fill:#E0F2F1,stroke:#4DB6AC
+    style N10 fill:#E0F2F1,stroke:#4DB6AC
+    style N11 fill:#F8BBD0,stroke:#E91E63
+    style N12 fill:#E8EAF6,stroke:#7986CB
+    style N13 fill:#E8EAF6,stroke:#7986CB
+    style N14 fill:#F8BBD0,stroke:#E91E63
+    style N15 fill:#E8EAF6,stroke:#7986CB
+    style N16 fill:#E8EAF6,stroke:#7986CB
+    style N17 fill:#F8BBD0,stroke:#E91E63
+    style S0 fill:#F8BBD0,stroke:#E91E63
+    style S1 fill:#F8BBD0,stroke:#E91E63
+    style S2 fill:#E0F2F1,stroke:#4DB6AC
+    style M0 fill:#E0F2F1,stroke:#4DB6AC
+    style M1 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_0 fill:#F8BBD0,stroke:#E91E63
+    style nest0_1 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_2 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_3 fill:#E0F2F1,stroke:#4DB6AC
+    style nest1_0 fill:#F8BBD0,stroke:#E91E63
+    style nest1_1 fill:#F8BBD0,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_609.txt b/train/mermaid/hard/mermaid_609.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5baf60747953e798f697fe024c9712ac3de32f46
--- /dev/null
+++ b/train/mermaid/hard/mermaid_609.txt
@@ -0,0 +1,42 @@
+<Competitor Keyword Analysis, connectedTo, Google My Business Management>
+<Competitor Keyword Analysis, partOf, Algorithm Updates Monitoring>
+<Content Quality Assessment, connectedTo, Crawling Websites>
+<Crawling Websites, crawls websites, News Search>
+<Google Analytics Integration, connectedTo, Search Result Display>
+<Google Analytics Integration, manages PPC, Penalties Recovery>
+<Google My Business Management, connectedTo, Crawling Websites>
+<Google My Business Management, partOf, Algorithm Updates Monitoring>
+<Image Search, connectedTo, Semantic Search>
+<Image Search, partOf, On_Page SEO>
+<Indexing Content, connectedTo, Video Search>
+<Keyword Research, connectedTo, Indexing Content>
+<Negative SEO Prevention, connectedTo, Off_Page SEO>
+<News Search, connectedTo, Search Engine Optimization>
+<Off_Page SEO, connectedTo, Penalties Recovery>
+<Off_Page SEO, interprets analytics, Schema Markup Implementation>
+<Penalties Recovery, connectedTo, Schema Markup Implementation>
+<Personalized Search Results, connectedTo, Competitor Keyword Analysis>
+<Personalized Search Results, connectedTo, Content Quality Assessment>
+<Personalized Search Results, connectedTo, Image Search>
+<Personalized Search Results, connectedTo, News Search>
+<Personalized Search Results, manages international SEO, Crawling Websites>
+<Ranking Algorithms, generates featured snippets, Shopping Search>
+<Ranking Algorithms, partOf, On_Page SEO>
+<Schema Markup Implementation, connectedTo, Personalized Search Results>
+<Search Engine Optimization, connectedTo, end>
+<Search Result Display, connectedTo, Site Architecture Optimization>
+<Semantic Search, connectedTo, Ranking Algorithms>
+<Semantic Search, partOf, On_Page SEO>
+<Shopping Search, connectedTo, Keyword Research>
+<Shopping Search, partOf, On_Page SEO>
+<Site Architecture Optimization, connectedTo, Off_Page SEO>
+<Site Architecture Optimization, connectedTo, Penalties Recovery>
+<Site Architecture Optimization, connectedTo, Personalized Search Results>
+<Site Architecture Optimization, connectedTo, Schema Markup Implementation>
+<Site Architecture Optimization, connectedTo, Technical SEO>
+<Technical SEO, connectedTo, Keyword Research>
+<Video Search, connectedTo, Negative SEO Prevention>
+<start, connectedTo, Content Quality Assessment>
+<start, connectedTo, Google Analytics Integration>
+<start, connectedTo, Keyword Research>
+<start, connectedTo, Site Architecture Optimization>
diff --git a/train/mermaid/hard/mermaid_610.mmd b/train/mermaid/hard/mermaid_610.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..76e2b983c09d2827894a2b6327d07b1aabcb8d05
--- /dev/null
+++ b/train/mermaid/hard/mermaid_610.mmd
@@ -0,0 +1,110 @@
+graph RL
+    N0([Personalized Search Results])
+    N1([Paid Search Advertising])
+    N2[[Search Console Management]]
+    N3[News Search]
+    N4[(Crawling Websites)]
+    N5(Schema Markup Implementation)
+    N6(Search Engine Optimization)
+    N7[Rank Tracking]
+    N8[[Google Analytics Integration]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Search Result Display
+        nest0_0(Query Processing)
+        nest0_1(Negative SEO Prevention)
+        nest0_2[/Technical SEO/]
+        nest0_3[[User Intent Understanding]]
+    end
+    subgraph Indexing Content
+        nest1_0[Core Web Vitals Optimization]
+        nest1_1[[Knowledge Graph Integration]]
+        nest1_2[/Video Search/]
+        nest1_3[[Algorithm Updates Monitoring]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> |optimizes keywords| N8
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N3 --> nest0_0
+    nest0_3 --> |uses search console| N5
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N3 -.-> nest1_0
+    nest1_3 --> N6
+    N2 --> S0
+    S0 --> N8
+    S0 -.-> N5
+    N4 --> S1
+    S1 --> N6
+    S1 --> N8
+    S1 --> |monitors rankings| N7
+    N0 --> S2
+    S2 --> N8
+    S2 --> N5
+    N1 -.-> M0
+    N0 --> M0
+    M0 --> N3
+    style N0 fill:#D7CCC8,stroke:#795548
+    style N1 fill:#D7CCC8,stroke:#795548
+    style N2 fill:#F1F8FF,stroke:#42A5F5
+    style N3 fill:#D7CCC8,stroke:#795548
+    style N4 fill:#F1F8FF,stroke:#42A5F5
+    style N5 fill:#F1F8FF,stroke:#42A5F5
+    style N6 fill:#FFCCBC,stroke:#FF5722
+    style N7 fill:#D7CCC8,stroke:#795548
+    style N8 fill:#F1F8FF,stroke:#42A5F5
+    style S0 fill:#D7CCC8,stroke:#795548
+    style S1 fill:#FFCCBC,stroke:#FF5722
+    style S2 fill:#F1F8FF,stroke:#42A5F5
+    style M0 fill:#D7CCC8,stroke:#795548
+    style nest0_0 fill:#FFCCBC,stroke:#FF5722
+    style nest0_1 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_2 fill:#FFCCBC,stroke:#FF5722
+    style nest0_3 fill:#FFCCBC,stroke:#FF5722
+    style nest1_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest1_1 fill:#D7CCC8,stroke:#795548
+    style nest1_2 fill:#D7CCC8,stroke:#795548
+    style nest1_3 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FF5722,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF5722,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_612.mmd b/train/mermaid/hard/mermaid_612.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..29e5df19023e526cf9ba4c5a98c988c4f807617b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_612.mmd
@@ -0,0 +1,134 @@
+graph RL
+    N0([start])
+    N1[/Core Web Vitals Optimization/]
+    N2[/Search Engine Optimization/]
+    N3([Keyword Research])
+    N4[(Shopping Search)]
+    N5([Video Search])
+    N6[Search Engine Marketing Strategy]
+    N7[(Off_Page SEO)]
+    N8(Knowledge Graph Integration)
+    N9[/Technical SEO/]
+    N10[[Search Result Display]]
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Featured Snippets Optimization
+        nest0_0[[International SEO]]
+        nest0_1[/Ranking Algorithms/]
+        nest0_2([Image Search])
+        nest0_3[Google My Business Management]
+    end
+    subgraph Google Analytics Integration
+        nest1_0(Penalties Recovery)
+        nest1_1[[Local SEO]]
+        nest1_2[Competitor Keyword Analysis]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> |indexes news| nest0_3
+    N6 -.-> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N2 -.-> nest1_0
+    nest1_2 --> N3
+    N5 --> S0
+    S0 --> N7
+    S0 --> N9
+    N2 --> S2
+    S2 -.-> N9
+    S2 -.-> N5
+    S2 --> N4
+    S2 --> N7
+    N2 -.-> M0
+    N0 -.-> M0
+    N4 -.-> M0
+    N3 --> M0
+    M0 -.-> N6
+    N1 -.-> M1
+    N3 -.-> |detects spam| M1
+    N0 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N5
+    N2 -.-> M2
+    N1 -.-> M2
+    N0 -.-> M2
+    M2 -.-> N4
+    style N0 fill:#DED7F0,stroke:#A188DB
+    style N1 fill:#E8F0FF,stroke:#A2D0FF
+    style N2 fill:#E8F0FF,stroke:#A2D0FF
+    style N3 fill:#DED7F0,stroke:#A188DB
+    style N4 fill:#E9F7E8,stroke:#6EB76D
+    style N5 fill:#E8F0FF,stroke:#A2D0FF
+    style N6 fill:#E8F0FF,stroke:#A2D0FF
+    style N7 fill:#E9F7E8,stroke:#6EB76D
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#DED7F0,stroke:#A188DB
+    style N10 fill:#E9F7E8,stroke:#6EB76D
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S2 fill:#E8F0FF,stroke:#A2D0FF
+    style M0 fill:#DED7F0,stroke:#A188DB
+    style M1 fill:#DED7F0,stroke:#A188DB
+    style M2 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_1 fill:#DED7F0,stroke:#A188DB
+    style nest0_2 fill:#DED7F0,stroke:#A188DB
+    style nest0_3 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_0 fill:#DED7F0,stroke:#A188DB
+    style nest1_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_2 fill:#E8F0FF,stroke:#A2D0FF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#A2D0FF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_613.txt b/train/mermaid/hard/mermaid_613.txt
new file mode 100644
index 0000000000000000000000000000000000000000..049b5bac940537259bfddd869f365da5a26f77a5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_613.txt
@@ -0,0 +1,32 @@
+<Academic Search, connectedTo, Video Search>
+<Featured Snippets Optimization, connectedTo, Knowledge Graph Integration>
+<Featured Snippets Optimization, partOf, Core Web Vitals Optimization>
+<Google Analytics Integration, connectedTo, Academic Search>
+<Google Analytics Integration, connectedTo, Google My Business Management>
+<Google Analytics Integration, connectedTo, Shopping Search>
+<Google Analytics Integration, connectedTo, Video Search>
+<Google Analytics Integration, connectedTo, Voice Search Optimization>
+<Google My Business Management, connectedTo, Search Console Management>
+<Google My Business Management, connectedTo, Video Search>
+<Google My Business Management, connectedTo, Voice Search Optimization>
+<Indexing Content, connectedTo, Semantic Search>
+<Knowledge Graph Integration, connectedTo, Academic Search>
+<Knowledge Graph Integration, connectedTo, Video Search>
+<Local SEO, connectedTo, Featured Snippets Optimization>
+<Local SEO, partOf, Core Web Vitals Optimization>
+<Mobile_First Indexing, connectedTo, Local SEO>
+<Mobile_First Indexing, connectedTo, Query Processing>
+<Mobile_First Indexing, connectedTo, Video Search>
+<News Search, connectedTo, Schema Markup Implementation>
+<News Search, partOf, Rank Tracking>
+<Paid Search Advertising, connectedTo, Google Analytics Integration>
+<Query Processing, connectedTo, Knowledge Graph Integration>
+<Schema Markup Implementation, connectedTo, Shopping Search>
+<Schema Markup Implementation, partOf, Rank Tracking>
+<Search Console Management, connectedTo, News Search>
+<Search Console Management, partOf, Rank Tracking>
+<Shopping Search, connectedTo, Google My Business Management>
+<Shopping Search, connectedTo, Voice Search Optimization>
+<Video Search, connectedTo, Indexing Content>
+<Voice Search Optimization, connectedTo, Mobile_First Indexing>
+<Voice Search Optimization, connectedTo, Video Search>
diff --git a/train/mermaid/hard/mermaid_616.txt b/train/mermaid/hard/mermaid_616.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8d5a49fcaad34a8efaaec18a21b432f8e94cb1df
--- /dev/null
+++ b/train/mermaid/hard/mermaid_616.txt
@@ -0,0 +1,31 @@
+<Click_Through Rate Optimization, connectedTo, Negative SEO Prevention>
+<Core Web Vitals Optimization, connectedTo, Click_Through Rate Optimization>
+<Core Web Vitals Optimization, connectedTo, Negative SEO Prevention>
+<Core Web Vitals Optimization, connectedTo, start>
+<Core Web Vitals Optimization, creates content, On_Page SEO>
+<Featured Snippets Optimization, connectedTo, Google Analytics Integration>
+<Featured Snippets Optimization, partOf, Technical SEO>
+<Google Analytics Integration, connectedTo, Search Console Management>
+<Google Analytics Integration, partOf, Technical SEO>
+<On_Page SEO, connectedTo, Click_Through Rate Optimization>
+<On_Page SEO, handles voice search, Penalties Recovery>
+<Penalties Recovery, optimizes off_page, Search Engine Marketing Strategy>
+<Penalties Recovery, partOf, Crawling Websites>
+<Personalized Search Results, connectedTo, Schema Markup Implementation>
+<Ranking Algorithms, connectedTo, Click_Through Rate Optimization>
+<Ranking Algorithms, connectedTo, Negative SEO Prevention>
+<Ranking Algorithms, connectedTo, On_Page SEO>
+<Ranking Algorithms, connectedTo, Personalized Search Results>
+<Ranking Algorithms, connectedTo, Voice Search Optimization>
+<Schema Markup Implementation, connectedTo, Core Web Vitals Optimization>
+<Schema Markup Implementation, connectedTo, Semantic Search>
+<Search Console Management, connectedTo, On_Page SEO>
+<Search Console Management, partOf, Technical SEO>
+<Search Engine Marketing Strategy, connectedTo, User Experience for Search>
+<Search Engine Marketing Strategy, partOf, Crawling Websites>
+<Semantic Search, connectedTo, Featured Snippets Optimization>
+<Semantic Search, partOf, Technical SEO>
+<User Experience for Search, optimizes for mobile, Schema Markup Implementation>
+<User Experience for Search, partOf, Crawling Websites>
+<Voice Search Optimization, connectedTo, Personalized Search Results>
+<start, connectedTo, Ranking Algorithms>
diff --git a/train/mermaid/hard/mermaid_617.mmd b/train/mermaid/hard/mermaid_617.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..19beb291de4941abdc4bf7e4afcf9f0852fe373b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_617.mmd
@@ -0,0 +1,108 @@
+graph LR
+    N0([start])
+    N1[/Compliance with Data Protection Regulations/]
+    N2(Credential Management)
+    N3[(User Registration)]
+    N4[[Digital Certificates]]
+    N5([Privacy Management])
+    N6([Identity as a Service])
+    N7[[Non_Repudiation]]
+    N8{Portable Identities}
+    N9(Risk_Based Authentication)
+    N10(Multi_Factor Authentication)
+    N11{Biometric Authentication}
+    N12[/Workforce Identity Management/]
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Decentralized Identifiers
+        nest0_0[(Identity Verification)]
+        nest0_1([Data Encryption for Identity])
+    end
+    subgraph Data Minimization Principles
+        nest1_0{Customer Identity and Access Management}
+        nest1_1([Digital Wallets for Identity])
+        nest1_2{Identity Proofing}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> |yes| N9
+    N9 -.-> |yes| N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    N5 -.-> nest0_0
+    nest0_1 -.-> N6
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 --> |yes| N2
+    N9 --> S0
+    S0 --> N11
+    S0 -.-> N12
+    N8 --> S2
+    S2 -.-> N12
+    S2 -.-> N10
+    N2 --> M0
+    N0 -.-> M0
+    M0 --> N4
+    N1 -.-> M1
+    N4 --> M1
+    N6 -.-> M1
+    M1 --> N8
+    N7 --> M2
+    N5 -.-> M2
+    N6 --> M2
+    N8 -.-> |yes| M2
+    M2 -.-> N11
+    style S0 fill:#D3F7F9,stroke:#80DDEA
+    style S2 fill:#F9FBE7,stroke:#DCE775
+    style M0 fill:#F9FBE7,stroke:#DCE775
+    style M1 fill:#C9EFEC,stroke:#6FE1D5
+    style M2 fill:#F9FBE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#6FE1D5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_619.mmd b/train/mermaid/hard/mermaid_619.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..08b7eecad7c0c0074a2df411b2e23a0a661319c6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_619.mmd
@@ -0,0 +1,125 @@
+graph RL
+    N0([start])
+    N1[[Digital Certificates]]
+    N2{Decentralized Identifiers}
+    N3([Workforce Identity Management])
+    N4[(Verifiable Credentials)]
+    N5(Privacy Management)
+    N6(Identity Verification)
+    N7[(Identity Threat Detection and Response)]
+    N8([Federated Identity Management])
+    N9[/Non_Repudiation/]
+    N10[/Identity as a Service/]
+    N11[/Multi_Factor Authentication/]
+    N12(Risk_Based Authentication)
+    N13[[KYC Integration]]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Attribute Management
+        nest0_0[Single Sign_On]
+        nest0_1[Data Minimization Principles]
+        nest0_2[Identity Proofing]
+        nest0_3{Blockchain_based Identity}
+    end
+    subgraph Adaptive Authentication
+        nest1_0[[User Provisioning]]
+        nest1_1(Portable Identities)
+    end
+    N0 --> |yes| N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N6 -.-> nest0_0
+    nest0_3 --> N11
+    nest1_0 --> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 -.-> |no| N5
+    N9 -.-> S0
+    S0 --> N11
+    S0 -.-> N12
+    N11 -.-> S1
+    S1 --> N13
+    S1 -.-> N14
+    N11 --> S2
+    S2 -.-> |no| N14
+    S2 -.-> N13
+    N2 --> M0
+    N4 --> M0
+    N3 --> |no| M0
+    M0 --> N8
+    N3 --> M1
+    N0 -.-> M1
+    N2 -.-> |no| M1
+    M1 --> N6
+    N2 --> M2
+    N1 -.-> |yes| M2
+    N5 -.-> M2
+    M2 -.-> N13
+    style S0 fill:#D3F7F9,stroke:#80DDEA
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style S2 fill:#D3F7F9,stroke:#80DDEA
+    style M0 fill:#EFEBE9,stroke:#A1887F
+    style M1 fill:#E0F7FA,stroke:#00BCD4
+    style M2 fill:#D3F7F9,stroke:#80DDEA
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#80DDEA,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_62.txt b/train/mermaid/hard/mermaid_62.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0416367791b27c5dc47998335db12514ba39fe8f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_62.txt
@@ -0,0 +1,34 @@
+<Arbitration Session, connectedTo, Discovery Process>
+<Bankruptcy Filing, connectedTo, Verdict Announcement>
+<Bankruptcy Filing, partOf, Bail Hearing>
+<Client Interview, connectedTo, Immigration Petition>
+<Client Interview, connectedTo, Legal Aid Assistance>
+<Client Interview, connectedTo, Verdict Announcement>
+<Copyright Infringement, connectedTo, Pro Bono Work>
+<Copyright Infringement, partOf, Case Filing>
+<Court Order Execution, connectedTo, end>
+<Discovery Process, connectedTo, Copyright Infringement>
+<Discovery Process, connectedTo, Legal Aid Assistance>
+<Enforcement, connectedTo, Plea Bargain>
+<Evidence Collection, connectedTo, Regulatory Compliance Review>
+<Immigration Petition, connectedTo, Settlement Negotiation>
+<Immigration Petition, partOf, Bail Hearing>
+<Intel Property Licensing, connectedTo, Client Interview>
+<Intel Property Licensing, no, Court Order Execution>
+<Jury Selection, connectedTo, Intel Property Licensing>
+<Legal Aid Assistance, connectedTo, Court Order Execution>
+<Plea Bargain, connectedTo, Client Interview>
+<Plea Bargain, connectedTo, Evidence Collection>
+<Plea Bargain, connectedTo, Regulatory Compliance Review>
+<Plea Bargain, connectedTo, end>
+<Pro Bono Work, connectedTo, Enforcement>
+<Pro Bono Work, partOf, Case Filing>
+<Regulatory Compliance Review, connectedTo, Jury Selection>
+<Settlement Negotiation, no, Bankruptcy Filing>
+<Settlement Negotiation, partOf, Bail Hearing>
+<Trial Session, connectedTo, Enforcement>
+<Trial Session, connectedTo, Plea Bargain>
+<Verdict Announcement, connectedTo, Arbitration Session>
+<Verdict Announcement, connectedTo, Court Order Execution>
+<start, connectedTo, Plea Bargain>
+<start, connectedTo, Trial Session>
diff --git a/train/mermaid/hard/mermaid_620.mmd b/train/mermaid/hard/mermaid_620.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..750c968a91249da551fc6a4df0bde1214deb6613
--- /dev/null
+++ b/train/mermaid/hard/mermaid_620.mmd
@@ -0,0 +1,100 @@
+graph LR
+    N0([start])
+    N1[Non_Repudiation]
+    N2([Identity as a Service])
+    N3[Credential Management]
+    N4[(Digital Wallets for Identity)]
+    N5([Decentralized Identifiers])
+    N6[/Multi_Factor Authentication/]
+    N7(Federated Identity Management)
+    N8{Risk_Based Authentication}
+    N9(Customer Identity and Access Management)
+    N10[Attribute Management]
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Workforce Identity Management
+        nest0_0([KYC Integration])
+        nest0_1(Adaptive Authentication)
+    end
+    subgraph Authentication
+        nest1_0[Consent Management]
+        nest1_1([Identity Verification])
+        nest1_2{Verifiable Credentials}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> |revokes access| N8
+    N8 -.-> N9
+    N9 -.-> N10
+    nest0_0 --> nest0_1
+    N7 -.-> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 --> nest1_0
+    nest1_2 --> N10
+    N1 -.-> S1
+    S1 -.-> N9
+    S1 --> N7
+    S1 -.-> N5
+    N3 --> M0
+    N0 -.-> M0
+    N4 -.-> M0
+    M0 --> N6
+    N1 -.-> M1
+    N2 --> M1
+    M1 -.-> N6
+    style N0 fill:#E6EE9C,stroke:#CDDC39
+    style N1 fill:#B3E5FC,stroke:#03A9F4
+    style N2 fill:#B3E5FC,stroke:#03A9F4
+    style N3 fill:#E6EE9C,stroke:#CDDC39
+    style N4 fill:#E6EE9C,stroke:#CDDC39
+    style N5 fill:#B3E5FC,stroke:#03A9F4
+    style N6 fill:#B3E5FC,stroke:#03A9F4
+    style N7 fill:#E6EE9C,stroke:#CDDC39
+    style N8 fill:#F2E6F5,stroke:#CB9BE1
+    style N9 fill:#B3E5FC,stroke:#03A9F4
+    style N10 fill:#F2E6F5,stroke:#CB9BE1
+    style S1 fill:#E6EE9C,stroke:#CDDC39
+    style M0 fill:#F2E6F5,stroke:#CB9BE1
+    style M1 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_0 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_0 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_1 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_2 fill:#E6EE9C,stroke:#CDDC39
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#03A9F4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_623.txt b/train/mermaid/hard/mermaid_623.txt
new file mode 100644
index 0000000000000000000000000000000000000000..da9c747cdaa819598c6c5357b6b14621252b5f18
--- /dev/null
+++ b/train/mermaid/hard/mermaid_623.txt
@@ -0,0 +1,42 @@
+<Adaptive Authentication, connectedTo, Authorization>
+<Adaptive Authentication, connectedTo, Biometric Authentication>
+<Adaptive Authentication, connectedTo, Compliance with Data Protection Regulations>
+<Adaptive Authentication, connectedTo, Password Management>
+<Attribute Management, connectedTo, Single Sign_On>
+<Authorization, connectedTo, Digital Wallets for Identity>
+<Authorization, connectedTo, Identity Proofing>
+<Authorization, connectedTo, Risk_Based Authentication>
+<Authorization, connectedTo, Verifiable Credentials>
+<Authorization, yes, Social Login Integration>
+<Biometric Authentication, connectedTo, Authorization>
+<Biometric Authentication, connectedTo, Password Management>
+<Compliance with Data Protection Regulations, connectedTo, Identity as a Service>
+<Compliance with Data Protection Regulations, partOf, KYC Integration>
+<Decentralized Identifiers, connectedTo, User Provisioning>
+<Decentralized Identifiers, connectedTo, end>
+<Digital Wallets for Identity, connectedTo, end>
+<Federated Identity Management, connectedTo, Decentralized Identifiers>
+<Federated Identity Management, connectedTo, Social Login Integration>
+<Federated Identity Management, connectedTo, User Provisioning>
+<Federated Identity Management, connectedTo, end>
+<Identity Lifecycle Management, connectedTo, Biometric Authentication>
+<Identity Lifecycle Management, partOf, Customer Identity and Access Management>
+<Identity Proofing, connectedTo, Multi_Factor Authentication>
+<Identity as a Service, connectedTo, Privileged Access Management>
+<Identity as a Service, partOf, KYC Integration>
+<Multi_Factor Authentication, connectedTo, Attribute Management>
+<Multi_Factor Authentication, connectedTo, Portable Identities>
+<Multi_Factor Authentication, connectedTo, end>
+<Password Management, connectedTo, Authorization>
+<Portable Identities, connectedTo, Identity Lifecycle Management>
+<Portable Identities, partOf, Customer Identity and Access Management>
+<Privileged Access Management, connectedTo, Federated Identity Management>
+<Privileged Access Management, partOf, KYC Integration>
+<Risk_Based Authentication, connectedTo, Digital Wallets for Identity>
+<Single Sign_On, connectedTo, Decentralized Identifiers>
+<Social Login Integration, connectedTo, Identity Proofing>
+<User Provisioning, connectedTo, Risk_Based Authentication>
+<Verifiable Credentials, connectedTo, Federated Identity Management>
+<start, connectedTo, Adaptive Authentication>
+<start, connectedTo, Authorization>
+<start, connectedTo, Password Management>
diff --git a/train/mermaid/hard/mermaid_624.mmd b/train/mermaid/hard/mermaid_624.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3d2e4e3155fe941546d40a1b0c291f764db45355
--- /dev/null
+++ b/train/mermaid/hard/mermaid_624.mmd
@@ -0,0 +1,114 @@
+graph TD
+    N0([start])
+    N1[/Identity Threat Detection and Response/]
+    N2(Authorization)
+    N3[Digital Signatures]
+    N4(Authentication)
+    N5([Compliance with Data Protection Regulations])
+    N6[Social Login Integration]
+    N7[(Non_Repudiation)]
+    N8[[Consent Management]]
+    N9{Data Minimization Principles}
+    N10[[Digital Certificates]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Portable Identities
+        nest0_0[Privacy Management]
+        nest0_1(Blockchain_based Identity)
+        nest0_2[Data Encryption for Identity]
+    end
+    subgraph Workforce Identity Management
+        nest1_0(Adaptive Authentication)
+        nest1_1{API Security for Identity}
+        nest1_2([KYC Integration])
+        nest1_3[[Risk_Based Authentication]]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N5 -.-> nest0_0
+    nest0_2 --> N9
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 --> N7
+    N1 --> S0
+    S0 --> |no| N4
+    S0 --> N7
+    S0 -.-> N9
+    S0 --> |yes| N8
+    N6 --> S1
+    S1 -.-> N9
+    S1 -.-> N8
+    S1 --> N10
+    N3 --> S2
+    S2 -.-> N8
+    S2 -.-> N6
+    S2 -.-> N7
+    N2 -.-> M1
+    N1 --> M1
+    N3 --> M1
+    M1 -.-> N5
+    N0 -.-> M2
+    N2 --> M2
+    N3 --> M2
+    M2 -.-> N5
+    style S0 fill:#F1F8E9,stroke:#81C784
+    style S1 fill:#DDCEDD,stroke:#AF56A6
+    style S2 fill:#F1F8E9,stroke:#81C784
+    style M1 fill:#F1F8E9,stroke:#81C784
+    style M2 fill:#DDCEDD,stroke:#AF56A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#81C784,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#81C784,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_624.txt b/train/mermaid/hard/mermaid_624.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5646382b913c1ffc949ac2e71ed0850ce797401a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_624.txt
@@ -0,0 +1,40 @@
+<API Security for Identity, connectedTo, KYC Integration>
+<API Security for Identity, partOf, Workforce Identity Management>
+<Adaptive Authentication, connectedTo, API Security for Identity>
+<Adaptive Authentication, partOf, Workforce Identity Management>
+<Authentication, connectedTo, Compliance with Data Protection Regulations>
+<Authorization, connectedTo, Compliance with Data Protection Regulations>
+<Authorization, connectedTo, Digital Signatures>
+<Blockchain_based Identity, connectedTo, Data Encryption for Identity>
+<Blockchain_based Identity, partOf, Portable Identities>
+<Compliance with Data Protection Regulations, connectedTo, Privacy Management>
+<Compliance with Data Protection Regulations, connectedTo, Social Login Integration>
+<Consent Management, connectedTo, Data Minimization Principles>
+<Data Encryption for Identity, connectedTo, Data Minimization Principles>
+<Data Encryption for Identity, partOf, Portable Identities>
+<Data Minimization Principles, connectedTo, Adaptive Authentication>
+<Data Minimization Principles, connectedTo, Digital Certificates>
+<Digital Signatures, connectedTo, Authentication>
+<Digital Signatures, connectedTo, Compliance with Data Protection Regulations>
+<Digital Signatures, connectedTo, Consent Management>
+<Digital Signatures, connectedTo, Non_Repudiation>
+<Digital Signatures, connectedTo, Social Login Integration>
+<Identity Threat Detection and Response, connectedTo, Authorization>
+<Identity Threat Detection and Response, connectedTo, Compliance with Data Protection Regulations>
+<Identity Threat Detection and Response, connectedTo, Data Minimization Principles>
+<Identity Threat Detection and Response, connectedTo, Non_Repudiation>
+<Identity Threat Detection and Response, no, Authentication>
+<Identity Threat Detection and Response, yes, Consent Management>
+<KYC Integration, connectedTo, Risk_Based Authentication>
+<KYC Integration, partOf, Workforce Identity Management>
+<Non_Repudiation, connectedTo, Consent Management>
+<Privacy Management, connectedTo, Blockchain_based Identity>
+<Privacy Management, partOf, Portable Identities>
+<Risk_Based Authentication, connectedTo, Non_Repudiation>
+<Risk_Based Authentication, partOf, Workforce Identity Management>
+<Social Login Integration, connectedTo, Consent Management>
+<Social Login Integration, connectedTo, Data Minimization Principles>
+<Social Login Integration, connectedTo, Digital Certificates>
+<Social Login Integration, connectedTo, Non_Repudiation>
+<start, connectedTo, Compliance with Data Protection Regulations>
+<start, connectedTo, Identity Threat Detection and Response>
diff --git a/train/mermaid/hard/mermaid_625.txt b/train/mermaid/hard/mermaid_625.txt
new file mode 100644
index 0000000000000000000000000000000000000000..20172ad631af3e4133043ed15e119daa72f5442f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_625.txt
@@ -0,0 +1,42 @@
+<Accessibility Features, connectedTo, Curriculum Development>
+<Accessibility Features, connectedTo, Personalized Learning Paths>
+<Accreditation Management, connectedTo, Enrollment and Retention Strategies>
+<Accreditation Management, partOf, AI in Online Education>
+<Asynchronous Learning, connectedTo, Curriculum Development>
+<Asynchronous Learning, connectedTo, Feedback and Grading>
+<Competency_Based Education, connectedTo, Feedback and Grading>
+<Competency_Based Education, partOf, Professional Development Courses>
+<Course Design, connectedTo, Accreditation Management>
+<Course Design, partOf, AI in Online Education>
+<Course Evaluation, connectedTo, Parent or Guardian Communication>
+<Course Evaluation, connectedTo, Test Preparation Courses>
+<Curriculum Development, connectedTo, Open Educational Resources Integration>
+<Discussion Forum Moderation, connectedTo, Virtual Labs and Simulations>
+<Enrollment and Retention Strategies, integrates AI, Virtual Classroom Facilitation>
+<Enrollment and Retention Strategies, partOf, AI in Online Education>
+<Feedback and Grading, connectedTo, Online Tutoring>
+<Gamification in Education, connectedTo, Peer_to_Peer Learning>
+<Instructor Training, connectedTo, Competency_Based Education>
+<Instructor Training, partOf, Professional Development Courses>
+<Interactive Learning Activities, connectedTo, Asynchronous Learning>
+<Interactive Learning Activities, connectedTo, Online Tutoring>
+<Language Learning Platforms, connectedTo, Course Design>
+<Language Learning Platforms, connectedTo, Curriculum Development>
+<Language Learning Platforms, connectedTo, Interactive Learning Activities>
+<Language Learning Platforms, connectedTo, Online Tutoring>
+<Learning Analytics, connectedTo, Accessibility Features>
+<Learning Analytics, connectedTo, Online Tutoring>
+<Online Tutoring, connectedTo, Virtual Classroom Facilitation>
+<Open Educational Resources Integration, connectedTo, Gamification in Education>
+<Parent or Guardian Communication, connectedTo, Instructor Training>
+<Parent or Guardian Communication, partOf, Professional Development Courses>
+<Peer_to_Peer Learning, connectedTo, Discussion Forum Moderation>
+<Personalized Learning Paths, connectedTo, Course Evaluation>
+<Student Engagement Strategies, connectedTo, Accessibility Features>
+<Student Engagement Strategies, connectedTo, Discussion Forum Moderation>
+<Student Engagement Strategies, connectedTo, Learning Analytics>
+<Student Engagement Strategies, connectedTo, Virtual Labs and Simulations>
+<Student Engagement Strategies, creates courses, Peer_to_Peer Learning>
+<Test Preparation Courses, connectedTo, Language Learning Platforms>
+<Virtual Classroom Facilitation, connectedTo, Curriculum Development>
+<Virtual Labs and Simulations, connectedTo, Synchronous Learning>
diff --git a/train/mermaid/hard/mermaid_628.mmd b/train/mermaid/hard/mermaid_628.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e80d10a1c06398dae7edbc91b7931e17db0c867d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_628.mmd
@@ -0,0 +1,107 @@
+graph LR
+    N0([start])
+    N1[(Technical Support for Students)]
+    N2[(Online Tutoring)]
+    N3([Asynchronous Learning])
+    N4[Course Design]
+    N5(Assessment Design)
+    N6(Accessibility Features)
+    N7(AI in Online Education)
+    N8[[Instructor Training]]
+    N9[Student Progress Tracking]
+    N10{Interactive Learning Activities}
+    N11[Accreditation Management]
+    N12(Digital Badges)
+    N13[(Synchronous Learning)]
+    N14([end])
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Professional Development Courses
+        nest0_0[[Virtual Classroom Facilitation]]
+        nest0_1[Student Engagement Strategies]
+    end
+    subgraph Peer_to_Peer Learning
+        nest1_0{Test Preparation Courses}
+        nest1_1{Discussion Forum Moderation}
+        nest1_2[Learning Management System Administration]
+        nest1_3[(Virtual Field Trips)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    N7 --> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N2 -.-> |no| nest1_0
+    nest1_3 --> N1
+    N6 -.-> S1
+    S1 -.-> N14
+    S1 --> N9
+    S1 --> N12
+    N5 -.-> M0
+    N4 -.-> M0
+    N0 --> |no| M0
+    M0 -.-> N14
+    N7 --> M1
+    N4 -.-> M1
+    M1 --> N10
+    N2 -.-> |yes| M2
+    N1 -.-> M2
+    M2 --> N4
+    style S1 fill:#FFDCD6,stroke:#FFB2A5
+    style M0 fill:#FFDCD6,stroke:#FFB2A5
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    style M2 fill:#FFDCD6,stroke:#FFB2A5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFB2A5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_628.txt b/train/mermaid/hard/mermaid_628.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3cd6b52541289407eb93b12aec5f58295a9973bc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_628.txt
@@ -0,0 +1,38 @@
+<AI in Online Education, connectedTo, Instructor Training>
+<AI in Online Education, connectedTo, Interactive Learning Activities>
+<AI in Online Education, connectedTo, Virtual Classroom Facilitation>
+<Accessibility Features, connectedTo, AI in Online Education>
+<Accessibility Features, connectedTo, Digital Badges>
+<Accessibility Features, connectedTo, Student Progress Tracking>
+<Accessibility Features, connectedTo, end>
+<Accreditation Management, connectedTo, Digital Badges>
+<Assessment Design, connectedTo, Accessibility Features>
+<Assessment Design, connectedTo, end>
+<Asynchronous Learning, connectedTo, Course Design>
+<Course Design, connectedTo, Assessment Design>
+<Course Design, connectedTo, Interactive Learning Activities>
+<Course Design, connectedTo, end>
+<Digital Badges, connectedTo, Synchronous Learning>
+<Discussion Forum Moderation, connectedTo, Learning Management System Administration>
+<Discussion Forum Moderation, partOf, Peer_to_Peer Learning>
+<Instructor Training, connectedTo, Student Progress Tracking>
+<Interactive Learning Activities, connectedTo, Accreditation Management>
+<Learning Management System Administration, connectedTo, Virtual Field Trips>
+<Learning Management System Administration, partOf, Peer_to_Peer Learning>
+<Online Tutoring, connectedTo, Asynchronous Learning>
+<Online Tutoring, no, Test Preparation Courses>
+<Online Tutoring, yes, Course Design>
+<Student Engagement Strategies, connectedTo, Course Design>
+<Student Engagement Strategies, partOf, Professional Development Courses>
+<Student Progress Tracking, connectedTo, Interactive Learning Activities>
+<Synchronous Learning, connectedTo, end>
+<Technical Support for Students, connectedTo, Course Design>
+<Technical Support for Students, connectedTo, Online Tutoring>
+<Test Preparation Courses, connectedTo, Discussion Forum Moderation>
+<Test Preparation Courses, partOf, Peer_to_Peer Learning>
+<Virtual Classroom Facilitation, connectedTo, Student Engagement Strategies>
+<Virtual Classroom Facilitation, partOf, Professional Development Courses>
+<Virtual Field Trips, connectedTo, Technical Support for Students>
+<Virtual Field Trips, partOf, Peer_to_Peer Learning>
+<start, connectedTo, Technical Support for Students>
+<start, no, end>
diff --git a/train/mermaid/hard/mermaid_629.txt b/train/mermaid/hard/mermaid_629.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9b035098a9fc0c697cc75a88c4459e759a66b08a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_629.txt
@@ -0,0 +1,50 @@
+<Accessibility Features, connectedTo, Interactive Learning Activities>
+<Accessibility Features, partOf, Gamification in Education>
+<Adaptive Learning Technologies, connectedTo, Virtual Labs and Simulations>
+<Adaptive Learning Technologies, partOf, Gamification in Education>
+<Blended Learning Models, connectedTo, Competency_Based Education>
+<Blended Learning Models, connectedTo, Interactive Learning Activities>
+<Blended Learning Models, connectedTo, Open Educational Resources Integration>
+<Blended Learning Models, connectedTo, Test Preparation Courses>
+<Blended Learning Models, connectedTo, Virtual Classroom Facilitation>
+<Bootcamp Development, connectedTo, Competency_Based Education>
+<Bootcamp Development, connectedTo, Digital Badges>
+<Bootcamp Development, gamifies experiences, Online Tutoring>
+<Certification Issuance, connectedTo, Bootcamp Development>
+<Certification Issuance, connectedTo, Competency_Based Education>
+<Certification Issuance, connectedTo, Online Tutoring>
+<Certification Issuance, connectedTo, Test Preparation Courses>
+<Competency_Based Education, connectedTo, Language Learning Platforms>
+<Competency_Based Education, connectedTo, Virtual Field Trips>
+<Competency_Based Education, provides formative assessment, Open Educational Resources Integration>
+<Course Design, connectedTo, Learning Analytics>
+<Course Design, partOf, Micro_credential Programs>
+<Curriculum Development, connectedTo, Peer_to_Peer Learning>
+<Curriculum Development, connectedTo, Personalized Learning Paths>
+<Digital Badges, connectedTo, Learning Management System Administration>
+<Digital Badges, partOf, Micro_credential Programs>
+<Interactive Learning Activities, connectedTo, Competency_Based Education>
+<Interactive Learning Activities, connectedTo, Curriculum Development>
+<Interactive Learning Activities, connectedTo, Online Tutoring>
+<Interactive Learning Activities, connectedTo, Test Preparation Courses>
+<Language Learning Platforms, connectedTo, Online Tutoring>
+<Language Learning Platforms, connectedTo, Virtual Field Trips>
+<Learning Analytics, connectedTo, Virtual Field Trips>
+<Learning Analytics, partOf, Micro_credential Programs>
+<Learning Management System Administration, connectedTo, Course Design>
+<Learning Management System Administration, partOf, Micro_credential Programs>
+<Online Tutoring, connectedTo, Open Educational Resources Integration>
+<Peer_to_Peer Learning, connectedTo, Certification Issuance>
+<Peer_to_Peer Learning, connectedTo, Competency_Based Education>
+<Personalized Learning Paths, connectedTo, Adaptive Learning Technologies>
+<Personalized Learning Paths, partOf, Gamification in Education>
+<Professional Development Courses, connectedTo, Online Tutoring>
+<Student Engagement Strategies, connectedTo, Test Preparation Courses>
+<Test Preparation Courses, connectedTo, Online Tutoring>
+<Test Preparation Courses, connectedTo, Open Educational Resources Integration>
+<Test Preparation Courses, connectedTo, Professional Development Courses>
+<Virtual Classroom Facilitation, connectedTo, Student Engagement Strategies>
+<Virtual Classroom Facilitation, connectedTo, Test Preparation Courses>
+<Virtual Field Trips, connectedTo, Virtual Classroom Facilitation>
+<Virtual Labs and Simulations, connectedTo, Accessibility Features>
+<Virtual Labs and Simulations, partOf, Gamification in Education>
diff --git a/train/mermaid/hard/mermaid_63.txt b/train/mermaid/hard/mermaid_63.txt
new file mode 100644
index 0000000000000000000000000000000000000000..560bfd54c38a78ecbb221e6967ad32d53307afa7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_63.txt
@@ -0,0 +1,45 @@
+<Arbitration Session, connectedTo, Divorce Proceedings>
+<Arbitration Session, no, Patent Application>
+<Bail Hearing, partOf, Copyright Infringement>
+<Bail Hearing, yes, Evidence Collection>
+<Case Filing, connectedTo, Notarization>
+<Case Filing, partOf, Copyright Infringement>
+<Closing Argument, connectedTo, Witness Testimony>
+<Divorce Proceedings, connectedTo, Intel Property Licensing>
+<Divorce Proceedings, partOf, Cross_Examination>
+<Enforcement, connectedTo, Evidence Collection>
+<Estate Planning, connectedTo, Arbitration Session>
+<Estate Planning, connectedTo, Closing Argument>
+<Estate Planning, connectedTo, Evidence Collection>
+<Estate Planning, connectedTo, Witness Testimony>
+<Estate Planning, no, Evidence Collection>
+<Evidence Collection, no, Trademark Registration>
+<Intel Property Licensing, connectedTo, Jury Selection>
+<Intel Property Licensing, partOf, Cross_Examination>
+<Jury Selection, connectedTo, Verdict Announcement>
+<Jury Selection, partOf, Cross_Examination>
+<Legal Consultation, connectedTo, Bail Hearing>
+<Legal Consultation, partOf, Copyright Infringement>
+<Legal Research, connectedTo, Closing Argument>
+<Legal Research, yes, Case Filing>
+<Notarization, connectedTo, Legal Consultation>
+<Notarization, partOf, Copyright Infringement>
+<Patent Application, connectedTo, Enforcement>
+<Patent Application, connectedTo, Evidence Collection>
+<Plea Bargain, connectedTo, Arbitration Session>
+<Plea Bargain, connectedTo, Enforcement>
+<Plea Bargain, connectedTo, Estate Planning>
+<Plea Bargain, connectedTo, Patent Application>
+<Plea Bargain, connectedTo, Trademark Registration>
+<Trademark Registration, connectedTo, Closing Argument>
+<Trademark Registration, connectedTo, Corporate Formation>
+<Trademark Registration, connectedTo, Legal Research>
+<Trial Session, connectedTo, Enforcement>
+<Trial Session, connectedTo, Estate Planning>
+<Trial Session, connectedTo, Plea Bargain>
+<Verdict Announcement, partOf, Cross_Examination>
+<Verdict Announcement, yes, Evidence Collection>
+<Witness Testimony, connectedTo, Corporate Formation>
+<start, connectedTo, Enforcement>
+<start, connectedTo, Estate Planning>
+<start, connectedTo, Trial Session>
diff --git a/train/mermaid/hard/mermaid_630.txt b/train/mermaid/hard/mermaid_630.txt
new file mode 100644
index 0000000000000000000000000000000000000000..02a5e093aff388ea1be52eda21ad8c3352d058fa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_630.txt
@@ -0,0 +1,42 @@
+<AI in Online Education, connectedTo, Competency_Based Education>
+<AI in Online Education, connectedTo, Digital Badges>
+<AI in Online Education, connectedTo, Student Engagement Strategies>
+<Asynchronous Learning, connectedTo, Course Evaluation>
+<Bootcamp Development, connectedTo, Curriculum Development>
+<Bootcamp Development, connectedTo, Parent or Guardian Communication>
+<Competency_Based Education, connectedTo, Discussion Forum Moderation>
+<Competency_Based Education, connectedTo, Student Engagement Strategies>
+<Content Creation, connectedTo, Asynchronous Learning>
+<Content Creation, connectedTo, Bootcamp Development>
+<Content Creation, connectedTo, Course Evaluation>
+<Content Creation, connectedTo, Parent or Guardian Communication>
+<Content Creation, connectedTo, Student Engagement Strategies>
+<Course Evaluation, connectedTo, Bootcamp Development>
+<Course Evaluation, connectedTo, Parent or Guardian Communication>
+<Course Evaluation, connectedTo, Student Engagement Strategies>
+<Course Evaluation, connectedTo, end>
+<Curriculum Development, connectedTo, Feedback and Grading>
+<Curriculum Development, partOf, Course Design>
+<Digital Badges, connectedTo, Asynchronous Learning>
+<Digital Badges, connectedTo, Bootcamp Development>
+<Digital Badges, connectedTo, Content Creation>
+<Digital Badges, connectedTo, Parent or Guardian Communication>
+<Digital Badges, no, end>
+<Discussion Forum Moderation, connectedTo, Digital Badges>
+<Discussion Forum Moderation, connectedTo, Learning Analytics>
+<Feedback and Grading, connectedTo, Student Engagement Strategies>
+<Feedback and Grading, partOf, Course Design>
+<Gamification in Education, connectedTo, Parent or Guardian Communication>
+<Gamification in Education, partOf, Virtual Classroom Facilitation>
+<Language Learning Platforms, connectedTo, Gamification in Education>
+<Language Learning Platforms, partOf, Virtual Classroom Facilitation>
+<Learning Analytics, connectedTo, Language Learning Platforms>
+<Learning Analytics, partOf, Virtual Classroom Facilitation>
+<Parent or Guardian Communication, connectedTo, Test Preparation Courses>
+<Professional Development Courses, connectedTo, AI in Online Education>
+<Professional Development Courses, connectedTo, Digital Badges>
+<Student Engagement Strategies, connectedTo, Bootcamp Development>
+<Student Progress Tracking, connectedTo, Professional Development Courses>
+<Test Preparation Courses, connectedTo, end>
+<start, connectedTo, Student Engagement Strategies>
+<start, connectedTo, Student Progress Tracking>
diff --git a/train/mermaid/hard/mermaid_632.mmd b/train/mermaid/hard/mermaid_632.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f1824338891828578b14c98fd8b2081ebbb27978
--- /dev/null
+++ b/train/mermaid/hard/mermaid_632.mmd
@@ -0,0 +1,114 @@
+graph RL
+    N0([start])
+    N1[/Language Learning Platforms/]
+    N2[Micro_credential Programs]
+    N3[[Accessibility Features]]
+    N4[(Blended Learning Models)]
+    N5(Peer_to_Peer Learning)
+    N6[Open Educational Resources Integration]
+    N7(Accreditation Management)
+    N8[Learning Management System Administration]
+    N9(Course Design)
+    N10[/Online Tutoring/]
+    N11[[Personalized Learning Paths]]
+    N12{Virtual Classroom Facilitation}
+    N13(Student Progress Tracking)
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Feedback and Grading
+        nest0_0(Discussion Forum Moderation)
+        nest0_1(Learning Analytics)
+        nest0_2([Bootcamp Development])
+    end
+    subgraph Gamification in Education
+        nest1_0[/Virtual Labs and Simulations/]
+        nest1_1{Parent or Guardian Communication}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N6 -.-> nest0_0
+    nest0_2 --> N10
+    nest1_0 -.-> nest1_1
+    N13 -.-> nest1_0
+    nest1_1 --> N1
+    N9 --> S0
+    S0 -.-> N14
+    S0 --> N11
+    S0 -.-> N12
+    N4 -.-> S1
+    S1 --> N12
+    S1 --> N11
+    S1 -.-> N7
+    N0 --> M0
+    N1 -.-> M0
+    M0 --> N3
+    N4 --> M1
+    N2 -.-> M1
+    N1 -.-> M1
+    M1 -.-> N7
+    N0 -.-> M2
+    N1 -.-> M2
+    M2 -.-> N3
+    style S0 fill:#D3D7EB,stroke:#8C9EFF
+    style S1 fill:#E0E6E9,stroke:#AABEC6
+    style M0 fill:#E0E6E9,stroke:#AABEC6
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style M2 fill:#FFF3E0,stroke:#FFA726
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#8C9EFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_633.mmd b/train/mermaid/hard/mermaid_633.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0a8287c1c088c20f6fa08dd1dcdd2e7f13533b74
--- /dev/null
+++ b/train/mermaid/hard/mermaid_633.mmd
@@ -0,0 +1,124 @@
+graph TD
+    N0([start])
+    N1[Employer Recognition]
+    N2[Video Lecture Production]
+    N3[/Micro_credential Stacking/]
+    N4(Platform Selection)
+    N5[Specialization or Professional Certificate Programs]
+    N6(Content Licensing)
+    N7(University Partnerships)
+    N8([Mobile Learning Experience])
+    N9([Verified Track Management])
+    N10[/Course Audit Options/]
+    N11(Engagement Metrics Tracking)
+    N12([Peer Grading Implementation])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Learner Analytics
+        nest0_0([Assessment Creation])
+        nest0_1[[Skill_Based Learning Outcomes]]
+    end
+    subgraph Research on MOOC Effectiveness
+        nest1_0[/Forum Moderation/]
+        nest1_1[Technical Infrastructure for Scale]
+        nest1_2(Translation and Localization)
+        nest1_3[Course Promotion]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> |secures data| N6
+    N6 --> |funds development| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    N7 --> nest0_0
+    nest0_1 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 --> nest1_0
+    nest1_3 -.-> N7
+    N5 --> S0
+    S0 --> N9
+    S0 -.-> |builds communities| N11
+    N1 --> S1
+    S1 -.-> N6
+    S1 --> N4
+    N8 --> S2
+    S2 --> N11
+    S2 -.-> |integrates videos| N12
+    N6 --> M0
+    N0 --> M0
+    M0 --> N12
+    N1 --> M1
+    N2 --> M1
+    M1 -.-> N6
+    style N0 fill:#FFEBEE,stroke:#E57373
+    style N1 fill:#E0F7FA,stroke:#00BCD4
+    style N2 fill:#C9EFEC,stroke:#6FE1D5
+    style N3 fill:#C9EFEC,stroke:#6FE1D5
+    style N4 fill:#E0F7FA,stroke:#00BCD4
+    style N5 fill:#C9EFEC,stroke:#6FE1D5
+    style N6 fill:#E0F7FA,stroke:#00BCD4
+    style N7 fill:#C9EFEC,stroke:#6FE1D5
+    style N8 fill:#C9EFEC,stroke:#6FE1D5
+    style N9 fill:#E0F7FA,stroke:#00BCD4
+    style N10 fill:#E0F7FA,stroke:#00BCD4
+    style N11 fill:#E0F7FA,stroke:#00BCD4
+    style N12 fill:#E0F7FA,stroke:#00BCD4
+    style S0 fill:#C9EFEC,stroke:#6FE1D5
+    style S1 fill:#FFEBEE,stroke:#E57373
+    style S2 fill:#E0F7FA,stroke:#00BCD4
+    style M0 fill:#E0F7FA,stroke:#00BCD4
+    style M1 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_1 fill:#FFEBEE,stroke:#E57373
+    style nest1_0 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_1 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_2 fill:#FFEBEE,stroke:#E57373
+    style nest1_3 fill:#C9EFEC,stroke:#6FE1D5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E57373,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_633.txt b/train/mermaid/hard/mermaid_633.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a156c608eb4b6fe43e99f5701bb02b32a5ae25d3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_633.txt
@@ -0,0 +1,35 @@
+<Assessment Creation, connectedTo, Skill_Based Learning Outcomes>
+<Assessment Creation, partOf, Learner Analytics>
+<Content Licensing, connectedTo, Peer Grading Implementation>
+<Content Licensing, funds development, University Partnerships>
+<Course Audit Options, connectedTo, Engagement Metrics Tracking>
+<Course Promotion, connectedTo, University Partnerships>
+<Course Promotion, partOf, Research on MOOC Effectiveness>
+<Employer Recognition, connectedTo, Content Licensing>
+<Employer Recognition, connectedTo, Platform Selection>
+<Employer Recognition, connectedTo, Video Lecture Production>
+<Engagement Metrics Tracking, connectedTo, Peer Grading Implementation>
+<Forum Moderation, connectedTo, Technical Infrastructure for Scale>
+<Forum Moderation, partOf, Research on MOOC Effectiveness>
+<Micro_credential Stacking, connectedTo, Platform Selection>
+<Mobile Learning Experience, connectedTo, Engagement Metrics Tracking>
+<Mobile Learning Experience, connectedTo, Verified Track Management>
+<Mobile Learning Experience, integrates videos, Peer Grading Implementation>
+<Platform Selection, connectedTo, Specialization or Professional Certificate Programs>
+<Skill_Based Learning Outcomes, connectedTo, Mobile Learning Experience>
+<Skill_Based Learning Outcomes, partOf, Learner Analytics>
+<Specialization or Professional Certificate Programs, builds communities, Engagement Metrics Tracking>
+<Specialization or Professional Certificate Programs, connectedTo, Verified Track Management>
+<Specialization or Professional Certificate Programs, secures data, Content Licensing>
+<Technical Infrastructure for Scale, connectedTo, Translation and Localization>
+<Technical Infrastructure for Scale, partOf, Research on MOOC Effectiveness>
+<Translation and Localization, connectedTo, Course Promotion>
+<Translation and Localization, partOf, Research on MOOC Effectiveness>
+<University Partnerships, connectedTo, Assessment Creation>
+<University Partnerships, connectedTo, Mobile Learning Experience>
+<Verified Track Management, connectedTo, Course Audit Options>
+<Verified Track Management, connectedTo, Forum Moderation>
+<Video Lecture Production, connectedTo, Content Licensing>
+<Video Lecture Production, connectedTo, Micro_credential Stacking>
+<start, connectedTo, Employer Recognition>
+<start, connectedTo, Peer Grading Implementation>
diff --git a/train/mermaid/hard/mermaid_636.txt b/train/mermaid/hard/mermaid_636.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8d78f276b479c5a4d1cf72b5d04e94f9b3333099
--- /dev/null
+++ b/train/mermaid/hard/mermaid_636.txt
@@ -0,0 +1,33 @@
+<Assessment Creation, connectedTo, Gamification for Engagement>
+<Content Licensing, connectedTo, Technical Infrastructure for Scale>
+<Content Licensing, partOf, Industry Collaboration for Content>
+<Course Audit Options, connectedTo, Platform Selection>
+<Course Audit Options, partOf, Course Promotion>
+<Employer Recognition, connectedTo, Forum Moderation>
+<Employer Recognition, partOf, Industry Collaboration for Content>
+<Financial Aid for Learners, connectedTo, Course Audit Options>
+<Financial Aid for Learners, partOf, Course Promotion>
+<Forum Moderation, connectedTo, Assessment Creation>
+<Forum Moderation, connectedTo, Gamification for Engagement>
+<Forum Moderation, connectedTo, Learner Feedback Analysis>
+<Forum Moderation, connectedTo, Marketing to Global Audience>
+<Forum Moderation, connectedTo, University Partnerships>
+<Forum Moderation, promotes courses, Assessment Creation>
+<Gamification for Engagement, connectedTo, University Partnerships>
+<Learner Feedback Analysis, connectedTo, Assessment Creation>
+<Learner Feedback Analysis, connectedTo, Financial Aid for Learners>
+<Learner Feedback Analysis, connectedTo, Marketing to Global Audience>
+<Marketing to Global Audience, connectedTo, Assessment Creation>
+<Marketing to Global Audience, connectedTo, Content Licensing>
+<Micro_credential Stacking, connectedTo, Mobile Learning Experience>
+<Micro_credential Stacking, partOf, Course Promotion>
+<Mobile Learning Experience, connectedTo, Assessment Creation>
+<Mobile Learning Experience, connectedTo, Forum Moderation>
+<Mobile Learning Experience, connectedTo, Gamification for Engagement>
+<Mobile Learning Experience, connectedTo, University Partnerships>
+<Platform Selection, connectedTo, Micro_credential Stacking>
+<Platform Selection, partOf, Course Promotion>
+<Skill_Based Learning Outcomes, connectedTo, Assessment Creation>
+<Skill_Based Learning Outcomes, connectedTo, Mobile Learning Experience>
+<Technical Infrastructure for Scale, connectedTo, Employer Recognition>
+<Technical Infrastructure for Scale, partOf, Industry Collaboration for Content>
diff --git a/train/mermaid/hard/mermaid_637.txt b/train/mermaid/hard/mermaid_637.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5f9a1d26d3dc4678c703fd9aa765571f89409055
--- /dev/null
+++ b/train/mermaid/hard/mermaid_637.txt
@@ -0,0 +1,49 @@
+<Completion Rate Optimization, connectedTo, end>
+<Content Licensing, connectedTo, University Partnerships>
+<Content Licensing, yes, end>
+<Course Content Development, connectedTo, Skill_Based Learning Outcomes>
+<Course Content Development, partOf, Industry Collaboration for Content>
+<Course Promotion, connectedTo, Platform Selection>
+<Course Promotion, partOf, Engagement Metrics Tracking>
+<Course Retirement Planning, connectedTo, Self_Paced Learning Tracks>
+<Course Retirement Planning, no, Research on MOOC Effectiveness>
+<Global Accessibility Features, connectedTo, Completion Rate Optimization>
+<Instructor Recruitment for MOOCs, connectedTo, Verified Track Management>
+<Instructor Recruitment for MOOCs, connectedTo, end>
+<Instructor_Led Sessions, connectedTo, Video Lecture Production>
+<Instructor_Led Sessions, yes, end>
+<Learner Analytics, connectedTo, Completion Rate Optimization>
+<Learner Analytics, connectedTo, Course Promotion>
+<Learner Analytics, connectedTo, Global Accessibility Features>
+<Learner Analytics, connectedTo, Learner Support>
+<Learner Feedback Analysis, connectedTo, Micro_credential Stacking>
+<Learner Support, yes, Global Accessibility Features>
+<Micro_credential Stacking, connectedTo, Learner Analytics>
+<Peer Grading Implementation, connectedTo, Instructor Recruitment for MOOCs>
+<Peer Grading Implementation, partOf, Industry Collaboration for Content>
+<Platform Selection, connectedTo, University Partnerships>
+<Platform Selection, partOf, Engagement Metrics Tracking>
+<Research on MOOC Effectiveness, connectedTo, Instructor_Led Sessions>
+<Self_Paced Learning Tracks, connectedTo, Research on MOOC Effectiveness>
+<Self_Paced Learning Tracks, connectedTo, Video Lecture Production>
+<Skill_Based Learning Outcomes, partOf, Industry Collaboration for Content>
+<Skill_Based Learning Outcomes, yes, Peer Grading Implementation>
+<Specialization or Professional Certificate Programs, connectedTo, Content Licensing>
+<Translation and Localization, connectedTo, Course Content Development>
+<Translation and Localization, connectedTo, Course Retirement Planning>
+<Translation and Localization, connectedTo, Learner Analytics>
+<Translation and Localization, connectedTo, Learner Support>
+<Translation and Localization, connectedTo, Specialization or Professional Certificate Programs>
+<Translation and Localization, connectedTo, University Partnerships>
+<Translation and Localization, connectedTo, Video Lecture Production>
+<Translation and Localization, connectedTo, end>
+<University Partnerships, connectedTo, Learner Feedback Analysis>
+<Verified Track Management, connectedTo, Specialization or Professional Certificate Programs>
+<Video Lecture Production, connectedTo, Completion Rate Optimization>
+<Video Lecture Production, connectedTo, Content Licensing>
+<Video Lecture Production, connectedTo, Instructor Recruitment for MOOCs>
+<Video Lecture Production, connectedTo, Learner Feedback Analysis>
+<Video Lecture Production, connectedTo, Verified Track Management>
+<start, connectedTo, Research on MOOC Effectiveness>
+<start, connectedTo, Translation and Localization>
+<start, connectedTo, Video Lecture Production>
diff --git a/train/mermaid/hard/mermaid_639.mmd b/train/mermaid/hard/mermaid_639.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..aa91b309dc86b5c18ba6bd198fcd55b93d60956c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_639.mmd
@@ -0,0 +1,121 @@
+graph LR
+    N0([start])
+    N1[[Industry Collaboration for Content]]
+    N2([Learner Support])
+    N3[(Research on MOOC Effectiveness)]
+    N4[(Self_Paced Learning Tracks)]
+    N5([Instructor Recruitment for MOOCs])
+    N6{Continuous Course Improvement}
+    N7(Marketing to Global Audience)
+    N8(Completion Rate Optimization)
+    N9[/Engagement Metrics Tracking/]
+    N10[[Global Accessibility Features]]
+    N11(Platform Selection)
+    N12([Discussion Forum Management])
+    N13[/Verified Track Management/]
+    N14[Technical Infrastructure for Scale]
+    N15[Subscription Models]
+    N16{Specialization or Professional Certificate Programs}
+    N17([Corporate Training Solutions])
+    N18(Skill_Based Learning Outcomes)
+    N19([end])
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Learner Analytics
+        nest0_0{Video Lecture Production}
+        nest0_1[Financial Aid for Learners]
+        nest0_2([Translation and Localization])
+    end
+    subgraph Micro_credential Stacking
+        nest1_0{Content Licensing}
+        nest1_1([Learner Feedback Analysis])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> |yes| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> |no| N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    N17 --> N18
+    N18 --> N19
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N12 -.-> nest0_0
+    nest0_2 --> N11
+    nest1_0 --> nest1_1
+    N11 --> nest1_0
+    nest1_1 --> N3
+    N4 -.-> S1
+    S1 --> N16
+    S1 -.-> N7
+    S1 --> N8
+    N0 -.-> S2
+    S2 -.-> N17
+    S2 --> N11
+    S2 --> |no| N8
+    N3 -.-> |no| M0
+    N1 --> M0
+    N2 -.-> M0
+    M0 --> N5
+    N3 -.-> M1
+    N2 -.-> M1
+    M1 --> N6
+    style S1 fill:#E0E6E9,stroke:#AABEC6
+    style S2 fill:#F9FBE7,stroke:#C0CA33
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    style M1 fill:#F9FBE7,stroke:#C0CA33
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_640.txt b/train/mermaid/hard/mermaid_640.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c1d427bc68c85f34e9fafa674941e63ccec13622
--- /dev/null
+++ b/train/mermaid/hard/mermaid_640.txt
@@ -0,0 +1,43 @@
+<Completion Rate Optimization, connectedTo, Course Retirement Planning>
+<Completion Rate Optimization, connectedTo, Micro_credential Stacking>
+<Content Licensing, connectedTo, Completion Rate Optimization>
+<Content Licensing, connectedTo, Course Retirement Planning>
+<Content Licensing, connectedTo, Self_Paced Learning Tracks>
+<Content Licensing, connectedTo, Subscription Models>
+<Content Licensing, connectedTo, University Partnerships>
+<Course Audit Options, collaborates with experts, Mobile Learning Experience>
+<Course Content Development, connectedTo, Global Accessibility Features>
+<Course Content Development, partOf, Industry Collaboration for Content>
+<Course Pilot Testing, connectedTo, Course Content Development>
+<Course Pilot Testing, partOf, Industry Collaboration for Content>
+<Course Promotion, connectedTo, Peer Grading Implementation>
+<Course Promotion, partOf, Verified Track Management>
+<Financial Aid for Learners, connectedTo, Course Audit Options>
+<Financial Aid for Learners, connectedTo, Course Retirement Planning>
+<Financial Aid for Learners, connectedTo, Marketing to Global Audience>
+<Financial Aid for Learners, partners with universities, Global Accessibility Features>
+<Forum Moderation, connectedTo, Technical Infrastructure for Scale>
+<Gamification for Engagement, administers quizzes, Specialization or Professional Certificate Programs>
+<Gamification for Engagement, connectedTo, Forum Moderation>
+<Global Accessibility Features, connectedTo, Research on MOOC Effectiveness>
+<Learner Support, connectedTo, Content Licensing>
+<Marketing to Global Audience, connectedTo, Course Retirement Planning>
+<Micro_credential Stacking, connectedTo, Financial Aid for Learners>
+<Mobile Learning Experience, connectedTo, Course Retirement Planning>
+<Mobile Learning Experience, connectedTo, Subscription Models>
+<Peer Grading Implementation, connectedTo, Skill_Based Learning Outcomes>
+<Peer Grading Implementation, partOf, Verified Track Management>
+<Platform Selection, connectedTo, Course Promotion>
+<Platform Selection, partOf, Verified Track Management>
+<Research on MOOC Effectiveness, connectedTo, Course Pilot Testing>
+<Research on MOOC Effectiveness, connectedTo, Self_Paced Learning Tracks>
+<Self_Paced Learning Tracks, connectedTo, Course Audit Options>
+<Skill_Based Learning Outcomes, connectedTo, Gamification for Engagement>
+<Specialization or Professional Certificate Programs, connectedTo, Platform Selection>
+<Specialization or Professional Certificate Programs, partOf, Verified Track Management>
+<Subscription Models, manages certifications, Marketing to Global Audience>
+<Technical Infrastructure for Scale, connectedTo, Learner Support>
+<University Partnerships, connectedTo, Completion Rate Optimization>
+<University Partnerships, connectedTo, Financial Aid for Learners>
+<University Partnerships, connectedTo, Micro_credential Stacking>
+<Video Lecture Production, facilitates peer review, Skill_Based Learning Outcomes>
diff --git a/train/mermaid/hard/mermaid_643.mmd b/train/mermaid/hard/mermaid_643.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c12362964d1eab20697de9548520092b02d48844
--- /dev/null
+++ b/train/mermaid/hard/mermaid_643.mmd
@@ -0,0 +1,80 @@
+graph RL
+    N0([start])
+    N1([Performance Prediction Models])
+    N2[Personalized Study Plans]
+    N3(Adaptive Learning Algorithms)
+    N4{Reading Comprehension Drills}
+    N5(Parent or Guardian Updates)
+    N6[[Practice Test Creation]]
+    N7(Exam Day Tips)
+    N8[Score Analysis]
+    N9(Science Concept Review)
+    N10(Study Group Facilitation)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Performance Feedback
+        nest0_0[Math Skills Refresher]
+        nest0_1(Student Progress Tracking)
+    end
+    subgraph Critical Thinking Development
+        nest1_0([Test_Taking Strategies])
+        nest1_1[(Study Material Design)]
+        nest1_2{Time Management Coaching}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    nest0_0 -.-> |no| nest0_1
+    N9 -.-> nest0_0
+    nest0_1 --> |yes| N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 --> N10
+    N7 -.-> S0
+    S0 --> N9
+    S0 --> N10
+    N3 -.-> S1
+    S1 --> N9
+    S1 -.-> N6
+    N1 --> |yes| M0
+    N5 -.-> |no| M0
+    M0 -.-> N7
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style M0 fill:#E8EAF6,stroke:#7986CB
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#7986CB,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7986CB,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_645.txt b/train/mermaid/hard/mermaid_645.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6eea5f6a648b6fdf9c0d5dce02199d769da78ff3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_645.txt
@@ -0,0 +1,36 @@
+<Adaptive Learning Algorithms, assesses, Reading Comprehension Drills>
+<Certification Exam Prep, connectedTo, Adaptive Learning Algorithms>
+<Certification Exam Prep, connectedTo, Motivation Coaching>
+<Certification Exam Prep, connectedTo, Reading Comprehension Drills>
+<Certification Exam Prep, connectedTo, Student Progress Tracking>
+<Curriculum Development, connectedTo, Graduate School Exam Prep>
+<Curriculum Development, partOf, College Entrance Exam Prep>
+<English Proficiency Test Prep, connectedTo, Certification Exam Prep>
+<English Proficiency Test Prep, connectedTo, Motivation Coaching>
+<English Proficiency Test Prep, connectedTo, Reading Comprehension Drills>
+<English Proficiency Test Prep, connectedTo, Test_Taking Strategies>
+<Graduate School Exam Prep, coaches, Interactive Exercises>
+<Graduate School Exam Prep, partOf, College Entrance Exam Prep>
+<Interactive Exercises, connectedTo, Math Skills Refresher>
+<Interactive Exercises, connectedTo, Motivation Coaching>
+<Math Skills Refresher, connectedTo, Reading Comprehension Drills>
+<Math Skills Refresher, engages, Performance Feedback>
+<Math Skills Refresher, licenses, English Proficiency Test Prep>
+<Memory Techniques Training, connectedTo, Performance Prediction Models>
+<Memory Techniques Training, partOf, Virtual Proctoring>
+<Motivation Coaching, connectedTo, Adaptive Learning Algorithms>
+<Motivation Coaching, connectedTo, Reading Comprehension Drills>
+<Performance Feedback, connectedTo, Memory Techniques Training>
+<Performance Feedback, partOf, Virtual Proctoring>
+<Performance Prediction Models, connectedTo, Question Bank Management>
+<Performance Prediction Models, partOf, Virtual Proctoring>
+<Question Bank Management, connectedTo, Student Progress Tracking>
+<Question Bank Management, partOf, Virtual Proctoring>
+<Reading Comprehension Drills, connectedTo, Student Progress Tracking>
+<Score Analysis, connectedTo, Curriculum Development>
+<Score Analysis, partOf, College Entrance Exam Prep>
+<Test_Taking Strategies, connectedTo, Score Analysis>
+<Test_Taking Strategies, partOf, College Entrance Exam Prep>
+<start, connectedTo, Motivation Coaching>
+<start, connectedTo, Reading Comprehension Drills>
+<start, motivates, Interactive Exercises>
diff --git a/train/mermaid/hard/mermaid_646.txt b/train/mermaid/hard/mermaid_646.txt
new file mode 100644
index 0000000000000000000000000000000000000000..aba795095c5f68c5cf7daaa80641ec071c404051
--- /dev/null
+++ b/train/mermaid/hard/mermaid_646.txt
@@ -0,0 +1,37 @@
+<AI_Powered Tutoring, connectedTo, English Proficiency Test Prep>
+<AI_Powered Tutoring, connectedTo, Test_Taking Strategies>
+<Certification Exam Prep, connectedTo, Performance Feedback>
+<Diagnostic Assessment, no, Certification Exam Prep>
+<English Proficiency Test Prep, connectedTo, Graduate School Exam Prep>
+<Graduate School Exam Prep, yes, Tutoring Session>
+<History Topic Mastery, connectedTo, Score Analysis>
+<History Topic Mastery, partOf, Writing Skills Improvement>
+<Mock Exam Administration, connectedTo, English Proficiency Test Prep>
+<Mock Exam Administration, connectedTo, Professional Licensure Exam Prep>
+<Motivation Coaching, connectedTo, Question Bank Management>
+<Motivation Coaching, connectedTo, Study Group Facilitation>
+<Performance Feedback, connectedTo, Stress Management for Exams>
+<Performance Prediction Models, connectedTo, Video Lecture Production>
+<Professional Licensure Exam Prep, connectedTo, Student Progress Tracking>
+<Professional Licensure Exam Prep, connectedTo, Test_Taking Strategies>
+<Question Bank Management, connectedTo, Subject Matter Review>
+<Question Bank Management, partOf, Parent or Guardian Updates>
+<Score Analysis, connectedTo, Professional Licensure Exam Prep>
+<Score Analysis, partOf, Writing Skills Improvement>
+<Stress Management for Exams, connectedTo, end>
+<Student Progress Tracking, connectedTo, Motivation Coaching>
+<Student Progress Tracking, connectedTo, Video Lecture Production>
+<Student Progress Tracking, connectedTo, end>
+<Study Group Facilitation, connectedTo, AI_Powered Tutoring>
+<Study Group Facilitation, yes, History Topic Mastery>
+<Subject Matter Review, connectedTo, Motivation Coaching>
+<Subject Matter Review, partOf, Parent or Guardian Updates>
+<Test_Taking Strategies, connectedTo, Certification Exam Prep>
+<Test_Taking Strategies, connectedTo, Diagnostic Assessment>
+<Test_Taking Strategies, connectedTo, Performance Prediction Models>
+<Test_Taking Strategies, connectedTo, Tutoring Session>
+<Tutoring Session, connectedTo, Virtual Proctoring>
+<Video Lecture Production, connectedTo, English Proficiency Test Prep>
+<Virtual Proctoring, connectedTo, Diagnostic Assessment>
+<start, connectedTo, Mock Exam Administration>
+<start, connectedTo, Test_Taking Strategies>
diff --git a/train/mermaid/hard/mermaid_647.txt b/train/mermaid/hard/mermaid_647.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a6a99d0ae2e332c598921484e60c67ff38216a8c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_647.txt
@@ -0,0 +1,39 @@
+<Certification Exam Prep, connectedTo, Graduate School Exam Prep>
+<Certification Exam Prep, connectedTo, Mock Exam Administration>
+<Certification Exam Prep, connectedTo, Parent or Guardian Updates>
+<Certification Exam Prep, connectedTo, Reading Comprehension Drills>
+<College Entrance Exam Prep, connectedTo, Practice Test Creation>
+<College Entrance Exam Prep, partOf, Professional Licensure Exam Prep>
+<Diagnostic Assessment, connectedTo, Reading Comprehension Drills>
+<Diagnostic Assessment, partOf, Exam Day Tips>
+<Graduate School Exam Prep, connectedTo, Mock Exam Administration>
+<Graduate School Exam Prep, connectedTo, Performance Prediction Models>
+<Graduate School Exam Prep, connectedTo, Test_Taking Strategies>
+<Graduate School Exam Prep, connectedTo, end>
+<History Topic Mastery, connectedTo, Reading Comprehension Drills>
+<History Topic Mastery, connectedTo, Tutoring Session>
+<Math Skills Refresher, no, Diagnostic Assessment>
+<Math Skills Refresher, partOf, Exam Day Tips>
+<Memory Techniques Training, connectedTo, Question Bank Management>
+<Memory Techniques Training, partOf, Professional Licensure Exam Prep>
+<Mock Exam Administration, yes, Performance Prediction Models>
+<Parent or Guardian Updates, connectedTo, Graduate School Exam Prep>
+<Parent or Guardian Updates, connectedTo, Practice Test Creation>
+<Performance Prediction Models, connectedTo, end>
+<Personalized Study Plans, connectedTo, Mock Exam Administration>
+<Practice Test Creation, connectedTo, Graduate School Exam Prep>
+<Practice Test Creation, connectedTo, History Topic Mastery>
+<Question Bank Management, connectedTo, College Entrance Exam Prep>
+<Question Bank Management, partOf, Professional Licensure Exam Prep>
+<Reading Comprehension Drills, connectedTo, Score Analysis>
+<Science Concept Review, connectedTo, Student Progress Tracking>
+<Score Analysis, connectedTo, Graduate School Exam Prep>
+<Student Progress Tracking, connectedTo, Certification Exam Prep>
+<Student Progress Tracking, connectedTo, Math Skills Refresher>
+<Student Progress Tracking, connectedTo, Mock Exam Administration>
+<Student Progress Tracking, no, History Topic Mastery>
+<Test_Taking Strategies, connectedTo, Personalized Study Plans>
+<Tutoring Session, connectedTo, Memory Techniques Training>
+<Tutoring Session, partOf, Professional Licensure Exam Prep>
+<start, connectedTo, Graduate School Exam Prep>
+<start, connectedTo, Science Concept Review>
diff --git a/train/mermaid/hard/mermaid_649.txt b/train/mermaid/hard/mermaid_649.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ecdd06feda76b9604a98043f2c1b73cb5995f9a4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_649.txt
@@ -0,0 +1,41 @@
+<Accent Reduction Coaching, develops, Contextual Learning>
+<Adult Language Learning, connectedTo, Grammar Practice>
+<Adult Language Learning, connectedTo, Language Exchange Programs>
+<Adult Language Learning, connectedTo, Listening Comprehension>
+<Adult Language Learning, connectedTo, Pronunciation Drills>
+<Adult Language Learning, connectedTo, Reading Comprehension>
+<Business Language Training, connectedTo, Adult Language Learning>
+<Certification Exam Preparation, personalizes, Language for Specific Purposes>
+<Children's Language Learning, interacts, Adult Language Learning>
+<Children's Language Learning, partOf, Immersion Programs>
+<Contextual Learning, connectedTo, Certification Exam Preparation>
+<Contextual Learning, connectedTo, Language for Specific Purposes>
+<Flashcard Systems, connectedTo, Gamified Learning Activities>
+<Flashcard Systems, partOf, Speech Recognition Technology>
+<Gamified Learning Activities, connectedTo, Accent Reduction Coaching>
+<Gamified Learning Activities, connectedTo, Contextual Learning>
+<Grammar Practice, connectedTo, Language Exchange Programs>
+<Interactive Dialogues, connectedTo, Slang and Idioms Learning>
+<Interactive Dialogues, partOf, Immersion Programs>
+<Language Exchange Programs, connectedTo, Listening Comprehension>
+<Language Exchange Programs, learns, Interactive Dialogues>
+<Language for Specific Purposes, analyzes, Self_Study Modules>
+<Language for Specific Purposes, connectedTo, Business Language Training>
+<Language for Specific Purposes, connectedTo, Language Exchange Programs>
+<Language for Specific Purposes, facilitates, Pronunciation Drills>
+<Personalized Learning Paths, connectedTo, Contextual Learning>
+<Personalized Learning Paths, connectedTo, Language for Specific Purposes>
+<Personalized Learning Paths, connectedTo, Translation Exercises>
+<Pronunciation Drills, connectedTo, Reading Comprehension>
+<Reading Comprehension, connectedTo, Grammar Practice>
+<Self_Study Modules, evaluates, Vocabulary Acquisition>
+<Self_Study Modules, partOf, Speech Recognition Technology>
+<Slang and Idioms Learning, connectedTo, Travel Language Essentials>
+<Slang and Idioms Learning, partOf, Immersion Programs>
+<Translation Exercises, connectedTo, Contextual Learning>
+<Translation Exercises, connectedTo, Video Lessons>
+<Travel Language Essentials, connectedTo, Children's Language Learning>
+<Travel Language Essentials, partOf, Immersion Programs>
+<Video Lessons, connectedTo, Gamified Learning Activities>
+<Vocabulary Acquisition, connectedTo, Flashcard Systems>
+<Vocabulary Acquisition, partOf, Speech Recognition Technology>
diff --git a/train/mermaid/hard/mermaid_650.mmd b/train/mermaid/hard/mermaid_650.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..7442a7a6eac877c596c04451a1d99ff5fa34e229
--- /dev/null
+++ b/train/mermaid/hard/mermaid_650.mmd
@@ -0,0 +1,150 @@
+graph LR
+    N0([start])
+    N1(Native Speaker Interaction)
+    N2(Memory Retention Techniques)
+    N3{Flashcard Systems}
+    N4[(Audio Lessons)]
+    N5[Progress Tracking]
+    N6([Vocabulary Acquisition])
+    N7([Business Language Training])
+    N8[Speech Recognition Technology]
+    N9[[Grammar Practice]]
+    N10[Translation Exercises]
+    N11(Video Lessons)
+    N12[Immersion Programs]
+    N13[[Certification Exam Preparation]]
+    N14([Adult Language Learning])
+    N15{Instructor_Led Classes}
+    N16([Children's Language Learning])
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Role_Playing Scenarios
+        nest0_0(Contextual Learning)
+        nest0_1[Error Correction Feedback]
+        nest0_2(Personalized Learning Paths)
+        nest0_3[/Cultural Immersion/]
+    end
+    subgraph Online Tutoring Sessions
+        nest1_0[Language Exchange Programs]
+        nest1_1[/Gamified Learning Activities/]
+        nest1_2(Accent Reduction Coaching)
+        nest1_3[Writing Exercises]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> |immerses| N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> |tracks| N15
+    N15 --> N16
+    N16 --> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> |sells| nest0_3
+    N11 -.-> nest0_0
+    nest0_3 -.-> N14
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 --> N1
+    N4 -.-> S0
+    S0 --> N15
+    S0 --> N14
+    S0 -.-> N9
+    S0 -.-> N10
+    N13 -.-> S1
+    S1 -.-> N15
+    S1 --> N16
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N3
+    N10 -.-> M1
+    N14 --> M1
+    N7 --> M1
+    M1 -.-> N16
+    style N0 fill:#FBE9E7,stroke:#FF8A65
+    style N1 fill:#FFCDD2,stroke:#F44336
+    style N2 fill:#FBE9E7,stroke:#FF8A65
+    style N3 fill:#FBE9E7,stroke:#FF8A65
+    style N4 fill:#FBE9E7,stroke:#FF8A65
+    style N5 fill:#FBE9E7,stroke:#FF8A65
+    style N6 fill:#FBE9E7,stroke:#FF8A65
+    style N7 fill:#FBE9E7,stroke:#FF8A65
+    style N8 fill:#FFF0CC,stroke:#FFCC80
+    style N9 fill:#FBE9E7,stroke:#FF8A65
+    style N10 fill:#FFF0CC,stroke:#FFCC80
+    style N11 fill:#FFF0CC,stroke:#FFCC80
+    style N12 fill:#FBE9E7,stroke:#FF8A65
+    style N13 fill:#FBE9E7,stroke:#FF8A65
+    style N14 fill:#FFCDD2,stroke:#F44336
+    style N15 fill:#FFF0CC,stroke:#FFCC80
+    style N16 fill:#FFF0CC,stroke:#FFCC80
+    style N17 fill:#FFCDD2,stroke:#F44336
+    style S0 fill:#FFF0CC,stroke:#FFCC80
+    style S1 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#FFF0CC,stroke:#FFCC80
+    style M1 fill:#FFF0CC,stroke:#FFCC80
+    style nest0_0 fill:#FFF0CC,stroke:#FFCC80
+    style nest0_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_2 fill:#FFCDD2,stroke:#F44336
+    style nest0_3 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_0 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_2 fill:#FBE9E7,stroke:#FF8A65
+    style nest1_3 fill:#FFCDD2,stroke:#F44336
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#F44336,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_650.txt b/train/mermaid/hard/mermaid_650.txt
new file mode 100644
index 0000000000000000000000000000000000000000..689b3bdcb31af59367726fbe2a01a912a33859b8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_650.txt
@@ -0,0 +1,46 @@
+<Accent Reduction Coaching, connectedTo, Writing Exercises>
+<Accent Reduction Coaching, partOf, Online Tutoring Sessions>
+<Adult Language Learning, connectedTo, Children's Language Learning>
+<Adult Language Learning, tracks, Instructor_Led Classes>
+<Audio Lessons, connectedTo, Adult Language Learning>
+<Audio Lessons, connectedTo, Grammar Practice>
+<Audio Lessons, connectedTo, Instructor_Led Classes>
+<Audio Lessons, connectedTo, Progress Tracking>
+<Audio Lessons, connectedTo, Translation Exercises>
+<Business Language Training, connectedTo, Children's Language Learning>
+<Business Language Training, immerses, Speech Recognition Technology>
+<Certification Exam Preparation, connectedTo, Adult Language Learning>
+<Certification Exam Preparation, connectedTo, Children's Language Learning>
+<Certification Exam Preparation, connectedTo, Instructor_Led Classes>
+<Children's Language Learning, connectedTo, end>
+<Contextual Learning, connectedTo, Error Correction Feedback>
+<Contextual Learning, partOf, Role_Playing Scenarios>
+<Cultural Immersion, connectedTo, Adult Language Learning>
+<Cultural Immersion, partOf, Role_Playing Scenarios>
+<Error Correction Feedback, connectedTo, Personalized Learning Paths>
+<Error Correction Feedback, partOf, Role_Playing Scenarios>
+<Flashcard Systems, connectedTo, Audio Lessons>
+<Gamified Learning Activities, connectedTo, Accent Reduction Coaching>
+<Gamified Learning Activities, partOf, Online Tutoring Sessions>
+<Grammar Practice, connectedTo, Language Exchange Programs>
+<Grammar Practice, connectedTo, Translation Exercises>
+<Immersion Programs, connectedTo, Certification Exam Preparation>
+<Instructor_Led Classes, connectedTo, Children's Language Learning>
+<Language Exchange Programs, connectedTo, Gamified Learning Activities>
+<Language Exchange Programs, partOf, Online Tutoring Sessions>
+<Memory Retention Techniques, connectedTo, Flashcard Systems>
+<Native Speaker Interaction, connectedTo, Flashcard Systems>
+<Native Speaker Interaction, connectedTo, Memory Retention Techniques>
+<Personalized Learning Paths, partOf, Role_Playing Scenarios>
+<Personalized Learning Paths, sells, Cultural Immersion>
+<Progress Tracking, connectedTo, Vocabulary Acquisition>
+<Speech Recognition Technology, connectedTo, Grammar Practice>
+<Translation Exercises, connectedTo, Children's Language Learning>
+<Translation Exercises, connectedTo, Video Lessons>
+<Video Lessons, connectedTo, Contextual Learning>
+<Video Lessons, connectedTo, Immersion Programs>
+<Vocabulary Acquisition, connectedTo, Business Language Training>
+<Writing Exercises, connectedTo, Native Speaker Interaction>
+<Writing Exercises, partOf, Online Tutoring Sessions>
+<start, connectedTo, Flashcard Systems>
+<start, connectedTo, Native Speaker Interaction>
diff --git a/train/mermaid/hard/mermaid_651.mmd b/train/mermaid/hard/mermaid_651.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..251b3b2effd3aeee7b5c8bb1e432c13753336a40
--- /dev/null
+++ b/train/mermaid/hard/mermaid_651.mmd
@@ -0,0 +1,130 @@
+graph LR
+    N0([start])
+    N1(Language for Specific Purposes)
+    N2(Instructor_Led Classes)
+    N3[[Reading Comprehension]]
+    N4[/Sentence Construction Practice/]
+    N5{Language Exchange Programs}
+    N6(AI_Powered Language Tutors)
+    N7(Curriculum Customization)
+    N8[(Certification Exam Preparation)]
+    N9([Adult Language Learning])
+    N10(Language Assessment Tests)
+    N11{Accent Reduction Coaching}
+    N12([Online Tutoring Sessions])
+    N13([Speaking Practice])
+    N14(Native Speaker Interaction)
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Interactive Dialogues
+        nest0_0[Role_Playing Scenarios]
+        nest0_1[[Gamified Learning Activities]]
+        nest0_2{Personalized Learning Paths}
+    end
+    subgraph Self_Study Modules
+        nest1_0{Video Lessons}
+        nest1_1(Speech Recognition Technology)
+        nest1_2(Contextual Learning)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> |communicates| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> |personalizes| N14
+    N14 --> N15
+    nest0_0 --> |immerses| nest0_1
+    nest0_1 -.-> nest0_2
+    N6 -.-> nest0_0
+    nest0_2 -.-> N3
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N4 --> nest1_0
+    nest1_2 --> N9
+    N5 --> S0
+    S0 --> N10
+    S0 -.-> N14
+    S0 --> N8
+    N1 -.-> S1
+    S1 -.-> N7
+    S1 -.-> N9
+    N0 -.-> M0
+    N11 -.-> |analyzes| M0
+    M0 --> N13
+    N2 --> M2
+    N3 --> M2
+    M2 --> N7
+    style N0 fill:#C8E6C9,stroke:#4CAF50
+    style N1 fill:#C8E6C9,stroke:#4CAF50
+    style N2 fill:#C8E6C9,stroke:#4CAF50
+    style N3 fill:#EBEBEB,stroke:#E0E0E0
+    style N4 fill:#E0F2F1,stroke:#26A69A
+    style N5 fill:#EBEBEB,stroke:#E0E0E0
+    style N6 fill:#EBEBEB,stroke:#E0E0E0
+    style N7 fill:#E0F2F1,stroke:#26A69A
+    style N8 fill:#EBEBEB,stroke:#E0E0E0
+    style N9 fill:#E0F2F1,stroke:#26A69A
+    style N10 fill:#C8E6C9,stroke:#4CAF50
+    style N11 fill:#E0F2F1,stroke:#26A69A
+    style N12 fill:#C8E6C9,stroke:#4CAF50
+    style N13 fill:#E0F2F1,stroke:#26A69A
+    style N14 fill:#EBEBEB,stroke:#E0E0E0
+    style N15 fill:#E0F2F1,stroke:#26A69A
+    style S0 fill:#E0F2F1,stroke:#26A69A
+    style S1 fill:#EBEBEB,stroke:#E0E0E0
+    style M0 fill:#EBEBEB,stroke:#E0E0E0
+    style M2 fill:#E0F2F1,stroke:#26A69A
+    style nest0_0 fill:#E0F2F1,stroke:#26A69A
+    style nest0_1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_2 fill:#E0F2F1,stroke:#26A69A
+    style nest1_0 fill:#EBEBEB,stroke:#E0E0E0
+    style nest1_1 fill:#E0F2F1,stroke:#26A69A
+    style nest1_2 fill:#E0F2F1,stroke:#26A69A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#4CAF50,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_651.txt b/train/mermaid/hard/mermaid_651.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9310e31638bf8aa7ffca73d27b665979aae80d29
--- /dev/null
+++ b/train/mermaid/hard/mermaid_651.txt
@@ -0,0 +1,38 @@
+<AI_Powered Language Tutors, connectedTo, Curriculum Customization>
+<AI_Powered Language Tutors, connectedTo, Role_Playing Scenarios>
+<Accent Reduction Coaching, analyzes, Speaking Practice>
+<Accent Reduction Coaching, connectedTo, Online Tutoring Sessions>
+<Adult Language Learning, connectedTo, Language Assessment Tests>
+<Certification Exam Preparation, connectedTo, Adult Language Learning>
+<Contextual Learning, connectedTo, Adult Language Learning>
+<Contextual Learning, partOf, Self_Study Modules>
+<Curriculum Customization, connectedTo, Certification Exam Preparation>
+<Gamified Learning Activities, connectedTo, Personalized Learning Paths>
+<Gamified Learning Activities, partOf, Interactive Dialogues>
+<Instructor_Led Classes, communicates, Reading Comprehension>
+<Instructor_Led Classes, connectedTo, Curriculum Customization>
+<Language Assessment Tests, connectedTo, Accent Reduction Coaching>
+<Language Exchange Programs, connectedTo, AI_Powered Language Tutors>
+<Language Exchange Programs, connectedTo, Certification Exam Preparation>
+<Language Exchange Programs, connectedTo, Language Assessment Tests>
+<Language Exchange Programs, connectedTo, Native Speaker Interaction>
+<Language for Specific Purposes, connectedTo, Adult Language Learning>
+<Language for Specific Purposes, connectedTo, Curriculum Customization>
+<Language for Specific Purposes, connectedTo, Instructor_Led Classes>
+<Native Speaker Interaction, connectedTo, end>
+<Online Tutoring Sessions, connectedTo, Speaking Practice>
+<Personalized Learning Paths, connectedTo, Reading Comprehension>
+<Personalized Learning Paths, partOf, Interactive Dialogues>
+<Reading Comprehension, connectedTo, Curriculum Customization>
+<Reading Comprehension, connectedTo, Sentence Construction Practice>
+<Role_Playing Scenarios, immerses, Gamified Learning Activities>
+<Role_Playing Scenarios, partOf, Interactive Dialogues>
+<Sentence Construction Practice, connectedTo, Language Exchange Programs>
+<Sentence Construction Practice, connectedTo, Video Lessons>
+<Speaking Practice, personalizes, Native Speaker Interaction>
+<Speech Recognition Technology, connectedTo, Contextual Learning>
+<Speech Recognition Technology, partOf, Self_Study Modules>
+<Video Lessons, connectedTo, Speech Recognition Technology>
+<Video Lessons, partOf, Self_Study Modules>
+<start, connectedTo, Language for Specific Purposes>
+<start, connectedTo, Speaking Practice>
diff --git a/train/mermaid/hard/mermaid_652.mmd b/train/mermaid/hard/mermaid_652.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8c28aef2ac81802ef0421667404228be162f9aca
--- /dev/null
+++ b/train/mermaid/hard/mermaid_652.mmd
@@ -0,0 +1,122 @@
+graph TD
+    N0([Online Tutoring Sessions])
+    N1[/Audio Lessons/]
+    N2[Certification Exam Preparation]
+    N3[(Grammar Practice)]
+    N4[(Flashcard Systems)]
+    N5[Progress Tracking]
+    N6(Gamified Learning Activities)
+    N7[/Reading Comprehension/]
+    N8[[Adult Language Learning]]
+    N9[[Immersion Programs]]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Contextual Learning
+        nest0_0[Accent Reduction Coaching]
+        nest0_1([Virtual Reality Language Environments])
+        nest0_2[Translation Exercises]
+        nest0_3(Pronunciation Drills)
+    end
+    subgraph Error Correction Feedback
+        nest1_0{Listening Comprehension}
+        nest1_1(Cultural Immersion)
+        nest1_2[Interactive Dialogues]
+    end
+    N0 --> |engages| N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> |improves| N7
+    N7 -.-> N8
+    N8 --> N9
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N4 --> nest0_0
+    nest0_3 --> N9
+    nest1_0 -.-> |evaluates| nest1_1
+    nest1_1 -.-> nest1_2
+    N7 --> nest1_0
+    nest1_2 --> N8
+    N0 --> S0
+    S0 --> N2
+    S0 -.-> N8
+    N6 --> S1
+    S1 --> N9
+    S1 -.-> N8
+    N3 --> M0
+    N4 -.-> M0
+    N1 -.-> M0
+    M0 -.-> N9
+    N0 --> M1
+    N1 -.-> M1
+    N6 --> M1
+    M1 -.-> N8
+    N6 -.-> M2
+    N0 --> M2
+    N7 --> M2
+    M2 -.-> N9
+    style N0 fill:#FFDAB9,stroke:#FFC085
+    style N1 fill:#FFDAB9,stroke:#FFC085
+    style N2 fill:#E8F0EA,stroke:#92C79A
+    style N3 fill:#E8F0EA,stroke:#92C79A
+    style N4 fill:#FFDAB9,stroke:#FFC085
+    style N5 fill:#E8F0EA,stroke:#92C79A
+    style N6 fill:#FFDAB9,stroke:#FFC085
+    style N7 fill:#E8F0EA,stroke:#92C79A
+    style N8 fill:#E8F0EA,stroke:#92C79A
+    style N9 fill:#FFDAB9,stroke:#FFC085
+    style S0 fill:#FFF6D9,stroke:#FFCC7A
+    style S1 fill:#FFDAB9,stroke:#FFC085
+    style M0 fill:#FFF6D9,stroke:#FFCC7A
+    style M1 fill:#FFF6D9,stroke:#FFCC7A
+    style M2 fill:#FFF6D9,stroke:#FFCC7A
+    style nest0_0 fill:#E8F0EA,stroke:#92C79A
+    style nest0_1 fill:#FFDAB9,stroke:#FFC085
+    style nest0_2 fill:#FFDAB9,stroke:#FFC085
+    style nest0_3 fill:#E8F0EA,stroke:#92C79A
+    style nest1_0 fill:#E8F0EA,stroke:#92C79A
+    style nest1_1 fill:#FFDAB9,stroke:#FFC085
+    style nest1_2 fill:#FFF6D9,stroke:#FFCC7A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFCC7A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_653.txt b/train/mermaid/hard/mermaid_653.txt
new file mode 100644
index 0000000000000000000000000000000000000000..337956484cd229399ec0253c12bf592487392e14
--- /dev/null
+++ b/train/mermaid/hard/mermaid_653.txt
@@ -0,0 +1,42 @@
+<AI_Powered Language Tutors, connectedTo, Language Assessment Tests>
+<AI_Powered Language Tutors, partOf, Listening Comprehension>
+<Adult Language Learning, connectedTo, Travel Language Essentials>
+<Adult Language Learning, partOf, Vocabulary Acquisition>
+<Business Language Training, connectedTo, Grammar Practice>
+<Business Language Training, connectedTo, Interactive Dialogues>
+<Business Language Training, connectedTo, Online Tutoring Sessions>
+<Cultural Immersion, connectedTo, Gamified Learning Activities>
+<Cultural Immersion, partOf, Vocabulary Acquisition>
+<Curriculum Customization, connectedTo, Error Correction Feedback>
+<Curriculum Customization, connectedTo, Online Tutoring Sessions>
+<Error Correction Feedback, connectedTo, Business Language Training>
+<Error Correction Feedback, connectedTo, Grammar Practice>
+<Flashcard Systems, facilitates, Grammar Practice>
+<Gamified Learning Activities, connectedTo, Adult Language Learning>
+<Gamified Learning Activities, partOf, Vocabulary Acquisition>
+<Interactive Dialogues, connectedTo, AI_Powered Language Tutors>
+<Interactive Dialogues, connectedTo, Flashcard Systems>
+<Interactive Dialogues, connectedTo, Online Tutoring Sessions>
+<Interactive Dialogues, connectedTo, Personalized Learning Paths>
+<Interactive Dialogues, connectedTo, Slang and Idioms Learning>
+<Interactive Dialogues, connectedTo, Video Lessons>
+<Interactive Dialogues, connectedTo, Virtual Reality Language Environments>
+<Language Assessment Tests, connectedTo, Memory Retention Techniques>
+<Language Assessment Tests, partOf, Listening Comprehension>
+<Memory Retention Techniques, connectedTo, Native Speaker Interaction>
+<Memory Retention Techniques, partOf, Listening Comprehension>
+<Native Speaker Interaction, connectedTo, Grammar Practice>
+<Native Speaker Interaction, partOf, Listening Comprehension>
+<Online Tutoring Sessions, connectedTo, Grammar Practice>
+<Online Tutoring Sessions, connectedTo, Slang and Idioms Learning>
+<Online Tutoring Sessions, connectedTo, Virtual Reality Language Environments>
+<Online Tutoring Sessions, teaches, Flashcard Systems>
+<Personalized Learning Paths, connectedTo, Cultural Immersion>
+<Personalized Learning Paths, connectedTo, Grammar Practice>
+<Personalized Learning Paths, connectedTo, Online Tutoring Sessions>
+<Slang and Idioms Learning, tracks, Flashcard Systems>
+<Travel Language Essentials, connectedTo, Personalized Learning Paths>
+<Video Lessons, connectedTo, Grammar Practice>
+<Video Lessons, connectedTo, Online Tutoring Sessions>
+<Video Lessons, connectedTo, Travel Language Essentials>
+<Virtual Reality Language Environments, connectedTo, Slang and Idioms Learning>
diff --git a/train/mermaid/hard/mermaid_655.mmd b/train/mermaid/hard/mermaid_655.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8755440840416080b42d4c31ebd4968f15b8103a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_655.mmd
@@ -0,0 +1,87 @@
+graph LR
+    N0([start])
+    N1[Children's Language Learning]
+    N2(Travel Language Essentials)
+    N3[/Language for Specific Purposes/]
+    N4[/Listening Comprehension/]
+    N5[Grammar Practice]
+    N6(Memory Retention Techniques)
+    N7(Business Language Training)
+    N8{Adult Language Learning}
+    N9[[Reading Comprehension]]
+    N10[Video Lessons]
+    S0(( ))
+    S1(( ))
+    M2(( ))
+    subgraph Language Exchange Programs
+        nest0_0[(Pronunciation Drills)]
+        nest0_1(Speech Recognition Technology)
+    end
+    subgraph Progress Tracking
+        nest1_0([Instructor_Led Classes])
+        nest1_1(Flashcard Systems)
+        nest1_2[[Error Correction Feedback]]
+        nest1_3[/AI_Powered Language Tutors/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> |yes| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> |no| N10
+    nest0_0 --> nest0_1
+    N6 --> nest0_0
+    nest0_1 -.-> |yes| N3
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N8 --> nest1_0
+    nest1_3 --> N8
+    N4 -.-> S0
+    S0 -.-> N10
+    S0 --> |no| N9
+    S0 --> N8
+    N3 -.-> S1
+    S1 --> N7
+    S1 -.-> N8
+    N1 -.-> M2
+    N3 --> M2
+    N2 -.-> M2
+    M2 --> N5
+    style S0 fill:#FFFAE0,stroke:#FFE470
+    style S1 fill:#F0F4C3,stroke:#AED581
+    style M2 fill:#F0F4C3,stroke:#AED581
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#73C6BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_655.txt b/train/mermaid/hard/mermaid_655.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cd3ce8b9dbaaca6b77d03ff5b0d1e60948b980fc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_655.txt
@@ -0,0 +1,32 @@
+<AI_Powered Language Tutors, connectedTo, Adult Language Learning>
+<AI_Powered Language Tutors, partOf, Progress Tracking>
+<Adult Language Learning, connectedTo, Instructor_Led Classes>
+<Adult Language Learning, connectedTo, Reading Comprehension>
+<Business Language Training, connectedTo, Adult Language Learning>
+<Children's Language Learning, connectedTo, Grammar Practice>
+<Children's Language Learning, connectedTo, Travel Language Essentials>
+<Error Correction Feedback, connectedTo, AI_Powered Language Tutors>
+<Error Correction Feedback, partOf, Progress Tracking>
+<Flashcard Systems, connectedTo, Error Correction Feedback>
+<Flashcard Systems, partOf, Progress Tracking>
+<Grammar Practice, connectedTo, Memory Retention Techniques>
+<Instructor_Led Classes, connectedTo, Flashcard Systems>
+<Instructor_Led Classes, partOf, Progress Tracking>
+<Language for Specific Purposes, connectedTo, Adult Language Learning>
+<Language for Specific Purposes, connectedTo, Business Language Training>
+<Language for Specific Purposes, connectedTo, Grammar Practice>
+<Language for Specific Purposes, connectedTo, Listening Comprehension>
+<Listening Comprehension, connectedTo, Adult Language Learning>
+<Listening Comprehension, connectedTo, Grammar Practice>
+<Listening Comprehension, connectedTo, Video Lessons>
+<Listening Comprehension, no, Reading Comprehension>
+<Memory Retention Techniques, connectedTo, Pronunciation Drills>
+<Memory Retention Techniques, yes, Business Language Training>
+<Pronunciation Drills, connectedTo, Speech Recognition Technology>
+<Pronunciation Drills, partOf, Language Exchange Programs>
+<Reading Comprehension, no, Video Lessons>
+<Speech Recognition Technology, partOf, Language Exchange Programs>
+<Speech Recognition Technology, yes, Language for Specific Purposes>
+<Travel Language Essentials, connectedTo, Grammar Practice>
+<Travel Language Essentials, connectedTo, Language for Specific Purposes>
+<start, connectedTo, Children's Language Learning>
diff --git a/train/mermaid/hard/mermaid_656.mmd b/train/mermaid/hard/mermaid_656.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3ae0d172724029b07c2980bc14d5d623e386bacc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_656.mmd
@@ -0,0 +1,110 @@
+graph RL
+    N0([start])
+    N1[Self_Study Modules]
+    N2(Interactive Dialogues)
+    N3{Listening Comprehension}
+    N4[[Sentence Construction Practice]]
+    N5[[Language Assessment Tests]]
+    N6(Contextual Learning)
+    N7[Children's Language Learning]
+    N8[Memory Retention Techniques]
+    N9[/Gamified Learning Activities/]
+    N10[[Business Language Training]]
+    S0(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Language for Specific Purposes
+        nest0_0[Travel Language Essentials]
+        nest0_1[Language Exchange Programs]
+        nest0_2[/Flashcard Systems/]
+        nest0_3{Role_Playing Scenarios}
+    end
+    subgraph Speaking Practice
+        nest1_0(Translation Exercises)
+        nest1_1[Error Correction Feedback]
+        nest1_2[Virtual Reality Language Environments]
+        nest1_3[/Slang and Idioms Learning/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> |publishes| nest0_2
+    nest0_2 --> nest0_3
+    N3 -.-> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N1 --> nest1_0
+    nest1_3 -.-> N6
+    N7 -.-> S0
+    S0 -.-> N9
+    S0 -.-> N10
+    N1 -.-> M0
+    N2 --> M0
+    M0 -.-> N4
+    N1 -.-> M1
+    N2 -.-> M1
+    N4 -.-> M1
+    M1 -.-> N6
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#F9FBE7,stroke:#C0CA33
+    style N2 fill:#DDCEDD,stroke:#AF56A6
+    style N3 fill:#CADEDE,stroke:#94C0C0
+    style N4 fill:#CADEDE,stroke:#94C0C0
+    style N5 fill:#F9FBE7,stroke:#C0CA33
+    style N6 fill:#F9FBE7,stroke:#C0CA33
+    style N7 fill:#F9FBE7,stroke:#C0CA33
+    style N8 fill:#DDCEDD,stroke:#AF56A6
+    style N9 fill:#F9FBE7,stroke:#C0CA33
+    style N10 fill:#CADEDE,stroke:#94C0C0
+    style S0 fill:#DDCEDD,stroke:#AF56A6
+    style M0 fill:#DDCEDD,stroke:#AF56A6
+    style M1 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_1 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_2 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_3 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#CADEDE,stroke:#94C0C0
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    style nest1_2 fill:#F9FBE7,stroke:#C0CA33
+    style nest1_3 fill:#DDCEDD,stroke:#AF56A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C0CA33,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_656.txt b/train/mermaid/hard/mermaid_656.txt
new file mode 100644
index 0000000000000000000000000000000000000000..97fc579603a268341ea151d15bc3702ff4aec1e9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_656.txt
@@ -0,0 +1,35 @@
+<Children's Language Learning, connectedTo, Business Language Training>
+<Children's Language Learning, connectedTo, Gamified Learning Activities>
+<Children's Language Learning, connectedTo, Memory Retention Techniques>
+<Contextual Learning, connectedTo, Children's Language Learning>
+<Error Correction Feedback, connectedTo, Virtual Reality Language Environments>
+<Error Correction Feedback, partOf, Speaking Practice>
+<Flashcard Systems, connectedTo, Role_Playing Scenarios>
+<Flashcard Systems, partOf, Language for Specific Purposes>
+<Gamified Learning Activities, connectedTo, Business Language Training>
+<Interactive Dialogues, connectedTo, Contextual Learning>
+<Interactive Dialogues, connectedTo, Listening Comprehension>
+<Interactive Dialogues, connectedTo, Sentence Construction Practice>
+<Language Assessment Tests, connectedTo, Contextual Learning>
+<Language Exchange Programs, partOf, Language for Specific Purposes>
+<Language Exchange Programs, publishes, Flashcard Systems>
+<Listening Comprehension, connectedTo, Sentence Construction Practice>
+<Listening Comprehension, connectedTo, Travel Language Essentials>
+<Memory Retention Techniques, connectedTo, Gamified Learning Activities>
+<Role_Playing Scenarios, connectedTo, Sentence Construction Practice>
+<Role_Playing Scenarios, partOf, Language for Specific Purposes>
+<Self_Study Modules, connectedTo, Contextual Learning>
+<Self_Study Modules, connectedTo, Interactive Dialogues>
+<Self_Study Modules, connectedTo, Sentence Construction Practice>
+<Self_Study Modules, connectedTo, Translation Exercises>
+<Sentence Construction Practice, connectedTo, Contextual Learning>
+<Sentence Construction Practice, connectedTo, Language Assessment Tests>
+<Slang and Idioms Learning, connectedTo, Contextual Learning>
+<Slang and Idioms Learning, partOf, Speaking Practice>
+<Translation Exercises, connectedTo, Error Correction Feedback>
+<Translation Exercises, partOf, Speaking Practice>
+<Travel Language Essentials, connectedTo, Language Exchange Programs>
+<Travel Language Essentials, partOf, Language for Specific Purposes>
+<Virtual Reality Language Environments, connectedTo, Slang and Idioms Learning>
+<Virtual Reality Language Environments, partOf, Speaking Practice>
+<start, connectedTo, Self_Study Modules>
diff --git a/train/mermaid/hard/mermaid_659.mmd b/train/mermaid/hard/mermaid_659.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..50e1c06cc3034b2055471d64f7149549f3b32b7c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_659.mmd
@@ -0,0 +1,156 @@
+graph LR
+    N0([start])
+    N1(Anxiety Management)
+    N2[/Peer Support Programs/]
+    N3[Child & Adolescent Therapy]
+    N4[Eating Disorder Treatment]
+    N5[Emotional Regulation Training]
+    N6[/Medication Management/]
+    N7(Inpatient Treatment Coordination)
+    N8(Mental Health Screening)
+    N9[(Crisis Intervention)]
+    N10[(Mental Health Education)]
+    N11[/Therapy Session/]
+    N12[[Stress Reduction Techniques]]
+    N13[Workplace Mental Health Programs]
+    N14[(Relapse Prevention)]
+    N15[Dialectical Behavior Therapy]
+    N16[Telehealth Counseling]
+    N17([Post_Traumatic Stress Disorder Support])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Depression Treatment
+        nest0_0[Music Therapy]
+        nest0_1{Coping Skill Development}
+        nest0_2(Bipolar Disorder Management)
+    end
+    subgraph Support Group Facilitation
+        nest1_0([Suicide Prevention])
+        nest1_1[/Substance Abuse Counseling/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> |relieves| N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> |assesses| N15
+    N15 -.-> N16
+    N16 --> |facilitates| N17
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N9 --> |licenses| nest0_0
+    nest0_2 --> N11
+    nest1_0 --> nest1_1
+    N1 -.-> |listens| nest1_0
+    nest1_1 -.-> N6
+    N4 --> S0
+    S0 -.-> N15
+    S0 --> N13
+    S0 --> N11
+    N12 -.-> S1
+    S1 -.-> N14
+    S1 -.-> N17
+    S1 --> N16
+    N1 -.-> S2
+    S2 --> |tracks| N12
+    S2 -.-> N14
+    N6 -.-> M0
+    N4 --> M0
+    M0 --> N8
+    N0 --> |therapies| M1
+    N2 -.-> M1
+    N11 -.-> M1
+    M1 -.-> N17
+    N1 --> M2
+    N2 --> M2
+    N3 -.-> M2
+    M2 -.-> N7
+    style N0 fill:#FCE4EC,stroke:#E91E63
+    style N1 fill:#EDE7F6,stroke:#7E57C2
+    style N2 fill:#FCE4EC,stroke:#E91E63
+    style N3 fill:#FFDCD6,stroke:#FFB2A5
+    style N4 fill:#FCE4EC,stroke:#E91E63
+    style N5 fill:#FFDCD6,stroke:#FFB2A5
+    style N6 fill:#FFDCD6,stroke:#FFB2A5
+    style N7 fill:#EDE7F6,stroke:#7E57C2
+    style N8 fill:#FCE4EC,stroke:#E91E63
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#FCE4EC,stroke:#E91E63
+    style N11 fill:#FFDCD6,stroke:#FFB2A5
+    style N12 fill:#FFDCD6,stroke:#FFB2A5
+    style N13 fill:#FCE4EC,stroke:#E91E63
+    style N14 fill:#EDE7F6,stroke:#7E57C2
+    style N15 fill:#EDE7F6,stroke:#7E57C2
+    style N16 fill:#EDE7F6,stroke:#7E57C2
+    style N17 fill:#EDE7F6,stroke:#7E57C2
+    style S0 fill:#FFDCD6,stroke:#FFB2A5
+    style S1 fill:#EDE7F6,stroke:#7E57C2
+    style S2 fill:#FCE4EC,stroke:#E91E63
+    style M0 fill:#FCE4EC,stroke:#E91E63
+    style M1 fill:#FCE4EC,stroke:#E91E63
+    style M2 fill:#FCE4EC,stroke:#E91E63
+    style nest0_0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_1 fill:#EDE7F6,stroke:#7E57C2
+    style nest0_2 fill:#FFDCD6,stroke:#FFB2A5
+    style nest1_0 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_1 fill:#EDE7F6,stroke:#7E57C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_66.mmd b/train/mermaid/hard/mermaid_66.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1ea362d7062ad83d3b6710f846061deaffd6026f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_66.mmd
@@ -0,0 +1,144 @@
+graph BT
+    N0([Cargo Tracking])
+    N1[Route Optimization Software]
+    N2(Return Logistics)
+    N3[Customs Declaration]
+    N4[[Container Loading]]
+    N5(Last_mile Dispatch)
+    N6(Route Assignment)
+    N7[[Demand Forecasting Integration]]
+    N8[Global Trade Compliance]
+    N9[Sorting Center]
+    N10(Barcode Scanning)
+    N11[[Deconsolidation]]
+    N12(Order Picking)
+    N13[Packing Process]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Ocean Freight Management
+        nest0_0([Hub Transfer])
+        nest0_1[[Customs Clearance]]
+        nest0_2[/Package Labeling/]
+    end
+    subgraph Air Cargo Handling
+        nest1_0[(Hazardous Material Transport)]
+        nest1_1[(Supply Chain Visibility)]
+    end
+    N0 --> N1
+    N1 --> |integrates| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> |sorts| N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N12 --> nest0_0
+    nest0_2 --> N6
+    nest1_0 -.-> nest1_1
+    N8 -.-> nest1_0
+    nest1_1 -.-> N7
+    N8 -.-> S0
+    S0 -.-> N10
+    S0 -.-> |tracks| N13
+    S0 --> N11
+    N11 --> S1
+    S1 --> |receives| N13
+    S1 --> |manages| N14
+    N9 -.-> S2
+    S2 -.-> N11
+    S2 --> |weighs| N13
+    S2 --> N12
+    N0 --> M0
+    N1 -.-> M0
+    N5 --> |delivers| M0
+    M0 -.-> N9
+    N1 --> M1
+    N3 --> M1
+    N0 -.-> M1
+    M1 -.-> N5
+    N1 --> M2
+    N0 -.-> M2
+    M2 -.-> N10
+    style N0 fill:#F5F5F5,stroke:#BDBDBD
+    style N1 fill:#DFE7EB,stroke:#B0C5CD
+    style N2 fill:#E8EAF6,stroke:#5C6BC0
+    style N3 fill:#F5F5F5,stroke:#BDBDBD
+    style N4 fill:#E8EAF6,stroke:#5C6BC0
+    style N5 fill:#F5F5F5,stroke:#BDBDBD
+    style N6 fill:#F5F5F5,stroke:#BDBDBD
+    style N7 fill:#E8EAF6,stroke:#5C6BC0
+    style N8 fill:#E8EAF6,stroke:#5C6BC0
+    style N9 fill:#F5F5F5,stroke:#BDBDBD
+    style N10 fill:#DFE7EB,stroke:#B0C5CD
+    style N11 fill:#E8EAF6,stroke:#5C6BC0
+    style N12 fill:#DFE7EB,stroke:#B0C5CD
+    style N13 fill:#E8EAF6,stroke:#5C6BC0
+    style N14 fill:#F5F5F5,stroke:#BDBDBD
+    style S0 fill:#DFE7EB,stroke:#B0C5CD
+    style S1 fill:#DFE7EB,stroke:#B0C5CD
+    style S2 fill:#F5F5F5,stroke:#BDBDBD
+    style M0 fill:#F5F5F5,stroke:#BDBDBD
+    style M1 fill:#F5F5F5,stroke:#BDBDBD
+    style M2 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_1 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_2 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_0 fill:#DFE7EB,stroke:#B0C5CD
+    style nest1_1 fill:#F5F5F5,stroke:#BDBDBD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_660.txt b/train/mermaid/hard/mermaid_660.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f873f26b087184a9bea8ac8ed63c1b6fe5244515
--- /dev/null
+++ b/train/mermaid/hard/mermaid_660.txt
@@ -0,0 +1,39 @@
+<Advocacy for Mental Health, connectedTo, Diagnosis and Assessment>
+<Advocacy for Mental Health, connectedTo, Group Therapy>
+<Advocacy for Mental Health, connectedTo, end>
+<Anxiety Management, connectedTo, Music Therapy>
+<Anxiety Management, partOf, Peer Support Programs>
+<Coping Skill Development, connectedTo, Depression Treatment>
+<Counseling Services, connectedTo, Telehealth Counseling>
+<Depression Treatment, connectedTo, Outpatient Program Management>
+<Depression Treatment, connectedTo, Suicide Prevention>
+<Diagnosis and Assessment, connectedTo, Group Therapy>
+<Diagnosis and Assessment, connectedTo, Relapse Prevention>
+<Diagnosis and Assessment, connectedTo, Treatment Plan Development>
+<Diagnosis and Assessment, yes, Emotional Regulation Training>
+<Digital Mental Health Tools, connectedTo, Eating Disorder Treatment>
+<Digital Mental Health Tools, connectedTo, end>
+<Eating Disorder Treatment, connectedTo, Anxiety Management>
+<Eating Disorder Treatment, connectedTo, Relapse Prevention>
+<Emotional Regulation Training, connectedTo, Counseling Services>
+<Grief Counseling, connectedTo, Group Therapy>
+<Grief Counseling, partOf, Psychiatric Evaluation>
+<Group Therapy, connectedTo, Emotional Regulation Training>
+<Group Therapy, connectedTo, end>
+<Inpatient Treatment Coordination, connectedTo, Grief Counseling>
+<Inpatient Treatment Coordination, partOf, Psychiatric Evaluation>
+<Mental Health Education, connectedTo, Relapse Prevention>
+<Mental Health Education, partOf, Peer Support Programs>
+<Mindfulness Practice, connectedTo, Advocacy for Mental Health>
+<Music Therapy, connectedTo, Mental Health Education>
+<Music Therapy, partOf, Peer Support Programs>
+<Outpatient Program Management, connectedTo, Inpatient Treatment Coordination>
+<Outpatient Program Management, partOf, Psychiatric Evaluation>
+<Relapse Prevention, connectedTo, Treatment Plan Development>
+<Suicide Prevention, connectedTo, Digital Mental Health Tools>
+<Telehealth Counseling, connectedTo, Coping Skill Development>
+<Treatment Plan Development, connectedTo, end>
+<start, connectedTo, Emotional Regulation Training>
+<start, connectedTo, Group Therapy>
+<start, connectedTo, Mindfulness Practice>
+<start, connectedTo, Treatment Plan Development>
diff --git a/train/mermaid/hard/mermaid_661.mmd b/train/mermaid/hard/mermaid_661.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4fe9d7fa3092992933500410701525c80d91cfab
--- /dev/null
+++ b/train/mermaid/hard/mermaid_661.mmd
@@ -0,0 +1,128 @@
+graph BT
+    N0([Grief Counseling])
+    N1[(Digital Mental Health Tools)]
+    N2(Music Therapy)
+    N3([Eating Disorder Treatment])
+    N4[Diagnosis and Assessment]
+    N5{Family Therapy}
+    N6(Peer Support Programs)
+    N7[(Anxiety Management)]
+    N8(Crisis Intervention)
+    N9(Treatment Plan Development)
+    N10[Dialectical Behavior Therapy]
+    N11(Post_Traumatic Stress Disorder Support)
+    N12{Inpatient Treatment Coordination}
+    N13(Therapy Session)
+    N14([Coping Skill Development])
+    S0(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Recreational Therapy
+        nest0_0(Counseling Services)
+        nest0_1(Support Group Facilitation)
+    end
+    subgraph Mental Health Education
+        nest1_0[(Outpatient Program Management)]
+        nest1_1(Mindfulness Practice)
+        nest1_2[Depression Treatment]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |listens| N4
+    N4 --> N5
+    N5 --> |complies| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    N4 --> |coordinates| nest0_0
+    nest0_1 -.-> |audits| N4
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N1 --> nest1_0
+    nest1_2 -.-> N4
+    N11 --> S0
+    S0 -.-> N14
+    S0 --> N13
+    N4 --> S2
+    S2 --> N6
+    S2 --> N12
+    S2 --> N7
+    S2 -.-> N10
+    N5 -.-> M1
+    N8 --> M1
+    N7 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N11
+    N1 -.-> M2
+    N0 -.-> M2
+    M2 -.-> N4
+    style N0 fill:#E8F0EA,stroke:#92C79A
+    style N1 fill:#E8F0EA,stroke:#92C79A
+    style N2 fill:#F8BBD0,stroke:#E91E63
+    style N3 fill:#F8BBD0,stroke:#E91E63
+    style N4 fill:#EDE7F6,stroke:#9575CD
+    style N5 fill:#F8BBD0,stroke:#E91E63
+    style N6 fill:#E8F0EA,stroke:#92C79A
+    style N7 fill:#E8F0EA,stroke:#92C79A
+    style N8 fill:#EDE7F6,stroke:#9575CD
+    style N9 fill:#EDE7F6,stroke:#9575CD
+    style N10 fill:#EDE7F6,stroke:#9575CD
+    style N11 fill:#F8BBD0,stroke:#E91E63
+    style N12 fill:#EDE7F6,stroke:#9575CD
+    style N13 fill:#F8BBD0,stroke:#E91E63
+    style N14 fill:#EDE7F6,stroke:#9575CD
+    style S0 fill:#F8BBD0,stroke:#E91E63
+    style S2 fill:#EDE7F6,stroke:#9575CD
+    style M1 fill:#E8F0EA,stroke:#92C79A
+    style M2 fill:#F8BBD0,stroke:#E91E63
+    style nest0_0 fill:#EDE7F6,stroke:#9575CD
+    style nest0_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_0 fill:#E8F0EA,stroke:#92C79A
+    style nest1_1 fill:#E8F0EA,stroke:#92C79A
+    style nest1_2 fill:#EDE7F6,stroke:#9575CD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#92C79A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_661.txt b/train/mermaid/hard/mermaid_661.txt
new file mode 100644
index 0000000000000000000000000000000000000000..11b23e17c8c0def7f27f0daca25a9a856706a3a5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_661.txt
@@ -0,0 +1,38 @@
+<Anxiety Management, connectedTo, Crisis Intervention>
+<Anxiety Management, connectedTo, Post_Traumatic Stress Disorder Support>
+<Counseling Services, connectedTo, Support Group Facilitation>
+<Counseling Services, partOf, Recreational Therapy>
+<Crisis Intervention, connectedTo, Post_Traumatic Stress Disorder Support>
+<Crisis Intervention, connectedTo, Treatment Plan Development>
+<Depression Treatment, connectedTo, Diagnosis and Assessment>
+<Depression Treatment, partOf, Mental Health Education>
+<Diagnosis and Assessment, connectedTo, Anxiety Management>
+<Diagnosis and Assessment, connectedTo, Dialectical Behavior Therapy>
+<Diagnosis and Assessment, connectedTo, Family Therapy>
+<Diagnosis and Assessment, connectedTo, Inpatient Treatment Coordination>
+<Diagnosis and Assessment, connectedTo, Peer Support Programs>
+<Diagnosis and Assessment, coordinates, Counseling Services>
+<Dialectical Behavior Therapy, connectedTo, Post_Traumatic Stress Disorder Support>
+<Digital Mental Health Tools, connectedTo, Diagnosis and Assessment>
+<Digital Mental Health Tools, connectedTo, Music Therapy>
+<Digital Mental Health Tools, connectedTo, Outpatient Program Management>
+<Eating Disorder Treatment, listens, Diagnosis and Assessment>
+<Family Therapy, complies, Peer Support Programs>
+<Family Therapy, connectedTo, Post_Traumatic Stress Disorder Support>
+<Grief Counseling, connectedTo, Diagnosis and Assessment>
+<Grief Counseling, connectedTo, Digital Mental Health Tools>
+<Inpatient Treatment Coordination, connectedTo, Therapy Session>
+<Mindfulness Practice, connectedTo, Depression Treatment>
+<Mindfulness Practice, partOf, Mental Health Education>
+<Music Therapy, connectedTo, Eating Disorder Treatment>
+<Music Therapy, connectedTo, Post_Traumatic Stress Disorder Support>
+<Outpatient Program Management, connectedTo, Mindfulness Practice>
+<Outpatient Program Management, partOf, Mental Health Education>
+<Peer Support Programs, connectedTo, Anxiety Management>
+<Post_Traumatic Stress Disorder Support, connectedTo, Coping Skill Development>
+<Post_Traumatic Stress Disorder Support, connectedTo, Inpatient Treatment Coordination>
+<Post_Traumatic Stress Disorder Support, connectedTo, Therapy Session>
+<Support Group Facilitation, audits, Diagnosis and Assessment>
+<Support Group Facilitation, partOf, Recreational Therapy>
+<Therapy Session, connectedTo, Coping Skill Development>
+<Treatment Plan Development, connectedTo, Dialectical Behavior Therapy>
diff --git a/train/mermaid/hard/mermaid_662.mmd b/train/mermaid/hard/mermaid_662.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d2369b6e7a6625508d26ed5ccee845bf0b8b1756
--- /dev/null
+++ b/train/mermaid/hard/mermaid_662.mmd
@@ -0,0 +1,128 @@
+graph LR
+    N0([start])
+    N1[[Substance Abuse Counseling]]
+    N2{Peer Support Programs}
+    N3[Anxiety Management]
+    N4[Recreational Therapy]
+    N5[/Mindfulness Practice/]
+    N6[Relapse Prevention]
+    N7(Outpatient Program Management)
+    N8[Diagnosis and Assessment]
+    N9[Eating Disorder Treatment]
+    N10(Suicide Prevention)
+    N11[[Schizophrenia Management]]
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Dialectical Behavior Therapy
+        nest0_0{Workplace Mental Health Programs}
+        nest0_1[Coping Skill Development]
+        nest0_2[Family Therapy]
+        nest0_3(Mental Health Education)
+    end
+    subgraph Trauma Therapy
+        nest1_0[Counseling Services]
+        nest1_1([Inpatient Treatment Coordination])
+        nest1_2(Art Therapy)
+        nest1_3([Depression Treatment])
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> |facilitates| N10
+    N10 -.-> N11
+    nest0_0 --> |researches| nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N10 --> nest0_0
+    nest0_3 --> N4
+    nest1_0 -.-> |refers| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 -.-> N2
+    N0 --> S0
+    S0 -.-> N4
+    S0 -.-> N3
+    S0 -.-> N9
+    N7 --> S1
+    S1 --> N11
+    S1 --> N10
+    S1 --> |audits| N9
+    N9 --> M1
+    N8 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N11
+    N0 -.-> M2
+    N2 -.-> M2
+    N1 -.-> M2
+    M2 --> N4
+    style N0 fill:#E8F0EA,stroke:#92C79A
+    style N1 fill:#E8F0EA,stroke:#92C79A
+    style N2 fill:#FFEBEB,stroke:#FFC2C2
+    style N3 fill:#E8F0EA,stroke:#92C79A
+    style N4 fill:#E8F0EA,stroke:#92C79A
+    style N5 fill:#FFEBEB,stroke:#FFC2C2
+    style N6 fill:#E8F0EA,stroke:#92C79A
+    style N7 fill:#E8F0EA,stroke:#92C79A
+    style N8 fill:#E8F0EA,stroke:#92C79A
+    style N9 fill:#D1C4E9,stroke:#673AB7
+    style N10 fill:#E8F0EA,stroke:#92C79A
+    style N11 fill:#D1C4E9,stroke:#673AB7
+    style S0 fill:#E8F0EA,stroke:#92C79A
+    style S1 fill:#E8F0EA,stroke:#92C79A
+    style M1 fill:#FFEBEB,stroke:#FFC2C2
+    style M2 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_1 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_2 fill:#D1C4E9,stroke:#673AB7
+    style nest0_3 fill:#D1C4E9,stroke:#673AB7
+    style nest1_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_1 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_2 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_3 fill:#E8F0EA,stroke:#92C79A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#673AB7,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_662.txt b/train/mermaid/hard/mermaid_662.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d77f91ebca7288d791cb6366727be06363bf3d0b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_662.txt
@@ -0,0 +1,40 @@
+<Anxiety Management, connectedTo, Recreational Therapy>
+<Art Therapy, connectedTo, Depression Treatment>
+<Art Therapy, partOf, Trauma Therapy>
+<Coping Skill Development, connectedTo, Family Therapy>
+<Coping Skill Development, partOf, Dialectical Behavior Therapy>
+<Counseling Services, partOf, Trauma Therapy>
+<Counseling Services, refers, Inpatient Treatment Coordination>
+<Depression Treatment, connectedTo, Peer Support Programs>
+<Depression Treatment, partOf, Trauma Therapy>
+<Diagnosis and Assessment, connectedTo, Eating Disorder Treatment>
+<Diagnosis and Assessment, connectedTo, Schizophrenia Management>
+<Eating Disorder Treatment, connectedTo, Schizophrenia Management>
+<Eating Disorder Treatment, facilitates, Suicide Prevention>
+<Family Therapy, connectedTo, Mental Health Education>
+<Family Therapy, partOf, Dialectical Behavior Therapy>
+<Inpatient Treatment Coordination, connectedTo, Art Therapy>
+<Inpatient Treatment Coordination, partOf, Trauma Therapy>
+<Mental Health Education, connectedTo, Recreational Therapy>
+<Mental Health Education, partOf, Dialectical Behavior Therapy>
+<Mindfulness Practice, connectedTo, Relapse Prevention>
+<Outpatient Program Management, audits, Eating Disorder Treatment>
+<Outpatient Program Management, connectedTo, Diagnosis and Assessment>
+<Outpatient Program Management, connectedTo, Schizophrenia Management>
+<Outpatient Program Management, connectedTo, Suicide Prevention>
+<Peer Support Programs, connectedTo, Anxiety Management>
+<Peer Support Programs, connectedTo, Recreational Therapy>
+<Peer Support Programs, connectedTo, Schizophrenia Management>
+<Recreational Therapy, connectedTo, Mindfulness Practice>
+<Relapse Prevention, connectedTo, Outpatient Program Management>
+<Substance Abuse Counseling, connectedTo, Counseling Services>
+<Substance Abuse Counseling, connectedTo, Peer Support Programs>
+<Substance Abuse Counseling, connectedTo, Recreational Therapy>
+<Suicide Prevention, connectedTo, Schizophrenia Management>
+<Suicide Prevention, connectedTo, Workplace Mental Health Programs>
+<Workplace Mental Health Programs, partOf, Dialectical Behavior Therapy>
+<Workplace Mental Health Programs, researches, Coping Skill Development>
+<start, connectedTo, Anxiety Management>
+<start, connectedTo, Eating Disorder Treatment>
+<start, connectedTo, Recreational Therapy>
+<start, connectedTo, Substance Abuse Counseling>
diff --git a/train/mermaid/hard/mermaid_663.mmd b/train/mermaid/hard/mermaid_663.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..60e62b179ee0c9a9e7fd22e897f1a2ea4038191b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_663.mmd
@@ -0,0 +1,102 @@
+graph TD
+    N0([Peer Support Programs])
+    N1(Suicide Prevention)
+    N2[[Bipolar Disorder Management]]
+    N3[Treatment Plan Development]
+    N4[[Mental Health Screening]]
+    N5[Coping Skill Development]
+    N6[Cognitive Behavioral Therapy]
+    N7[[Advocacy for Mental Health]]
+    N8[/Anxiety Management/]
+    N9[[Post_Traumatic Stress Disorder Support]]
+    N10(Depression Treatment)
+    N11(Diagnosis and Assessment)
+    S1(( ))
+    M1(( ))
+    subgraph Stress Reduction Techniques
+        nest0_0[Telehealth Counseling]
+        nest0_1(Support Group Facilitation)
+        nest0_2([Group Therapy])
+        nest0_3{Family Therapy}
+    end
+    subgraph Outpatient Program Management
+        nest1_0([Art Therapy])
+        nest1_1[Crisis Intervention]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> |supports| N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> |coordinates| N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N5 -.-> nest0_0
+    nest0_3 -.-> N8
+    nest1_0 --> nest1_1
+    N10 -.-> nest1_0
+    nest1_1 --> N4
+    N7 --> S1
+    S1 --> N9
+    S1 --> |monitors| N11
+    S1 -.-> |innovates| N10
+    N7 --> |advocates| M1
+    N4 -.-> M1
+    N1 --> M1
+    N2 --> M1
+    M1 --> N10
+    style N0 fill:#D6D9F0,stroke:#9FA9E1
+    style N1 fill:#E0F7FA,stroke:#00BCD4
+    style N2 fill:#C9F0F0,stroke:#4DD0E1
+    style N3 fill:#E0F7FA,stroke:#00BCD4
+    style N4 fill:#E0F7FA,stroke:#00BCD4
+    style N5 fill:#D6D9F0,stroke:#9FA9E1
+    style N6 fill:#D6D9F0,stroke:#9FA9E1
+    style N7 fill:#D6D9F0,stroke:#9FA9E1
+    style N8 fill:#D6D9F0,stroke:#9FA9E1
+    style N9 fill:#C9F0F0,stroke:#4DD0E1
+    style N10 fill:#C9F0F0,stroke:#4DD0E1
+    style N11 fill:#D6D9F0,stroke:#9FA9E1
+    style S1 fill:#D6D9F0,stroke:#9FA9E1
+    style M1 fill:#D6D9F0,stroke:#9FA9E1
+    style nest0_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_1 fill:#C9F0F0,stroke:#4DD0E1
+    style nest0_2 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_3 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_1 fill:#D6D9F0,stroke:#9FA9E1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_663.txt b/train/mermaid/hard/mermaid_663.txt
new file mode 100644
index 0000000000000000000000000000000000000000..33131c7ffa9990fff3ad36e7a9182a2a6732cba0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_663.txt
@@ -0,0 +1,32 @@
+<Advocacy for Mental Health, advocates, Depression Treatment>
+<Advocacy for Mental Health, connectedTo, Anxiety Management>
+<Advocacy for Mental Health, connectedTo, Post_Traumatic Stress Disorder Support>
+<Advocacy for Mental Health, innovates, Depression Treatment>
+<Advocacy for Mental Health, monitors, Diagnosis and Assessment>
+<Anxiety Management, connectedTo, Post_Traumatic Stress Disorder Support>
+<Art Therapy, connectedTo, Crisis Intervention>
+<Art Therapy, partOf, Outpatient Program Management>
+<Bipolar Disorder Management, connectedTo, Depression Treatment>
+<Bipolar Disorder Management, connectedTo, Treatment Plan Development>
+<Cognitive Behavioral Therapy, connectedTo, Advocacy for Mental Health>
+<Coping Skill Development, connectedTo, Telehealth Counseling>
+<Coping Skill Development, supports, Cognitive Behavioral Therapy>
+<Crisis Intervention, connectedTo, Mental Health Screening>
+<Crisis Intervention, partOf, Outpatient Program Management>
+<Depression Treatment, connectedTo, Art Therapy>
+<Depression Treatment, connectedTo, Diagnosis and Assessment>
+<Family Therapy, connectedTo, Anxiety Management>
+<Family Therapy, partOf, Stress Reduction Techniques>
+<Group Therapy, connectedTo, Family Therapy>
+<Group Therapy, partOf, Stress Reduction Techniques>
+<Mental Health Screening, connectedTo, Coping Skill Development>
+<Mental Health Screening, connectedTo, Depression Treatment>
+<Peer Support Programs, connectedTo, Suicide Prevention>
+<Post_Traumatic Stress Disorder Support, coordinates, Depression Treatment>
+<Suicide Prevention, connectedTo, Bipolar Disorder Management>
+<Suicide Prevention, connectedTo, Depression Treatment>
+<Support Group Facilitation, connectedTo, Group Therapy>
+<Support Group Facilitation, partOf, Stress Reduction Techniques>
+<Telehealth Counseling, connectedTo, Support Group Facilitation>
+<Telehealth Counseling, partOf, Stress Reduction Techniques>
+<Treatment Plan Development, connectedTo, Mental Health Screening>
diff --git a/train/mermaid/hard/mermaid_665.txt b/train/mermaid/hard/mermaid_665.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a808108970594eea92b1a3bf7b1d83b538f60bc9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_665.txt
@@ -0,0 +1,34 @@
+<Body Composition Analysis, connectedTo, Food Allergy Management>
+<Body Composition Analysis, partOf, Clinical Nutrition Support>
+<Child Nutrition, connectedTo, Body Composition Analysis>
+<Child Nutrition, partOf, Clinical Nutrition Support>
+<Community Nutrition Workshops, connectedTo, Nutrigenomics Research>
+<Community Nutrition Workshops, partOf, Food Fortification Strategies>
+<Disease_Specific Nutrition, assesses, Food Safety Education>
+<Disease_Specific Nutrition, connectedTo, Nutritional Biomarker Analysis>
+<Disease_Specific Nutrition, connectedTo, Public Health Nutrition Programs>
+<Disease_Specific Nutrition, connectedTo, Sports Nutrition>
+<Eating Habit Modification, connectedTo, Personalized Nutrition Plans>
+<Food Allergy Management, connectedTo, Food Label Interpretation>
+<Food Allergy Management, customizes, Disease_Specific Nutrition>
+<Food Label Interpretation, connectedTo, Disease_Specific Nutrition>
+<Food Label Interpretation, connectedTo, Eating Habit Modification>
+<Food Label Interpretation, connectedTo, Gut Microbiome Health>
+<Food Label Interpretation, connectedTo, Nutritional Biomarker Analysis>
+<Food Label Interpretation, sources, Public Health Nutrition Programs>
+<Food Safety Education, counsels, Community Nutrition Workshops>
+<Food Safety Education, partOf, Food Fortification Strategies>
+<Gut Microbiome Health, connectedTo, Disease_Specific Nutrition>
+<Macronutrient Tracking, measures, Weight Management>
+<Nutrigenomics Research, connectedTo, Macronutrient Tracking>
+<Nutrigenomics Research, partOf, Food Fortification Strategies>
+<Nutritional Biomarker Analysis, connectedTo, Macronutrient Tracking>
+<Personalized Nutrition Plans, connectedTo, Disease_Specific Nutrition>
+<Personalized Nutrition Plans, connectedTo, Gut Microbiome Health>
+<Sports Nutrition, connectedTo, Child Nutrition>
+<Sports Nutrition, connectedTo, Nutritional Biomarker Analysis>
+<Weight Management, connectedTo, Public Health Nutrition Programs>
+<start, connectedTo, Disease_Specific Nutrition>
+<start, connectedTo, Food Allergy Management>
+<start, connectedTo, Nutritional Biomarker Analysis>
+<start, connectedTo, Sports Nutrition>
diff --git a/train/mermaid/hard/mermaid_669.txt b/train/mermaid/hard/mermaid_669.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5e8344147e17dcb6e1a4fe14bba769796cf591b3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_669.txt
@@ -0,0 +1,40 @@
+<Clinical Nutrition Support, connectedTo, Recipe Adaptation>
+<Clinical Nutrition Support, connectedTo, Weight Management>
+<Detoxification Programs, connectedTo, Food Waste Reduction>
+<Detoxification Programs, partOf, Food Allergy Management>
+<Dietary Supplement Review, connectedTo, Nutritional Counseling>
+<Dietary Supplement Review, partOf, Public Health Nutrition Programs>
+<Disease_Specific Nutrition, connectedTo, Detoxification Programs>
+<Disease_Specific Nutrition, partOf, Food Allergy Management>
+<Eating Habit Modification, connectedTo, Sustainable Food Systems>
+<Elderly Nutrition, connectedTo, Food Service Management Consulting>
+<Food Fortification Strategies, connectedTo, Clinical Nutrition Support>
+<Food Fortification Strategies, connectedTo, Restaurant Menu Analysis>
+<Food Service Management Consulting, complies, Clinical Nutrition Support>
+<Food Service Management Consulting, connectedTo, Eating Habit Modification>
+<Food Service Management Consulting, connectedTo, Food Fortification Strategies>
+<Food Waste Reduction, connectedTo, Clinical Nutrition Support>
+<Food Waste Reduction, connectedTo, Nutritional Counseling>
+<Genetic Nutrition Counseling, connectedTo, Clinical Nutrition Support>
+<Genetic Nutrition Counseling, connectedTo, Food Waste Reduction>
+<Genetic Nutrition Counseling, connectedTo, Nutritional Counseling>
+<Genetic Nutrition Counseling, connectedTo, Personalized Nutrition Plans>
+<Gut Microbiome Health, connectedTo, Eating Habit Modification>
+<Hydration Planning, manages, Dietary Supplement Review>
+<Hydration Planning, partOf, Public Health Nutrition Programs>
+<Maternal Nutrition, consults, Disease_Specific Nutrition>
+<Maternal Nutrition, partOf, Food Allergy Management>
+<Metabolism Rate Assessment, connectedTo, Genetic Nutrition Counseling>
+<Metabolism Rate Assessment, connectedTo, Nutritional Counseling>
+<Nutritional Counseling, connectedTo, Clinical Nutrition Support>
+<Nutritional Counseling, connectedTo, Eating Habit Modification>
+<Nutritional Counseling, connectedTo, Elderly Nutrition>
+<Nutritional Counseling, connectedTo, Gut Microbiome Health>
+<Nutritional Counseling, connectedTo, Sustainable Food Systems>
+<Personalized Nutrition Plans, connectedTo, Hydration Planning>
+<Personalized Nutrition Plans, partOf, Public Health Nutrition Programs>
+<Recipe Adaptation, connectedTo, Maternal Nutrition>
+<Recipe Adaptation, partOf, Food Allergy Management>
+<Restaurant Menu Analysis, advises, Clinical Nutrition Support>
+<Sustainable Food Systems, connectedTo, end>
+<Weight Management, connectedTo, Gut Microbiome Health>
diff --git a/train/mermaid/hard/mermaid_670.txt b/train/mermaid/hard/mermaid_670.txt
new file mode 100644
index 0000000000000000000000000000000000000000..981259ae51dfde6ab999d9ff1243cfb6e139e2fa
--- /dev/null
+++ b/train/mermaid/hard/mermaid_670.txt
@@ -0,0 +1,36 @@
+<Child Nutrition, connectedTo, Eating Habit Modification>
+<Child Nutrition, partOf, Recipe Adaptation>
+<Clinical Nutrition Support, connectedTo, Dietary Software Usage>
+<Clinical Nutrition Support, partOf, Agricultural Nutrition Impact>
+<Community Nutrition Workshops, connectedTo, Meal Planning>
+<Community Nutrition Workshops, connectedTo, Supplement Recommendation>
+<Detoxification Programs, connectedTo, Sustainable Food Systems>
+<Dietary Assessment, connectedTo, Clinical Nutrition Support>
+<Dietary Assessment, connectedTo, end>
+<Dietary Software Usage, partOf, Agricultural Nutrition Impact>
+<Dietary Software Usage, tracks, Food Label Interpretation>
+<Eating Habit Modification, connectedTo, Supplement Recommendation>
+<Eating Habit Modification, partOf, Recipe Adaptation>
+<Food Label Interpretation, connectedTo, end>
+<Food Label Interpretation, partOf, Agricultural Nutrition Impact>
+<Food Safety Education, connectedTo, Food Service Management Consulting>
+<Food Safety Education, connectedTo, Nutritional Biomarker Analysis>
+<Food Service Management Consulting, connectedTo, Grocery Shopping Guidance>
+<Food Service Management Consulting, partOf, Recipe Adaptation>
+<Food Waste Reduction, connectedTo, Detoxification Programs>
+<Food Waste Reduction, connectedTo, Dietary Assessment>
+<Food Waste Reduction, connectedTo, Nutrigenomics Research>
+<Food Waste Reduction, connectedTo, end>
+<Grocery Shopping Guidance, connectedTo, Child Nutrition>
+<Grocery Shopping Guidance, partOf, Recipe Adaptation>
+<Inflammation and Diet, connectedTo, Community Nutrition Workshops>
+<Maternal Nutrition, connectedTo, Food Waste Reduction>
+<Meal Planning, connectedTo, Food Safety Education>
+<Meal Planning, connectedTo, Supplement Recommendation>
+<Nutrigenomics Research, connectedTo, Dietary Assessment>
+<Nutrigenomics Research, connectedTo, end>
+<Nutritional Biomarker Analysis, connectedTo, Supplement Recommendation>
+<Supplement Recommendation, connectedTo, Maternal Nutrition>
+<Sustainable Food Systems, connectedTo, Nutrigenomics Research>
+<Weight Management, connectedTo, Inflammation and Diet>
+<Weight Management, connectedTo, Supplement Recommendation>
diff --git a/train/mermaid/hard/mermaid_673.mmd b/train/mermaid/hard/mermaid_673.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..939ca5e3870c5276523afd0ee34dba39b352d1d9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_673.mmd
@@ -0,0 +1,122 @@
+graph RL
+    N0([start])
+    N1[Sports_Specific Training]
+    N2[/Fitness Equipment Maintenance/]
+    N3(Nutrition for Fitness)
+    N4[Workout Planning]
+    N5[[Strength Training]]
+    N6{Fitness Assessment}
+    N7[[Outdoor Fitness Activities]]
+    N8[[Home Workout Programs]]
+    N9[Online Fitness Coaching]
+    N10{Hydration for Exercise}
+    N11{Weightlifting Techniques}
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Youth Fitness Programs
+        nest0_0(Senior Fitness Programs)
+        nest0_1[[Biometric Feedback Integration]]
+        nest0_2[(Posture Correction)]
+    end
+    subgraph Virtual Fitness Classes
+        nest1_0(Body Composition Analysis)
+        nest1_1(Personalized Exercise Prescriptions)
+        nest1_2[[Wearable Fitness Devices]]
+        nest1_3[/Injury Prevention/]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> |conditions| N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N8 --> |measures| nest0_0
+    nest0_2 -.-> N4
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N7 --> |supports| nest1_0
+    nest1_3 --> |exercises| N2
+    N5 -.-> S0
+    S0 -.-> |engages| N7
+    S0 --> N8
+    N6 --> S1
+    S1 -.-> N11
+    S1 -.-> N8
+    S1 -.-> N10
+    N5 --> M0
+    N6 --> M0
+    N2 --> M0
+    M0 -.-> N8
+    N8 --> |manufactures| M1
+    N5 --> M1
+    N4 --> M1
+    M1 -.-> N10
+    style N0 fill:#FFDAB9,stroke:#FFC085
+    style N1 fill:#F9FBE7,stroke:#C0CA33
+    style N2 fill:#F9FBE7,stroke:#C0CA33
+    style N3 fill:#FFDAB9,stroke:#FFC085
+    style N4 fill:#F9FBE7,stroke:#C0CA33
+    style N5 fill:#FFDAB9,stroke:#FFC085
+    style N6 fill:#FFDAB9,stroke:#FFC085
+    style N7 fill:#FFDAB9,stroke:#FFC085
+    style N8 fill:#F9FBE7,stroke:#C0CA33
+    style N9 fill:#FFDAB9,stroke:#FFC085
+    style N10 fill:#ECEFF1,stroke:#90A4AE
+    style N11 fill:#ECEFF1,stroke:#90A4AE
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#FFDAB9,stroke:#FFC085
+    style M0 fill:#FFDAB9,stroke:#FFC085
+    style M1 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_0 fill:#FFDAB9,stroke:#FFC085
+    style nest0_1 fill:#ECEFF1,stroke:#90A4AE
+    style nest0_2 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_0 fill:#F9FBE7,stroke:#C0CA33
+    style nest1_1 fill:#FFDAB9,stroke:#FFC085
+    style nest1_2 fill:#FFDAB9,stroke:#FFC085
+    style nest1_3 fill:#FFDAB9,stroke:#FFC085
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_675.txt b/train/mermaid/hard/mermaid_675.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a28d1b0f6806bbf7bfa81e9f48cf9c11f2aaa487
--- /dev/null
+++ b/train/mermaid/hard/mermaid_675.txt
@@ -0,0 +1,42 @@
+<Balance and Coordination, connectedTo, Biometric Feedback Integration>
+<Balance and Coordination, connectedTo, Online Fitness Coaching>
+<Balance and Coordination, connectedTo, Sports_Specific Training>
+<Balance and Coordination, connectedTo, Virtual Fitness Classes>
+<Biometric Feedback Integration, connectedTo, HIIT Workouts>
+<Biometric Feedback Integration, connectedTo, Rehabilitation Exercises>
+<Biometric Feedback Integration, connectedTo, Sports_Specific Training>
+<Biometric Feedback Integration, connectedTo, Virtual Fitness Classes>
+<Biometric Feedback Integration, connectedTo, end>
+<Cardiovascular Training, connectedTo, Fitness Equipment Maintenance>
+<Cardiovascular Training, partOf, Pilates Instruction>
+<Community Fitness Challenges, no, Injury Prevention>
+<Fitness Equipment Maintenance, connectedTo, Online Fitness Coaching>
+<Fitness Equipment Maintenance, partOf, Pilates Instruction>
+<Flexibility Training, connectedTo, Biometric Feedback Integration>
+<Flexibility Training, yes, Balance and Coordination>
+<Group Fitness Classes, no, Biometric Feedback Integration>
+<HIIT Workouts, connectedTo, Sports_Specific Training>
+<Home Workout Programs, connectedTo, Youth Fitness Programs>
+<Home Workout Programs, partOf, Core Strengthening>
+<Injury Prevention, no, Personal Training>
+<Mind_Body Connection, connectedTo, Group Fitness Classes>
+<Mind_Body Connection, connectedTo, Home Workout Programs>
+<Motivation and Goal Setting, connectedTo, end>
+<Motivation and Goal Setting, partOf, Core Strengthening>
+<Online Fitness Coaching, yes, Community Fitness Challenges>
+<Personal Training, connectedTo, Mind_Body Connection>
+<Personal Training, connectedTo, Rehabilitation Exercises>
+<Personal Training, connectedTo, end>
+<Posture Correction, connectedTo, Biometric Feedback Integration>
+<Posture Correction, connectedTo, Flexibility Training>
+<Posture Correction, connectedTo, Strength Training>
+<Rehabilitation Exercises, connectedTo, end>
+<Sports_Specific Training, connectedTo, Rehabilitation Exercises>
+<Strength Training, partOf, Pilates Instruction>
+<Strength Training, yes, Cardiovascular Training>
+<Virtual Fitness Classes, yes, HIIT Workouts>
+<Workout Tracking Apps, connectedTo, Motivation and Goal Setting>
+<Workout Tracking Apps, partOf, Core Strengthening>
+<Youth Fitness Programs, connectedTo, Workout Tracking Apps>
+<Youth Fitness Programs, partOf, Core Strengthening>
+<start, connectedTo, Posture Correction>
diff --git a/train/mermaid/hard/mermaid_678.mmd b/train/mermaid/hard/mermaid_678.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..63a431cd8df92ac77fc29530b36d6a4e087c265c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_678.mmd
@@ -0,0 +1,144 @@
+graph RL
+    N0([start])
+    N1[Motivation and Goal Setting]
+    N2[[Youth Fitness Programs]]
+    N3[[Wearable Fitness Devices]]
+    N4(Mind_Body Connection)
+    N5(Hydration for Exercise)
+    N6{Senior Fitness Programs}
+    N7(Strength Training)
+    N8{Rehabilitation Exercises}
+    N9[[Nutrition for Fitness]]
+    N10[Endurance Training]
+    N11([Functional Fitness Training])
+    N12(Posture Correction)
+    N13(Personalized Exercise Prescriptions)
+    N14([Workout Planning])
+    N15(Body Composition Analysis)
+    N16([end])
+    S0(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Home Workout Programs
+        nest0_0{Community Fitness Challenges}
+        nest0_1{Corporate Wellness Programs}
+    end
+    subgraph Outdoor Fitness Activities
+        nest1_0(Fitness Assessment)
+        nest1_1[/Weightlifting Techniques/]
+        nest1_2[(Flexibility Training)]
+        nest1_3[Personal Training]
+    end
+    N0 -.-> N1
+    N1 -.-> |analyzes| N2
+    N2 --> N3
+    N3 -.-> |automates| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    N12 --> nest0_0
+    nest0_1 --> N14
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N12 -.-> nest1_0
+    nest1_3 -.-> N12
+    N9 --> S0
+    S0 --> |recovers| N16
+    S0 -.-> N14
+    S0 --> N11
+    S0 -.-> N15
+    N1 -.-> M0
+    N12 -.-> M0
+    N5 --> M0
+    N4 --> M0
+    M0 --> N16
+    N3 -.-> M1
+    N5 --> M1
+    N7 --> M1
+    M1 -.-> N15
+    N5 -.-> M2
+    N11 -.-> M2
+    N2 --> M2
+    M2 --> N16
+    style N0 fill:#EDE7F6,stroke:#9575CD
+    style N1 fill:#C8EDFF,stroke:#82DAFF
+    style N2 fill:#C8EDFF,stroke:#82DAFF
+    style N3 fill:#C8EDFF,stroke:#82DAFF
+    style N4 fill:#EDE7F6,stroke:#9575CD
+    style N5 fill:#D1C4E9,stroke:#673AB7
+    style N6 fill:#C8EDFF,stroke:#82DAFF
+    style N7 fill:#EDE7F6,stroke:#9575CD
+    style N8 fill:#EDE7F6,stroke:#9575CD
+    style N9 fill:#D1C4E9,stroke:#673AB7
+    style N10 fill:#D1C4E9,stroke:#673AB7
+    style N11 fill:#C8EDFF,stroke:#82DAFF
+    style N12 fill:#EDE7F6,stroke:#9575CD
+    style N13 fill:#C8EDFF,stroke:#82DAFF
+    style N14 fill:#C8EDFF,stroke:#82DAFF
+    style N15 fill:#D1C4E9,stroke:#673AB7
+    style N16 fill:#C8EDFF,stroke:#82DAFF
+    style S0 fill:#C8EDFF,stroke:#82DAFF
+    style M0 fill:#EDE7F6,stroke:#9575CD
+    style M1 fill:#EDE7F6,stroke:#9575CD
+    style M2 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_0 fill:#D1C4E9,stroke:#673AB7
+    style nest0_1 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_0 fill:#D1C4E9,stroke:#673AB7
+    style nest1_1 fill:#D1C4E9,stroke:#673AB7
+    style nest1_2 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_3 fill:#C8EDFF,stroke:#82DAFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#673AB7,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_678.txt b/train/mermaid/hard/mermaid_678.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2ba3277333d61d1c0b5d119edc6b9cb1bbb7acf1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_678.txt
@@ -0,0 +1,43 @@
+<Body Composition Analysis, connectedTo, end>
+<Community Fitness Challenges, connectedTo, Corporate Wellness Programs>
+<Community Fitness Challenges, partOf, Home Workout Programs>
+<Corporate Wellness Programs, connectedTo, Workout Planning>
+<Corporate Wellness Programs, partOf, Home Workout Programs>
+<Endurance Training, connectedTo, Functional Fitness Training>
+<Fitness Assessment, connectedTo, Weightlifting Techniques>
+<Fitness Assessment, partOf, Outdoor Fitness Activities>
+<Flexibility Training, connectedTo, Personal Training>
+<Flexibility Training, partOf, Outdoor Fitness Activities>
+<Functional Fitness Training, connectedTo, Posture Correction>
+<Functional Fitness Training, connectedTo, end>
+<Hydration for Exercise, connectedTo, Body Composition Analysis>
+<Hydration for Exercise, connectedTo, Senior Fitness Programs>
+<Hydration for Exercise, connectedTo, end>
+<Mind_Body Connection, connectedTo, Hydration for Exercise>
+<Mind_Body Connection, connectedTo, end>
+<Motivation and Goal Setting, analyzes, Youth Fitness Programs>
+<Motivation and Goal Setting, connectedTo, end>
+<Nutrition for Fitness, connectedTo, Body Composition Analysis>
+<Nutrition for Fitness, connectedTo, Endurance Training>
+<Nutrition for Fitness, connectedTo, Functional Fitness Training>
+<Nutrition for Fitness, connectedTo, Workout Planning>
+<Nutrition for Fitness, recovers, end>
+<Personal Training, connectedTo, Posture Correction>
+<Personal Training, partOf, Outdoor Fitness Activities>
+<Personalized Exercise Prescriptions, connectedTo, Workout Planning>
+<Posture Correction, connectedTo, Community Fitness Challenges>
+<Posture Correction, connectedTo, Fitness Assessment>
+<Posture Correction, connectedTo, Personalized Exercise Prescriptions>
+<Posture Correction, connectedTo, end>
+<Rehabilitation Exercises, connectedTo, Nutrition for Fitness>
+<Senior Fitness Programs, connectedTo, Strength Training>
+<Strength Training, connectedTo, Body Composition Analysis>
+<Strength Training, connectedTo, Rehabilitation Exercises>
+<Wearable Fitness Devices, automates, Mind_Body Connection>
+<Wearable Fitness Devices, connectedTo, Body Composition Analysis>
+<Weightlifting Techniques, connectedTo, Flexibility Training>
+<Weightlifting Techniques, partOf, Outdoor Fitness Activities>
+<Workout Planning, connectedTo, Body Composition Analysis>
+<Youth Fitness Programs, connectedTo, Wearable Fitness Devices>
+<Youth Fitness Programs, connectedTo, end>
+<start, connectedTo, Motivation and Goal Setting>
diff --git a/train/mermaid/hard/mermaid_679.txt b/train/mermaid/hard/mermaid_679.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d96544ce787672269393ee0a0f0ae2c6a026b739
--- /dev/null
+++ b/train/mermaid/hard/mermaid_679.txt
@@ -0,0 +1,39 @@
+<Balance and Coordination, connectedTo, Community Fitness Challenges>
+<Balance and Coordination, partOf, Pilates Instruction>
+<Community Fitness Challenges, connectedTo, Outdoor Fitness Activities>
+<Community Fitness Challenges, partOf, Pilates Instruction>
+<Core Strengthening, connectedTo, Nutrition for Fitness>
+<Core Strengthening, partOf, Recovery Strategies>
+<Fitness Equipment Maintenance, supports, Wearable Fitness Devices>
+<Flexibility Training, connectedTo, HIIT Workouts>
+<Flexibility Training, connectedTo, Personal Training>
+<Group Fitness Classes, connectedTo, Balance and Coordination>
+<Group Fitness Classes, connectedTo, Personal Training>
+<HIIT Workouts, connectedTo, Rehabilitation Exercises>
+<Injury Prevention, connectedTo, Wearable Fitness Devices>
+<Injury Prevention, partOf, Pilates Instruction>
+<Mind_Body Connection, connectedTo, Core Strengthening>
+<Mind_Body Connection, partOf, Recovery Strategies>
+<Motivation and Goal Setting, connectedTo, Flexibility Training>
+<Motivation and Goal Setting, partOf, Recovery Strategies>
+<Nutrition for Fitness, connectedTo, Motivation and Goal Setting>
+<Nutrition for Fitness, partOf, Recovery Strategies>
+<Outdoor Fitness Activities, connectedTo, Injury Prevention>
+<Outdoor Fitness Activities, partOf, Pilates Instruction>
+<Personal Training, connectedTo, Workout Planning>
+<Personalized Exercise Prescriptions, connectedTo, Running Coaching>
+<Rehabilitation Exercises, connectedTo, Group Fitness Classes>
+<Rehabilitation Exercises, connectedTo, Personal Training>
+<Rehabilitation Exercises, connectedTo, Posture Correction>
+<Rehabilitation Exercises, connectedTo, Running Coaching>
+<Rehabilitation Exercises, connectedTo, Workout Planning>
+<Rehabilitation Exercises, engages, Personalized Exercise Prescriptions>
+<Running Coaching, certifies, Posture Correction>
+<Sports_Specific Training, connectedTo, Flexibility Training>
+<Sports_Specific Training, connectedTo, Mind_Body Connection>
+<Sports_Specific Training, connectedTo, Personal Training>
+<Wearable Fitness Devices, connectedTo, Personal Training>
+<Wearable Fitness Devices, tracks, Sports_Specific Training>
+<Workout Planning, connectedTo, Personalized Exercise Prescriptions>
+<Workout Planning, connectedTo, Running Coaching>
+<Workout Planning, improves, Posture Correction>
diff --git a/train/mermaid/hard/mermaid_680.txt b/train/mermaid/hard/mermaid_680.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5748e87d2fca48f94123a8fd9773513db5907252
--- /dev/null
+++ b/train/mermaid/hard/mermaid_680.txt
@@ -0,0 +1,45 @@
+<Balance and Coordination, connectedTo, Nutrition for Fitness>
+<Biometric Feedback Integration, connectedTo, Community Fitness Challenges>
+<Biometric Feedback Integration, connectedTo, Virtual Fitness Classes>
+<Community Fitness Challenges, connectedTo, HIIT Workouts>
+<Community Fitness Challenges, partOf, Motivation and Goal Setting>
+<Endurance Training, connectedTo, Pilates Instruction>
+<Fitness Assessment, connectedTo, Biometric Feedback Integration>
+<Fitness Equipment Maintenance, connectedTo, Home Workout Programs>
+<Fitness Equipment Maintenance, connectedTo, Senior Fitness Programs>
+<Group Fitness Classes, connectedTo, Fitness Equipment Maintenance>
+<HIIT Workouts, connectedTo, Sports_Specific Training>
+<HIIT Workouts, partOf, Motivation and Goal Setting>
+<Home Workout Programs, connectedTo, Cross_Training>
+<Home Workout Programs, connectedTo, Nutrition for Fitness>
+<Home Workout Programs, connectedTo, Running Coaching>
+<Home Workout Programs, connectedTo, Workout Tracking Apps>
+<Mind_Body Connection, connectedTo, Recovery Strategies>
+<Mind_Body Connection, connectedTo, Virtual Fitness Classes>
+<Nutrition for Fitness, connectedTo, Workout Tracking Apps>
+<Online Fitness Coaching, connectedTo, Endurance Training>
+<Pilates Instruction, connectedTo, Group Fitness Classes>
+<Recovery Strategies, communicates, Virtual Fitness Classes>
+<Recovery Strategies, connectedTo, Fitness Assessment>
+<Recovery Strategies, connectedTo, Sports_Specific Training>
+<Recovery Strategies, connectedTo, Strength Training>
+<Recovery Strategies, predicts, Group Fitness Classes>
+<Rehabilitation Exercises, connectedTo, Weightlifting Techniques>
+<Rehabilitation Exercises, partOf, Personalized Exercise Prescriptions>
+<Running Coaching, connectedTo, Balance and Coordination>
+<Senior Fitness Programs, connectedTo, Rehabilitation Exercises>
+<Senior Fitness Programs, partOf, Personalized Exercise Prescriptions>
+<Sports_Specific Training, connectedTo, Group Fitness Classes>
+<Sports_Specific Training, connectedTo, Virtual Fitness Classes>
+<Sports_Specific Training, connectedTo, Wearable Fitness Devices>
+<Strength Training, connectedTo, Fitness Assessment>
+<Strength Training, connectedTo, Fitness Equipment Maintenance>
+<Virtual Fitness Classes, connectedTo, Fitness Equipment Maintenance>
+<Virtual Fitness Classes, connectedTo, Online Fitness Coaching>
+<Wearable Fitness Devices, connectedTo, Strength Training>
+<Wearable Fitness Devices, connectedTo, Virtual Fitness Classes>
+<Weightlifting Techniques, connectedTo, Youth Fitness Programs>
+<Weightlifting Techniques, partOf, Personalized Exercise Prescriptions>
+<Workout Tracking Apps, connectedTo, Cross_Training>
+<Youth Fitness Programs, connectedTo, Running Coaching>
+<Youth Fitness Programs, partOf, Personalized Exercise Prescriptions>
diff --git a/train/mermaid/hard/mermaid_683.mmd b/train/mermaid/hard/mermaid_683.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8073865a9c4e1118860af75c2a71a1469b11e337
--- /dev/null
+++ b/train/mermaid/hard/mermaid_683.mmd
@@ -0,0 +1,106 @@
+graph BT
+    N0([Environmental Wellness])
+    N1[Journaling for Wellness]
+    N2[[Proactive Health Management]]
+    N3[Community Wellness Programs]
+    N4[Personal Growth Planning]
+    N5(Sleep Optimization)
+    N6[Acupuncture Consultation]
+    N7[[Emotional Well_being]]
+    N8[Wellness Retreat Planning]
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Mindfulness Practice
+        nest0_0[Detox Programs]
+        nest0_1[(Spiritual Exploration)]
+        nest0_2[[Aromatherapy Usage]]
+        nest0_3[[Self_Care Routine Development]]
+    end
+    subgraph Biofeedback Training
+        nest1_0[/Social Connection Enhancement/]
+        nest1_1[[Positive Psychology Application]]
+        nest1_2([Nutrition Guidance])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> |audits| N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    nest0_0 -.-> |improves| nest0_1
+    nest0_1 --> |supports| nest0_2
+    nest0_2 -.-> nest0_3
+    N4 -.-> nest0_0
+    nest0_3 --> N5
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N2 -.-> nest1_0
+    nest1_2 --> N5
+    N3 --> S1
+    S1 -.-> N6
+    S1 --> N7
+    S1 -.-> N8
+    N1 --> S2
+    S2 --> N3
+    S2 --> N4
+    N1 --> M0
+    N0 --> M0
+    M0 --> N5
+    N0 -.-> M2
+    N4 -.-> M2
+    M2 -.-> N8
+    style N0 fill:#FFDAB9,stroke:#FFC085
+    style N1 fill:#D7CCC8,stroke:#795548
+    style N2 fill:#FFDAB9,stroke:#FFC085
+    style N3 fill:#D7CCC8,stroke:#795548
+    style N4 fill:#D7CCC8,stroke:#795548
+    style N5 fill:#FFECB3,stroke:#FFC107
+    style N6 fill:#D7CCC8,stroke:#795548
+    style N7 fill:#FFECB3,stroke:#FFC107
+    style N8 fill:#FFECB3,stroke:#FFC107
+    style S1 fill:#FFECB3,stroke:#FFC107
+    style S2 fill:#FFECB3,stroke:#FFC107
+    style M0 fill:#FFECB3,stroke:#FFC107
+    style M2 fill:#D7CCC8,stroke:#795548
+    style nest0_0 fill:#FFDAB9,stroke:#FFC085
+    style nest0_1 fill:#FFECB3,stroke:#FFC107
+    style nest0_2 fill:#FFECB3,stroke:#FFC107
+    style nest0_3 fill:#FFDAB9,stroke:#FFC085
+    style nest1_0 fill:#FFDAB9,stroke:#FFC085
+    style nest1_1 fill:#FFDAB9,stroke:#FFC085
+    style nest1_2 fill:#FFDAB9,stroke:#FFC085
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC107,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFC107,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_689.mmd b/train/mermaid/hard/mermaid_689.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a0e00bafbb314d2d74b3e24380fa9b37b2889447
--- /dev/null
+++ b/train/mermaid/hard/mermaid_689.mmd
@@ -0,0 +1,118 @@
+graph BT
+    N0([Ergonomics Integration])
+    N1([Furniture Selection])
+    N2[Flooring Specification]
+    N3{Residential Interior Design}
+    N4[Living Room Design]
+    N5[(Construction Documentation)]
+    N6[Art and Accessory Curation]
+    N7[Installation Supervision]
+    N8([Healthcare Interior Design])
+    N9[/Smart Home Technology Integration/]
+    N10[3D Rendering]
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Building Code Compliance
+        nest0_0{Bathroom Design}
+        nest0_1(Custom Furniture Design)
+    end
+    subgraph Hospitality Interior Design
+        nest1_0[(Site Measurement)]
+        nest1_1([Bedroom Design])
+        nest1_2[Universal Design Principles]
+        nest1_3(CAD Drafting)
+    end
+    N0 --> N1
+    N1 -.-> |furnishes| N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 --> nest0_1
+    N2 --> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N3 -.-> |selects| nest1_0
+    nest1_3 --> N9
+    N2 --> S0
+    S0 --> N7
+    S0 --> |licenses| N9
+    S0 --> N4
+    S0 --> N10
+    N7 --> S1
+    S1 --> N9
+    S1 --> N10
+    N4 --> M1
+    N1 --> M1
+    N0 --> M1
+    N2 --> M1
+    M1 -.-> N6
+    N0 --> |consults| M2
+    N3 --> M2
+    N5 --> M2
+    M2 -.-> N9
+    style N0 fill:#F8FDD3,stroke:#D3EB9F
+    style N1 fill:#FFF3E0,stroke:#FFA726
+    style N2 fill:#F8FDD3,stroke:#D3EB9F
+    style N3 fill:#F8FDD3,stroke:#D3EB9F
+    style N4 fill:#E9F7E8,stroke:#6EB76D
+    style N5 fill:#E9F7E8,stroke:#6EB76D
+    style N6 fill:#FFF3E0,stroke:#FFA726
+    style N7 fill:#FFF3E0,stroke:#FFA726
+    style N8 fill:#E9F7E8,stroke:#6EB76D
+    style N9 fill:#F8FDD3,stroke:#D3EB9F
+    style N10 fill:#FFF3E0,stroke:#FFA726
+    style S0 fill:#FFF3E0,stroke:#FFA726
+    style S1 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style M2 fill:#FFF3E0,stroke:#FFA726
+    style nest0_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_0 fill:#FFF3E0,stroke:#FFA726
+    style nest1_1 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_2 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_3 fill:#FFF3E0,stroke:#FFA726
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#D3EB9F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_69.mmd b/train/mermaid/hard/mermaid_69.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..30ce9756d5a61073c767d17ebfaaa987c9e4df09
--- /dev/null
+++ b/train/mermaid/hard/mermaid_69.mmd
@@ -0,0 +1,107 @@
+graph TD
+    N0([start])
+    N1[(Order Picking)]
+    N2(Yard Management)
+    N3(Proof of Delivery)
+    N4[(Container Loading)]
+    N5[(Pickup Request)]
+    N6([Route Assignment])
+    N7{Inventory Sync}
+    N8[/Delay Notification/]
+    N9[Air Cargo Handling]
+    N10[Deconsolidation]
+    N11[[Vehicle Loading]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Hub Transfer
+        nest0_0[[Global Trade Compliance]]
+        nest0_1{Cold Chain Management}
+        nest0_2[/Warehouse Entry/]
+    end
+    subgraph Package Labeling
+        nest1_0[(Packing Process)]
+        nest1_1[[Damage Reporting]]
+        nest1_2[/Customs Clearance/]
+        nest1_3[Ocean Freight Management]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N7 -.-> nest0_0
+    nest0_2 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N4 --> nest1_0
+    nest1_3 -.-> N2
+    N8 -.-> S0
+    S0 -.-> N10
+    S0 --> N11
+    N8 --> S1
+    S1 --> N10
+    S1 --> N11
+    N7 -.-> S2
+    S2 -.-> N9
+    S2 -.-> N10
+    S2 --> N11
+    N4 -.-> M0
+    N0 -.-> M0
+    M0 -.-> N11
+    N5 -.-> M1
+    N0 -.-> M1
+    M1 -.-> N8
+    style S0 fill:#BBDEFB,stroke:#2196F3
+    style S1 fill:#FFF9D4,stroke:#FFE69C
+    style S2 fill:#FFF9D4,stroke:#FFE69C
+    style M0 fill:#BBDEFB,stroke:#2196F3
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFE69C,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_69.txt b/train/mermaid/hard/mermaid_69.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0a4f200b31c6eefc0e73c607786f53e67d0d1216
--- /dev/null
+++ b/train/mermaid/hard/mermaid_69.txt
@@ -0,0 +1,36 @@
+<Air Cargo Handling, connectedTo, Deconsolidation>
+<Cold Chain Management, connectedTo, Warehouse Entry>
+<Cold Chain Management, partOf, Hub Transfer>
+<Container Loading, connectedTo, Packing Process>
+<Container Loading, connectedTo, Pickup Request>
+<Container Loading, connectedTo, Vehicle Loading>
+<Customs Clearance, connectedTo, Ocean Freight Management>
+<Customs Clearance, partOf, Package Labeling>
+<Damage Reporting, connectedTo, Customs Clearance>
+<Damage Reporting, partOf, Package Labeling>
+<Deconsolidation, connectedTo, Vehicle Loading>
+<Delay Notification, connectedTo, Air Cargo Handling>
+<Delay Notification, connectedTo, Deconsolidation>
+<Delay Notification, connectedTo, Vehicle Loading>
+<Global Trade Compliance, connectedTo, Cold Chain Management>
+<Global Trade Compliance, partOf, Hub Transfer>
+<Inventory Sync, connectedTo, Air Cargo Handling>
+<Inventory Sync, connectedTo, Deconsolidation>
+<Inventory Sync, connectedTo, Delay Notification>
+<Inventory Sync, connectedTo, Global Trade Compliance>
+<Inventory Sync, connectedTo, Vehicle Loading>
+<Ocean Freight Management, connectedTo, Yard Management>
+<Ocean Freight Management, partOf, Package Labeling>
+<Order Picking, connectedTo, Yard Management>
+<Packing Process, connectedTo, Damage Reporting>
+<Packing Process, partOf, Package Labeling>
+<Pickup Request, connectedTo, Delay Notification>
+<Pickup Request, connectedTo, Route Assignment>
+<Proof of Delivery, connectedTo, Container Loading>
+<Route Assignment, connectedTo, Inventory Sync>
+<Warehouse Entry, connectedTo, Deconsolidation>
+<Warehouse Entry, partOf, Hub Transfer>
+<Yard Management, connectedTo, Proof of Delivery>
+<start, connectedTo, Delay Notification>
+<start, connectedTo, Order Picking>
+<start, connectedTo, Vehicle Loading>
diff --git a/train/mermaid/hard/mermaid_690.mmd b/train/mermaid/hard/mermaid_690.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..405aa6f8462d0cd536c574e65ef800a912ebb075
--- /dev/null
+++ b/train/mermaid/hard/mermaid_690.mmd
@@ -0,0 +1,134 @@
+graph RL
+    N0([start])
+    N1[[Space Planning]]
+    N2(Building Code Compliance)
+    N3[(Hospitality Interior Design)]
+    N4[Bedroom Design]
+    N5[[Construction Documentation]]
+    N6(Lighting Design)
+    N7{Post_Occupancy Evaluation}
+    N8[[Textile and Fabric Selection]]
+    N9[[Flooring Specification]]
+    N10(Kitchen Design)
+    N11[(Sustainable Design Practices)]
+    N12[(Client Consultation)]
+    N13[[Smart Home Technology Integration]]
+    N14([Residential Interior Design])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Concept Development
+        nest0_0[/3D Rendering/]
+        nest0_1(Universal Design Principles)
+        nest0_2[/Budget Management/]
+    end
+    subgraph Ergonomics Integration
+        nest1_0[[Retail Interior Design]]
+        nest1_1{Mood Board Creation}
+        nest1_2[(Contractor Coordination)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N13 --> nest0_0
+    nest0_2 --> N13
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 --> N12
+    N4 --> S0
+    S0 -.-> N14
+    S0 --> N13
+    N0 -.-> S1
+    S1 --> N4
+    S1 -.-> N10
+    N5 -.-> S2
+    S2 --> N10
+    S2 --> N9
+    S2 --> N11
+    N4 -.-> M1
+    N2 --> M1
+    M1 -.-> N13
+    N4 -.-> M2
+    N5 --> M2
+    M2 -.-> N9
+    style N0 fill:#CFD8DC,stroke:#607D8B
+    style N1 fill:#CFD8DC,stroke:#607D8B
+    style N2 fill:#FFCDD2,stroke:#F44336
+    style N3 fill:#FFCDD2,stroke:#F44336
+    style N4 fill:#F3E5F5,stroke:#BA68C8
+    style N5 fill:#FFCDD2,stroke:#F44336
+    style N6 fill:#F3E5F5,stroke:#BA68C8
+    style N7 fill:#FFCDD2,stroke:#F44336
+    style N8 fill:#CFD8DC,stroke:#607D8B
+    style N9 fill:#FFCDD2,stroke:#F44336
+    style N10 fill:#FFCDD2,stroke:#F44336
+    style N11 fill:#FFCDD2,stroke:#F44336
+    style N12 fill:#FFCDD2,stroke:#F44336
+    style N13 fill:#F3E5F5,stroke:#BA68C8
+    style N14 fill:#FFCDD2,stroke:#F44336
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style S1 fill:#CFD8DC,stroke:#607D8B
+    style S2 fill:#CFD8DC,stroke:#607D8B
+    style M1 fill:#FFCDD2,stroke:#F44336
+    style M2 fill:#CFD8DC,stroke:#607D8B
+    style nest0_0 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_2 fill:#CFD8DC,stroke:#607D8B
+    style nest1_0 fill:#FFCDD2,stroke:#F44336
+    style nest1_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_2 fill:#CFD8DC,stroke:#607D8B
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_691.mmd b/train/mermaid/hard/mermaid_691.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d0159ad2a5726b1856ccb59abd94789cecfec55f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_691.mmd
@@ -0,0 +1,126 @@
+graph RL
+    N0([start])
+    N1[Office Space Design]
+    N2(Flooring Specification)
+    N3[Space Planning]
+    N4[Site Measurement]
+    N5[[Material and Finish Specification]]
+    N6[/Client Consultation/]
+    N7[[Furniture Selection]]
+    N8[Art and Accessory Curation]
+    N9[(3D Rendering)]
+    N10[(CAD Drafting)]
+    N11(Bathroom Design)
+    N12(Acoustic Treatment)
+    N13[/Sustainable Design Practices/]
+    N14([Building Code Compliance])
+    N15[(Living Room Design)]
+    N16([Textile and Fabric Selection])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Color Scheme Selection
+        nest0_0(Retail Interior Design)
+        nest0_1{Mood Board Creation}
+    end
+    subgraph Bedroom Design
+        nest1_0(Wall Treatment Selection)
+        nest1_1(Universal Design Principles)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> |sources| N13
+    N13 -.-> |installs| N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 --> N10
+    nest1_0 --> nest1_1
+    N3 --> nest1_0
+    nest1_1 -.-> N8
+    N2 -.-> S0
+    S0 -.-> |designs| N5
+    S0 -.-> N4
+    S0 --> N8
+    N6 -.-> S1
+    S1 --> N14
+    S1 -.-> N12
+    N9 --> |styles| M0
+    N0 -.-> M0
+    M0 -.-> N12
+    N1 -.-> |advises| M1
+    N0 --> |supervises| M1
+    M1 --> N3
+    style N0 fill:#F5F5DC,stroke:#BCB88A
+    style N1 fill:#DFE7EB,stroke:#B0C5CD
+    style N2 fill:#DFE7EB,stroke:#B0C5CD
+    style N3 fill:#F5F5DC,stroke:#BCB88A
+    style N4 fill:#B2EBF2,stroke:#00BCD4
+    style N5 fill:#B2EBF2,stroke:#00BCD4
+    style N6 fill:#B2EBF2,stroke:#00BCD4
+    style N7 fill:#B2EBF2,stroke:#00BCD4
+    style N8 fill:#B2EBF2,stroke:#00BCD4
+    style N9 fill:#B2EBF2,stroke:#00BCD4
+    style N10 fill:#B2EBF2,stroke:#00BCD4
+    style N11 fill:#DFE7EB,stroke:#B0C5CD
+    style N12 fill:#F5F5DC,stroke:#BCB88A
+    style N13 fill:#DFE7EB,stroke:#B0C5CD
+    style N14 fill:#F5F5DC,stroke:#BCB88A
+    style N15 fill:#F5F5DC,stroke:#BCB88A
+    style N16 fill:#B2EBF2,stroke:#00BCD4
+    style S0 fill:#B2EBF2,stroke:#00BCD4
+    style S1 fill:#DFE7EB,stroke:#B0C5CD
+    style M0 fill:#DFE7EB,stroke:#B0C5CD
+    style M1 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_0 fill:#B2EBF2,stroke:#00BCD4
+    style nest0_1 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_0 fill:#F5F5DC,stroke:#BCB88A
+    style nest1_1 fill:#F5F5DC,stroke:#BCB88A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#B0C5CD,stroke-width:2px,fill:none;
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+    linkStyle 6 stroke:#BCB88A,stroke-width:2px,fill:none;
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+    linkStyle 8 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
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+    linkStyle 15 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#00BCD4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_693.txt b/train/mermaid/hard/mermaid_693.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6382a95adc2206e21731c6c46a73b36c638bfc7d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_693.txt
@@ -0,0 +1,33 @@
+<Acoustic Treatment, connectedTo, Construction Documentation>
+<Acoustic Treatment, partOf, Art and Accessory Curation>
+<Budget Management, connectedTo, Acoustic Treatment>
+<Budget Management, partOf, Art and Accessory Curation>
+<Client Consultation, connectedTo, Smart Home Technology Integration>
+<Client Consultation, partOf, Project Management>
+<Commercial Interior Design, connectedTo, Client Consultation>
+<Commercial Interior Design, partOf, Project Management>
+<Construction Documentation, connectedTo, Custom Furniture Design>
+<Construction Documentation, partOf, Art and Accessory Curation>
+<Custom Furniture Design, connectedTo, Concept Development>
+<Furniture Selection, connectedTo, Concept Development>
+<Furniture Selection, connectedTo, Custom Furniture Design>
+<Healthcare Interior Design, connectedTo, Budget Management>
+<Healthcare Interior Design, partOf, Art and Accessory Curation>
+<Installation Supervision, connectedTo, Concept Development>
+<Installation Supervision, connectedTo, Furniture Selection>
+<Lighting Design, connectedTo, Commercial Interior Design>
+<Lighting Design, connectedTo, Installation Supervision>
+<Post_Occupancy Evaluation, connectedTo, Concept Development>
+<Post_Occupancy Evaluation, connectedTo, Custom Furniture Design>
+<Post_Occupancy Evaluation, connectedTo, Furniture Selection>
+<Post_Occupancy Evaluation, connectedTo, Lighting Design>
+<Smart Home Technology Integration, connectedTo, Custom Furniture Design>
+<Smart Home Technology Integration, partOf, Project Management>
+<Ventilation Planning, connectedTo, Concept Development>
+<Ventilation Planning, connectedTo, Custom Furniture Design>
+<Ventilation Planning, connectedTo, Healthcare Interior Design>
+<Ventilation Planning, connectedTo, Installation Supervision>
+<Ventilation Planning, connectedTo, Lighting Design>
+<Ventilation Planning, connectedTo, Post_Occupancy Evaluation>
+<start, arranges, Custom Furniture Design>
+<start, connectedTo, Ventilation Planning>
diff --git a/train/mermaid/hard/mermaid_696.txt b/train/mermaid/hard/mermaid_696.txt
new file mode 100644
index 0000000000000000000000000000000000000000..109bdfb2cbbdfccc71cec40350e194a02414d97f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_696.txt
@@ -0,0 +1,42 @@
+<Art and Accessory Curation, connectedTo, Building Code Compliance>
+<Art and Accessory Curation, connectedTo, Hospitality Interior Design>
+<Art and Accessory Curation, connectedTo, Lighting Design>
+<Art and Accessory Curation, connectedTo, Project Management>
+<Art and Accessory Curation, connectedTo, Smart Home Technology Integration>
+<Bedroom Design, connectedTo, Art and Accessory Curation>
+<Budget Management, connectedTo, Color Scheme Selection>
+<Building Code Compliance, connectedTo, Hospitality Interior Design>
+<Client Consultation, connectedTo, Retail Interior Design>
+<Color Scheme Selection, connectedTo, Bedroom Design>
+<Commercial Interior Design, connectedTo, Installation Supervision>
+<Commercial Interior Design, connectedTo, Wall Treatment Selection>
+<Contractor Coordination, connectedTo, Mood Board Creation>
+<Contractor Coordination, partOf, Ventilation Planning>
+<Ergonomics Integration, connectedTo, Commercial Interior Design>
+<Ergonomics Integration, partOf, Space Planning>
+<Furniture Selection, connectedTo, Living Room Design>
+<Furniture Selection, partOf, Space Planning>
+<Healthcare Interior Design, connectedTo, Client Consultation>
+<Hospitality Interior Design, connectedTo, Installation Supervision>
+<Hospitality Interior Design, connectedTo, Universal Design Principles>
+<Installation Supervision, connectedTo, Project Management>
+<Kitchen Design, connectedTo, Furniture Selection>
+<Kitchen Design, partOf, Space Planning>
+<Lighting Design, connectedTo, Installation Supervision>
+<Living Room Design, connectedTo, Ergonomics Integration>
+<Living Room Design, partOf, Space Planning>
+<Mood Board Creation, connectedTo, Commercial Interior Design>
+<Mood Board Creation, partOf, Ventilation Planning>
+<Project Management, connectedTo, Smart Home Technology Integration>
+<Retail Interior Design, connectedTo, Lighting Design>
+<Smart Home Technology Integration, connectedTo, end>
+<Universal Design Principles, connectedTo, Commercial Interior Design>
+<Universal Design Principles, connectedTo, Kitchen Design>
+<Universal Design Principles, connectedTo, Lighting Design>
+<Universal Design Principles, connectedTo, Project Management>
+<Wall Treatment Selection, connectedTo, Contractor Coordination>
+<Wall Treatment Selection, connectedTo, Healthcare Interior Design>
+<Wall Treatment Selection, connectedTo, Installation Supervision>
+<Wall Treatment Selection, connectedTo, Lighting Design>
+<start, connectedTo, Budget Management>
+<start, connectedTo, Lighting Design>
diff --git a/train/mermaid/hard/mermaid_697.mmd b/train/mermaid/hard/mermaid_697.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3c648a8636adbbae6fa1c0acae3f46ae7d78ee47
--- /dev/null
+++ b/train/mermaid/hard/mermaid_697.mmd
@@ -0,0 +1,108 @@
+graph TD
+    N0([Language Detection])
+    N1{Technical Manual Translation}
+    N2[[Multimodal Translation]]
+    N3[(Meeting Translation Systems)]
+    N4(Live Event Translation)
+    N5[(Legal Document Translation)]
+    N6(Speech Recognition)
+    N7[Subtitling Generation]
+    N8(Cross_Lingual Communication)
+    N9([Offline Translation Capabilities])
+    N10{Machine Translation Engine}
+    N11[[Simultaneous Interpretation]]
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Consecutive Interpretation
+        nest0_0[[Medical Translation]]
+        nest0_1[Rule_Based Machine Translation]
+    end
+    subgraph Contextual Understanding
+        nest1_0([Wearable Translation Devices])
+        nest1_1[Neural Machine Translation]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    nest0_0 -.-> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 --> N8
+    nest1_0 --> nest1_1
+    N8 --> nest1_0
+    nest1_1 -.-> N6
+    N3 --> S0
+    S0 -.-> N5
+    S0 -.-> N11
+    N2 --> S1
+    S1 -.-> N6
+    S1 -.-> N10
+    N3 --> |learns| M1
+    N2 -.-> M1
+    N0 -.-> M1
+    M1 -.-> N5
+    N2 --> M2
+    N1 -.-> M2
+    N0 --> M2
+    M2 -.-> N4
+    style N0 fill:#F9FBE7,stroke:#DCE775
+    style N1 fill:#F9FBE7,stroke:#DCE775
+    style N2 fill:#F9FBE7,stroke:#DCE775
+    style N3 fill:#FFEBEE,stroke:#E57373
+    style N4 fill:#F9FBE7,stroke:#DCE775
+    style N5 fill:#C8EDFF,stroke:#82DAFF
+    style N6 fill:#FFEBEE,stroke:#E57373
+    style N7 fill:#F9FBE7,stroke:#DCE775
+    style N8 fill:#F9FBE7,stroke:#DCE775
+    style N9 fill:#F9FBE7,stroke:#DCE775
+    style N10 fill:#FFEBEE,stroke:#E57373
+    style N11 fill:#C8EDFF,stroke:#82DAFF
+    style S0 fill:#F9FBE7,stroke:#DCE775
+    style S1 fill:#FFEBEE,stroke:#E57373
+    style M1 fill:#FFEBEE,stroke:#E57373
+    style M2 fill:#F9FBE7,stroke:#DCE775
+    style nest0_0 fill:#F9FBE7,stroke:#DCE775
+    style nest0_1 fill:#F9FBE7,stroke:#DCE775
+    style nest1_0 fill:#FFEBEE,stroke:#E57373
+    style nest1_1 fill:#C8EDFF,stroke:#82DAFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E57373,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_698.mmd b/train/mermaid/hard/mermaid_698.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2bf47a92ff70d585683b802b45c116d247b0e54f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_698.mmd
@@ -0,0 +1,121 @@
+graph BT
+    N0([start])
+    N1[Machine Translation Engine]
+    N2[Domain_Specific Translation Models]
+    N3[Text_to_Speech Synthesis]
+    N4[API Integration for Translation Services]
+    N5{Offline Translation Capabilities}
+    N6[/Continuous Learning Models for Translation/]
+    N7[Custom Vocabulary Integration]
+    N8[Contextual Understanding]
+    N9[/Speech Recognition/]
+    N10[[Data Security for Translated Content]]
+    N11(Accent Adaptation)
+    N12(Consecutive Interpretation)
+    N13{Real_Time Captioning}
+    N14([Language Detection])
+    N15{Emotion Detection in Speech}
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Pronunciation Correction
+        nest0_0([Multimodal Translation])
+        nest0_1[/Live Event Translation/]
+    end
+    subgraph Statistical Machine Translation
+        nest1_0[[Customer Support Translation]]
+        nest1_1[[Legal Document Translation]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    N6 --> nest0_0
+    nest0_1 -.-> N4
+    nest1_0 --> nest1_1
+    N14 -.-> nest1_0
+    nest1_1 -.-> N4
+    N8 --> S0
+    S0 --> N11
+    S0 -.-> N14
+    N13 --> S1
+    S1 --> N16
+    S1 --> N15
+    N7 -.-> S2
+    S2 -.-> N10
+    S2 -.-> N11
+    N6 -.-> M0
+    N3 --> M0
+    N2 --> M0
+    M0 --> N8
+    N2 -.-> M1
+    N1 -.-> M1
+    M1 --> N4
+    N1 --> M2
+    N0 --> M2
+    M2 -.-> N3
+    style S0 fill:#D7CCC8,stroke:#795548
+    style S1 fill:#D7CCC8,stroke:#795548
+    style S2 fill:#FFF3E0,stroke:#FFB74D
+    style M0 fill:#D1C4E9,stroke:#673AB7
+    style M1 fill:#D1C4E9,stroke:#673AB7
+    style M2 fill:#D1C4E9,stroke:#673AB7
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#795548,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_699.mmd b/train/mermaid/hard/mermaid_699.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1eac62744677ffa38c172e8c564e17f02efb4155
--- /dev/null
+++ b/train/mermaid/hard/mermaid_699.mmd
@@ -0,0 +1,96 @@
+graph LR
+    N0([Emotion Detection in Speech])
+    N1(Machine Translation Engine)
+    N2{Data Security for Translated Content}
+    N3[[Text_to_Speech Synthesis]]
+    N4[Accent Adaptation]
+    N5[Pronunciation Correction]
+    N6[Language Detection]
+    N7[(Contextual Understanding)]
+    S0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Low_Latency Processing
+        nest0_0[[Simultaneous Interpretation]]
+        nest0_1[/Noise Reduction for Speech Input/]
+        nest0_2[/Live Event Translation/]
+        nest0_3[Technical Manual Translation]
+    end
+    subgraph Tone Recognition
+        nest1_0[(Rule_Based Machine Translation)]
+        nest1_1{Neural Machine Translation}
+        nest1_2(Customer Support Translation)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> |optimizes| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N6 -.-> nest0_0
+    nest0_3 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N2 -.-> nest1_0
+    nest1_2 -.-> N2
+    N1 --> S0
+    S0 -.-> N5
+    S0 --> N7
+    S0 -.-> N4
+    N0 -.-> M1
+    N2 --> M1
+    N3 -.-> M1
+    M1 --> N5
+    N0 --> M2
+    N3 -.-> M2
+    M2 -.-> N5
+    style N0 fill:#C2E8E6,stroke:#61CAC3
+    style N1 fill:#FCFCE7,stroke:#DCE775
+    style N2 fill:#C8EDFF,stroke:#82DAFF
+    style N3 fill:#C2E8E6,stroke:#61CAC3
+    style N4 fill:#FCFCE7,stroke:#DCE775
+    style N5 fill:#C8EDFF,stroke:#82DAFF
+    style N6 fill:#C2E8E6,stroke:#61CAC3
+    style N7 fill:#C8EDFF,stroke:#82DAFF
+    style S0 fill:#C8EDFF,stroke:#82DAFF
+    style M1 fill:#FCFCE7,stroke:#DCE775
+    style M2 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_1 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_2 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_3 fill:#FCFCE7,stroke:#DCE775
+    style nest1_0 fill:#FCFCE7,stroke:#DCE775
+    style nest1_1 fill:#FCFCE7,stroke:#DCE775
+    style nest1_2 fill:#C2E8E6,stroke:#61CAC3
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#61CAC3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#82DAFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_7.mmd b/train/mermaid/hard/mermaid_7.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5dda00e455e30e171c1b034ee2d172f60b18dea6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_7.mmd
@@ -0,0 +1,126 @@
+graph LR
+    N0([Treasury Management])
+    N1[(Account Verification)]
+    N2{Credit Card Application}
+    N3{AML Screening}
+    N4[Merger and Acquisition]
+    N5[[KYC Validation]]
+    N6[Market Analysis]
+    N7{Securities Trading}
+    N8[[IPO Launch]]
+    N9[[Payment Gateway Integration]]
+    N10[/Asset Management/]
+    N11[[Investment Planning]]
+    N12[(Underwriting)]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Customer Onboarding
+        nest0_0(Venture Capital Funding)
+        nest0_1([Dispute Resolution])
+    end
+    subgraph Debt Collection
+        nest1_0([Transaction Logging])
+        nest1_1[Tax Preparation]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    nest0_0 --> |underwrites| nest0_1
+    N3 -.-> nest0_0
+    nest0_1 --> N12
+    nest1_0 -.-> nest1_1
+    N1 --> nest1_0
+    nest1_1 -.-> N12
+    N5 --> S0
+    S0 -.-> N8
+    S0 --> N10
+    N8 --> S1
+    S1 -.-> N13
+    S1 -.-> N10
+    S1 -.-> N11
+    N2 -.-> M0
+    N4 -.-> |disburses| M0
+    N1 --> M0
+    M0 --> N7
+    N5 --> M1
+    N3 -.-> M1
+    N0 -.-> M1
+    M1 --> N8
+    N0 -.-> M2
+    N2 --> M2
+    M2 -.-> N5
+    style N0 fill:#C5CAE9,stroke:#3F51B5
+    style N1 fill:#FFE88D,stroke:#FFDA4E
+    style N2 fill:#FFE88D,stroke:#FFDA4E
+    style N3 fill:#E9F7E8,stroke:#6EB76D
+    style N4 fill:#E9F7E8,stroke:#6EB76D
+    style N5 fill:#FFE88D,stroke:#FFDA4E
+    style N6 fill:#E9F7E8,stroke:#6EB76D
+    style N7 fill:#C5CAE9,stroke:#3F51B5
+    style N8 fill:#E9F7E8,stroke:#6EB76D
+    style N9 fill:#FFE88D,stroke:#FFDA4E
+    style N10 fill:#C5CAE9,stroke:#3F51B5
+    style N11 fill:#C5CAE9,stroke:#3F51B5
+    style N12 fill:#FFE88D,stroke:#FFDA4E
+    style N13 fill:#FFE88D,stroke:#FFDA4E
+    style S0 fill:#E9F7E8,stroke:#6EB76D
+    style S1 fill:#C5CAE9,stroke:#3F51B5
+    style M0 fill:#FFE88D,stroke:#FFDA4E
+    style M1 fill:#E9F7E8,stroke:#6EB76D
+    style M2 fill:#C5CAE9,stroke:#3F51B5
+    style nest0_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_0 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_1 fill:#C5CAE9,stroke:#3F51B5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#3F51B5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_700.mmd b/train/mermaid/hard/mermaid_700.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..eeb35288bac86564a5dcdfc7559952e43d6487dc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_700.mmd
@@ -0,0 +1,95 @@
+graph TD
+    N0([start])
+    N1[(Machine Translation Engine)]
+    N2[Social Media Translation]
+    N3(Domain_Specific Translation Models)
+    N4[(Glossary Management)]
+    N5[(Pronunciation Correction)]
+    N6{Speech Recognition}
+    N7([Contextual Understanding])
+    N8(Neural Machine Translation)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Consecutive Interpretation
+        nest0_0[(Technical Manual Translation)]
+        nest0_1[[Simultaneous Interpretation]]
+        nest0_2[/Text_to_Speech Synthesis/]
+        nest0_3(Meeting Translation Systems)
+    end
+    subgraph Real_Time Document Translation
+        nest1_0[(Tone Recognition)]
+        nest1_1{Offline Translation Capabilities}
+        nest1_2{Low_Latency Processing}
+        nest1_3[Legal Document Translation]
+    end
+    N0 --> |yes| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N2 --> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 -.-> |no| nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N1 --> nest1_0
+    nest1_3 -.-> N8
+    N5 -.-> S0
+    S0 --> N8
+    S0 --> N7
+    N0 --> S1
+    S1 --> N7
+    S1 -.-> N2
+    N5 -.-> M0
+    N0 -.-> M0
+    N1 -.-> M0
+    M0 -.-> N7
+    N3 -.-> M1
+    N2 -.-> M1
+    N1 --> M1
+    M1 -.-> N7
+    style S0 fill:#F9FBE7,stroke:#DCE775
+    style S1 fill:#E6EE9C,stroke:#CDDC39
+    style M0 fill:#F9FBE7,stroke:#DCE775
+    style M1 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFD54F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_701.mmd b/train/mermaid/hard/mermaid_701.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1f29ba935fa0c6c6da32909e9e241ed54be9721f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_701.mmd
@@ -0,0 +1,97 @@
+graph LR
+    N0([start])
+    N1[(Speaker Diarization)]
+    N2[Dialect Recognition]
+    N3[[Domain_Specific Translation Models]]
+    N4[Real_Time Document Translation]
+    N5[Accent Adaptation]
+    N6[(Custom Vocabulary Integration)]
+    N7(Technical Manual Translation)
+    N8(Contextual Understanding)
+    N9[Machine Translation Engine]
+    N10[/Voice Biometrics/]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Sentiment Analysis in Translation
+        nest0_0([Legal Document Translation])
+        nest0_1[(Tone Recognition)]
+    end
+    subgraph Consecutive Interpretation
+        nest1_0[/Simultaneous Interpretation/]
+        nest1_1(Emotion Detection in Speech)
+        nest1_2(Subtitling Generation)
+        nest1_3[(Neural Machine Translation)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> |no| N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    N7 --> nest0_0
+    nest0_1 --> |no| N2
+    nest1_0 -.-> |no| nest1_1
+    nest1_1 -.-> |no| nest1_2
+    nest1_2 -.-> nest1_3
+    N4 -.-> nest1_0
+    nest1_3 --> N1
+    N6 --> S0
+    S0 --> N8
+    S0 --> N9
+    S0 --> N10
+    N1 -.-> S1
+    S1 -.-> N4
+    S1 -.-> N8
+    N1 -.-> S2
+    S2 -.-> |yes| N8
+    S2 -.-> N7
+    N2 -.-> M1
+    N5 --> M1
+    N1 --> M1
+    N0 --> M1
+    M1 --> N9
+    style S0 fill:#F9FBE7,stroke:#C0CA33
+    style S1 fill:#F9FBE7,stroke:#C0CA33
+    style S2 fill:#CFD8DC,stroke:#607D8B
+    style M1 fill:#F8FDD3,stroke:#D3EB9F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#D3EB9F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_701.txt b/train/mermaid/hard/mermaid_701.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4b4dd1789d040b6d21d4de56db0e890773634a73
--- /dev/null
+++ b/train/mermaid/hard/mermaid_701.txt
@@ -0,0 +1,35 @@
+<Accent Adaptation, connectedTo, Machine Translation Engine>
+<Accent Adaptation, no, Custom Vocabulary Integration>
+<Contextual Understanding, connectedTo, Machine Translation Engine>
+<Custom Vocabulary Integration, connectedTo, Contextual Understanding>
+<Custom Vocabulary Integration, connectedTo, Machine Translation Engine>
+<Custom Vocabulary Integration, connectedTo, Technical Manual Translation>
+<Custom Vocabulary Integration, connectedTo, Voice Biometrics>
+<Dialect Recognition, connectedTo, Domain_Specific Translation Models>
+<Dialect Recognition, connectedTo, Machine Translation Engine>
+<Domain_Specific Translation Models, connectedTo, Real_Time Document Translation>
+<Emotion Detection in Speech, no, Subtitling Generation>
+<Emotion Detection in Speech, partOf, Consecutive Interpretation>
+<Legal Document Translation, connectedTo, Tone Recognition>
+<Legal Document Translation, partOf, Sentiment Analysis in Translation>
+<Machine Translation Engine, connectedTo, Voice Biometrics>
+<Neural Machine Translation, connectedTo, Speaker Diarization>
+<Neural Machine Translation, partOf, Consecutive Interpretation>
+<Real_Time Document Translation, connectedTo, Accent Adaptation>
+<Real_Time Document Translation, connectedTo, Simultaneous Interpretation>
+<Simultaneous Interpretation, no, Emotion Detection in Speech>
+<Simultaneous Interpretation, partOf, Consecutive Interpretation>
+<Speaker Diarization, connectedTo, Contextual Understanding>
+<Speaker Diarization, connectedTo, Dialect Recognition>
+<Speaker Diarization, connectedTo, Machine Translation Engine>
+<Speaker Diarization, connectedTo, Real_Time Document Translation>
+<Speaker Diarization, connectedTo, Technical Manual Translation>
+<Speaker Diarization, yes, Contextual Understanding>
+<Subtitling Generation, connectedTo, Neural Machine Translation>
+<Subtitling Generation, partOf, Consecutive Interpretation>
+<Technical Manual Translation, connectedTo, Contextual Understanding>
+<Technical Manual Translation, connectedTo, Legal Document Translation>
+<Tone Recognition, no, Dialect Recognition>
+<Tone Recognition, partOf, Sentiment Analysis in Translation>
+<start, connectedTo, Machine Translation Engine>
+<start, connectedTo, Speaker Diarization>
diff --git a/train/mermaid/hard/mermaid_703.txt b/train/mermaid/hard/mermaid_703.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8ebe1bdcdfe083578acee56701dc5d1e2da9adff
--- /dev/null
+++ b/train/mermaid/hard/mermaid_703.txt
@@ -0,0 +1,41 @@
+<Consecutive Interpretation, connectedTo, Real_Time Captioning>
+<Consecutive Interpretation, connectedTo, Social Media Translation>
+<Contextual Understanding, recognizes, Emotion Detection in Speech>
+<Cross_Lingual Communication, connectedTo, Statistical Machine Translation>
+<Cross_Lingual Communication, partOf, Text_to_Speech Synthesis>
+<Custom Vocabulary Integration, connectedTo, Low_Latency Processing>
+<Custom Vocabulary Integration, partOf, Speech Recognition>
+<Customer Support Translation, connectedTo, Consecutive Interpretation>
+<Customer Support Translation, connectedTo, Data Security for Translated Content>
+<Customer Support Translation, connectedTo, Offline Translation Capabilities>
+<Customer Support Translation, connectedTo, Technical Manual Translation>
+<Customer Support Translation, detects, Emotion Detection in Speech>
+<Data Security for Translated Content, connectedTo, Contextual Understanding>
+<Data Security for Translated Content, connectedTo, Emotion Detection in Speech>
+<Dialect Recognition, interprets, Speaker Diarization>
+<Emotion Detection in Speech, blocks, Offline Translation Capabilities>
+<Glossary Management, connectedTo, Offline Translation Capabilities>
+<Glossary Management, partOf, Speech Recognition>
+<Live Event Translation, connectedTo, Dialect Recognition>
+<Live Event Translation, connectedTo, Social Media Translation>
+<Live Event Translation, connectedTo, Technical Manual Translation>
+<Live Event Translation, connectedTo, Voice Biometrics>
+<Live Event Translation, customizes, Speaker Diarization>
+<Low_Latency Processing, connectedTo, Multimodal Translation>
+<Low_Latency Processing, partOf, Speech Recognition>
+<Medical Translation, connectedTo, Consecutive Interpretation>
+<Medical Translation, connectedTo, Pronunciation Correction>
+<Multimodal Translation, connectedTo, Glossary Management>
+<Multimodal Translation, partOf, Speech Recognition>
+<Offline Translation Capabilities, connectedTo, Custom Vocabulary Integration>
+<Offline Translation Capabilities, connectedTo, Medical Translation>
+<Offline Translation Capabilities, connectedTo, Social Media Translation>
+<Pronunciation Correction, connectedTo, Cross_Lingual Communication>
+<Pronunciation Correction, partOf, Text_to_Speech Synthesis>
+<Real_Time Captioning, connectedTo, Live Event Translation>
+<Social Media Translation, connectedTo, Technical Manual Translation>
+<Speaker Diarization, connectedTo, Sentiment Analysis in Translation>
+<Statistical Machine Translation, connectedTo, Live Event Translation>
+<Statistical Machine Translation, partOf, Text_to_Speech Synthesis>
+<Technical Manual Translation, connectedTo, Voice Biometrics>
+<Voice Biometrics, connectedTo, Dialect Recognition>
diff --git a/train/mermaid/hard/mermaid_705.mmd b/train/mermaid/hard/mermaid_705.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3c986b1327b5c89574e00d24286058d4360af866
--- /dev/null
+++ b/train/mermaid/hard/mermaid_705.mmd
@@ -0,0 +1,94 @@
+graph TD
+    N0([start])
+    N1[Drone Regulations Compliance]
+    N2[[Search and Rescue Operations]]
+    N3(Ethical Drone Use)
+    N4(AI for Drone Autonomy)
+    N5(Communication Systems)
+    N6([Propeller Design])
+    N7{Wildlife Tracking}
+    N8(Videography)
+    N9{Thermal Imaging with Drones}
+    N10[(Drone Data Security)]
+    N11[Sensor Integration]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Counter_Drone Systems
+        nest0_0[Battery Management System]
+        nest0_1(Payload Customization)
+    end
+    subgraph Delivery Services
+        nest1_0[(Navigation System)]
+        nest1_1[(Aerial Photography)]
+        nest1_2([Collision Avoidance Systems])
+        nest1_3([Precision Agriculture])
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |no| N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    N9 --> nest0_0
+    nest0_1 --> N3
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N4 --> nest1_0
+    nest1_3 --> |no| N8
+    N8 -.-> S0
+    S0 -.-> N10
+    S0 --> N11
+    N8 -.-> S1
+    S1 -.-> N10
+    S1 -.-> N11
+    N5 --> M0
+    N1 --> M0
+    M0 --> N7
+    N1 -.-> M2
+    N3 -.-> M2
+    M2 -.-> N6
+    style S0 fill:#FFEBEE,stroke:#E57373
+    style S1 fill:#F8FDD3,stroke:#D3EB9F
+    style M0 fill:#E8F0FF,stroke:#A2D0FF
+    style M2 fill:#F8FDD3,stroke:#D3EB9F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A2D0FF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_706.txt b/train/mermaid/hard/mermaid_706.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fd62f771b4c16bae609cb801f6dbd1e721b3edf8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_706.txt
@@ -0,0 +1,30 @@
+<3D Modeling from Drone Data, connectedTo, Drone Maintenance>
+<3D Modeling from Drone Data, connectedTo, Payload Customization>
+<Autonomous Flight, connectedTo, Collision Avoidance Systems>
+<Autonomous Flight, partOf, Drone Delivery Logistics>
+<Battery Management System, connectedTo, 3D Modeling from Drone Data>
+<Battery Management System, no, Autonomous Flight>
+<Collision Avoidance Systems, connectedTo, Security Surveillance>
+<Collision Avoidance Systems, partOf, Drone Delivery Logistics>
+<Data Processing from Drones, connectedTo, Thermal Imaging with Drones>
+<Drone Data Security, connectedTo, Counter_Drone Systems>
+<Drone Design, connectedTo, 3D Modeling from Drone Data>
+<Drone Design, connectedTo, Drone Data Security>
+<Drone Design, partOf, Flight Control System>
+<Drone Maintenance, connectedTo, Data Processing from Drones>
+<Drone Maintenance, connectedTo, Security Surveillance>
+<Geofencing Implementation, connectedTo, Propulsion System Development>
+<Payload Customization, connectedTo, Drone Design>
+<Payload Customization, partOf, Flight Control System>
+<Payload Integration, connectedTo, Drone Data Security>
+<Propulsion System Development, connectedTo, Swarm Robotics for Drones>
+<Security Surveillance, connectedTo, Drone Maintenance>
+<Security Surveillance, connectedTo, Thermal Imaging with Drones>
+<Security Surveillance, partOf, Drone Delivery Logistics>
+<Swarm Robotics for Drones, connectedTo, Battery Management System>
+<Thermal Imaging with Drones, connectedTo, Counter_Drone Systems>
+<Thermal Imaging with Drones, connectedTo, Drone Data Security>
+<Thermal Imaging with Drones, connectedTo, Payload Customization>
+<Thermal Imaging with Drones, connectedTo, Payload Integration>
+<start, connectedTo, 3D Modeling from Drone Data>
+<start, connectedTo, Geofencing Implementation>
diff --git a/train/mermaid/hard/mermaid_709.mmd b/train/mermaid/hard/mermaid_709.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8b9e84159a35685b12a38bae6678c6e9931f4ce6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_709.mmd
@@ -0,0 +1,106 @@
+graph TD
+    N0([Security Surveillance])
+    N1[[Communication Systems]]
+    N2{Data Processing from Drones}
+    N3{Sensor Integration}
+    N4(3D Modeling from Drone Data)
+    N5[[Propeller Design]]
+    N6{Swarm Robotics for Drones}
+    N7[(Payload Integration)]
+    N8[/Mapping and Surveying/]
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Drone Design
+        nest0_0[Ground Control Station Development]
+        nest0_1[/Precision Agriculture/]
+        nest0_2[Navigation System]
+        nest0_3(Thermal Imaging with Drones)
+    end
+    subgraph Flight Planning Software
+        nest1_0[Drone Delivery Logistics]
+        nest1_1[Payload Customization]
+        nest1_2[Inspection]
+        nest1_3[[Videography]]
+    end
+    N0 -.-> |educates| N1
+    N1 --> N2
+    N2 --> |repairs| N3
+    N3 --> N4
+    N4 --> |permits| N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N2 --> nest0_0
+    nest0_3 -.-> N3
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N7 --> nest1_0
+    nest1_3 --> N1
+    N0 --> S1
+    S1 -.-> N6
+    S1 --> N8
+    S1 -.-> |optimizes| N2
+    N0 --> M0
+    N2 -.-> M0
+    N1 --> |surveys| M0
+    M0 -.-> N4
+    N2 --> M2
+    N4 -.-> M2
+    N1 -.-> M2
+    M2 --> N7
+    style N0 fill:#FFF0CC,stroke:#FFCC80
+    style N1 fill:#F0F0F0,stroke:#D2D2D2
+    style N2 fill:#FFF0CC,stroke:#FFCC80
+    style N3 fill:#BBDEFB,stroke:#2196F3
+    style N4 fill:#FFF0CC,stroke:#FFCC80
+    style N5 fill:#F0F0F0,stroke:#D2D2D2
+    style N6 fill:#F0F0F0,stroke:#D2D2D2
+    style N7 fill:#BBDEFB,stroke:#2196F3
+    style N8 fill:#F0F0F0,stroke:#D2D2D2
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style M0 fill:#F0F0F0,stroke:#D2D2D2
+    style M2 fill:#BBDEFB,stroke:#2196F3
+    style nest0_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_1 fill:#FFF0CC,stroke:#FFCC80
+    style nest0_2 fill:#BBDEFB,stroke:#2196F3
+    style nest0_3 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_1 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_3 fill:#FFF0CC,stroke:#FFCC80
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#2196F3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_709.txt b/train/mermaid/hard/mermaid_709.txt
new file mode 100644
index 0000000000000000000000000000000000000000..deeac586f5d930501ad4b1023f8274eab491bcda
--- /dev/null
+++ b/train/mermaid/hard/mermaid_709.txt
@@ -0,0 +1,35 @@
+<3D Modeling from Drone Data, connectedTo, Payload Integration>
+<3D Modeling from Drone Data, permits, Propeller Design>
+<Communication Systems, connectedTo, Data Processing from Drones>
+<Communication Systems, connectedTo, Payload Integration>
+<Communication Systems, surveys, 3D Modeling from Drone Data>
+<Data Processing from Drones, connectedTo, 3D Modeling from Drone Data>
+<Data Processing from Drones, connectedTo, Ground Control Station Development>
+<Data Processing from Drones, connectedTo, Payload Integration>
+<Data Processing from Drones, repairs, Sensor Integration>
+<Drone Delivery Logistics, connectedTo, Payload Customization>
+<Drone Delivery Logistics, partOf, Flight Planning Software>
+<Ground Control Station Development, connectedTo, Precision Agriculture>
+<Ground Control Station Development, partOf, Drone Design>
+<Inspection, connectedTo, Videography>
+<Inspection, partOf, Flight Planning Software>
+<Navigation System, connectedTo, Thermal Imaging with Drones>
+<Navigation System, partOf, Drone Design>
+<Payload Customization, connectedTo, Inspection>
+<Payload Customization, partOf, Flight Planning Software>
+<Payload Integration, connectedTo, Drone Delivery Logistics>
+<Payload Integration, connectedTo, Mapping and Surveying>
+<Precision Agriculture, connectedTo, Navigation System>
+<Precision Agriculture, partOf, Drone Design>
+<Propeller Design, connectedTo, Swarm Robotics for Drones>
+<Security Surveillance, connectedTo, 3D Modeling from Drone Data>
+<Security Surveillance, connectedTo, Mapping and Surveying>
+<Security Surveillance, connectedTo, Swarm Robotics for Drones>
+<Security Surveillance, educates, Communication Systems>
+<Security Surveillance, optimizes, Data Processing from Drones>
+<Sensor Integration, connectedTo, 3D Modeling from Drone Data>
+<Swarm Robotics for Drones, connectedTo, Payload Integration>
+<Thermal Imaging with Drones, connectedTo, Sensor Integration>
+<Thermal Imaging with Drones, partOf, Drone Design>
+<Videography, connectedTo, Communication Systems>
+<Videography, partOf, Flight Planning Software>
diff --git a/train/mermaid/hard/mermaid_71.mmd b/train/mermaid/hard/mermaid_71.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..70481214c8249fa0d4375d9b2276783a85ab1586
--- /dev/null
+++ b/train/mermaid/hard/mermaid_71.mmd
@@ -0,0 +1,118 @@
+graph TD
+    N0([start])
+    N1[/Cargo Tracking/]
+    N2[/Hub Transfer/]
+    N3[/Delivery Confirmation/]
+    N4[Inventory Sync]
+    N5(Damage Reporting)
+    N6[[Pallet Stacking]]
+    N7[/Proof of Delivery/]
+    N8[Carrier Selection]
+    N9[Fleet Maintenance Scheduling]
+    N10[(Ocean Freight Management)]
+    N11[/Consolidation/]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Last_mile Dispatch
+        nest0_0[/Rail Transport Coordination/]
+        nest0_1[[Demand Forecasting Integration]]
+        nest0_2(Customs Declaration)
+    end
+    subgraph Driver Check_in
+        nest1_0[(Route Assignment)]
+        nest1_1[(Invoice Matching)]
+        nest1_2(Warehouse Entry)
+        nest1_3{Delay Notification}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> |matches| N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    nest0_1 -.-> |picks up| nest0_2
+    N3 -.-> nest0_0
+    nest0_2 --> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 --> N1
+    N3 --> S0
+    S0 --> N6
+    S0 --> N7
+    N2 --> S1
+    S1 --> |manages| N9
+    S1 -.-> N6
+    N8 --> S2
+    S2 -.-> N10
+    S2 -.-> N11
+    N2 --> M0
+    N0 -.-> M0
+    N1 -.-> M0
+    M0 -.-> N4
+    style N0 fill:#E3F2FD,stroke:#64B5F6
+    style N1 fill:#FFF3E0,stroke:#FFB74D
+    style N2 fill:#FFF3E0,stroke:#FFB74D
+    style N3 fill:#FFF3E0,stroke:#FFB74D
+    style N4 fill:#E0F7FA,stroke:#00BCD4
+    style N5 fill:#E0F7FA,stroke:#00BCD4
+    style N6 fill:#E3F2FD,stroke:#64B5F6
+    style N7 fill:#E3F2FD,stroke:#64B5F6
+    style N8 fill:#FFF3E0,stroke:#FFB74D
+    style N9 fill:#E3F2FD,stroke:#64B5F6
+    style N10 fill:#E0F7FA,stroke:#00BCD4
+    style N11 fill:#E0F7FA,stroke:#00BCD4
+    style S0 fill:#E0F7FA,stroke:#00BCD4
+    style S1 fill:#FFF3E0,stroke:#FFB74D
+    style S2 fill:#FFF3E0,stroke:#FFB74D
+    style M0 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_1 fill:#FFF3E0,stroke:#FFB74D
+    style nest0_2 fill:#E3F2FD,stroke:#64B5F6
+    style nest1_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_1 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_2 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_3 fill:#E3F2FD,stroke:#64B5F6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_710.txt b/train/mermaid/hard/mermaid_710.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3831e0204ca343e2b8f8e97c1497575702ac2bf1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_710.txt
@@ -0,0 +1,39 @@
+<AI for Drone Autonomy, connectedTo, Geofencing Implementation>
+<AI for Drone Autonomy, connectedTo, Navigation System>
+<AI for Drone Autonomy, connectedTo, Precision Agriculture>
+<AI for Drone Autonomy, flies, Flight Control System>
+<Battery Management System, connectedTo, Inspection>
+<Collision Avoidance Systems, connectedTo, Flight Control System>
+<Collision Avoidance Systems, connectedTo, Flight Planning Software>
+<Delivery Services, monitors, Drone Maintenance>
+<Delivery Services, partOf, Payload Integration>
+<Drone Maintenance, connectedTo, Payload Customization>
+<Drone Maintenance, partOf, Payload Integration>
+<Endurance Optimization, connectedTo, Ethical Drone Use>
+<Ethical Drone Use, connectedTo, Security Surveillance>
+<Flight Control System, connectedTo, Delivery Services>
+<Flight Control System, connectedTo, end>
+<Flight Planning Software, connectedTo, Battery Management System>
+<Flight Planning Software, connectedTo, Thermal Imaging with Drones>
+<Flight Planning Software, connectedTo, end>
+<Flight Planning Software, optimizes, Thermal Imaging with Drones>
+<Geofencing Implementation, connectedTo, Flight Control System>
+<Geofencing Implementation, connectedTo, Inspection>
+<Geofencing Implementation, upgrades, Propeller Design>
+<Inspection, connectedTo, Flight Control System>
+<Inspection, connectedTo, Thermal Imaging with Drones>
+<Mapping and Surveying, connectedTo, Search and Rescue Operations>
+<Navigation System, connectedTo, Geofencing Implementation>
+<Navigation System, connectedTo, Thermal Imaging with Drones>
+<Payload Customization, connectedTo, Collision Avoidance Systems>
+<Payload Customization, partOf, Payload Integration>
+<Precision Agriculture, connectedTo, Mapping and Surveying>
+<Propeller Design, connectedTo, Collision Avoidance Systems>
+<Search and Rescue Operations, connectedTo, Navigation System>
+<Security Surveillance, connectedTo, AI for Drone Autonomy>
+<Security Surveillance, connectedTo, Swarm Robotics for Drones>
+<Swarm Robotics for Drones, connectedTo, Urban Air Mobility Planning>
+<Swarm Robotics for Drones, partOf, Videography>
+<Thermal Imaging with Drones, connectedTo, Flight Control System>
+<Urban Air Mobility Planning, connectedTo, Geofencing Implementation>
+<Urban Air Mobility Planning, partOf, Videography>
diff --git a/train/mermaid/hard/mermaid_713.txt b/train/mermaid/hard/mermaid_713.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b4c6b239619da244ec8217e5ff00bba9371d583b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_713.txt
@@ -0,0 +1,41 @@
+<Adaptive Cruise Control, connectedTo, Edge Computing for AVs>
+<Adaptive Cruise Control, connectedTo, Software Development>
+<Cloud Connectivity for AVs, connectedTo, Sensor Integration>
+<Cybersecurity for AVs, connectedTo, Remote Operation Capability>
+<Edge Computing for AVs, connectedTo, Map Data Management>
+<Edge Computing for AVs, connectedTo, Software Development>
+<Fail_Safe Systems, connectedTo, Predictive Maintenance>
+<Fail_Safe Systems, partOf, Lane Keeping Assist>
+<Fleet Management, connectedTo, Regulatory Compliance>
+<Hardware Design, connectedTo, Motion Control>
+<Hardware Design, partOf, Battery Management for EVs>
+<Insurance Models for AVs, connectedTo, Cloud Connectivity for AVs>
+<Insurance Models for AVs, manufactures, Simulation Environment Development>
+<Map Data Management, connectedTo, Over_the_Air Updates>
+<Map Data Management, connectedTo, Redundancy in Sensors>
+<Map Data Management, connectedTo, Software Development>
+<Map Data Management, connectedTo, Vehicle_to_Vehicle Communication>
+<Motion Control, connectedTo, Software Development>
+<Motion Control, partOf, Battery Management for EVs>
+<Object Detection and Classification, connectedTo, Hardware Design>
+<Object Detection and Classification, partOf, Battery Management for EVs>
+<Over_the_Air Updates, connectedTo, Software Development>
+<Over_the_Air Updates, responds, Object Detection and Classification>
+<Pedestrian Detection, connectedTo, Adaptive Cruise Control>
+<Pedestrian Detection, connectedTo, Cloud Connectivity for AVs>
+<Pedestrian Detection, connectedTo, Sensor Integration>
+<Pedestrian Detection, connectedTo, Vehicle Diagnostics>
+<Predictive Maintenance, connectedTo, Regulatory Compliance>
+<Predictive Maintenance, partOf, Lane Keeping Assist>
+<Public Acceptance and Trust, connectedTo, Fleet Management>
+<Redundancy in Sensors, connectedTo, end>
+<Regulatory Compliance, connectedTo, Insurance Models for AVs>
+<Remote Operation Capability, connectedTo, Fail_Safe Systems>
+<Remote Operation Capability, plans, Redundancy in Sensors>
+<Sensor Integration, optimizes, Vehicle Diagnostics>
+<Simulation Environment Development, drives, Cybersecurity for AVs>
+<Software Development, connectedTo, Public Acceptance and Trust>
+<Vehicle Diagnostics, connectedTo, Simulation Environment Development>
+<Vehicle_to_Vehicle Communication, connectedTo, Over_the_Air Updates>
+<Vehicle_to_Vehicle Communication, connectedTo, Simulation Environment Development>
+<Vehicle_to_Vehicle Communication, connectedTo, Software Development>
diff --git a/train/mermaid/hard/mermaid_714.txt b/train/mermaid/hard/mermaid_714.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9641ecd3530fa75dc1ae7c0f2351fbfeadef2ac0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_714.txt
@@ -0,0 +1,32 @@
+<Accident Reconstruction for AVs, connectedTo, Regulatory Compliance>
+<Accident Reconstruction for AVs, partOf, Over_the_Air Updates>
+<Adaptive Cruise Control, connectedTo, Public Acceptance and Trust>
+<Adaptive Cruise Control, partOf, Perception System>
+<Automatic Emergency Braking, assembles, Localization and Mapping>
+<Automatic Emergency Braking, connectedTo, Battery Management for EVs>
+<Automatic Emergency Braking, connectedTo, Localization and Mapping>
+<Automatic Emergency Braking, connectedTo, Motion Control>
+<Battery Management for EVs, connectedTo, Hardware Design>
+<Battery Management for EVs, connectedTo, Localization and Mapping>
+<Battery Management for EVs, connectedTo, Motion Control>
+<Battery Management for EVs, connectedTo, Traffic Sign Recognition>
+<Cloud Connectivity for AVs, connectedTo, Traffic Sign Recognition>
+<Cybersecurity for AVs, connectedTo, Accident Reconstruction for AVs>
+<Cybersecurity for AVs, partOf, Over_the_Air Updates>
+<Ethical Decision_Making, diagnoses, Human_Machine Interface>
+<Hardware Design, connectedTo, Adaptive Cruise Control>
+<Hardware Design, connectedTo, Vehicle_to_Vehicle Communication>
+<Human_Machine Interface, connectedTo, Cloud Connectivity for AVs>
+<Localization and Mapping, connectedTo, Vehicle Diagnostics>
+<Motion Control, connectedTo, Ethical Decision_Making>
+<Public Acceptance and Trust, connectedTo, Sensor Integration>
+<Public Acceptance and Trust, partOf, Perception System>
+<Regulatory Compliance, connectedTo, Battery Management for EVs>
+<Regulatory Compliance, partOf, Over_the_Air Updates>
+<Sensor Integration, connectedTo, Vehicle Diagnostics>
+<Sensor Integration, partOf, Perception System>
+<Vehicle Diagnostics, connectedTo, Cybersecurity for AVs>
+<Vehicle Diagnostics, connectedTo, Hardware Design>
+<Vehicle_to_Vehicle Communication, connectedTo, Motion Control>
+<start, connectedTo, Automatic Emergency Braking>
+<start, connectedTo, Localization and Mapping>
diff --git a/train/mermaid/hard/mermaid_718.mmd b/train/mermaid/hard/mermaid_718.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..35efcbcbbb45ff10d8a9227737022483e0ec3b40
--- /dev/null
+++ b/train/mermaid/hard/mermaid_718.mmd
@@ -0,0 +1,114 @@
+graph LR
+    N0([Parking Assistance Systems])
+    N1[Fleet Management]
+    N2(Pedestrian Detection)
+    N3[[Human_Machine Interface]]
+    N4[Decision_Making Algorithms]
+    N5[(Adaptive Cruise Control)]
+    N6(Battery Management for EVs)
+    N7[[Localization and Mapping]]
+    N8[Charging Infrastructure]
+    N9(Insurance Models for AVs)
+    N10(Simulation Environment Development)
+    N11[[Lane Keeping Assist]]
+    N12(Ethical Decision_Making)
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Vehicle_to_Vehicle Communication
+        nest0_0(Regulatory Compliance)
+        nest0_1{Public Acceptance and Trust}
+        nest0_2(Vehicle_to_Infrastructure Communication)
+        nest0_3(Software Development)
+    end
+    subgraph Driver Monitoring Systems
+        nest1_0{Cybersecurity for AVs}
+        nest1_1(Cloud Connectivity for AVs)
+        nest1_2[/Remote Operation Capability/]
+    end
+    N0 -.-> |communicates| N1
+    N1 -.-> N2
+    N2 --> |assembles| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 --> nest0_0
+    nest0_3 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 --> N4
+    N1 -.-> S0
+    S0 -.-> N9
+    S0 --> N3
+    S0 --> N12
+    N2 --> S1
+    S1 -.-> N12
+    S1 -.-> N10
+    N2 -.-> M1
+    N6 --> M1
+    M1 --> N11
+    style N0 fill:#FDFCEB,stroke:#EAEFA5
+    style N1 fill:#FFCDD2,stroke:#F44336
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#FDFCEB,stroke:#EAEFA5
+    style N4 fill:#ECCFF5,stroke:#CD8FF2
+    style N5 fill:#FFCDD2,stroke:#F44336
+    style N6 fill:#FFCDD2,stroke:#F44336
+    style N7 fill:#FFCDD2,stroke:#F44336
+    style N8 fill:#FDFCEB,stroke:#EAEFA5
+    style N9 fill:#ECCFF5,stroke:#CD8FF2
+    style N10 fill:#FFCDD2,stroke:#F44336
+    style N11 fill:#FFCDD2,stroke:#F44336
+    style N12 fill:#FDFCEB,stroke:#EAEFA5
+    style S0 fill:#FDFCEB,stroke:#EAEFA5
+    style S1 fill:#FDFCEB,stroke:#EAEFA5
+    style M1 fill:#ECCFF5,stroke:#CD8FF2
+    style nest0_0 fill:#FFCDD2,stroke:#F44336
+    style nest0_1 fill:#FFCDD2,stroke:#F44336
+    style nest0_2 fill:#FFCDD2,stroke:#F44336
+    style nest0_3 fill:#FDFCEB,stroke:#EAEFA5
+    style nest1_0 fill:#ECCFF5,stroke:#CD8FF2
+    style nest1_1 fill:#FDFCEB,stroke:#EAEFA5
+    style nest1_2 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_719.mmd b/train/mermaid/hard/mermaid_719.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a7ef84655ad3f092a11336b38b6e90eed80bbefd
--- /dev/null
+++ b/train/mermaid/hard/mermaid_719.mmd
@@ -0,0 +1,96 @@
+graph BT
+    N0([start])
+    N1(Fail_Safe Systems)
+    N2([Public Acceptance and Trust])
+    N3([Cloud Connectivity for AVs])
+    N4(Decision_Making Algorithms)
+    N5[[Fleet Management]]
+    N6[/Remote Operation Capability/]
+    N7[Motion Control]
+    N8(Insurance Models for AVs)
+    N9[[Sensor Integration]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Perception System
+        nest0_0{Data Collection and Annotation}
+        nest0_1[[Localization and Mapping]]
+        nest0_2[Parking Assistance Systems]
+        nest0_3{Cybersecurity for AVs}
+    end
+    subgraph Vehicle_to_Vehicle Communication
+        nest1_0[Map Data Management]
+        nest1_1(Simulation Environment Development)
+        nest1_2[/Redundancy in Sensors/]
+        nest1_3[/Adaptive Cruise Control/]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> |no| N3
+    N3 --> |no| N4
+    N4 -.-> N5
+    N5 --> |no| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N6 --> nest0_0
+    nest0_3 -.-> N6
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N5 --> nest1_0
+    nest1_3 --> N3
+    N5 --> S0
+    S0 -.-> N9
+    S0 -.-> N7
+    S0 --> |no| N8
+    N1 --> S1
+    S1 -.-> |no| N9
+    S1 -.-> N8
+    N6 --> S2
+    S2 --> N8
+    S2 -.-> |yes| N9
+    N1 --> M0
+    N0 --> M0
+    M0 --> N3
+    style S0 fill:#EDE7F6,stroke:#9575CD
+    style S1 fill:#FFFAE0,stroke:#FFE470
+    style S2 fill:#EDE7F6,stroke:#9575CD
+    style M0 fill:#FFFAE0,stroke:#FFE470
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_72.txt b/train/mermaid/hard/mermaid_72.txt
new file mode 100644
index 0000000000000000000000000000000000000000..92ef17da8c93634e1fbc5e859b2bc991e84fe152
--- /dev/null
+++ b/train/mermaid/hard/mermaid_72.txt
@@ -0,0 +1,40 @@
+<Air Cargo Handling, connectedTo, Hazardous Material Transport>
+<Air Cargo Handling, partOf, Supply Chain Visibility>
+<Barcode Scanning, connectedTo, Delivery Confirmation>
+<Barcode Scanning, partOf, Container Loading>
+<Cargo Tracking, no, Freight Booking>
+<Customs Declaration, connectedTo, Deconsolidation>
+<Damage Reporting, connectedTo, Cargo Tracking>
+<Damage Reporting, connectedTo, Freight Booking>
+<Damage Reporting, connectedTo, end>
+<Deconsolidation, connectedTo, Driver Check_in>
+<Delay Notification, connectedTo, Return Logistics>
+<Delay Notification, connectedTo, Route Optimization Software>
+<Delivery Confirmation, connectedTo, Damage Reporting>
+<Delivery Confirmation, partOf, Container Loading>
+<Driver Check_in, connectedTo, Cargo Tracking>
+<Driver Check_in, connectedTo, Damage Reporting>
+<Driver Check_in, connectedTo, Freight Booking>
+<Driver Check_in, connectedTo, end>
+<Freight Booking, connectedTo, end>
+<Global Trade Compliance, connectedTo, Air Cargo Handling>
+<Global Trade Compliance, yes, Yard Management>
+<Hazardous Material Transport, connectedTo, Last_mile Dispatch>
+<Hazardous Material Transport, partOf, Supply Chain Visibility>
+<Invoice Matching, connectedTo, Customs Declaration>
+<Invoice Matching, connectedTo, Damage Reporting>
+<Invoice Matching, connectedTo, Package Labeling>
+<Last_mile Dispatch, connectedTo, Global Trade Compliance>
+<Last_mile Dispatch, partOf, Supply Chain Visibility>
+<Package Labeling, connectedTo, Proof of Delivery>
+<Proof of Delivery, connectedTo, Customs Declaration>
+<Proof of Delivery, yes, Rail Transport Coordination>
+<Rail Transport Coordination, connectedTo, Customs Declaration>
+<Return Logistics, partOf, Container Loading>
+<Return Logistics, yes, Barcode Scanning>
+<Route Optimization Software, connectedTo, Customs Declaration>
+<Route Optimization Software, connectedTo, Damage Reporting>
+<Route Optimization Software, connectedTo, Invoice Matching>
+<Yard Management, connectedTo, Damage Reporting>
+<Yard Management, connectedTo, Delay Notification>
+<start, connectedTo, Global Trade Compliance>
diff --git a/train/mermaid/hard/mermaid_723.txt b/train/mermaid/hard/mermaid_723.txt
new file mode 100644
index 0000000000000000000000000000000000000000..29c78b3a2d9583f1d76b581526094b9fd2b00add
--- /dev/null
+++ b/train/mermaid/hard/mermaid_723.txt
@@ -0,0 +1,40 @@
+<Accessibility for Users, connectedTo, User Onboarding>
+<Accessibility for Users, partOf, Bike_sharing Services>
+<Autonomous Shared Vehicles, connectedTo, Insurance Models>
+<Autonomous Shared Vehicles, partOf, Micro_mobility Management>
+<Car_sharing Services, connectedTo, User Onboarding>
+<Customer Support, connectedTo, Autonomous Shared Vehicles>
+<Customer Support, connectedTo, Car_sharing Services>
+<Customer Support, connectedTo, Fleet Management>
+<Data Analytics for Usage Patterns, books, Driver Management>
+<Data Analytics for Usage Patterns, connectedTo, First_Mile or Last_Mile Solutions>
+<Data Analytics for Usage Patterns, connectedTo, User Rating and Feedback Systems>
+<Driver Management, connectedTo, Customer Support>
+<Driver Management, connectedTo, Dynamic Pricing>
+<Driver Management, connectedTo, Fraud Prevention>
+<Driver Management, connectedTo, User Rating and Feedback Systems>
+<Driver Management, connectedTo, Vehicle Booking>
+<Dynamic Pricing, markets, Scooter_sharing Services>
+<First_Mile or Last_Mile Solutions, connectedTo, User Registration>
+<Fleet Management, connectedTo, Car_sharing Services>
+<Fleet Management, connectedTo, Smart City Integration>
+<Fleet Management, integrates, User Rating and Feedback Systems>
+<Fraud Prevention, connectedTo, Dynamic Pricing>
+<Insurance Models, connectedTo, Public_Private Partnerships>
+<Insurance Models, partOf, Micro_mobility Management>
+<Parking Integration, connectedTo, Platform Development>
+<Platform Development, connectedTo, Public Transit Integration>
+<Public Transit Integration, connectedTo, Vehicle Booking>
+<Public_Private Partnerships, connectedTo, First_Mile or Last_Mile Solutions>
+<Scooter_sharing Services, accesses, Parking Integration>
+<Smart City Integration, connectedTo, Accessibility for Users>
+<Smart City Integration, partOf, Bike_sharing Services>
+<Supply_Demand Balancing, connectedTo, Car_sharing Services>
+<User Onboarding, connectedTo, Fraud Prevention>
+<User Rating and Feedback Systems, connectedTo, Car_sharing Services>
+<User Rating and Feedback Systems, connectedTo, Public_Private Partnerships>
+<User Rating and Feedback Systems, partners, First_Mile or Last_Mile Solutions>
+<User Registration, connectedTo, Dynamic Pricing>
+<User Registration, connectedTo, Parking Integration>
+<User Registration, licenses, Supply_Demand Balancing>
+<start, connectedTo, Data Analytics for Usage Patterns>
diff --git a/train/mermaid/hard/mermaid_726.mmd b/train/mermaid/hard/mermaid_726.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1847c41dc6675e79fa2c77f6dcc9443be9454434
--- /dev/null
+++ b/train/mermaid/hard/mermaid_726.mmd
@@ -0,0 +1,136 @@
+graph LR
+    N0([Data Analytics for Usage Patterns])
+    N1([Passenger Safety Protocols])
+    N2{Carbon Emission Tracking}
+    N3[(First_Mile or Last_Mile Solutions)]
+    N4{Vehicle Location Tracking}
+    N5[(Bike_sharing Services)]
+    N6([Customer Support])
+    N7[Regulatory Compliance]
+    N8[(Supply_Demand Balancing)]
+    N9[(User Rating and Feedback Systems)]
+    N10[Driver Management]
+    N11(Ride_sharing Services)
+    N12[Maintenance Scheduling]
+    N13[(Public Transit Integration)]
+    N14(Vehicle Rebalancing)
+    N15[/Ticketing and Fare Collection/]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Vehicle Booking
+        nest0_0[Accessibility for Users]
+        nest0_1[User Onboarding]
+    end
+    subgraph Demand Prediction
+        nest1_0[/Insurance Models/]
+        nest1_1[(Smart City Integration)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> |locates| N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> |tracks| N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    N4 --> nest0_0
+    nest0_1 --> N13
+    nest1_0 --> nest1_1
+    N4 -.-> nest1_0
+    nest1_1 -.-> |books| N1
+    N4 --> S0
+    S0 -.-> N15
+    S0 -.-> N14
+    S0 --> N6
+    N9 -.-> S1
+    S1 -.-> N11
+    S1 -.-> N13
+    N8 --> M0
+    N5 --> M0
+    M0 --> N12
+    N3 -.-> M1
+    N4 -.-> M1
+    N0 --> M1
+    M1 -.-> N7
+    N0 --> M2
+    N2 --> M2
+    M2 --> N6
+    style N0 fill:#FFF9D4,stroke:#FFE69C
+    style N1 fill:#FFF3E0,stroke:#FFB74D
+    style N2 fill:#FFF3E0,stroke:#FFB74D
+    style N3 fill:#FFF0CC,stroke:#FFCC80
+    style N4 fill:#FFF9D4,stroke:#FFE69C
+    style N5 fill:#FFF0CC,stroke:#FFCC80
+    style N6 fill:#FFF3E0,stroke:#FFB74D
+    style N7 fill:#FFF9D4,stroke:#FFE69C
+    style N8 fill:#FFF3E0,stroke:#FFB74D
+    style N9 fill:#FFF3E0,stroke:#FFB74D
+    style N10 fill:#FFF3E0,stroke:#FFB74D
+    style N11 fill:#FFF3E0,stroke:#FFB74D
+    style N12 fill:#FFF3E0,stroke:#FFB74D
+    style N13 fill:#FFF3E0,stroke:#FFB74D
+    style N14 fill:#FFF3E0,stroke:#FFB74D
+    style N15 fill:#FFF0CC,stroke:#FFCC80
+    style N16 fill:#FFF0CC,stroke:#FFCC80
+    style S0 fill:#FFF9D4,stroke:#FFE69C
+    style S1 fill:#FFF9D4,stroke:#FFE69C
+    style M0 fill:#FFF9D4,stroke:#FFE69C
+    style M1 fill:#FFF3E0,stroke:#FFB74D
+    style M2 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_0 fill:#FFF9D4,stroke:#FFE69C
+    style nest0_1 fill:#FFF3E0,stroke:#FFB74D
+    style nest1_0 fill:#FFF9D4,stroke:#FFE69C
+    style nest1_1 fill:#FFF0CC,stroke:#FFCC80
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#FFE69C,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFB74D,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFB74D,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_726.txt b/train/mermaid/hard/mermaid_726.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b9b66bfd4ee03ca3ae4febd5a4726e82e60312d6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_726.txt
@@ -0,0 +1,38 @@
+<Accessibility for Users, connectedTo, User Onboarding>
+<Accessibility for Users, partOf, Vehicle Booking>
+<Bike_sharing Services, connectedTo, Customer Support>
+<Bike_sharing Services, connectedTo, Maintenance Scheduling>
+<Carbon Emission Tracking, connectedTo, Customer Support>
+<Carbon Emission Tracking, connectedTo, First_Mile or Last_Mile Solutions>
+<Customer Support, connectedTo, Regulatory Compliance>
+<Data Analytics for Usage Patterns, connectedTo, Customer Support>
+<Data Analytics for Usage Patterns, connectedTo, Passenger Safety Protocols>
+<Data Analytics for Usage Patterns, connectedTo, Regulatory Compliance>
+<Driver Management, connectedTo, Ride_sharing Services>
+<First_Mile or Last_Mile Solutions, connectedTo, Regulatory Compliance>
+<First_Mile or Last_Mile Solutions, connectedTo, Vehicle Location Tracking>
+<Insurance Models, connectedTo, Smart City Integration>
+<Insurance Models, partOf, Demand Prediction>
+<Maintenance Scheduling, tracks, Public Transit Integration>
+<Passenger Safety Protocols, connectedTo, Carbon Emission Tracking>
+<Public Transit Integration, connectedTo, Vehicle Rebalancing>
+<Regulatory Compliance, connectedTo, Supply_Demand Balancing>
+<Ride_sharing Services, connectedTo, Maintenance Scheduling>
+<Smart City Integration, books, Passenger Safety Protocols>
+<Smart City Integration, partOf, Demand Prediction>
+<Supply_Demand Balancing, connectedTo, Maintenance Scheduling>
+<Supply_Demand Balancing, connectedTo, User Rating and Feedback Systems>
+<Ticketing and Fare Collection, connectedTo, end>
+<User Onboarding, connectedTo, Public Transit Integration>
+<User Onboarding, partOf, Vehicle Booking>
+<User Rating and Feedback Systems, connectedTo, Driver Management>
+<User Rating and Feedback Systems, connectedTo, Public Transit Integration>
+<User Rating and Feedback Systems, connectedTo, Ride_sharing Services>
+<Vehicle Location Tracking, connectedTo, Accessibility for Users>
+<Vehicle Location Tracking, connectedTo, Customer Support>
+<Vehicle Location Tracking, connectedTo, Insurance Models>
+<Vehicle Location Tracking, connectedTo, Regulatory Compliance>
+<Vehicle Location Tracking, connectedTo, Ticketing and Fare Collection>
+<Vehicle Location Tracking, connectedTo, Vehicle Rebalancing>
+<Vehicle Location Tracking, locates, Bike_sharing Services>
+<Vehicle Rebalancing, connectedTo, Ticketing and Fare Collection>
diff --git a/train/mermaid/hard/mermaid_728.txt b/train/mermaid/hard/mermaid_728.txt
new file mode 100644
index 0000000000000000000000000000000000000000..66827d50ad4f66e8ab8113b050aac6e5d4fc61b0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_728.txt
@@ -0,0 +1,29 @@
+<Autonomous Shared Vehicles, connectedTo, Ride_sharing Services>
+<Autonomous Shared Vehicles, partOf, Data Analytics for Usage Patterns>
+<Car_sharing Services, connectedTo, Customer Support>
+<Carbon Emission Tracking, connectedTo, Insurance Models>
+<Customer Support, connectedTo, Maintenance Scheduling>
+<Demand Prediction, connectedTo, Geofencing for Operations>
+<Demand Prediction, connectedTo, Supply_Demand Balancing>
+<Fraud Prevention, connectedTo, Autonomous Shared Vehicles>
+<Fraud Prevention, partOf, Data Analytics for Usage Patterns>
+<Geofencing for Operations, pays, Vehicle Booking>
+<Insurance Models, connectedTo, Scooter_sharing Services>
+<Insurance Models, connectedTo, Vehicle Booking>
+<Maintenance Scheduling, connectedTo, Carbon Emission Tracking>
+<Maintenance Scheduling, connectedTo, Fraud Prevention>
+<Policy Advocacy for Shared Mobility, connectedTo, Demand Prediction>
+<Policy Advocacy for Shared Mobility, partOf, Parking Integration>
+<Public Transit Integration, connectedTo, Geofencing for Operations>
+<Public Transit Integration, connectedTo, Vehicle Booking>
+<Public Transit Integration, monitors, Demand Prediction>
+<Public Transit Integration, responds, Geofencing for Operations>
+<Ride_sharing Services, connectedTo, User Rating and Feedback Systems>
+<Ride_sharing Services, partOf, Data Analytics for Usage Patterns>
+<Scooter_sharing Services, connectedTo, Vehicle Rebalancing>
+<Supply_Demand Balancing, connectedTo, Policy Advocacy for Shared Mobility>
+<Supply_Demand Balancing, partOf, Parking Integration>
+<User Rating and Feedback Systems, connectedTo, Vehicle Booking>
+<User Rating and Feedback Systems, partOf, Data Analytics for Usage Patterns>
+<Vehicle Rebalancing, connectedTo, Public Transit Integration>
+<Vehicle Rebalancing, connectedTo, Vehicle Booking>
diff --git a/train/mermaid/hard/mermaid_730.mmd b/train/mermaid/hard/mermaid_730.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..bd954118c06eac46733cbc4939c2eda73dcea04d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_730.mmd
@@ -0,0 +1,108 @@
+graph RL
+    N0([Demand Forecasting])
+    N1(Reservations System)
+    N2{Enforcement and Fines Management}
+    N3(Barrier Gate Control)
+    N4[Emergency Vehicle Access Management]
+    N5[/Smart Parking Meters/]
+    N6[Revenue Management]
+    N7{Permit Management}
+    N8[/Intelligent Traffic Management Interaction/]
+    N9(Data Analytics for Parking Usage)
+    N10[(Valet Parking Automation)]
+    N11(User Experience Design for Apps)
+    N12([end])
+    S0(( ))
+    S1(( ))
+    M2(( ))
+    subgraph Cloud_based Parking Platforms
+        nest0_0(Mobile Parking Apps)
+        nest0_1{Ticketing System Integration}
+        nest0_2(Real_Time Information Display)
+    end
+    subgraph On_Street Parking Management
+        nest1_0[Space Detection]
+        nest1_1([License Plate Recognition])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N2 --> nest0_0
+    nest0_2 --> N5
+    nest1_0 --> nest1_1
+    N2 --> nest1_0
+    nest1_1 -.-> N6
+    N5 -.-> S0
+    S0 -.-> N9
+    S0 -.-> |certifies| N7
+    N5 -.-> S1
+    S1 --> N10
+    S1 --> |tracks| N8
+    S1 -.-> N7
+    N4 --> M2
+    N1 -.-> M2
+    N0 --> M2
+    M2 --> N8
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#E4E0DF,stroke:#BDAFA8
+    style N2 fill:#FCE4EC,stroke:#E91E63
+    style N3 fill:#E4E0DF,stroke:#BDAFA8
+    style N4 fill:#FCE4EC,stroke:#E91E63
+    style N5 fill:#CADEDE,stroke:#94C0C0
+    style N6 fill:#E4E0DF,stroke:#BDAFA8
+    style N7 fill:#E4E0DF,stroke:#BDAFA8
+    style N8 fill:#E4E0DF,stroke:#BDAFA8
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#E4E0DF,stroke:#BDAFA8
+    style N11 fill:#CADEDE,stroke:#94C0C0
+    style N12 fill:#E4E0DF,stroke:#BDAFA8
+    style S0 fill:#CADEDE,stroke:#94C0C0
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style M2 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#CADEDE,stroke:#94C0C0
+    style nest0_2 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#FCE4EC,stroke:#E91E63
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_731.mmd b/train/mermaid/hard/mermaid_731.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6db2673f4d3470d2351264070b25e8e64ba0399c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_731.mmd
@@ -0,0 +1,154 @@
+graph BT
+    N0([start])
+    N1[[Navigation to Open Space]]
+    N2[[Permit Management]]
+    N3[Mobile Parking Apps]
+    N4(Electric Vehicle Charging Integration)
+    N5[[Space Detection]]
+    N6[Integration with Navigation Apps]
+    N7[Fleet Parking Solutions]
+    N8([Smart City Integration for Parking])
+    N9(Billing and Reconciliation)
+    N10[User Experience Design for Apps]
+    N11([Event Parking Management])
+    N12[(Customer Support)]
+    N13(Vacancy Monitoring)
+    N14[(Off_Street Parking Management)]
+    N15[[Edge Computing for Parking Data]]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Maintenance of Systems
+        nest0_0(Access Control Systems)
+        nest0_1([Valet Parking Automation])
+        nest0_2(Environmental Impact Monitoring)
+    end
+    subgraph On_Street Parking Management
+        nest1_0[[Reservations System]]
+        nest1_1(Parking Guidance Systems)
+        nest1_2([Ticketing System Integration])
+        nest1_3[(License Plate Recognition)]
+    end
+    N0 --> |installs| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> |monitors| N6
+    N6 --> |controls| N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> |upgrades| N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N6 -.-> nest0_0
+    nest0_2 -.-> |optimizes| N8
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N7 -.-> nest1_0
+    nest1_3 --> N11
+    N8 -.-> S0
+    S0 -.-> |reserves| N11
+    S0 -.-> N15
+    N1 --> S1
+    S1 --> N10
+    S1 -.-> N12
+    N8 -.-> S2
+    S2 --> N12
+    S2 --> N15
+    S2 --> N11
+    S2 --> |repairs| N16
+    N2 --> |tracks| M0
+    N8 --> M0
+    N3 --> M0
+    N7 --> |displays| M0
+    M0 --> N11
+    N1 -.-> M2
+    N3 -.-> M2
+    N0 --> M2
+    M2 -.-> N5
+    style N0 fill:#C8E6C9,stroke:#4CAF50
+    style N1 fill:#B3E5FC,stroke:#03A9F4
+    style N2 fill:#B3E5FC,stroke:#03A9F4
+    style N3 fill:#F3E5F5,stroke:#AB47BC
+    style N4 fill:#C8E6C9,stroke:#4CAF50
+    style N5 fill:#C8E6C9,stroke:#4CAF50
+    style N6 fill:#C8E6C9,stroke:#4CAF50
+    style N7 fill:#B3E5FC,stroke:#03A9F4
+    style N8 fill:#F3E5F5,stroke:#AB47BC
+    style N9 fill:#F3E5F5,stroke:#AB47BC
+    style N10 fill:#F3E5F5,stroke:#AB47BC
+    style N11 fill:#B3E5FC,stroke:#03A9F4
+    style N12 fill:#B3E5FC,stroke:#03A9F4
+    style N13 fill:#F3E5F5,stroke:#AB47BC
+    style N14 fill:#C8E6C9,stroke:#4CAF50
+    style N15 fill:#F3E5F5,stroke:#AB47BC
+    style N16 fill:#C8E6C9,stroke:#4CAF50
+    style S0 fill:#C8E6C9,stroke:#4CAF50
+    style S1 fill:#F3E5F5,stroke:#AB47BC
+    style S2 fill:#F3E5F5,stroke:#AB47BC
+    style M0 fill:#B3E5FC,stroke:#03A9F4
+    style M2 fill:#F3E5F5,stroke:#AB47BC
+    style nest0_0 fill:#F3E5F5,stroke:#AB47BC
+    style nest0_1 fill:#C8E6C9,stroke:#4CAF50
+    style nest0_2 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_2 fill:#F3E5F5,stroke:#AB47BC
+    style nest1_3 fill:#F3E5F5,stroke:#AB47BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#AB47BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_731.txt b/train/mermaid/hard/mermaid_731.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f05b9edcde0eb3f0110d0a6c1f7c494765cbd86f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_731.txt
@@ -0,0 +1,45 @@
+<Access Control Systems, connectedTo, Valet Parking Automation>
+<Access Control Systems, partOf, Maintenance of Systems>
+<Billing and Reconciliation, connectedTo, User Experience Design for Apps>
+<Customer Support, upgrades, Vacancy Monitoring>
+<Edge Computing for Parking Data, connectedTo, end>
+<Electric Vehicle Charging Integration, connectedTo, Space Detection>
+<Environmental Impact Monitoring, optimizes, Smart City Integration for Parking>
+<Environmental Impact Monitoring, partOf, Maintenance of Systems>
+<Event Parking Management, connectedTo, Customer Support>
+<Fleet Parking Solutions, connectedTo, Reservations System>
+<Fleet Parking Solutions, connectedTo, Smart City Integration for Parking>
+<Fleet Parking Solutions, displays, Event Parking Management>
+<Integration with Navigation Apps, connectedTo, Access Control Systems>
+<Integration with Navigation Apps, controls, Fleet Parking Solutions>
+<License Plate Recognition, connectedTo, Event Parking Management>
+<License Plate Recognition, partOf, On_Street Parking Management>
+<Mobile Parking Apps, connectedTo, Electric Vehicle Charging Integration>
+<Mobile Parking Apps, connectedTo, Event Parking Management>
+<Mobile Parking Apps, connectedTo, Space Detection>
+<Navigation to Open Space, connectedTo, Customer Support>
+<Navigation to Open Space, connectedTo, Permit Management>
+<Navigation to Open Space, connectedTo, Space Detection>
+<Navigation to Open Space, connectedTo, User Experience Design for Apps>
+<Off_Street Parking Management, connectedTo, Edge Computing for Parking Data>
+<Parking Guidance Systems, connectedTo, Ticketing System Integration>
+<Parking Guidance Systems, partOf, On_Street Parking Management>
+<Permit Management, connectedTo, Mobile Parking Apps>
+<Permit Management, tracks, Event Parking Management>
+<Reservations System, connectedTo, Parking Guidance Systems>
+<Reservations System, partOf, On_Street Parking Management>
+<Smart City Integration for Parking, connectedTo, Billing and Reconciliation>
+<Smart City Integration for Parking, connectedTo, Customer Support>
+<Smart City Integration for Parking, connectedTo, Edge Computing for Parking Data>
+<Smart City Integration for Parking, connectedTo, Event Parking Management>
+<Smart City Integration for Parking, repairs, end>
+<Smart City Integration for Parking, reserves, Event Parking Management>
+<Space Detection, monitors, Integration with Navigation Apps>
+<Ticketing System Integration, connectedTo, License Plate Recognition>
+<Ticketing System Integration, partOf, On_Street Parking Management>
+<User Experience Design for Apps, connectedTo, Event Parking Management>
+<Vacancy Monitoring, connectedTo, Off_Street Parking Management>
+<Valet Parking Automation, connectedTo, Environmental Impact Monitoring>
+<Valet Parking Automation, partOf, Maintenance of Systems>
+<start, connectedTo, Space Detection>
+<start, installs, Navigation to Open Space>
diff --git a/train/mermaid/hard/mermaid_732.txt b/train/mermaid/hard/mermaid_732.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3d7c5ef7ee33e9fc1380bbb80eeba885d1b126ac
--- /dev/null
+++ b/train/mermaid/hard/mermaid_732.txt
@@ -0,0 +1,45 @@
+<Automated Parking Garages, connectedTo, Emergency Vehicle Access Management>
+<Automated Parking Garages, connectedTo, Event Parking Management>
+<Automated Parking Garages, connectedTo, On_Street Parking Management>
+<Automated Parking Garages, connectedTo, User Experience Design for Apps>
+<Automated Parking Garages, no, Billing and Reconciliation>
+<Billing and Reconciliation, connectedTo, Emergency Vehicle Access Management>
+<Dynamic Pricing, connectedTo, On_Street Parking Management>
+<Dynamic Pricing, connectedTo, Reservations System>
+<Emergency Vehicle Access Management, connectedTo, Event Parking Management>
+<Emergency Vehicle Access Management, connectedTo, On_Street Parking Management>
+<Environmental Impact Monitoring, connectedTo, Fleet Parking Solutions>
+<Environmental Impact Monitoring, partOf, Data Analytics for Parking Usage>
+<Fleet Parking Solutions, connectedTo, Space Detection>
+<Fleet Parking Solutions, partOf, Data Analytics for Parking Usage>
+<Integration with Navigation Apps, connectedTo, Event Parking Management>
+<IoT Sensors for Parking, connectedTo, License Plate Recognition>
+<IoT Sensors for Parking, partOf, Electric Vehicle Charging Integration>
+<License Plate Recognition, connectedTo, Reservations System>
+<License Plate Recognition, partOf, Electric Vehicle Charging Integration>
+<Off_Street Parking Management, connectedTo, On_Street Parking Management>
+<Off_Street Parking Management, connectedTo, Real_Time Information Display>
+<Off_Street Parking Management, connectedTo, Vacancy Monitoring>
+<Off_Street Parking Management, yes, Environmental Impact Monitoring>
+<On_Street Parking Management, connectedTo, Event Parking Management>
+<On_Street Parking Management, connectedTo, Ticketing System Integration>
+<Real_Time Information Display, connectedTo, Dynamic Pricing>
+<Real_Time Information Display, connectedTo, Vacancy Monitoring>
+<Reservations System, connectedTo, Vacancy Monitoring>
+<Smart City Integration for Parking, connectedTo, IoT Sensors for Parking>
+<Smart City Integration for Parking, partOf, Electric Vehicle Charging Integration>
+<Space Detection, connectedTo, User Experience Design for Apps>
+<Space Detection, partOf, Data Analytics for Parking Usage>
+<Ticketing System Integration, connectedTo, Integration with Navigation Apps>
+<Ticketing System Integration, connectedTo, Valet Parking Automation>
+<User Experience Design for Apps, connectedTo, Billing and Reconciliation>
+<User Experience Design for Apps, connectedTo, On_Street Parking Management>
+<Vacancy Monitoring, connectedTo, Automated Parking Garages>
+<Vacancy Monitoring, connectedTo, Billing and Reconciliation>
+<Vacancy Monitoring, connectedTo, Event Parking Management>
+<Vacancy Monitoring, connectedTo, Integration with Navigation Apps>
+<Vacancy Monitoring, connectedTo, On_Street Parking Management>
+<Valet Parking Automation, connectedTo, Smart City Integration for Parking>
+<Valet Parking Automation, partOf, Electric Vehicle Charging Integration>
+<start, connectedTo, Off_Street Parking Management>
+<start, connectedTo, Vacancy Monitoring>
diff --git a/train/mermaid/hard/mermaid_734.mmd b/train/mermaid/hard/mermaid_734.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b03ed1d570a393215d6d320e7727bdfa73f76ce7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_734.mmd
@@ -0,0 +1,101 @@
+graph TD
+    N0([start])
+    N1[Ticketing System Integration]
+    N2([Billing and Reconciliation])
+    N3[/Space Detection/]
+    N4([Cloud_based Parking Platforms])
+    N5[Security Surveillance]
+    N6[Access Control Systems]
+    N7(Automated Parking Garages)
+    N8[Real_Time Information Display]
+    N9([Reservations System])
+    N10[Off_Street Parking Management]
+    N11[[Permit Management]]
+    N12[/Smart Parking Meters/]
+    N13(Integration with Navigation Apps)
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    subgraph Intelligent Traffic Management Interaction
+        nest0_0[(Valet Parking Automation)]
+        nest0_1[(Violation Detection)]
+        nest0_2[/Fleet Parking Solutions/]
+        nest0_3[(User Experience Design for Apps)]
+    end
+    subgraph Event Parking Management
+        nest1_0[Vacancy Monitoring]
+        nest1_1{Navigation to Open Space}
+    end
+    N0 --> |yes| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 --> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> |yes| nest0_3
+    N12 --> nest0_0
+    nest0_3 --> N5
+    nest1_0 --> nest1_1
+    N5 -.-> nest1_0
+    nest1_1 --> |no| N13
+    N9 --> S0
+    S0 -.-> |yes| N13
+    S0 --> N14
+    S0 -.-> N12
+    S0 --> N11
+    N3 --> S1
+    S1 --> |yes| N9
+    S1 -.-> N5
+    N6 --> S2
+    S2 -.-> N11
+    S2 -.-> N12
+    S2 -.-> N14
+    style S0 fill:#F3E5F5,stroke:#AB47BC
+    style S1 fill:#F3E5F5,stroke:#AB47BC
+    style S2 fill:#F8BBD0,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
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+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6FE1D5,stroke-width:2px,fill:none;
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+    linkStyle 26 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AB47BC,stroke-width:2px,fill:none;
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+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#AB47BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_738.mmd b/train/mermaid/hard/mermaid_738.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..35d558b1a526ef4595c61456da33c3f61f91961f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_738.mmd
@@ -0,0 +1,134 @@
+graph BT
+    N0([Theme Park Ticketing])
+    N1[/Airline Ticketing/]
+    N2([Access Control])
+    N3[(Waiting List Management)]
+    N4[(Venue Capacity Management)]
+    N5{Resale Market Integration}
+    N6(Ticket Sales)
+    N7{Museum Ticketing}
+    N8[/Box Office Management/]
+    N9(Pricing Configuration)
+    N10[Audience Segmentation]
+    N11[[Event Creation]]
+    N12(Public Transport Ticketing)
+    N13[[Concert Ticketing]]
+    N14(Group Booking Management)
+    N15[/Theater Ticketing/]
+    N16[(Refund Management)]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Queue Management
+        nest0_0{Scalper Prevention}
+        nest0_1[Event Promotion Tools]
+        nest0_2[Seat Mapping]
+    end
+    subgraph Fraud Prevention
+        nest1_0(Biometric Ticketing)
+        nest1_1(Payment Processing)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> |maintains| N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N12 --> nest0_0
+    nest0_2 -.-> N4
+    nest1_0 --> nest1_1
+    N2 --> nest1_0
+    nest1_1 -.-> N3
+    N9 --> S0
+    S0 --> N14
+    S0 --> N16
+    N3 -.-> S1
+    S1 --> N12
+    S1 -.-> |payments| N7
+    N5 -.-> S2
+    S2 --> N16
+    S2 -.-> N13
+    N4 -.-> M1
+    N8 -.-> |troubleshoots| M1
+    N12 --> M1
+    M1 -.-> N16
+    style N0 fill:#F6F6F6,stroke:#CFCFCF
+    style N1 fill:#F6F6F6,stroke:#CFCFCF
+    style N2 fill:#EDF5F3,stroke:#A1D7CD
+    style N3 fill:#F6F6F6,stroke:#CFCFCF
+    style N4 fill:#E0F2F1,stroke:#26A69A
+    style N5 fill:#EDF5F3,stroke:#A1D7CD
+    style N6 fill:#E0F2F1,stroke:#26A69A
+    style N7 fill:#F6F6F6,stroke:#CFCFCF
+    style N8 fill:#E0F2F1,stroke:#26A69A
+    style N9 fill:#F6F6F6,stroke:#CFCFCF
+    style N10 fill:#F6F6F6,stroke:#CFCFCF
+    style N11 fill:#EDF5F3,stroke:#A1D7CD
+    style N12 fill:#EDF5F3,stroke:#A1D7CD
+    style N13 fill:#EDF5F3,stroke:#A1D7CD
+    style N14 fill:#EDF5F3,stroke:#A1D7CD
+    style N15 fill:#F6F6F6,stroke:#CFCFCF
+    style N16 fill:#F6F6F6,stroke:#CFCFCF
+    style N17 fill:#F6F6F6,stroke:#CFCFCF
+    style S0 fill:#EDF5F3,stroke:#A1D7CD
+    style S1 fill:#EDF5F3,stroke:#A1D7CD
+    style S2 fill:#F6F6F6,stroke:#CFCFCF
+    style M1 fill:#E0F2F1,stroke:#26A69A
+    style nest0_0 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_1 fill:#EDF5F3,stroke:#A1D7CD
+    style nest0_2 fill:#E0F2F1,stroke:#26A69A
+    style nest1_0 fill:#E0F2F1,stroke:#26A69A
+    style nest1_1 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#26A69A,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#CFCFCF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_738.txt b/train/mermaid/hard/mermaid_738.txt
new file mode 100644
index 0000000000000000000000000000000000000000..164ec2e00f5907bf7961851dc741c47e8eaa0775
--- /dev/null
+++ b/train/mermaid/hard/mermaid_738.txt
@@ -0,0 +1,38 @@
+<Access Control, connectedTo, Biometric Ticketing>
+<Access Control, maintains, Waiting List Management>
+<Airline Ticketing, connectedTo, Access Control>
+<Audience Segmentation, connectedTo, Event Creation>
+<Biometric Ticketing, connectedTo, Payment Processing>
+<Biometric Ticketing, partOf, Fraud Prevention>
+<Box Office Management, connectedTo, Pricing Configuration>
+<Box Office Management, troubleshoots, Refund Management>
+<Concert Ticketing, connectedTo, Group Booking Management>
+<Event Creation, connectedTo, Public Transport Ticketing>
+<Event Promotion Tools, connectedTo, Seat Mapping>
+<Event Promotion Tools, partOf, Queue Management>
+<Group Booking Management, connectedTo, Theater Ticketing>
+<Museum Ticketing, connectedTo, Box Office Management>
+<Payment Processing, connectedTo, Waiting List Management>
+<Payment Processing, partOf, Fraud Prevention>
+<Pricing Configuration, connectedTo, Audience Segmentation>
+<Pricing Configuration, connectedTo, Group Booking Management>
+<Pricing Configuration, connectedTo, Refund Management>
+<Public Transport Ticketing, connectedTo, Concert Ticketing>
+<Public Transport Ticketing, connectedTo, Refund Management>
+<Public Transport Ticketing, connectedTo, Scalper Prevention>
+<Refund Management, connectedTo, end>
+<Resale Market Integration, connectedTo, Concert Ticketing>
+<Resale Market Integration, connectedTo, Refund Management>
+<Resale Market Integration, connectedTo, Ticket Sales>
+<Scalper Prevention, connectedTo, Event Promotion Tools>
+<Scalper Prevention, partOf, Queue Management>
+<Seat Mapping, connectedTo, Venue Capacity Management>
+<Seat Mapping, partOf, Queue Management>
+<Theater Ticketing, connectedTo, Refund Management>
+<Theme Park Ticketing, connectedTo, Airline Ticketing>
+<Ticket Sales, connectedTo, Museum Ticketing>
+<Venue Capacity Management, connectedTo, Refund Management>
+<Venue Capacity Management, connectedTo, Resale Market Integration>
+<Waiting List Management, connectedTo, Public Transport Ticketing>
+<Waiting List Management, connectedTo, Venue Capacity Management>
+<Waiting List Management, payments, Museum Ticketing>
diff --git a/train/mermaid/hard/mermaid_742.mmd b/train/mermaid/hard/mermaid_742.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b65e410663d0da531a7480fe54cc314be4b1aa55
--- /dev/null
+++ b/train/mermaid/hard/mermaid_742.mmd
@@ -0,0 +1,110 @@
+graph LR
+    N0([start])
+    N1([Biometric Ticketing])
+    N2(Analytics on Sales Data)
+    N3[[Fraud Prevention]]
+    N4(Personalized Ticket Offers)
+    N5([Fan Loyalty Programs])
+    N6([Payment Processing])
+    N7[Waiting List Management]
+    N8[(Ticket Sales)]
+    N9[(Public Transport Ticketing)]
+    N10[Audience Segmentation]
+    N11{Ticket Delivery}
+    N12[[Event Promotion Tools]]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Scalper Prevention
+        nest0_0(Blockchain Ticketing for Authenticity)
+        nest0_1([Customer Relationship Management Integration])
+        nest0_2([Festival Ticketing])
+    end
+    subgraph Airline Ticketing
+        nest1_0{Agent Network Management}
+        nest1_1[[Access Control]]
+        nest1_2(Museum Ticketing)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> |discounts| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    nest0_1 --> |integrates| nest0_2
+    N11 -.-> nest0_0
+    nest0_2 --> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 -.-> N4
+    N5 --> S0
+    S0 --> N8
+    S0 -.-> N12
+    S0 --> N10
+    N0 -.-> S1
+    S1 -.-> N12
+    S1 -.-> N7
+    N2 -.-> M0
+    N1 --> M0
+    M0 -.-> N7
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#E8F0FF,stroke:#A2D0FF
+    style N2 fill:#E8F5E9,stroke:#66BB6A
+    style N3 fill:#E8F5E9,stroke:#66BB6A
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#E8F5E9,stroke:#66BB6A
+    style N6 fill:#E8F0FF,stroke:#A2D0FF
+    style N7 fill:#E8F0FF,stroke:#A2D0FF
+    style N8 fill:#E8F0FF,stroke:#A2D0FF
+    style N9 fill:#ECF0FD,stroke:#B8C0F5
+    style N10 fill:#E8F0FF,stroke:#A2D0FF
+    style N11 fill:#E8F0FF,stroke:#A2D0FF
+    style N12 fill:#ECF0FD,stroke:#B8C0F5
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#E8F5E9,stroke:#66BB6A
+    style M0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_0 fill:#ECF0FD,stroke:#B8C0F5
+    style nest0_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_2 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_0 fill:#E8F5E9,stroke:#66BB6A
+    style nest1_1 fill:#E8F0FF,stroke:#A2D0FF
+    style nest1_2 fill:#E8F0FF,stroke:#A2D0FF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B8C0F5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_743.txt b/train/mermaid/hard/mermaid_743.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b08923038dad58ae86919d82b154eaa455a1dbbb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_743.txt
@@ -0,0 +1,33 @@
+<Analytics on Sales Data, connectedTo, Group Booking Management>
+<Analytics on Sales Data, connectedTo, Ticket Sales>
+<Analytics on Sales Data, connectedTo, Venue Capacity Management>
+<Biometric Ticketing, connectedTo, Public Transport Ticketing>
+<Concert Ticketing, partOf, Airline Ticketing>
+<Concert Ticketing, scans, Order Confirmation>
+<Customer Relationship Management Integration, connectedTo, Refund Management>
+<Customer Relationship Management Integration, partOf, Audience Segmentation>
+<Dynamic Pricing, audits, Museum Ticketing>
+<Dynamic Pricing, partOf, Audience Segmentation>
+<Fraud Prevention, connectedTo, Biometric Ticketing>
+<Group Booking Management, connectedTo, Biometric Ticketing>
+<Group Booking Management, connectedTo, Fraud Prevention>
+<Group Booking Management, connectedTo, Public Transport Ticketing>
+<Museum Ticketing, connectedTo, Biometric Ticketing>
+<Museum Ticketing, partOf, Audience Segmentation>
+<Order Confirmation, connectedTo, Ticket Sales>
+<Order Confirmation, partOf, Airline Ticketing>
+<Refund Management, connectedTo, Dynamic Pricing>
+<Refund Management, partOf, Audience Segmentation>
+<Seat Mapping, connectedTo, Concert Ticketing>
+<Seat Mapping, partOf, Airline Ticketing>
+<Theater Ticketing, connectedTo, Ticket Delivery>
+<Theater Ticketing, troubleshoots, Biometric Ticketing>
+<Ticket Delivery, connectedTo, Venue Capacity Management>
+<Ticket Sales, connectedTo, Customer Relationship Management Integration>
+<Ticket Sales, connectedTo, Seat Mapping>
+<Ticket Sales, connectedTo, Theater Ticketing>
+<Ticket Sales, connectedTo, Ticket Delivery>
+<Ticket Sales, discounts, Biometric Ticketing>
+<Venue Capacity Management, connectedTo, Group Booking Management>
+<start, connectedTo, Analytics on Sales Data>
+<start, connectedTo, Ticket Delivery>
diff --git a/train/mermaid/hard/mermaid_745.txt b/train/mermaid/hard/mermaid_745.txt
new file mode 100644
index 0000000000000000000000000000000000000000..54d5772ad20c719ba4ddf02b8b20a1f91ff5c0af
--- /dev/null
+++ b/train/mermaid/hard/mermaid_745.txt
@@ -0,0 +1,29 @@
+<Auditability, connectedTo, Voter Education Programs>
+<Biometric Voter ID, connectedTo, Legal Framework Compliance>
+<Biometric Voter ID, partOf, Optical Scan Systems>
+<Blockchain for Voting, connectedTo, Public Trust Building>
+<Blockchain for Voting, partOf, Optical Scan Systems>
+<Cryptographic Security, connectedTo, Auditability>
+<Cryptographic Security, connectedTo, System Certification>
+<Cryptographic Security, connectedTo, Voter Education Programs>
+<Legal Framework Compliance, connectedTo, Risk Management for Elections>
+<Legal Framework Compliance, connectedTo, System Certification>
+<Legal Framework Compliance, connectedTo, Voter Education Programs>
+<Public Trust Building, connectedTo, Biometric Voter ID>
+<Public Trust Building, partOf, Optical Scan Systems>
+<Risk Management for Elections, connectedTo, Auditability>
+<Risk Management for Elections, connectedTo, Cryptographic Security>
+<Risk Management for Elections, connectedTo, System Certification>
+<Secure Data Transmission, connectedTo, Risk Management for Elections>
+<Secure Data Transmission, partOf, Transparency>
+<Security Protocols, connectedTo, Touchscreen Voting Machines>
+<Touchscreen Voting Machines, connectedTo, Legal Framework Compliance>
+<Touchscreen Voting Machines, connectedTo, Undue Influence Prevention>
+<Undue Influence Prevention, connectedTo, Vote Counting>
+<Undue Influence Prevention, partOf, Transparency>
+<Vote Counting, connectedTo, Voter Authentication>
+<Vote Counting, partOf, Transparency>
+<Voter Authentication, connectedTo, Secure Data Transmission>
+<Voter Authentication, partOf, Transparency>
+<Voter Education Programs, connectedTo, Blockchain for Voting>
+<Voter Education Programs, connectedTo, System Certification>
diff --git a/train/mermaid/hard/mermaid_746.mmd b/train/mermaid/hard/mermaid_746.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fc8197c01f1bc4067da24838de9c048e48710b42
--- /dev/null
+++ b/train/mermaid/hard/mermaid_746.mmd
@@ -0,0 +1,130 @@
+graph BT
+    N0([Election Official Training])
+    N1[Zero_Knowledge Proofs for Privacy]
+    N2[(Public Trust Building)]
+    N3[Voter Education Programs]
+    N4[[Legal Framework Compliance]]
+    N5([Risk Management for Elections])
+    N6[[System Certification]]
+    N7[(Vote Counting)]
+    N8[Results Aggregation]
+    N9{Voter Privacy Protection}
+    N10[[Post_Election Audits]]
+    N11(Threat Modeling)
+    N12(Touchscreen Voting Machines)
+    N13([Penetration Testing])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Blockchain for Voting
+        nest0_0(Voting Machine Design)
+        nest0_1[Secure Data Transmission]
+        nest0_2[Cybersecurity for Voting Systems]
+        nest0_3[(Software Integrity Checks)]
+    end
+    subgraph Accessibility Features
+        nest1_0[(Voter Registration)]
+        nest1_1(Auditability)
+        nest1_2[[Undue Influence Prevention]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |facilitates| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 --> |audits| nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N12 -.-> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N10 -.-> nest1_0
+    nest1_2 -.-> N4
+    N8 --> S0
+    S0 --> |educates| N12
+    S0 -.-> N13
+    N7 -.-> S1
+    S1 -.-> N9
+    S1 --> N10
+    S1 -.-> N12
+    N10 --> S2
+    S2 -.-> N13
+    S2 -.-> N12
+    N1 --> M0
+    N4 -.-> M0
+    N0 -.-> M0
+    N3 -.-> M0
+    M0 --> N6
+    style N0 fill:#EDE7F6,stroke:#9575CD
+    style N1 fill:#EDE7F6,stroke:#9575CD
+    style N2 fill:#F5F5F5,stroke:#BDBDBD
+    style N3 fill:#EDE7F6,stroke:#9575CD
+    style N4 fill:#F1F8FF,stroke:#42A5F5
+    style N5 fill:#F1F8FF,stroke:#42A5F5
+    style N6 fill:#F1F8FF,stroke:#42A5F5
+    style N7 fill:#F1F8FF,stroke:#42A5F5
+    style N8 fill:#F5F5F5,stroke:#BDBDBD
+    style N9 fill:#F5F5F5,stroke:#BDBDBD
+    style N10 fill:#F5F5F5,stroke:#BDBDBD
+    style N11 fill:#EDE7F6,stroke:#9575CD
+    style N12 fill:#F5F5F5,stroke:#BDBDBD
+    style N13 fill:#F5F5F5,stroke:#BDBDBD
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style S2 fill:#EDE7F6,stroke:#9575CD
+    style M0 fill:#EDE7F6,stroke:#9575CD
+    style nest0_0 fill:#EDE7F6,stroke:#9575CD
+    style nest0_1 fill:#F1F8FF,stroke:#42A5F5
+    style nest0_2 fill:#EDE7F6,stroke:#9575CD
+    style nest0_3 fill:#EDE7F6,stroke:#9575CD
+    style nest1_0 fill:#F1F8FF,stroke:#42A5F5
+    style nest1_1 fill:#F1F8FF,stroke:#42A5F5
+    style nest1_2 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_748.mmd b/train/mermaid/hard/mermaid_748.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..da76033fc35262b8eee4f7ba18339d68ef29de5a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_748.mmd
@@ -0,0 +1,120 @@
+graph TD
+    N0([Transparency])
+    N1(Secure Data Transmission)
+    N2(Vote Counting)
+    N3([Zero_Knowledge Proofs for Privacy])
+    N4[(Anonymous Credential Systems)]
+    N5[[Post_Election Audits]]
+    N6[Legal Framework Compliance]
+    N7[[Software Integrity Checks]]
+    N8[Accessibility Features]
+    N9{Voting Machine Design}
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Undue Influence Prevention
+        nest0_0[/Direct Recording Electronic Systems/]
+        nest0_1[Voter Authentication]
+    end
+    subgraph Risk Management for Elections
+        nest1_0[[Voter Privacy Protection]]
+        nest1_1(Remote Voting Solutions)
+        nest1_2(Cryptographic Security)
+        nest1_3[Public Trust Building]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    nest0_0 --> nest0_1
+    N1 -.-> nest0_0
+    nest0_1 -.-> N9
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N6 --> nest1_0
+    nest1_3 -.-> N4
+    N6 --> S0
+    S0 -.-> N8
+    S0 --> N9
+    N3 -.-> S1
+    S1 --> N6
+    S1 --> N9
+    S1 -.-> N8
+    S1 --> N7
+    N2 --> M0
+    N0 -.-> M0
+    N5 --> M0
+    N4 -.-> M0
+    M0 -.-> N9
+    N1 --> M1
+    N0 --> M1
+    M1 -.-> N3
+    N0 --> M2
+    N1 -.-> M2
+    M2 --> N4
+    style N0 fill:#D0E0F8,stroke:#4285F4
+    style N1 fill:#D0E0F8,stroke:#4285F4
+    style N2 fill:#D0E0F8,stroke:#4285F4
+    style N3 fill:#FFDAB9,stroke:#FFC085
+    style N4 fill:#FFDAB9,stroke:#FFC085
+    style N5 fill:#C8E6C9,stroke:#388E3C
+    style N6 fill:#FFDAB9,stroke:#FFC085
+    style N7 fill:#D0E0F8,stroke:#4285F4
+    style N8 fill:#C8E6C9,stroke:#388E3C
+    style N9 fill:#FFDAB9,stroke:#FFC085
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#D0E0F8,stroke:#4285F4
+    style M0 fill:#FFDAB9,stroke:#FFC085
+    style M1 fill:#D0E0F8,stroke:#4285F4
+    style M2 fill:#C8E6C9,stroke:#388E3C
+    style nest0_0 fill:#D0E0F8,stroke:#4285F4
+    style nest0_1 fill:#C8E6C9,stroke:#388E3C
+    style nest1_0 fill:#C8E6C9,stroke:#388E3C
+    style nest1_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_2 fill:#FFDAB9,stroke:#FFC085
+    style nest1_3 fill:#FFDAB9,stroke:#FFC085
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFC085,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_749.mmd b/train/mermaid/hard/mermaid_749.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ab086fe26da17e9bc78097241aecfeec88c65576
--- /dev/null
+++ b/train/mermaid/hard/mermaid_749.mmd
@@ -0,0 +1,136 @@
+graph BT
+    N0([Results Aggregation])
+    N1[(Biometric Voter ID)]
+    N2[(Public Trust Building)]
+    N3{Hardware Tamper Detection}
+    N4(Security Protocols)
+    N5[[Penetration Testing]]
+    N6[[Software Integrity Checks]]
+    N7[Secure Data Transmission]
+    N8[[Voting Machine Design]]
+    N9[Election Official Training]
+    N10[Anonymous Credential Systems]
+    N11(Voter Authentication)
+    N12[/Legal Framework Compliance/]
+    N13(Remote Voting Solutions)
+    N14([Online Voting Systems])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Voter Privacy Protection
+        nest0_0[[Post_Election Audits]]
+        nest0_1{Touchscreen Voting Machines}
+        nest0_2{Transparency}
+        nest0_3(System Certification)
+    end
+    subgraph Cybersecurity for Voting Systems
+        nest1_0([Ballot Creation])
+        nest1_1{Undue Influence Prevention}
+        nest1_2[[Direct Recording Electronic Systems]]
+        nest1_3(Zero_Knowledge Proofs for Privacy)
+    end
+    N0 -.-> |displays| N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> |transmits| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 -.-> nest0_0
+    nest0_3 --> N1
+    nest1_0 --> nest1_1
+    nest1_1 -.-> |stores| nest1_2
+    nest1_2 --> nest1_3
+    N13 -.-> nest1_0
+    nest1_3 --> N8
+    N8 --> S0
+    S0 -.-> N11
+    S0 --> N13
+    N8 --> S1
+    S1 -.-> N13
+    S1 --> N10
+    S1 -.-> |accesses| N14
+    N5 --> M0
+    N6 --> M0
+    M0 -.-> N8
+    N2 -.-> M1
+    N1 -.-> M1
+    N0 --> M1
+    M1 --> N4
+    style N0 fill:#DFE7EB,stroke:#B0C5CD
+    style N1 fill:#E6EE9C,stroke:#CDDC39
+    style N2 fill:#E6EE9C,stroke:#CDDC39
+    style N3 fill:#DFE7EB,stroke:#B0C5CD
+    style N4 fill:#DFE7EB,stroke:#B0C5CD
+    style N5 fill:#DFE7EB,stroke:#B0C5CD
+    style N6 fill:#E6EE9C,stroke:#CDDC39
+    style N7 fill:#E0F7FA,stroke:#00BCD4
+    style N8 fill:#E0F7FA,stroke:#00BCD4
+    style N9 fill:#DFE7EB,stroke:#B0C5CD
+    style N10 fill:#E6EE9C,stroke:#CDDC39
+    style N11 fill:#E6EE9C,stroke:#CDDC39
+    style N12 fill:#E0F7FA,stroke:#00BCD4
+    style N13 fill:#DFE7EB,stroke:#B0C5CD
+    style N14 fill:#E6EE9C,stroke:#CDDC39
+    style S0 fill:#E0F7FA,stroke:#00BCD4
+    style S1 fill:#E0F7FA,stroke:#00BCD4
+    style M0 fill:#DFE7EB,stroke:#B0C5CD
+    style M1 fill:#E6EE9C,stroke:#CDDC39
+    style nest0_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_1 fill:#E0F7FA,stroke:#00BCD4
+    style nest0_2 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_3 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_0 fill:#E0F7FA,stroke:#00BCD4
+    style nest1_1 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_2 fill:#DFE7EB,stroke:#B0C5CD
+    style nest1_3 fill:#E6EE9C,stroke:#CDDC39
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#CDDC39,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_75.mmd b/train/mermaid/hard/mermaid_75.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2335579b4347e9866db94a0ccd032584c5ae7bf2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_75.mmd
@@ -0,0 +1,102 @@
+graph RL
+    N0([Plan Suspension])
+    N1[[Antenna Maintenance]]
+    N2(Number Porting)
+    N3{Plan Renewal}
+    N4{Roaming Activation}
+    N5(Plan Selection)
+    N6[(Usage Monitoring)]
+    N7[(Technical Support Escalation)]
+    N8{Base Station Installation}
+    N9[(Network Security Monitoring)]
+    N10[[Contract Termination]]
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Service Complaint
+        nest0_0([Outage Detection])
+        nest0_1[MMS Transmission]
+        nest0_2(Mobile Top_up)
+    end
+    subgraph Issue Resolution
+        nest1_0[[Data Usage Logging]]
+        nest1_1[Network Upgrade]
+    end
+    N0 --> |licenses| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> |installs| N10
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N1 -.-> nest0_0
+    nest0_2 -.-> N1
+    nest1_0 -.-> nest1_1
+    N7 -.-> |generates| nest1_0
+    nest1_1 -.-> N5
+    N4 -.-> S1
+    S1 --> N10
+    S1 -.-> N8
+    N0 -.-> M0
+    N2 --> |maintains| M0
+    N1 --> M0
+    M0 --> N4
+    N2 -.-> M1
+    N1 --> M1
+    N0 -.-> |analyzes| M1
+    N3 --> M1
+    M1 --> N5
+    style N0 fill:#E1BEE7,stroke:#9C27B0
+    style N1 fill:#E0F2F1,stroke:#4DB6AC
+    style N2 fill:#E0F2F1,stroke:#4DB6AC
+    style N3 fill:#FFFAE0,stroke:#FFE470
+    style N4 fill:#FFFAE0,stroke:#FFE470
+    style N5 fill:#E0F2F1,stroke:#4DB6AC
+    style N6 fill:#E1BEE7,stroke:#9C27B0
+    style N7 fill:#E0F2F1,stroke:#4DB6AC
+    style N8 fill:#E0F2F1,stroke:#4DB6AC
+    style N9 fill:#E0F2F1,stroke:#4DB6AC
+    style N10 fill:#E0F2F1,stroke:#4DB6AC
+    style S1 fill:#FFFAE0,stroke:#FFE470
+    style M0 fill:#FFFAE0,stroke:#FFE470
+    style M1 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_0 fill:#FFFAE0,stroke:#FFE470
+    style nest0_1 fill:#FFFAE0,stroke:#FFE470
+    style nest0_2 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_0 fill:#FFFAE0,stroke:#FFE470
+    style nest1_1 fill:#E1BEE7,stroke:#9C27B0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFE470,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#9C27B0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_75.txt b/train/mermaid/hard/mermaid_75.txt
new file mode 100644
index 0000000000000000000000000000000000000000..832972a2c6753fe2de2a08dc8c67834b7804ec98
--- /dev/null
+++ b/train/mermaid/hard/mermaid_75.txt
@@ -0,0 +1,31 @@
+<Antenna Maintenance, connectedTo, Number Porting>
+<Antenna Maintenance, connectedTo, Outage Detection>
+<Antenna Maintenance, connectedTo, Plan Selection>
+<Antenna Maintenance, connectedTo, Roaming Activation>
+<Base Station Installation, connectedTo, Network Security Monitoring>
+<Data Usage Logging, connectedTo, Network Upgrade>
+<Data Usage Logging, partOf, Issue Resolution>
+<MMS Transmission, connectedTo, Mobile Top_up>
+<MMS Transmission, partOf, Service Complaint>
+<Mobile Top_up, connectedTo, Antenna Maintenance>
+<Mobile Top_up, partOf, Service Complaint>
+<Network Security Monitoring, installs, Contract Termination>
+<Network Upgrade, connectedTo, Plan Selection>
+<Network Upgrade, partOf, Issue Resolution>
+<Number Porting, connectedTo, Plan Renewal>
+<Number Porting, connectedTo, Plan Selection>
+<Number Porting, maintains, Roaming Activation>
+<Outage Detection, connectedTo, MMS Transmission>
+<Outage Detection, partOf, Service Complaint>
+<Plan Renewal, connectedTo, Plan Selection>
+<Plan Renewal, connectedTo, Roaming Activation>
+<Plan Selection, connectedTo, Usage Monitoring>
+<Plan Suspension, analyzes, Plan Selection>
+<Plan Suspension, connectedTo, Roaming Activation>
+<Plan Suspension, licenses, Antenna Maintenance>
+<Roaming Activation, connectedTo, Base Station Installation>
+<Roaming Activation, connectedTo, Contract Termination>
+<Roaming Activation, connectedTo, Plan Selection>
+<Technical Support Escalation, connectedTo, Base Station Installation>
+<Technical Support Escalation, generates, Data Usage Logging>
+<Usage Monitoring, connectedTo, Technical Support Escalation>
diff --git a/train/mermaid/hard/mermaid_750.txt b/train/mermaid/hard/mermaid_750.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d3465764b39df9b3517745e0698b1a7b40dd19de
--- /dev/null
+++ b/train/mermaid/hard/mermaid_750.txt
@@ -0,0 +1,42 @@
+<Accessibility Features, connectedTo, Hardware Tamper Detection>
+<Accessibility Features, connectedTo, Security Protocols>
+<Anonymous Credential Systems, connectedTo, Voter Authentication>
+<Auditability, connectedTo, System Certification>
+<Auditability, partOf, Remote Voting Solutions>
+<Ballot Creation, connectedTo, Cryptographic Security>
+<Ballot Creation, connectedTo, Risk Management for Elections>
+<Biometric Voter ID, connectedTo, Ballot Creation>
+<Cryptographic Security, connectedTo, Threat Modeling>
+<Election Official Training, connectedTo, Post_Election Audits>
+<Hardware Tamper Detection, connectedTo, Security Protocols>
+<Hardware Tamper Detection, connectedTo, Transparency>
+<Legal Framework Compliance, connectedTo, Anonymous Credential Systems>
+<Legal Framework Compliance, connectedTo, Security Protocols>
+<Optical Scan Systems, connectedTo, Auditability>
+<Optical Scan Systems, connectedTo, Cryptographic Security>
+<Optical Scan Systems, connectedTo, Election Official Training>
+<Optical Scan Systems, connectedTo, Post_Election Audits>
+<Penetration Testing, casts, Security Protocols>
+<Post_Election Audits, connectedTo, Biometric Voter ID>
+<Risk Management for Elections, connectedTo, Legal Framework Compliance>
+<Security Protocols, connectedTo, end>
+<System Certification, connectedTo, Ballot Creation>
+<System Certification, partOf, Remote Voting Solutions>
+<Threat Modeling, connectedTo, Accessibility Features>
+<Threat Modeling, connectedTo, Penetration Testing>
+<Threat Modeling, connectedTo, Transparency>
+<Threat Modeling, connectedTo, Voting Machine Design>
+<Touchscreen Voting Machines, connectedTo, Accessibility Features>
+<Touchscreen Voting Machines, connectedTo, Cryptographic Security>
+<Touchscreen Voting Machines, connectedTo, Security Protocols>
+<Transparency, connectedTo, Penetration Testing>
+<Transparency, connectedTo, Vote Counting>
+<Undue Influence Prevention, connectedTo, Optical Scan Systems>
+<Undue Influence Prevention, connectedTo, Post_Election Audits>
+<Vote Counting, connectedTo, Voter Education Programs>
+<Vote Counting, partOf, Software Integrity Checks>
+<Voter Authentication, connectedTo, Touchscreen Voting Machines>
+<Voter Authentication, recovers, Cryptographic Security>
+<Voter Education Programs, connectedTo, Election Official Training>
+<Voter Education Programs, partOf, Software Integrity Checks>
+<Voting Machine Design, connectedTo, Accessibility Features>
diff --git a/train/mermaid/hard/mermaid_751.txt b/train/mermaid/hard/mermaid_751.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2b77b88c6da581b8ba875b2a629c85659863e457
--- /dev/null
+++ b/train/mermaid/hard/mermaid_751.txt
@@ -0,0 +1,38 @@
+<Anonymous Credential Systems, connectedTo, Voter Education Programs>
+<Ballot Creation, connectedTo, Anonymous Credential Systems>
+<Biometric Voter ID, connectedTo, Cryptographic Security>
+<Biometric Voter ID, connectedTo, Election Official Training>
+<Biometric Voter ID, connectedTo, Voting Machine Design>
+<Blockchain for Voting, connectedTo, Ballot Creation>
+<Cryptographic Security, connectedTo, Voter Registration>
+<Cybersecurity for Voting Systems, connectedTo, Penetration Testing>
+<Cybersecurity for Voting Systems, connectedTo, Transparency>
+<Optical Scan Systems, connectedTo, Zero_Knowledge Proofs for Privacy>
+<Penetration Testing, connectedTo, Public Trust Building>
+<Penetration Testing, connectedTo, Voting Machine Design>
+<Penetration Testing, partOf, Legal Framework Compliance>
+<Post_Election Audits, connectedTo, Biometric Voter ID>
+<Public Trust Building, connectedTo, Optical Scan Systems>
+<Public Trust Building, connectedTo, Undue Influence Prevention>
+<Public Trust Building, partOf, Legal Framework Compliance>
+<Remote Voting Solutions, connectedTo, Anonymous Credential Systems>
+<Remote Voting Solutions, partOf, Hardware Tamper Detection>
+<Results Aggregation, connectedTo, Remote Voting Solutions>
+<Results Aggregation, partOf, Hardware Tamper Detection>
+<Security Protocols, connectedTo, Voting Machine Design>
+<Software Integrity Checks, connectedTo, Cybersecurity for Voting Systems>
+<Transparency, connectedTo, Election Official Training>
+<Transparency, connectedTo, Security Protocols>
+<Transparency, connectedTo, Voting Machine Design>
+<Undue Influence Prevention, connectedTo, Optical Scan Systems>
+<Undue Influence Prevention, partOf, Legal Framework Compliance>
+<Vote Counting, connectedTo, Results Aggregation>
+<Vote Counting, partOf, Hardware Tamper Detection>
+<Voter Education Programs, connectedTo, Software Integrity Checks>
+<Voter Education Programs, upgrades, Voter Registration>
+<Voter Registration, connectedTo, Cybersecurity for Voting Systems>
+<Voter Registration, connectedTo, Software Integrity Checks>
+<Voter Registration, connectedTo, Vote Counting>
+<Voter Registration, transmits, Optical Scan Systems>
+<Voting Machine Design, connectedTo, Election Official Training>
+<Zero_Knowledge Proofs for Privacy, registers, Blockchain for Voting>
diff --git a/train/mermaid/hard/mermaid_752.mmd b/train/mermaid/hard/mermaid_752.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d9a6f1c80b8ab2a4ac8eee6d6333cf21dbda5c03
--- /dev/null
+++ b/train/mermaid/hard/mermaid_752.mmd
@@ -0,0 +1,118 @@
+graph TD
+    N0([Cybersecurity for Voting Systems])
+    N1(Threat Modeling)
+    N2[[Optical Scan Systems]]
+    N3[[Auditability]]
+    N4[[Risk Management for Elections]]
+    N5[(Secure Data Transmission)]
+    N6[Security Protocols]
+    N7[[Software Integrity Checks]]
+    N8(Public Trust Building)
+    N9[Undue Influence Prevention]
+    N10[Vote Counting]
+    N11(Touchscreen Voting Machines)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Transparency
+        nest0_0(Voter Registration)
+        nest0_1(Ballot Creation)
+    end
+    subgraph Post_Election Audits
+        nest1_0(Legal Framework Compliance)
+        nest1_1[Blockchain for Voting]
+        nest1_2{Hardware Tamper Detection}
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> |decrypts| N10
+    N10 --> N11
+    nest0_0 -.-> nest0_1
+    N1 -.-> nest0_0
+    nest0_1 -.-> N11
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N6 --> nest1_0
+    nest1_2 --> N2
+    N1 --> S0
+    S0 -.-> N4
+    S0 -.-> N7
+    N8 -.-> S1
+    S1 -.-> |displays| N11
+    S1 --> N10
+    N3 -.-> S2
+    S2 -.-> |facilitates| N11
+    S2 --> N10
+    N1 -.-> M0
+    N2 --> M0
+    N0 -.-> M0
+    M0 --> N4
+    N4 -.-> M1
+    N6 -.-> M1
+    M1 --> N9
+    style N0 fill:#EBEBEB,stroke:#E0E0E0
+    style N1 fill:#CADEDE,stroke:#94C0C0
+    style N2 fill:#EBEBEB,stroke:#E0E0E0
+    style N3 fill:#CADEDE,stroke:#94C0C0
+    style N4 fill:#EBEBEB,stroke:#E0E0E0
+    style N5 fill:#F8BBD0,stroke:#E91E63
+    style N6 fill:#F8BBD0,stroke:#E91E63
+    style N7 fill:#EBEBEB,stroke:#E0E0E0
+    style N8 fill:#F8BBD0,stroke:#E91E63
+    style N9 fill:#CADEDE,stroke:#94C0C0
+    style N10 fill:#F8BBD0,stroke:#E91E63
+    style N11 fill:#EBEBEB,stroke:#E0E0E0
+    style S0 fill:#CADEDE,stroke:#94C0C0
+    style S1 fill:#F8BBD0,stroke:#E91E63
+    style S2 fill:#EBEBEB,stroke:#E0E0E0
+    style M0 fill:#EBEBEB,stroke:#E0E0E0
+    style M1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest0_0 fill:#CADEDE,stroke:#94C0C0
+    style nest0_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_0 fill:#CADEDE,stroke:#94C0C0
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    style nest1_2 fill:#EBEBEB,stroke:#E0E0E0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#94C0C0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_753.mmd b/train/mermaid/hard/mermaid_753.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b00a382bc3632d4eaf1b0373b2a76a720065f649
--- /dev/null
+++ b/train/mermaid/hard/mermaid_753.mmd
@@ -0,0 +1,123 @@
+graph BT
+    N0([start])
+    N1[(Policy Brief Writing)]
+    N2[Policy Advocacy and Lobbying]
+    N3{Qualitative Analysis}
+    N4(Cost_Benefit Analysis)
+    N5[/Comparative Policy Analysis/]
+    N6[/Monitoring and Evaluation Framework/]
+    N7[Behavioral Economics in Policy]
+    N8{Policy Evaluation}
+    N9(Interagency Coordination)
+    N10[Advocacy Strategy]
+    N11(Report Drafting)
+    N12[[Problem Identification]]
+    N13[[Communication Strategy]]
+    N14(Quantitative Analysis)
+    N15(Risk Assessment)
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Evidence_Based Policymaking
+        nest0_0{Legal Review}
+        nest0_1(Criteria Establishment)
+    end
+    subgraph International Policy Analysis
+        nest1_0(Program Design)
+        nest1_1(Implementation Plan Development)
+        nest1_2([Budgetary Implications])
+        nest1_3[[Public Consultation Process]]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> |yes| N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    N12 -.-> |yes| nest0_0
+    nest0_1 -.-> N13
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N8 -.-> |yes| nest1_0
+    nest1_3 --> N9
+    N12 --> S0
+    S0 -.-> N14
+    S0 -.-> N15
+    N13 -.-> S1
+    S1 --> N16
+    S1 --> N15
+    N0 -.-> |yes| M0
+    N1 --> M0
+    N2 -.-> M0
+    M0 --> N6
+    N6 -.-> |no| M1
+    N4 -.-> M1
+    N2 -.-> M1
+    N5 --> M1
+    M1 -.-> N8
+    N0 -.-> M2
+    N1 -.-> M2
+    M2 --> N3
+    style S0 fill:#FFEBEE,stroke:#E57373
+    style S1 fill:#FFDCD6,stroke:#FFB2A5
+    style M0 fill:#FFDCD6,stroke:#FFB2A5
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style M2 fill:#FFF3E0,stroke:#FFA726
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_754.mmd b/train/mermaid/hard/mermaid_754.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d3a5bb6da62bcf03572774cae571ce8259f432e0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_754.mmd
@@ -0,0 +1,128 @@
+graph LR
+    N0([start])
+    N1{Communication Strategy}
+    N2[(Quantitative Analysis)]
+    N3[Regulatory Impact Assessment]
+    N4(Monitoring and Evaluation Framework)
+    N5{Comparative Policy Analysis}
+    N6[(Ethical Considerations)]
+    N7[Policy Simulation Models]
+    N8[Criteria Establishment]
+    N9[[Policy Advocacy and Lobbying]]
+    N10{Interagency Coordination}
+    N11[Advocacy Strategy]
+    N12(Stakeholder Analysis)
+    N13[Qualitative Analysis]
+    N14[[International Policy Analysis]]
+    N15[/Behavioral Economics in Policy/]
+    N16[Policy Evaluation]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Option Generation
+        nest0_0(Policy Learning)
+        nest0_1[Impact Assessment]
+        nest0_2(Evidence_Based Policymaking)
+        nest0_3([Non_profit Policy Influence])
+    end
+    subgraph Implementation Plan Development
+        nest1_0[National Policy Development]
+        nest1_1[[Budgetary Implications]]
+        nest1_2(Legal Review)
+        nest1_3[Data Visualization for Policy]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |yes| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> |no| N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 -.-> N17
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N12 --> nest0_0
+    nest0_3 --> |no| N17
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N10 -.-> nest1_0
+    nest1_3 -.-> N2
+    N7 --> S0
+    S0 --> N12
+    S0 --> N16
+    S0 --> N14
+    S0 -.-> N11
+    N7 --> S1
+    S1 -.-> N11
+    S1 -.-> N12
+    S1 --> N9
+    N1 --> M0
+    N9 -.-> M0
+    N12 -.-> M0
+    M0 -.-> N17
+    N2 --> M1
+    N3 -.-> M1
+    N0 --> |yes| M1
+    M1 --> N5
+    style S0 fill:#ECEFF1,stroke:#90A4AE
+    style S1 fill:#ECEFF1,stroke:#90A4AE
+    style M0 fill:#ECEFF1,stroke:#90A4AE
+    style M1 fill:#ECEFF1,stroke:#90A4AE
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#A1D7CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_755.txt b/train/mermaid/hard/mermaid_755.txt
new file mode 100644
index 0000000000000000000000000000000000000000..09f5a4dcfebae2283d584f886e9556c6facc43ed
--- /dev/null
+++ b/train/mermaid/hard/mermaid_755.txt
@@ -0,0 +1,38 @@
+<Behavioral Economics in Policy, connectedTo, Non_profit Policy Influence>
+<Comparative Policy Analysis, connectedTo, Ethical Considerations>
+<Comparative Policy Analysis, partOf, Feasibility Study>
+<Cost_Benefit Analysis, connectedTo, Recommendation Formulation>
+<Cost_Benefit Analysis, partOf, Feasibility Study>
+<Ethical Considerations, connectedTo, Cost_Benefit Analysis>
+<Ethical Considerations, partOf, Feasibility Study>
+<Forecasting and Scenario Planning, connectedTo, Policy Advocacy and Lobbying>
+<Forecasting and Scenario Planning, partOf, Policy Evaluation>
+<International Policy Analysis, connectedTo, Policy Learning>
+<Legal Review, connectedTo, Comparative Policy Analysis>
+<Legal Review, partOf, Feasibility Study>
+<Monitoring and Evaluation Framework, connectedTo, International Policy Analysis>
+<Monitoring and Evaluation Framework, connectedTo, Policy Brief Writing>
+<Non_profit Policy Influence, connectedTo, International Policy Analysis>
+<Option Generation, connectedTo, Behavioral Economics in Policy>
+<Option Generation, connectedTo, Forecasting and Scenario Planning>
+<Option Generation, yes, Monitoring and Evaluation Framework>
+<Policy Advocacy and Lobbying, connectedTo, Policy Brief Writing>
+<Policy Advocacy and Lobbying, partOf, Policy Evaluation>
+<Policy Brief Writing, connectedTo, Behavioral Economics in Policy>
+<Policy Brief Writing, connectedTo, Legal Review>
+<Policy Brief Writing, connectedTo, Recommendation Formulation>
+<Political Feasibility Assessment, yes, Behavioral Economics in Policy>
+<Presentation Skills, connectedTo, Behavioral Economics in Policy>
+<Presentation Skills, connectedTo, International Policy Analysis>
+<Presentation Skills, no, Option Generation>
+<Recommendation Formulation, connectedTo, International Policy Analysis>
+<Recommendation Formulation, connectedTo, Political Feasibility Assessment>
+<start, connectedTo, International Policy Analysis>
+<start, connectedTo, Non_profit Policy Influence>
+<start, connectedTo, Option Generation>
+<start, connectedTo, Policy Brief Writing>
+<start, connectedTo, Political Feasibility Assessment>
+<start, connectedTo, Presentation Skills>
+<start, connectedTo, Recommendation Formulation>
+<start, no, Monitoring and Evaluation Framework>
+<start, yes, Monitoring and Evaluation Framework>
diff --git a/train/mermaid/hard/mermaid_756.mmd b/train/mermaid/hard/mermaid_756.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e3aa0ec8514ea070d392996826482f9740bed6b7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_756.mmd
@@ -0,0 +1,121 @@
+graph BT
+    N0([start])
+    N1(Policy Brief Writing)
+    N2(Monitoring and Evaluation Framework)
+    N3[/Policy Evaluation/]
+    N4[(Option Generation)]
+    N5{Public Opinion Research}
+    N6[/Problem Identification/]
+    N7[/National Policy Development/]
+    N8[Political Feasibility Assessment]
+    N9(Impact Assessment)
+    N10[Presentation Skills]
+    N11[/Forecasting and Scenario Planning/]
+    N12{Advocacy Strategy}
+    N13[Report Drafting]
+    N14[/Legal Review/]
+    N15(International Policy Analysis)
+    N16([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Non_profit Policy Influence
+        nest0_0[/Criteria Establishment/]
+        nest0_1(Comparative Policy Analysis)
+        nest0_2(Policy Simulation Models)
+        nest0_3(Stakeholder Analysis)
+    end
+    subgraph Regulatory Impact Assessment
+        nest1_0[Quantitative Analysis]
+        nest1_1([Feasibility Study])
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N3 -.-> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 -.-> nest1_1
+    N14 --> nest1_0
+    nest1_1 -.-> N7
+    N4 --> S0
+    S0 --> N15
+    S0 -.-> N9
+    N11 --> S1
+    S1 -.-> N13
+    S1 --> N15
+    S1 --> N16
+    N3 --> M0
+    N2 -.-> M0
+    N1 -.-> M0
+    M0 --> N5
+    N1 --> M1
+    N4 --> M1
+    M1 -.-> N10
+    N3 -.-> M2
+    N11 --> M2
+    M2 --> N14
+    style S0 fill:#F5F5DC,stroke:#BCB88A
+    style S1 fill:#F5F5DC,stroke:#BCB88A
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    style M1 fill:#F5F5DC,stroke:#BCB88A
+    style M2 fill:#F5F5DC,stroke:#BCB88A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BCB88A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#C0CA33,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_756.txt b/train/mermaid/hard/mermaid_756.txt
new file mode 100644
index 0000000000000000000000000000000000000000..39cf7f3b53bc06387339303502c199fc501d4ed1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_756.txt
@@ -0,0 +1,42 @@
+<Advocacy Strategy, connectedTo, Report Drafting>
+<Comparative Policy Analysis, connectedTo, Policy Simulation Models>
+<Comparative Policy Analysis, partOf, Non_profit Policy Influence>
+<Criteria Establishment, connectedTo, Comparative Policy Analysis>
+<Criteria Establishment, partOf, Non_profit Policy Influence>
+<Feasibility Study, connectedTo, National Policy Development>
+<Feasibility Study, partOf, Regulatory Impact Assessment>
+<Forecasting and Scenario Planning, connectedTo, Advocacy Strategy>
+<Forecasting and Scenario Planning, connectedTo, International Policy Analysis>
+<Forecasting and Scenario Planning, connectedTo, Legal Review>
+<Forecasting and Scenario Planning, connectedTo, Report Drafting>
+<Forecasting and Scenario Planning, connectedTo, end>
+<Impact Assessment, connectedTo, Presentation Skills>
+<International Policy Analysis, connectedTo, end>
+<Legal Review, connectedTo, International Policy Analysis>
+<Legal Review, connectedTo, Quantitative Analysis>
+<Monitoring and Evaluation Framework, connectedTo, Policy Evaluation>
+<Monitoring and Evaluation Framework, connectedTo, Public Opinion Research>
+<National Policy Development, connectedTo, Political Feasibility Assessment>
+<Option Generation, connectedTo, Impact Assessment>
+<Option Generation, connectedTo, International Policy Analysis>
+<Option Generation, connectedTo, Presentation Skills>
+<Option Generation, connectedTo, Public Opinion Research>
+<Policy Brief Writing, connectedTo, Monitoring and Evaluation Framework>
+<Policy Brief Writing, connectedTo, Presentation Skills>
+<Policy Brief Writing, connectedTo, Public Opinion Research>
+<Policy Evaluation, connectedTo, Criteria Establishment>
+<Policy Evaluation, connectedTo, Legal Review>
+<Policy Evaluation, connectedTo, Option Generation>
+<Policy Evaluation, connectedTo, Public Opinion Research>
+<Policy Simulation Models, connectedTo, Stakeholder Analysis>
+<Policy Simulation Models, partOf, Non_profit Policy Influence>
+<Political Feasibility Assessment, connectedTo, Impact Assessment>
+<Presentation Skills, connectedTo, Forecasting and Scenario Planning>
+<Problem Identification, connectedTo, National Policy Development>
+<Public Opinion Research, connectedTo, Problem Identification>
+<Quantitative Analysis, connectedTo, Feasibility Study>
+<Quantitative Analysis, partOf, Regulatory Impact Assessment>
+<Report Drafting, connectedTo, Legal Review>
+<Stakeholder Analysis, connectedTo, Presentation Skills>
+<Stakeholder Analysis, partOf, Non_profit Policy Influence>
+<start, connectedTo, Policy Brief Writing>
diff --git a/train/mermaid/hard/mermaid_757.mmd b/train/mermaid/hard/mermaid_757.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..65010ef9478dac872abb23de57bcbf575e3a27dc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_757.mmd
@@ -0,0 +1,164 @@
+graph RL
+    N0([Recommendation Formulation])
+    N1(Interagency Coordination)
+    N2(Cost_Benefit Analysis)
+    N3[/Monitoring and Evaluation Framework/]
+    N4(Comparative Policy Analysis)
+    N5([Criteria Establishment])
+    N6[(International Policy Analysis)]
+    N7(National Policy Development)
+    N8[[Quantitative Analysis]]
+    N9(Communication Strategy)
+    N10[Ethical Considerations]
+    N11[(Stakeholder Analysis)]
+    N12{Presentation Skills}
+    N13(Legal Review)
+    N14(Risk Assessment)
+    N15([Qualitative Analysis])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Advocacy Strategy
+        nest0_0[(Evidence_Based Policymaking)]
+        nest0_1[[Program Design]]
+        nest0_2[[Problem Identification]]
+        nest0_3[/Political Feasibility Assessment/]
+    end
+    subgraph Public Opinion Research
+        nest1_0([Non_profit Policy Influence])
+        nest1_1[Regulatory Impact Assessment]
+        nest1_2{Policy Learning}
+        nest1_3([Impact Assessment])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 --> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N14 --> nest0_0
+    nest0_3 -.-> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N4 --> |validates| nest1_0
+    nest1_3 -.-> N14
+    N2 -.-> S0
+    S0 --> N12
+    S0 --> N13
+    N11 --> S1
+    S1 -.-> N13
+    S1 --> N14
+    S1 --> N15
+    N9 -.-> S2
+    S2 -.-> N13
+    S2 -.-> N15
+    S2 --> N11
+    S2 -.-> N14
+    N0 -.-> M0
+    N5 -.-> M0
+    M0 -.-> N7
+    N5 --> M1
+    N3 -.-> M1
+    N6 -.-> M1
+    N1 -.-> M1
+    M1 -.-> N8
+    N8 --> M2
+    N1 --> M2
+    N11 --> M2
+    M2 --> N14
+    style N0 fill:#E8F0EA,stroke:#92C79A
+    style N1 fill:#FCE4EC,stroke:#E91E63
+    style N2 fill:#D0EFEE,stroke:#73C6BC
+    style N3 fill:#E8F0EA,stroke:#92C79A
+    style N4 fill:#D0EFEE,stroke:#73C6BC
+    style N5 fill:#E8F0EA,stroke:#92C79A
+    style N6 fill:#D0EFEE,stroke:#73C6BC
+    style N7 fill:#E8F0EA,stroke:#92C79A
+    style N8 fill:#FCE4EC,stroke:#E91E63
+    style N9 fill:#E8F0EA,stroke:#92C79A
+    style N10 fill:#E8F0EA,stroke:#92C79A
+    style N11 fill:#D0EFEE,stroke:#73C6BC
+    style N12 fill:#E8F0EA,stroke:#92C79A
+    style N13 fill:#E8F0EA,stroke:#92C79A
+    style N14 fill:#FCE4EC,stroke:#E91E63
+    style N15 fill:#FCE4EC,stroke:#E91E63
+    style S0 fill:#FCE4EC,stroke:#E91E63
+    style S1 fill:#FCE4EC,stroke:#E91E63
+    style S2 fill:#FCE4EC,stroke:#E91E63
+    style M0 fill:#FCE4EC,stroke:#E91E63
+    style M1 fill:#E8F0EA,stroke:#92C79A
+    style M2 fill:#E8F0EA,stroke:#92C79A
+    style nest0_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_1 fill:#FCE4EC,stroke:#E91E63
+    style nest0_2 fill:#D0EFEE,stroke:#73C6BC
+    style nest0_3 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_0 fill:#FCE4EC,stroke:#E91E63
+    style nest1_1 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_2 fill:#E8F0EA,stroke:#92C79A
+    style nest1_3 fill:#D0EFEE,stroke:#73C6BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 47 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 48 stroke:#73C6BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_758.txt b/train/mermaid/hard/mermaid_758.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fe920f8c09e3d7bcded5d90744193d9a6b61b2c7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_758.txt
@@ -0,0 +1,29 @@
+<Communication Strategy, connectedTo, Non_profit Policy Influence>
+<Communication Strategy, partOf, Policy Evaluation>
+<Ethical Considerations, connectedTo, Forecasting and Scenario Planning>
+<Ethical Considerations, partOf, Qualitative Analysis>
+<Forecasting and Scenario Planning, connectedTo, Legal Review>
+<Forecasting and Scenario Planning, partOf, Qualitative Analysis>
+<Implementation Plan Development, connectedTo, Ethical Considerations>
+<Implementation Plan Development, partOf, Qualitative Analysis>
+<Interagency Coordination, connectedTo, Data Visualization for Policy>
+<Interagency Coordination, connectedTo, Policy Brief Writing>
+<Interagency Coordination, connectedTo, Policy Simulation Models>
+<Legal Review, connectedTo, Interagency Coordination>
+<Legal Review, connectedTo, Report Drafting>
+<Local Government Policy, connectedTo, Interagency Coordination>
+<Local Government Policy, connectedTo, Legal Review>
+<Local Government Policy, connectedTo, Policy Simulation Models>
+<Non_profit Policy Influence, connectedTo, Data Visualization for Policy>
+<Non_profit Policy Influence, partOf, Policy Evaluation>
+<Policy Brief Writing, connectedTo, Policy Simulation Models>
+<Policy Learning, connectedTo, Program Design>
+<Policy Learning, partOf, Policy Evaluation>
+<Policy Simulation Models, connectedTo, Data Visualization for Policy>
+<Policy Simulation Models, connectedTo, Policy Learning>
+<Program Design, connectedTo, Communication Strategy>
+<Program Design, partOf, Policy Evaluation>
+<Report Drafting, connectedTo, Implementation Plan Development>
+<Report Drafting, connectedTo, Interagency Coordination>
+<Report Drafting, connectedTo, Policy Brief Writing>
+<Report Drafting, connectedTo, Policy Simulation Models>
diff --git a/train/mermaid/hard/mermaid_759.txt b/train/mermaid/hard/mermaid_759.txt
new file mode 100644
index 0000000000000000000000000000000000000000..04445062a43518a7691d372ae74a75106625dc0a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_759.txt
@@ -0,0 +1,33 @@
+<Comparative Policy Analysis, connectedTo, Impact Assessment>
+<Comparative Policy Analysis, connectedTo, Recommendation Formulation>
+<Comparative Policy Analysis, connectedTo, Stakeholder Analysis>
+<Criteria Establishment, connectedTo, Policy Advocacy and Lobbying>
+<Criteria Establishment, connectedTo, Quantitative Analysis>
+<Ethical Considerations, connectedTo, Implementation Plan Development>
+<Ethical Considerations, connectedTo, Stakeholder Analysis>
+<Implementation Plan Development, connectedTo, Public Opinion Research>
+<Implementation Plan Development, connectedTo, Regulatory Impact Assessment>
+<Policy Advocacy and Lobbying, connectedTo, Comparative Policy Analysis>
+<Policy Learning, connectedTo, Presentation Skills>
+<Policy Learning, partOf, Feasibility Study>
+<Presentation Skills, connectedTo, Comparative Policy Analysis>
+<Presentation Skills, partOf, Feasibility Study>
+<Program Design, connectedTo, Qualitative Analysis>
+<Public Consultation Process, connectedTo, Ethical Considerations>
+<Public Consultation Process, partOf, Interagency Coordination>
+<Public Opinion Research, connectedTo, Criteria Establishment>
+<Public Opinion Research, connectedTo, Impact Assessment>
+<Public Opinion Research, connectedTo, Policy Advocacy and Lobbying>
+<Public Opinion Research, connectedTo, Program Design>
+<Public Opinion Research, connectedTo, Recommendation Formulation>
+<Public Opinion Research, connectedTo, Stakeholder Analysis>
+<Qualitative Analysis, yes, Criteria Establishment>
+<Quantitative Analysis, connectedTo, Report Drafting>
+<Quantitative Analysis, partOf, Feasibility Study>
+<Recommendation Formulation, connectedTo, Stakeholder Analysis>
+<Regulatory Impact Assessment, connectedTo, Public Consultation Process>
+<Regulatory Impact Assessment, partOf, Interagency Coordination>
+<Report Drafting, connectedTo, Policy Learning>
+<Report Drafting, partOf, Feasibility Study>
+<Stakeholder Analysis, connectedTo, Impact Assessment>
+<start, connectedTo, Ethical Considerations>
diff --git a/train/mermaid/hard/mermaid_761.mmd b/train/mermaid/hard/mermaid_761.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..79c0d3b2d611d4dd2d5430c148561c1a3c33673c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_761.mmd
@@ -0,0 +1,108 @@
+graph RL
+    N0([Bias Mitigation])
+    N1(Open Science Practices)
+    N2[Literature Review]
+    N3(Funding Agency Reporting)
+    N4{Journal Publication}
+    N5(Variable Identification)
+    N6[(Data Analysis)]
+    N7([Model Building])
+    N8[[Research Design]]
+    N9{Poster Session Preparation}
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Thesis or Dissertation Writing
+        nest0_0[/Theory Development/]
+        nest0_1(Data Management Plan)
+        nest0_2[[Public Engagement with Research]]
+        nest0_3[(Research Ethics Application)]
+    end
+    subgraph Reproducibility Studies
+        nest1_0(Citation Management)
+        nest1_1[[Intellectual Property in Research]]
+        nest1_2[/Statistical Analysis/]
+        nest1_3(Systematic Review)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N6 --> nest0_0
+    nest0_3 --> N6
+    nest1_0 -.-> |peer review| nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N8 -.-> nest1_0
+    nest1_3 -.-> N3
+    N4 --> S0
+    S0 -.-> N6
+    S0 --> N9
+    S0 -.-> N8
+    N0 -.-> S1
+    S1 -.-> N9
+    S1 -.-> N3
+    S1 -.-> N8
+    N2 --> M1
+    N0 -.-> M1
+    M1 --> N4
+    style N0 fill:#F8BBD0,stroke:#E91E63
+    style N1 fill:#F8BBD0,stroke:#E91E63
+    style N2 fill:#E0F2F1,stroke:#4DB6AC
+    style N3 fill:#F8BBD0,stroke:#E91E63
+    style N4 fill:#F8BBD0,stroke:#E91E63
+    style N5 fill:#E0F2F1,stroke:#4DB6AC
+    style N6 fill:#F8BBD0,stroke:#E91E63
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style N8 fill:#DACBE3,stroke:#A188D0
+    style N9 fill:#E0F2F1,stroke:#4DB6AC
+    style S0 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style M1 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_0 fill:#DACBE3,stroke:#A188D0
+    style nest0_1 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_2 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_3 fill:#E0F2F1,stroke:#4DB6AC
+    style nest1_0 fill:#F8BBD0,stroke:#E91E63
+    style nest1_1 fill:#F8BBD0,stroke:#E91E63
+    style nest1_2 fill:#F8BBD0,stroke:#E91E63
+    style nest1_3 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
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+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E91E63,stroke-width:2px,fill:none;
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+    linkStyle 16 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 28 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_762.txt b/train/mermaid/hard/mermaid_762.txt
new file mode 100644
index 0000000000000000000000000000000000000000..143d611c132d1506e148a0ed73b290440e96cfdb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_762.txt
@@ -0,0 +1,41 @@
+<Bias Mitigation, connectedTo, Manuscript Writing>
+<Bias Mitigation, connectedTo, Research Impact Assessment>
+<Citation Management, connectedTo, Meta_Analysis>
+<Citation Management, partOf, Research Design>
+<Data Collection, connectedTo, Systematic Review>
+<Data Visualization for Research, connectedTo, Citation Management>
+<Data Visualization for Research, partOf, Research Design>
+<Funding Agency Reporting, connectedTo, Reproducibility Studies>
+<Funding Agency Reporting, connectedTo, Statistical Analysis>
+<Grant Proposal Writing, connectedTo, Plagiarism Detection>
+<Intellectual Property in Research, connectedTo, Funding Agency Reporting>
+<Intellectual Property in Research, connectedTo, Poster Session Preparation>
+<Journal Publication, connectedTo, Public Engagement with Research>
+<Journal Publication, partOf, Open Science Practices>
+<Manuscript Writing, connectedTo, Public Engagement with Research>
+<Meta_Analysis, connectedTo, Survey Design>
+<Meta_Analysis, partOf, Research Design>
+<Model Building, connectedTo, Intellectual Property in Research>
+<Model Building, connectedTo, Poster Session Preparation>
+<Peer Review Process, connectedTo, Data Collection>
+<Plagiarism Detection, connectedTo, Thesis or Dissertation Writing>
+<Poster Session Preparation, connectedTo, Grant Proposal Writing>
+<Public Engagement with Research, connectedTo, Peer Review Process>
+<Reproducibility Studies, connectedTo, Journal Publication>
+<Reproducibility Studies, partOf, Open Science Practices>
+<Research Ethics Application, connectedTo, Grant Proposal Writing>
+<Research Ethics Application, connectedTo, Manuscript Writing>
+<Research Ethics Application, open science, Research Question Refinement>
+<Research Ethics Application, replicates, Peer Review Process>
+<Research Impact Assessment, connectedTo, Manuscript Writing>
+<Research Question Refinement, connectedTo, Journal Publication>
+<Research Question Refinement, connectedTo, Model Building>
+<Software for Statistical Analysis, connectedTo, Sampling Techniques>
+<Statistical Analysis, connectedTo, Manuscript Writing>
+<Statistical Analysis, connectedTo, Poster Session Preparation>
+<Survey Design, connectedTo, Research Impact Assessment>
+<Survey Design, partOf, Research Design>
+<Systematic Review, connectedTo, Theory Development>
+<Theory Development, connectedTo, Software for Statistical Analysis>
+<Thesis or Dissertation Writing, connectedTo, Bias Mitigation>
+<Thesis or Dissertation Writing, connectedTo, Data Visualization for Research>
diff --git a/train/mermaid/hard/mermaid_763.mmd b/train/mermaid/hard/mermaid_763.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9863d95aaa67b6a1866411d85adcd9cf4a9bb2c0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_763.mmd
@@ -0,0 +1,146 @@
+graph TD
+    N0([Peer Review Process])
+    N1[[Data Management Plan]]
+    N2[/Model Building/]
+    N3[/Data Visualization for Research/]
+    N4(Software for Statistical Analysis)
+    N5[Qualitative Analysis]
+    N6(Variable Identification)
+    N7[Academic Mentorship]
+    N8(Research Ethics Application)
+    N9[Research Question Refinement]
+    N10[/Systematic Review/]
+    N11(Research Impact Assessment)
+    N12{Power Analysis}
+    N13([Experiment Design])
+    N14{Sampling Techniques}
+    N15(Literature Review)
+    N16(Data Collection)
+    N17[/Theory Development/]
+    N18[(Public Engagement with Research)]
+    N19(Citation Management)
+    N20([Hypothesis Formulation])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Journal Publication
+        nest0_0[/Thesis or Dissertation Writing/]
+        nest0_1{Statistical Analysis}
+    end
+    subgraph Survey Design
+        nest1_0{Intellectual Property in Research}
+        nest1_1[Plagiarism Detection]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> |grants| N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 -.-> N17
+    N17 --> |disseminates| N18
+    N18 -.-> |investigates| N19
+    N19 --> N20
+    nest0_0 --> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 -.-> N5
+    nest1_0 -.-> nest1_1
+    N15 --> nest1_0
+    nest1_1 --> N6
+    N10 --> S0
+    S0 --> N18
+    S0 -.-> N20
+    S0 --> N14
+    N2 -.-> S1
+    S1 -.-> N8
+    S1 -.-> N11
+    S1 --> N6
+    N4 -.-> M0
+    N2 --> M0
+    N8 -.-> |applies| M0
+    M0 --> N11
+    N3 --> M1
+    N6 -.-> M1
+    M1 --> N11
+    style N0 fill:#E8F0EA,stroke:#92C79A
+    style N1 fill:#C9F0F0,stroke:#4DD0E1
+    style N2 fill:#E1BEE7,stroke:#9C27B0
+    style N3 fill:#E1BEE7,stroke:#9C27B0
+    style N4 fill:#E1BEE7,stroke:#9C27B0
+    style N5 fill:#C9F0F0,stroke:#4DD0E1
+    style N6 fill:#E1BEE7,stroke:#9C27B0
+    style N7 fill:#E8F0EA,stroke:#92C79A
+    style N8 fill:#E1BEE7,stroke:#9C27B0
+    style N9 fill:#E8F0EA,stroke:#92C79A
+    style N10 fill:#C9F0F0,stroke:#4DD0E1
+    style N11 fill:#C9F0F0,stroke:#4DD0E1
+    style N12 fill:#C9F0F0,stroke:#4DD0E1
+    style N13 fill:#E1BEE7,stroke:#9C27B0
+    style N14 fill:#E8F0EA,stroke:#92C79A
+    style N15 fill:#C9F0F0,stroke:#4DD0E1
+    style N16 fill:#E8F0EA,stroke:#92C79A
+    style N17 fill:#C9F0F0,stroke:#4DD0E1
+    style N18 fill:#C9F0F0,stroke:#4DD0E1
+    style N19 fill:#C9F0F0,stroke:#4DD0E1
+    style N20 fill:#C9F0F0,stroke:#4DD0E1
+    style S0 fill:#C9F0F0,stroke:#4DD0E1
+    style S1 fill:#E8F0EA,stroke:#92C79A
+    style M0 fill:#E8F0EA,stroke:#92C79A
+    style M1 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_0 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_1 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_0 fill:#C9F0F0,stroke:#4DD0E1
+    style nest1_1 fill:#E8F0EA,stroke:#92C79A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DD0E1,stroke-width:2px,fill:none;
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+    linkStyle 3 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4DD0E1,stroke-width:2px,fill:none;
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+    linkStyle 12 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4DD0E1,stroke-width:2px,fill:none;
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+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#92C79A,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#4DD0E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_765.mmd b/train/mermaid/hard/mermaid_765.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6e563ea14772849ee5bf8e1ada399341ff1b6f3f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_765.mmd
@@ -0,0 +1,113 @@
+graph TD
+    N0([start])
+    N1(Hypothesis Formulation)
+    N2([Presentation at Conferences])
+    N3(Bias Mitigation)
+    N4[Research Impact Assessment]
+    N5(Journal Publication)
+    N6(Methodology Selection)
+    N7[[Manuscript Writing]]
+    N8(Reproducibility Studies)
+    N9[Data Management Plan]
+    N10[/Open Science Practices/]
+    N11[(Citation Management)]
+    N12(Research Ethics Application)
+    N13(Model Building)
+    N14[Variable Identification]
+    N15[(Software for Statistical Analysis)]
+    N16[/Systematic Review/]
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Research Question Refinement
+        nest0_0[[Meta_Analysis]]
+        nest0_1[/Data Visualization for Research/]
+        nest0_2(Data Analysis)
+    end
+    subgraph Survey Design
+        nest1_0[[Research Design]]
+        nest1_1[Thesis or Dissertation Writing]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> |yes| N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 --> N17
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 -.-> N5
+    nest1_0 --> nest1_1
+    N2 --> nest1_0
+    nest1_1 --> |yes| N13
+    N4 -.-> S0
+    S0 --> N6
+    S0 -.-> N7
+    S0 --> N12
+    N14 -.-> S1
+    S1 --> N17
+    S1 --> N16
+    N5 --> M0
+    N3 -.-> M0
+    M0 -.-> N8
+    N3 --> |no| M2
+    N0 --> M2
+    N7 --> M2
+    M2 -.-> N12
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style M0 fill:#E6EE9C,stroke:#CDDC39
+    style M2 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#3F51B5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#CDDC39,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_765.txt b/train/mermaid/hard/mermaid_765.txt
new file mode 100644
index 0000000000000000000000000000000000000000..eb0a02ec3c85439aecea3dab37714b6fd0b00845
--- /dev/null
+++ b/train/mermaid/hard/mermaid_765.txt
@@ -0,0 +1,39 @@
+<Bias Mitigation, connectedTo, Reproducibility Studies>
+<Bias Mitigation, connectedTo, Research Impact Assessment>
+<Bias Mitigation, no, Research Ethics Application>
+<Citation Management, connectedTo, Research Ethics Application>
+<Data Analysis, connectedTo, Journal Publication>
+<Data Analysis, partOf, Research Question Refinement>
+<Data Management Plan, connectedTo, Open Science Practices>
+<Data Visualization for Research, connectedTo, Data Analysis>
+<Data Visualization for Research, partOf, Research Question Refinement>
+<Hypothesis Formulation, connectedTo, Presentation at Conferences>
+<Journal Publication, connectedTo, Methodology Selection>
+<Journal Publication, connectedTo, Reproducibility Studies>
+<Manuscript Writing, connectedTo, Reproducibility Studies>
+<Manuscript Writing, connectedTo, Research Ethics Application>
+<Meta_Analysis, connectedTo, Data Visualization for Research>
+<Meta_Analysis, partOf, Research Question Refinement>
+<Methodology Selection, yes, Manuscript Writing>
+<Model Building, connectedTo, Variable Identification>
+<Open Science Practices, connectedTo, Citation Management>
+<Presentation at Conferences, connectedTo, Bias Mitigation>
+<Presentation at Conferences, connectedTo, Research Design>
+<Reproducibility Studies, connectedTo, Data Management Plan>
+<Research Design, connectedTo, Thesis or Dissertation Writing>
+<Research Design, partOf, Survey Design>
+<Research Ethics Application, connectedTo, Model Building>
+<Research Impact Assessment, connectedTo, Journal Publication>
+<Research Impact Assessment, connectedTo, Manuscript Writing>
+<Research Impact Assessment, connectedTo, Meta_Analysis>
+<Research Impact Assessment, connectedTo, Methodology Selection>
+<Research Impact Assessment, connectedTo, Research Ethics Application>
+<Software for Statistical Analysis, connectedTo, Systematic Review>
+<Systematic Review, connectedTo, end>
+<Thesis or Dissertation Writing, partOf, Survey Design>
+<Thesis or Dissertation Writing, yes, Model Building>
+<Variable Identification, connectedTo, Software for Statistical Analysis>
+<Variable Identification, connectedTo, Systematic Review>
+<Variable Identification, connectedTo, end>
+<start, connectedTo, Hypothesis Formulation>
+<start, connectedTo, Research Ethics Application>
diff --git a/train/mermaid/hard/mermaid_767.mmd b/train/mermaid/hard/mermaid_767.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..932c2f2558e5dc97110ddbd122f771cfb1211cc2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_767.mmd
@@ -0,0 +1,118 @@
+graph TD
+    N0([start])
+    N1[Software for Statistical Analysis]
+    N2[Poster Session Preparation]
+    N3[[Manuscript Writing]]
+    N4[(Bias Mitigation)]
+    N5[Sampling Techniques]
+    N6[Presentation at Conferences]
+    N7[(Peer Review Process)]
+    N8{Hypothesis Formulation}
+    N9([Survey Design])
+    N10[[Experiment Design]]
+    N11{Thesis or Dissertation Writing}
+    N12[/Journal Publication/]
+    N13[/Research Question Refinement/]
+    N14[Intellectual Property in Research]
+    N15([Academic Mentorship])
+    N16[(Citation Management)]
+    N17([Variable Identification])
+    N18[Reproducibility Studies]
+    N19([end])
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Open Science Practices
+        nest0_0{Plagiarism Detection}
+        nest0_1(Meta_Analysis)
+    end
+    subgraph Data Analysis
+        nest1_0([Systematic Review])
+        nest1_1(Funding Agency Reporting)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |yes| N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 --> N17
+    N17 -.-> N18
+    N18 -.-> N19
+    nest0_0 -.-> nest0_1
+    N18 --> nest0_0
+    nest0_1 -.-> N6
+    nest1_0 --> nest1_1
+    N16 -.-> nest1_0
+    nest1_1 --> N17
+    N3 -.-> S0
+    S0 --> N19
+    S0 -.-> N13
+    N13 -.-> S2
+    S2 --> N16
+    S2 -.-> N19
+    S2 -.-> |yes| N17
+    N2 --> M0
+    N6 -.-> M0
+    N0 --> M0
+    M0 --> N17
+    N1 -.-> M1
+    N3 -.-> M1
+    N2 -.-> M1
+    M1 -.-> N5
+    style S0 fill:#FFF8E1,stroke:#FFD54F
+    style S2 fill:#FFF9C4,stroke:#FFEB3B
+    style M0 fill:#EDF5F3,stroke:#A1D7CD
+    style M1 fill:#FFF8E1,stroke:#FFD54F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A1D7CD,stroke-width:2px,fill:none;
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+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_769.mmd b/train/mermaid/hard/mermaid_769.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5db9cff66436795cb5d023f82df363062ff04620
--- /dev/null
+++ b/train/mermaid/hard/mermaid_769.mmd
@@ -0,0 +1,124 @@
+graph BT
+    N0([start])
+    N1[(Online Public Access Catalog)]
+    N2[/Reference Desk Support/]
+    N3[System Upgrades]
+    N4([Library Management Systems])
+    N5[[Library Website Management]]
+    N6(Digital Resource Management)
+    N7[/Technical Support for Systems/]
+    N8(Reporting and Analytics)
+    N9[/Resource Sharing Networks/]
+    N10{Electronic Resource Management}
+    N11{Metadata Creation}
+    N12([Database Management])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph RFID System Implementation
+        nest0_0[System Security]
+        nest0_1[[Authority Control]]
+        nest0_2(Subject Indexing)
+        nest0_3[/Acquisitions/]
+    end
+    subgraph Open Access Repository Management
+        nest1_0[Linked Data for Libraries]
+        nest1_1(Circulation Management)
+        nest1_2[/Federated Search/]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> |catalogs| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N10 --> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 -.-> |reports| nest1_1
+    nest1_1 --> nest1_2
+    N4 --> nest1_0
+    nest1_2 --> N1
+    N7 -.-> S0
+    S0 -.-> N12
+    S0 -.-> N9
+    N1 -.-> S1
+    S1 -.-> N4
+    S1 -.-> N10
+    N2 -.-> M0
+    N1 --> M0
+    N0 --> M0
+    M0 -.-> N4
+    N2 -.-> |digitizes| M1
+    N9 --> M1
+    N6 --> M1
+    M1 -.-> N12
+    style N0 fill:#FFEBEB,stroke:#FFC2C2
+    style N1 fill:#DFE7EB,stroke:#B0C5CD
+    style N2 fill:#FFEBEB,stroke:#FFC2C2
+    style N3 fill:#C9EFEC,stroke:#6FE1D5
+    style N4 fill:#C9EFEC,stroke:#6FE1D5
+    style N5 fill:#DFE7EB,stroke:#B0C5CD
+    style N6 fill:#FFEBEB,stroke:#FFC2C2
+    style N7 fill:#FFEBEB,stroke:#FFC2C2
+    style N8 fill:#DFE7EB,stroke:#B0C5CD
+    style N9 fill:#FFEBEB,stroke:#FFC2C2
+    style N10 fill:#FFEBEB,stroke:#FFC2C2
+    style N11 fill:#C9EFEC,stroke:#6FE1D5
+    style N12 fill:#C9EFEC,stroke:#6FE1D5
+    style S0 fill:#C9EFEC,stroke:#6FE1D5
+    style S1 fill:#C9EFEC,stroke:#6FE1D5
+    style M0 fill:#DFE7EB,stroke:#B0C5CD
+    style M1 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_0 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_1 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_2 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_3 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_0 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_1 fill:#DFE7EB,stroke:#B0C5CD
+    style nest1_2 fill:#C9EFEC,stroke:#6FE1D5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_770.txt b/train/mermaid/hard/mermaid_770.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9bcfbeaac8586bc3b9b4fb49ce3bcd221a5e7ee4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_770.txt
@@ -0,0 +1,49 @@
+<Archival Integration, connectedTo, Discovery Layers>
+<Archival Integration, connectedTo, RFID System Implementation>
+<Automated Materials Handling, connectedTo, Federated Search>
+<Automated Materials Handling, partOf, AI in Library Services>
+<Collection Development, borrows, Circulation Management>
+<Collection Development, connectedTo, Federated Search>
+<Collection Development, connectedTo, Mobile App for Library>
+<Database Management, maintains, Open Access Repository Management>
+<Database Management, partOf, Linked Data for Libraries>
+<Discovery Layers, connectedTo, Circulation Management>
+<Federated Search, connectedTo, Archival Integration>
+<Library Management Systems, connectedTo, Circulation Management>
+<Library Management Systems, connectedTo, Federated Search>
+<Library Website Management, connectedTo, Circulation Management>
+<Library Website Management, connectedTo, Collection Development>
+<Library Website Management, connectedTo, Library Management Systems>
+<Mobile App for Library, connectedTo, Federated Search>
+<Mobile App for Library, connectedTo, Library Management Systems>
+<Open Access Repository Management, connectedTo, Federated Search>
+<Open Access Repository Management, partOf, Linked Data for Libraries>
+<Patron Services, connectedTo, Database Management>
+<Patron Services, partOf, Linked Data for Libraries>
+<Personalized Recommendations, connectedTo, Patron Services>
+<Personalized Recommendations, partOf, Linked Data for Libraries>
+<Preservation of Materials, connectedTo, Archival Integration>
+<Preservation of Materials, connectedTo, Circulation Management>
+<Preservation of Materials, connectedTo, Federated Search>
+<Preservation of Materials, connectedTo, Technical Support for Systems>
+<Preservation of Materials, migrates, Library Website Management>
+<RFID System Implementation, connectedTo, Reference Desk Support>
+<RFID System Implementation, partOf, AI in Library Services>
+<Reference Desk Support, partOf, AI in Library Services>
+<Reference Desk Support, preserves, Automated Materials Handling>
+<Resource Sharing Networks, connectedTo, Federated Search>
+<Resource Sharing Networks, connectedTo, Library Management Systems>
+<Resource Sharing Networks, connectedTo, User Account Management>
+<System Upgrades, connectedTo, Library Management Systems>
+<System Upgrades, connectedTo, Library Website Management>
+<System Upgrades, connectedTo, Personalized Recommendations>
+<System Upgrades, processes, Circulation Management>
+<Technical Support for Systems, connectedTo, Circulation Management>
+<Technical Support for Systems, connectedTo, Library Management Systems>
+<Technical Support for Systems, connectedTo, Mobile App for Library>
+<Technical Support for Systems, connectedTo, System Upgrades>
+<User Account Management, assists, Library Management Systems>
+<User Account Management, connectedTo, Archival Integration>
+<User Account Management, connectedTo, Federated Search>
+<User Account Management, connectedTo, Preservation of Materials>
+<User Account Management, connectedTo, System Upgrades>
diff --git a/train/mermaid/hard/mermaid_771.txt b/train/mermaid/hard/mermaid_771.txt
new file mode 100644
index 0000000000000000000000000000000000000000..16b84090ffa0a5c19a0380b447497b254e00998e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_771.txt
@@ -0,0 +1,44 @@
+<Automated Materials Handling, connectedTo, Collection Development>
+<Automated Materials Handling, connectedTo, Reporting and Analytics>
+<Circulation Management, connectedTo, Automated Materials Handling>
+<Collection Development, connectedTo, Online Public Access Catalog>
+<Collection Development, partOf, Technical Support for Systems>
+<Discovery Layers, connectedTo, Library Management Systems>
+<Discovery Layers, connectedTo, Patron Services>
+<Electronic Resource Management, connectedTo, Discovery Layers>
+<Federated Search, connectedTo, Search Functionality>
+<Interlibrary Loan, connectedTo, Metadata Creation>
+<Library Management Systems, connectedTo, User Account Management>
+<Library Management Systems, partOf, Open Access Repository Management>
+<Linked Data for Libraries, connectedTo, Circulation Management>
+<Linked Data for Libraries, connectedTo, User Training on Systems>
+<Metadata Creation, yes, Circulation Management>
+<Mobile App for Library, connectedTo, Interlibrary Loan>
+<Mobile App for Library, connectedTo, User Training on Systems>
+<Mobile App for Library, no, Electronic Resource Management>
+<Mobile App for Library, yes, Federated Search>
+<Online Public Access Catalog, connectedTo, System Security>
+<Online Public Access Catalog, partOf, Technical Support for Systems>
+<Patron Services, connectedTo, Linked Data for Libraries>
+<Personalized Recommendations, connectedTo, end>
+<Reference Desk Support, connectedTo, Personalized Recommendations>
+<Reporting and Analytics, connectedTo, Reference Desk Support>
+<Search Functionality, connectedTo, Automated Materials Handling>
+<Search Functionality, connectedTo, Reference Desk Support>
+<Search Functionality, no, Electronic Resource Management>
+<Self_Checkout Kiosks, connectedTo, Circulation Management>
+<Self_Checkout Kiosks, connectedTo, Patron Services>
+<Self_Checkout Kiosks, connectedTo, Reference Desk Support>
+<Self_Checkout Kiosks, connectedTo, Subject Indexing>
+<Self_Checkout Kiosks, connectedTo, User Training on Systems>
+<Subject Indexing, connectedTo, Circulation Management>
+<Subject Indexing, connectedTo, Mobile App for Library>
+<System Security, connectedTo, Reporting and Analytics>
+<System Security, partOf, Technical Support for Systems>
+<System Upgrades, connectedTo, Electronic Resource Management>
+<System Upgrades, partOf, Open Access Repository Management>
+<User Account Management, connectedTo, System Upgrades>
+<User Account Management, partOf, Open Access Repository Management>
+<User Training on Systems, connectedTo, Circulation Management>
+<User Training on Systems, connectedTo, Interlibrary Loan>
+<start, connectedTo, Self_Checkout Kiosks>
diff --git a/train/mermaid/hard/mermaid_772.mmd b/train/mermaid/hard/mermaid_772.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c5c37805e2c0b0acb8ab0f4a9d338d22ff4ac7f5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_772.mmd
@@ -0,0 +1,114 @@
+graph LR
+    N0([Collection Development])
+    N1(Database Management)
+    N2[System Security]
+    N3{Data Migration}
+    N4(Resource Sharing Networks)
+    N5([Cataloging and Classification])
+    N6(Serials Control)
+    N7[(Circulation Management)]
+    N8[RFID System Implementation]
+    N9{Subject Indexing}
+    N10([Electronic Resource Management])
+    N11[Library Management Systems]
+    N12[Search Functionality]
+    N13([System Upgrades])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Federated Search
+        nest0_0[Automated Materials Handling]
+        nest0_1[Patron Services]
+        nest0_2(Personalized Recommendations)
+        nest0_3{Integrated Library Systems}
+    end
+    subgraph Online Public Access Catalog
+        nest1_0[(Mobile App for Library)]
+        nest1_1([Interlibrary Loan])
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 --> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N1 --> nest0_0
+    nest0_3 --> N10
+    nest1_0 --> |lends| nest1_1
+    N3 --> nest1_0
+    nest1_1 -.-> N9
+    N3 --> S0
+    S0 -.-> N6
+    S0 --> |searches| N11
+    S0 -.-> N9
+    N9 --> S1
+    S1 -.-> N12
+    S1 -.-> N13
+    N7 --> M0
+    N1 -.-> M0
+    M0 -.-> N11
+    style N0 fill:#F5F5F5,stroke:#BDBDBD
+    style N1 fill:#FAEBF3,stroke:#F7BEE0
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#ECCFF5,stroke:#CD8FF2
+    style N4 fill:#ECCFF5,stroke:#CD8FF2
+    style N5 fill:#F5F5F5,stroke:#BDBDBD
+    style N6 fill:#FAEBF3,stroke:#F7BEE0
+    style N7 fill:#FAEBF3,stroke:#F7BEE0
+    style N8 fill:#ECCFF5,stroke:#CD8FF2
+    style N9 fill:#FAEBF3,stroke:#F7BEE0
+    style N10 fill:#ECCFF5,stroke:#CD8FF2
+    style N11 fill:#ECCFF5,stroke:#CD8FF2
+    style N12 fill:#ECCFF5,stroke:#CD8FF2
+    style N13 fill:#ECCFF5,stroke:#CD8FF2
+    style S0 fill:#FAEBF3,stroke:#F7BEE0
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style M0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest0_1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_2 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_3 fill:#ECCFF5,stroke:#CD8FF2
+    style nest1_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_1 fill:#ECCFF5,stroke:#CD8FF2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#F7BEE0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_775.mmd b/train/mermaid/hard/mermaid_775.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5f4ef0ed40541a206f709d10ed4404cddb9464ee
--- /dev/null
+++ b/train/mermaid/hard/mermaid_775.mmd
@@ -0,0 +1,150 @@
+graph TD
+    N0([Mobile App for Library])
+    N1[/Online Public Access Catalog/]
+    N2(Cataloging and Classification)
+    N3{Library Management Systems}
+    N4[(Technical Support for Systems)]
+    N5([Authority Control])
+    N6[Search Functionality]
+    N7[Preservation of Materials]
+    N8[System Upgrades]
+    N9[Self_Checkout Kiosks]
+    N10[[Resource Sharing Networks]]
+    N11(Linked Data for Libraries)
+    N12[RFID System Implementation]
+    N13[Integrated Library Systems]
+    N14([Data Migration])
+    N15([Interlibrary Loan])
+    N16[[System Security]]
+    N17([Reference Desk Support])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Reporting and Analytics
+        nest0_0[User Account Management]
+        nest0_1[[Automated Materials Handling]]
+        nest0_2[[Subject Indexing]]
+    end
+    subgraph Archival Integration
+        nest1_0(Acquisitions)
+        nest1_1[/Collection Development/]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> |implements| N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> |trains| N7
+    N7 -.-> N8
+    N8 -.-> |digitizes| N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> |collaborates| N12
+    N12 --> |archives| N13
+    N13 -.-> |processes| N14
+    N14 -.-> N15
+    N15 -.-> N16
+    N16 --> N17
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N3 -.-> nest0_0
+    nest0_2 --> N4
+    nest1_0 -.-> nest1_1
+    N5 -.-> |preserves| nest1_0
+    nest1_1 -.-> N7
+    N2 --> S0
+    S0 -.-> N5
+    S0 --> N7
+    S0 --> N15
+    N0 -.-> S1
+    S1 --> N7
+    S1 -.-> N16
+    S1 --> N9
+    N0 --> S2
+    S2 -.-> N15
+    S2 --> N9
+    S2 --> N8
+    S2 --> N12
+    N12 --> M0
+    N5 --> M0
+    N9 -.-> M0
+    M0 --> N17
+    N1 --> M1
+    N0 -.-> M1
+    M1 -.-> N3
+    style N0 fill:#FCFCE7,stroke:#DCE775
+    style N1 fill:#FBE9E7,stroke:#FF8A65
+    style N2 fill:#FBE9E7,stroke:#FF8A65
+    style N3 fill:#FFFDE7,stroke:#FFF176
+    style N4 fill:#FCFCE7,stroke:#DCE775
+    style N5 fill:#FFFDE7,stroke:#FFF176
+    style N6 fill:#FCFCE7,stroke:#DCE775
+    style N7 fill:#FFFDE7,stroke:#FFF176
+    style N8 fill:#FCFCE7,stroke:#DCE775
+    style N9 fill:#FFFDE7,stroke:#FFF176
+    style N10 fill:#FBE9E7,stroke:#FF8A65
+    style N11 fill:#FFFDE7,stroke:#FFF176
+    style N12 fill:#FBE9E7,stroke:#FF8A65
+    style N13 fill:#FFFDE7,stroke:#FFF176
+    style N14 fill:#FCFCE7,stroke:#DCE775
+    style N15 fill:#FFFDE7,stroke:#FFF176
+    style N16 fill:#FCFCE7,stroke:#DCE775
+    style N17 fill:#FBE9E7,stroke:#FF8A65
+    style S0 fill:#FFFDE7,stroke:#FFF176
+    style S1 fill:#FCFCE7,stroke:#DCE775
+    style S2 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#FFFDE7,stroke:#FFF176
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_0 fill:#FCFCE7,stroke:#DCE775
+    style nest0_1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_2 fill:#FFFDE7,stroke:#FFF176
+    style nest1_0 fill:#FCFCE7,stroke:#DCE775
+    style nest1_1 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_776.mmd b/train/mermaid/hard/mermaid_776.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..e00d0a035fd40eb22e4fc26ade387f899bc13bb0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_776.mmd
@@ -0,0 +1,132 @@
+graph BT
+    N0([Reference Desk Support])
+    N1[Serials Control]
+    N2[[RFID System Implementation]]
+    N3[/AI in Library Services/]
+    N4(Data Migration)
+    N5([Online Public Access Catalog])
+    N6[[Collection Development]]
+    N7([Federated Search])
+    N8(Acquisitions)
+    N9[(Personalized Recommendations)]
+    N10[Mobile App for Library]
+    N11[User Training on Systems]
+    N12[Linked Data for Libraries]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Discovery Layers
+        nest0_0[Search Functionality]
+        nest0_1([Circulation Management])
+    end
+    subgraph Authority Control
+        nest1_0(System Security)
+        nest1_1(Technical Support for Systems)
+        nest1_2(Electronic Resource Management)
+        nest1_3[Resource Sharing Networks]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 --> N12
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 -.-> nest1_0
+    nest1_3 -.-> N7
+    N0 -.-> S0
+    S0 --> N3
+    S0 --> |assists| N9
+    N4 -.-> S1
+    S1 --> |collaborates| N7
+    S1 -.-> N12
+    S1 --> N9
+    N9 --> S2
+    S2 -.-> N12
+    S2 --> N11
+    N3 -.-> M0
+    N5 -.-> M0
+    N1 --> M0
+    M0 -.-> N9
+    N1 --> M1
+    N6 -.-> M1
+    N0 -.-> M1
+    N2 -.-> |circulates| M1
+    M1 -.-> N9
+    style N0 fill:#E8F5E9,stroke:#66BB6A
+    style N1 fill:#F6F6F6,stroke:#CFCFCF
+    style N2 fill:#F6F6F6,stroke:#CFCFCF
+    style N3 fill:#F6F6F6,stroke:#CFCFCF
+    style N4 fill:#F6F6F6,stroke:#CFCFCF
+    style N5 fill:#D7CCC8,stroke:#795548
+    style N6 fill:#F6F6F6,stroke:#CFCFCF
+    style N7 fill:#F6F6F6,stroke:#CFCFCF
+    style N8 fill:#D7CCC8,stroke:#795548
+    style N9 fill:#E8F5E9,stroke:#66BB6A
+    style N10 fill:#D7CCC8,stroke:#795548
+    style N11 fill:#F6F6F6,stroke:#CFCFCF
+    style N12 fill:#D7CCC8,stroke:#795548
+    style S0 fill:#E8F5E9,stroke:#66BB6A
+    style S1 fill:#F6F6F6,stroke:#CFCFCF
+    style S2 fill:#D7CCC8,stroke:#795548
+    style M0 fill:#D7CCC8,stroke:#795548
+    style M1 fill:#D7CCC8,stroke:#795548
+    style nest0_0 fill:#E8F5E9,stroke:#66BB6A
+    style nest0_1 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_0 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_1 fill:#E8F5E9,stroke:#66BB6A
+    style nest1_2 fill:#F6F6F6,stroke:#CFCFCF
+    style nest1_3 fill:#E8F5E9,stroke:#66BB6A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_777.mmd b/train/mermaid/hard/mermaid_777.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..baedad1325a104c300d0d05cc11c6e351636fdf0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_777.mmd
@@ -0,0 +1,124 @@
+graph BT
+    N0([start])
+    N1(Collection Management Policy)
+    N2(Digital Forensics for Archives)
+    N3[Authority Control for Archival Names]
+    N4[Database Management]
+    N5(Environmental Control)
+    N6([Records Retention Scheduling])
+    N7{Community Archiving Projects}
+    N8[(Security of Holdings)]
+    N9(Records Transfer Processes)
+    N10[(Metadata Creation)]
+    N11[Provenance Tracking]
+    N12(Data Migration for Digital Archives)
+    N13([Outreach and Education])
+    N14[Appraisal and Selection]
+    N15[/Preservation Planning/]
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Public Access Systems
+        nest0_0([Digital Asset Management])
+        nest0_1[[User Interface for Digital Archives]]
+        nest0_2(Arrangement and Description)
+    end
+    subgraph Exhibition Curation
+        nest1_0[Emulation for Obsolete Formats]
+        nest1_1(Access and Reference Services)
+    end
+    N0 -.-> N1
+    N1 -.-> |yes| N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> |yes| N12
+    N12 --> |yes| N13
+    N13 -.-> N14
+    N14 -.-> |yes| N15
+    N15 -.-> N16
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 -.-> N6
+    nest1_0 -.-> nest1_1
+    N15 --> nest1_0
+    nest1_1 -.-> N14
+    N12 --> S0
+    S0 --> N16
+    S0 -.-> N14
+    N2 -.-> S1
+    S1 -.-> |no| N10
+    S1 --> N13
+    S1 --> N8
+    N4 -.-> S2
+    S2 --> N13
+    S2 -.-> N7
+    N0 --> M0
+    N4 --> M0
+    M0 -.-> N7
+    N0 --> M1
+    N1 -.-> M1
+    M1 -.-> N3
+    N6 --> M2
+    N2 --> M2
+    M2 -.-> N11
+    style S0 fill:#C8EDFF,stroke:#82DAFF
+    style S1 fill:#C8EDFF,stroke:#82DAFF
+    style S2 fill:#D7CCC8,stroke:#795548
+    style M0 fill:#ECEFF1,stroke:#90A4AE
+    style M1 fill:#ECEFF1,stroke:#90A4AE
+    style M2 fill:#C8EDFF,stroke:#82DAFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#90A4AE,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_777.txt b/train/mermaid/hard/mermaid_777.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b5cda8afbf619dc4e0a22da1d505a89c65340685
--- /dev/null
+++ b/train/mermaid/hard/mermaid_777.txt
@@ -0,0 +1,40 @@
+<Access and Reference Services, connectedTo, Appraisal and Selection>
+<Access and Reference Services, partOf, Exhibition Curation>
+<Appraisal and Selection, yes, Preservation Planning>
+<Arrangement and Description, connectedTo, Records Retention Scheduling>
+<Arrangement and Description, partOf, Public Access Systems>
+<Authority Control for Archival Names, connectedTo, Database Management>
+<Collection Management Policy, connectedTo, Authority Control for Archival Names>
+<Collection Management Policy, yes, Digital Forensics for Archives>
+<Community Archiving Projects, connectedTo, Security of Holdings>
+<Data Migration for Digital Archives, connectedTo, Appraisal and Selection>
+<Data Migration for Digital Archives, connectedTo, end>
+<Data Migration for Digital Archives, yes, Outreach and Education>
+<Database Management, connectedTo, Community Archiving Projects>
+<Database Management, connectedTo, Digital Asset Management>
+<Database Management, connectedTo, Environmental Control>
+<Database Management, connectedTo, Outreach and Education>
+<Digital Asset Management, connectedTo, User Interface for Digital Archives>
+<Digital Asset Management, partOf, Public Access Systems>
+<Digital Forensics for Archives, connectedTo, Authority Control for Archival Names>
+<Digital Forensics for Archives, connectedTo, Outreach and Education>
+<Digital Forensics for Archives, connectedTo, Provenance Tracking>
+<Digital Forensics for Archives, connectedTo, Security of Holdings>
+<Digital Forensics for Archives, no, Metadata Creation>
+<Emulation for Obsolete Formats, connectedTo, Access and Reference Services>
+<Emulation for Obsolete Formats, partOf, Exhibition Curation>
+<Environmental Control, connectedTo, Records Retention Scheduling>
+<Metadata Creation, connectedTo, Provenance Tracking>
+<Outreach and Education, connectedTo, Appraisal and Selection>
+<Preservation Planning, connectedTo, Emulation for Obsolete Formats>
+<Preservation Planning, connectedTo, end>
+<Provenance Tracking, yes, Data Migration for Digital Archives>
+<Records Retention Scheduling, connectedTo, Community Archiving Projects>
+<Records Retention Scheduling, connectedTo, Provenance Tracking>
+<Records Transfer Processes, connectedTo, Metadata Creation>
+<Security of Holdings, connectedTo, Records Transfer Processes>
+<User Interface for Digital Archives, connectedTo, Arrangement and Description>
+<User Interface for Digital Archives, partOf, Public Access Systems>
+<start, connectedTo, Authority Control for Archival Names>
+<start, connectedTo, Collection Management Policy>
+<start, connectedTo, Community Archiving Projects>
diff --git a/train/mermaid/hard/mermaid_779.mmd b/train/mermaid/hard/mermaid_779.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a37b2caa78c9657240bbd62f86476cc99a74f6f4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_779.mmd
@@ -0,0 +1,96 @@
+graph RL
+    N0([start])
+    N1(Outreach and Education)
+    N2[Finding Aid Creation]
+    N3[Grant Writing for Archives]
+    N4{Database Management}
+    N5([Disaster Preparedness for Archives])
+    N6[Authority Control for Archival Names]
+    N7(Access and Reference Services)
+    N8[Data Migration for Digital Archives]
+    N9([Environmental Control])
+    N10(Researchers Support)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Conservation Treatment
+        nest0_0(Long_Term Digital Preservation)
+        nest0_1(Records Transfer Processes)
+        nest0_2[(Records Retention Scheduling)]
+    end
+    subgraph Oral History Collection
+        nest1_0[/Acquisition and Accessioning/]
+        nest1_1[[Subject Indexing for Archives]]
+        nest1_2(Metadata Creation)
+        nest1_3([Public Access Systems])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> |no| N8
+    N8 --> N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N6 -.-> nest0_0
+    nest0_2 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N2 -.-> nest1_0
+    nest1_3 --> N5
+    N1 --> S0
+    S0 --> N10
+    S0 -.-> N6
+    S0 --> N3
+    N4 -.-> S1
+    S1 --> N7
+    S1 --> N6
+    N4 --> |yes| M0
+    N2 --> M0
+    M0 --> N6
+    N3 -.-> M1
+    N2 --> M1
+    M1 --> N5
+    style S0 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#F1F8E9,stroke:#388E3C
+    style M0 fill:#EFE6FF,stroke:#C2B2F0
+    style M1 fill:#F1F8E9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#388E3C,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_779.txt b/train/mermaid/hard/mermaid_779.txt
new file mode 100644
index 0000000000000000000000000000000000000000..856371917cab07689a8b20ebba08ebb1fd92e870
--- /dev/null
+++ b/train/mermaid/hard/mermaid_779.txt
@@ -0,0 +1,35 @@
+<Access and Reference Services, no, Data Migration for Digital Archives>
+<Acquisition and Accessioning, connectedTo, Subject Indexing for Archives>
+<Acquisition and Accessioning, partOf, Oral History Collection>
+<Authority Control for Archival Names, connectedTo, Access and Reference Services>
+<Authority Control for Archival Names, connectedTo, Long_Term Digital Preservation>
+<Data Migration for Digital Archives, connectedTo, Environmental Control>
+<Database Management, connectedTo, Access and Reference Services>
+<Database Management, connectedTo, Authority Control for Archival Names>
+<Database Management, connectedTo, Disaster Preparedness for Archives>
+<Database Management, yes, Authority Control for Archival Names>
+<Disaster Preparedness for Archives, connectedTo, Authority Control for Archival Names>
+<Environmental Control, connectedTo, Researchers Support>
+<Finding Aid Creation, connectedTo, Acquisition and Accessioning>
+<Finding Aid Creation, connectedTo, Authority Control for Archival Names>
+<Finding Aid Creation, connectedTo, Disaster Preparedness for Archives>
+<Finding Aid Creation, connectedTo, Grant Writing for Archives>
+<Grant Writing for Archives, connectedTo, Database Management>
+<Grant Writing for Archives, connectedTo, Disaster Preparedness for Archives>
+<Long_Term Digital Preservation, connectedTo, Records Transfer Processes>
+<Long_Term Digital Preservation, partOf, Conservation Treatment>
+<Metadata Creation, connectedTo, Public Access Systems>
+<Metadata Creation, partOf, Oral History Collection>
+<Outreach and Education, connectedTo, Authority Control for Archival Names>
+<Outreach and Education, connectedTo, Finding Aid Creation>
+<Outreach and Education, connectedTo, Grant Writing for Archives>
+<Outreach and Education, connectedTo, Researchers Support>
+<Public Access Systems, connectedTo, Disaster Preparedness for Archives>
+<Public Access Systems, partOf, Oral History Collection>
+<Records Retention Scheduling, connectedTo, Data Migration for Digital Archives>
+<Records Retention Scheduling, partOf, Conservation Treatment>
+<Records Transfer Processes, connectedTo, Records Retention Scheduling>
+<Records Transfer Processes, partOf, Conservation Treatment>
+<Subject Indexing for Archives, connectedTo, Metadata Creation>
+<Subject Indexing for Archives, partOf, Oral History Collection>
+<start, connectedTo, Outreach and Education>
diff --git a/train/mermaid/hard/mermaid_780.mmd b/train/mermaid/hard/mermaid_780.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b40e53caf9dc8e7644c4193e69ba28963455cd77
--- /dev/null
+++ b/train/mermaid/hard/mermaid_780.mmd
@@ -0,0 +1,96 @@
+graph LR
+    N0([Exhibition Curation])
+    N1[[Environmental Control]]
+    N2[[Grant Writing for Archives]]
+    N3(Preservation Planning)
+    N4[[Outreach and Education]]
+    N5(Researchers Support)
+    N6[/Appraisal and Selection/]
+    N7(Metadata Creation)
+    S0(( ))
+    S1(( ))
+    M2(( ))
+    subgraph Web Archiving
+        nest0_0[/Born_Digital Archiving/]
+        nest0_1[[Records Retention Scheduling]]
+        nest0_2[Digital Forensics for Archives]
+        nest0_3[/Ethical Use of Archival Materials/]
+    end
+    subgraph Acquisition and Accessioning
+        nest1_0[[Access and Reference Services]]
+        nest1_1([Digital Asset Management])
+        nest1_2{Long_Term Digital Preservation}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> |educates| N6
+    N6 --> N7
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N6 --> nest0_0
+    nest0_3 --> N7
+    nest1_0 -.-> |digitizes| nest1_1
+    nest1_1 --> nest1_2
+    N6 -.-> |implements| nest1_0
+    nest1_2 --> N5
+    N1 --> S0
+    S0 -.-> N3
+    S0 --> N5
+    S0 -.-> N7
+    S0 -.-> N6
+    N3 -.-> S1
+    S1 --> N5
+    S1 -.-> |locates| N6
+    N1 -.-> |authenticates| M2
+    N0 -.-> M2
+    M2 --> N3
+    style N0 fill:#FFEBEB,stroke:#FFC2C2
+    style N1 fill:#FFEBEB,stroke:#FFC2C2
+    style N2 fill:#F0F0F0,stroke:#D2D2D2
+    style N3 fill:#FFEBEB,stroke:#FFC2C2
+    style N4 fill:#F0F0F0,stroke:#D2D2D2
+    style N5 fill:#FDFCEB,stroke:#EAEFA5
+    style N6 fill:#F0F0F0,stroke:#D2D2D2
+    style N7 fill:#FFEBEB,stroke:#FFC2C2
+    style S0 fill:#FFEBEB,stroke:#FFC2C2
+    style S1 fill:#F0F0F0,stroke:#D2D2D2
+    style M2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_1 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_2 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_3 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_1 fill:#FDFCEB,stroke:#EAEFA5
+    style nest1_2 fill:#FDFCEB,stroke:#EAEFA5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#EAEFA5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_782.txt b/train/mermaid/hard/mermaid_782.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fdc3e35e17eb2f01aeb9356d816191f0bfa22c07
--- /dev/null
+++ b/train/mermaid/hard/mermaid_782.txt
@@ -0,0 +1,33 @@
+<Arrangement and Description, audits, Web Archiving>
+<Born_Digital Archiving, connectedTo, Collection Management Policy>
+<Born_Digital Archiving, partOf, Finding Aid Creation>
+<Collection Management Policy, connectedTo, Public Access Systems>
+<Community Archiving Projects, connectedTo, Collection Management Policy>
+<Digitization of Records, connectedTo, Community Archiving Projects>
+<Digitization of Records, policies, Legal and Ethical Compliance>
+<Emulation for Obsolete Formats, connectedTo, Born_Digital Archiving>
+<Emulation for Obsolete Formats, partOf, Finding Aid Creation>
+<Ethical Use of Archival Materials, connectedTo, Emulation for Obsolete Formats>
+<Ethical Use of Archival Materials, partOf, Finding Aid Creation>
+<Grant Writing for Archives, connectedTo, Serialization and Item Control>
+<Grant Writing for Archives, partOf, Acquisition and Accessioning>
+<Legal and Ethical Compliance, connectedTo, Arrangement and Description>
+<Legal and Ethical Compliance, connectedTo, Provenance Tracking>
+<Legal and Ethical Compliance, connectedTo, Public Access Systems>
+<Legal and Ethical Compliance, develops, Community Archiving Projects>
+<Outreach and Education, connectedTo, Records Retention Scheduling>
+<Provenance Tracking, connectedTo, Arrangement and Description>
+<Provenance Tracking, connectedTo, Collection Management Policy>
+<Provenance Tracking, connectedTo, Community Archiving Projects>
+<Provenance Tracking, connectedTo, Public Access Systems>
+<Provenance Tracking, connectedTo, Web Archiving>
+<Public Access Systems, connectedTo, Arrangement and Description>
+<Public Access Systems, connectedTo, Researchers Support>
+<Records Retention Scheduling, connectedTo, Digitization of Records>
+<Records Retention Scheduling, connectedTo, Grant Writing for Archives>
+<Records Retention Scheduling, connectedTo, Public Access Systems>
+<Records Retention Scheduling, monitors, Community Archiving Projects>
+<Researchers Support, connectedTo, Ethical Use of Archival Materials>
+<Researchers Support, partOf, Finding Aid Creation>
+<Serialization and Item Control, connectedTo, Public Access Systems>
+<Serialization and Item Control, partOf, Acquisition and Accessioning>
diff --git a/train/mermaid/hard/mermaid_783.mmd b/train/mermaid/hard/mermaid_783.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..488cee676ed95063ac7cccfed0e26bafb440e63c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_783.mmd
@@ -0,0 +1,124 @@
+graph TD
+    N0([User Interface for Digital Archives])
+    N1(Environmental Control)
+    N2[/Intellectual Property Rights Management/]
+    N3(Emulation for Obsolete Formats)
+    N4[[Acquisition and Accessioning]]
+    N5(Conservation Treatment)
+    N6([Digital Asset Management])
+    N7[Digitization of Records]
+    N8(Archival Advocacy)
+    N9([Oral History Collection])
+    N10[[Appraisal and Selection]]
+    N11{Security of Holdings}
+    N12[/Subject Indexing for Archives/]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Web Archiving
+        nest0_0[Preservation Planning]
+        nest0_1[[Records Transfer Processes]]
+        nest0_2[/Born_Digital Archiving/]
+        nest0_3[Grant Writing for Archives]
+    end
+    subgraph Access and Reference Services
+        nest1_0[/Collection Management Policy/]
+        nest1_1(Records Management Integration)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 --> |disseminates| nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> |processes| nest0_3
+    N1 --> nest0_0
+    nest0_3 -.-> N7
+    nest1_0 -.-> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 -.-> N5
+    N10 -.-> S0
+    S0 -.-> N12
+    S0 --> N13
+    N7 --> S1
+    S1 --> N9
+    S1 --> N13
+    S1 -.-> N12
+    N3 --> M0
+    N1 -.-> M0
+    N2 -.-> M0
+    M0 -.-> N7
+    N0 --> M1
+    N1 -.-> M1
+    M1 -.-> N3
+    style N0 fill:#FFDCD6,stroke:#FFB2A5
+    style N1 fill:#F0F0F0,stroke:#D2D2D2
+    style N2 fill:#FFDCD6,stroke:#FFB2A5
+    style N3 fill:#FFDCD6,stroke:#FFB2A5
+    style N4 fill:#D7CCC8,stroke:#795548
+    style N5 fill:#F0F0F0,stroke:#D2D2D2
+    style N6 fill:#F0F0F0,stroke:#D2D2D2
+    style N7 fill:#D7CCC8,stroke:#795548
+    style N8 fill:#D7CCC8,stroke:#795548
+    style N9 fill:#F0F0F0,stroke:#D2D2D2
+    style N10 fill:#D7CCC8,stroke:#795548
+    style N11 fill:#F0F0F0,stroke:#D2D2D2
+    style N12 fill:#FFDCD6,stroke:#FFB2A5
+    style N13 fill:#D7CCC8,stroke:#795548
+    style S0 fill:#D7CCC8,stroke:#795548
+    style S1 fill:#FFDCD6,stroke:#FFB2A5
+    style M0 fill:#D7CCC8,stroke:#795548
+    style M1 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_0 fill:#D7CCC8,stroke:#795548
+    style nest0_1 fill:#D7CCC8,stroke:#795548
+    style nest0_2 fill:#D7CCC8,stroke:#795548
+    style nest0_3 fill:#FFDCD6,stroke:#FFB2A5
+    style nest1_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_1 fill:#D7CCC8,stroke:#795548
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_783.txt b/train/mermaid/hard/mermaid_783.txt
new file mode 100644
index 0000000000000000000000000000000000000000..422760a96f7f27e14160f99f8b65e7b8645cca57
--- /dev/null
+++ b/train/mermaid/hard/mermaid_783.txt
@@ -0,0 +1,37 @@
+<Acquisition and Accessioning, connectedTo, Conservation Treatment>
+<Appraisal and Selection, connectedTo, Security of Holdings>
+<Appraisal and Selection, connectedTo, Subject Indexing for Archives>
+<Appraisal and Selection, connectedTo, end>
+<Archival Advocacy, connectedTo, Oral History Collection>
+<Born_Digital Archiving, partOf, Web Archiving>
+<Born_Digital Archiving, processes, Grant Writing for Archives>
+<Collection Management Policy, connectedTo, Records Management Integration>
+<Collection Management Policy, partOf, Access and Reference Services>
+<Conservation Treatment, connectedTo, Digital Asset Management>
+<Digital Asset Management, connectedTo, Digitization of Records>
+<Digitization of Records, connectedTo, Archival Advocacy>
+<Digitization of Records, connectedTo, Oral History Collection>
+<Digitization of Records, connectedTo, Subject Indexing for Archives>
+<Digitization of Records, connectedTo, end>
+<Emulation for Obsolete Formats, connectedTo, Acquisition and Accessioning>
+<Emulation for Obsolete Formats, connectedTo, Digitization of Records>
+<Environmental Control, connectedTo, Digitization of Records>
+<Environmental Control, connectedTo, Emulation for Obsolete Formats>
+<Environmental Control, connectedTo, Intellectual Property Rights Management>
+<Environmental Control, connectedTo, Preservation Planning>
+<Grant Writing for Archives, connectedTo, Digitization of Records>
+<Grant Writing for Archives, partOf, Web Archiving>
+<Intellectual Property Rights Management, connectedTo, Collection Management Policy>
+<Intellectual Property Rights Management, connectedTo, Digitization of Records>
+<Intellectual Property Rights Management, connectedTo, Emulation for Obsolete Formats>
+<Oral History Collection, connectedTo, Appraisal and Selection>
+<Preservation Planning, disseminates, Records Transfer Processes>
+<Preservation Planning, partOf, Web Archiving>
+<Records Management Integration, connectedTo, Conservation Treatment>
+<Records Management Integration, partOf, Access and Reference Services>
+<Records Transfer Processes, connectedTo, Born_Digital Archiving>
+<Records Transfer Processes, partOf, Web Archiving>
+<Security of Holdings, connectedTo, Subject Indexing for Archives>
+<Subject Indexing for Archives, connectedTo, end>
+<User Interface for Digital Archives, connectedTo, Emulation for Obsolete Formats>
+<User Interface for Digital Archives, connectedTo, Environmental Control>
diff --git a/train/mermaid/hard/mermaid_785.mmd b/train/mermaid/hard/mermaid_785.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..cf3f4fcf5beb40abeae59014b6fb9739750da504
--- /dev/null
+++ b/train/mermaid/hard/mermaid_785.mmd
@@ -0,0 +1,108 @@
+graph RL
+    N0([start])
+    N1{Interactive Display Development}
+    N2[(Mobile App Development)]
+    N3[(RFID for Object Tracking)]
+    N4[[Community Engagement Platforms]]
+    N5[Security Systems Integration]
+    N6{Wayfinding Systems}
+    N7[(Digital Preservation Strategies)]
+    N8([Digital Archiving])
+    N9{Fundraising Technology}
+    N10[(Virtual Tours)]
+    N11[(Exhibition Lighting Design)]
+    N12[Visitor Flow Analysis]
+    N13(Database Management)
+    N14([Online Shop Integration])
+    N15{Gamification of Museum Experiences}
+    N16([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Environmental Control Systems
+        nest0_0([Robotics in Exhibits])
+        nest0_1{Research Databases Access}
+        nest0_2{Content Management Systems}
+    end
+    subgraph Accessibility Technology for Visitors
+        nest1_0(3D Printing for Replicas)
+        nest1_1[(Conservation Technology)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N10 --> nest0_0
+    nest0_2 --> |no| N2
+    nest1_0 --> nest1_1
+    N8 -.-> nest1_0
+    nest1_1 -.-> N11
+    N3 --> S0
+    S0 -.-> N9
+    S0 --> N8
+    N1 -.-> S1
+    S1 -.-> N10
+    S1 --> N3
+    S1 --> N11
+    N10 -.-> S2
+    S2 --> N13
+    S2 -.-> N15
+    N1 -.-> M0
+    N0 --> M0
+    M0 --> N3
+    style S0 fill:#FFFDE0,stroke:#FFF8A6
+    style S1 fill:#FFFDE0,stroke:#FFF8A6
+    style S2 fill:#F0F0F0,stroke:#D2D2D2
+    style M0 fill:#FFFDE0,stroke:#FFF8A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#D2D2D2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_785.txt b/train/mermaid/hard/mermaid_785.txt
new file mode 100644
index 0000000000000000000000000000000000000000..20d9b97e52c505ae933cdf8ced3eb9588fbb448a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_785.txt
@@ -0,0 +1,36 @@
+<3D Printing for Replicas, connectedTo, Conservation Technology>
+<3D Printing for Replicas, partOf, Accessibility Technology for Visitors>
+<Community Engagement Platforms, connectedTo, Security Systems Integration>
+<Conservation Technology, connectedTo, Exhibition Lighting Design>
+<Conservation Technology, partOf, Accessibility Technology for Visitors>
+<Content Management Systems, no, Mobile App Development>
+<Content Management Systems, partOf, Environmental Control Systems>
+<Database Management, connectedTo, Online Shop Integration>
+<Digital Archiving, connectedTo, 3D Printing for Replicas>
+<Digital Archiving, connectedTo, Fundraising Technology>
+<Digital Preservation Strategies, connectedTo, Digital Archiving>
+<Exhibition Lighting Design, connectedTo, Visitor Flow Analysis>
+<Fundraising Technology, connectedTo, Virtual Tours>
+<Gamification of Museum Experiences, connectedTo, end>
+<Interactive Display Development, connectedTo, Exhibition Lighting Design>
+<Interactive Display Development, connectedTo, Mobile App Development>
+<Interactive Display Development, connectedTo, RFID for Object Tracking>
+<Interactive Display Development, connectedTo, Virtual Tours>
+<Mobile App Development, connectedTo, RFID for Object Tracking>
+<Online Shop Integration, connectedTo, Gamification of Museum Experiences>
+<RFID for Object Tracking, connectedTo, Community Engagement Platforms>
+<RFID for Object Tracking, connectedTo, Digital Archiving>
+<RFID for Object Tracking, connectedTo, Fundraising Technology>
+<Research Databases Access, connectedTo, Content Management Systems>
+<Research Databases Access, partOf, Environmental Control Systems>
+<Robotics in Exhibits, connectedTo, Research Databases Access>
+<Robotics in Exhibits, partOf, Environmental Control Systems>
+<Security Systems Integration, connectedTo, Wayfinding Systems>
+<Virtual Tours, connectedTo, Database Management>
+<Virtual Tours, connectedTo, Exhibition Lighting Design>
+<Virtual Tours, connectedTo, Gamification of Museum Experiences>
+<Virtual Tours, connectedTo, Robotics in Exhibits>
+<Visitor Flow Analysis, connectedTo, Database Management>
+<Wayfinding Systems, connectedTo, Digital Preservation Strategies>
+<start, connectedTo, Interactive Display Development>
+<start, connectedTo, RFID for Object Tracking>
diff --git a/train/mermaid/hard/mermaid_788.mmd b/train/mermaid/hard/mermaid_788.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..dac906ca870d20dc9e782724b80167f987987174
--- /dev/null
+++ b/train/mermaid/hard/mermaid_788.mmd
@@ -0,0 +1,132 @@
+graph TD
+    N0([Environmental Control Systems])
+    N1[(Fundraising Technology)]
+    N2{Exhibition Design}
+    N3([Visitor Analytics])
+    N4[Online Shop Integration]
+    N5[(RFID for Object Tracking)]
+    N6{Digital Storytelling}
+    N7[(Member Management Systems)]
+    N8{Digital Archiving}
+    N9[(Interactive Kiosks)]
+    N10(Digital Signage)
+    N11[(Multisensory Exhibits)]
+    N12(Gamification of Museum Experiences)
+    N13[Crowdsourcing for Collections]
+    N14[Content Management Systems]
+    N15([3D Printing for Replicas])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Research Databases Access
+        nest0_0{Soundscape Design}
+        nest0_1[Collection Digitization]
+    end
+    subgraph Wayfinding Systems
+        nest1_0([Interactive Display Development])
+        nest1_1[(Augmented Reality Experiences)]
+        nest1_2(Virtual Reality Experiences)
+        nest1_3(Digital Preservation Strategies)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> |exhibits| N12
+    N12 --> N13
+    N13 --> |visualizes| N14
+    N14 --> N15
+    nest0_0 -.-> |preserves| nest0_1
+    N11 -.-> nest0_0
+    nest0_1 --> N12
+    nest1_0 --> nest1_1
+    nest1_1 --> |models| nest1_2
+    nest1_2 --> nest1_3
+    N3 --> nest1_0
+    nest1_3 -.-> N14
+    N6 --> S0
+    S0 --> N9
+    S0 -.-> N10
+    N1 -.-> S1
+    S1 --> N8
+    S1 -.-> N14
+    S1 --> |designs| N11
+    S1 --> N9
+    N1 --> |sensors| M0
+    N0 --> |restores| M0
+    M0 -.-> N3
+    N0 --> M1
+    N1 --> M1
+    M1 -.-> N3
+    style N0 fill:#FFFDE7,stroke:#FFF176
+    style N1 fill:#E3F2FD,stroke:#64B5F6
+    style N2 fill:#FFFDE7,stroke:#FFF176
+    style N3 fill:#E3F2FD,stroke:#64B5F6
+    style N4 fill:#C8EDFF,stroke:#82DAFF
+    style N5 fill:#E3F2FD,stroke:#64B5F6
+    style N6 fill:#FFFDE7,stroke:#FFF176
+    style N7 fill:#C8EDFF,stroke:#82DAFF
+    style N8 fill:#E3F2FD,stroke:#64B5F6
+    style N9 fill:#FFFDE7,stroke:#FFF176
+    style N10 fill:#E3F2FD,stroke:#64B5F6
+    style N11 fill:#E3F2FD,stroke:#64B5F6
+    style N12 fill:#FFFDE7,stroke:#FFF176
+    style N13 fill:#FFFDE7,stroke:#FFF176
+    style N14 fill:#E3F2FD,stroke:#64B5F6
+    style N15 fill:#E3F2FD,stroke:#64B5F6
+    style S0 fill:#FFFDE7,stroke:#FFF176
+    style S1 fill:#FFFDE7,stroke:#FFF176
+    style M0 fill:#E3F2FD,stroke:#64B5F6
+    style M1 fill:#E3F2FD,stroke:#64B5F6
+    style nest0_0 fill:#E3F2FD,stroke:#64B5F6
+    style nest0_1 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_0 fill:#FFFDE7,stroke:#FFF176
+    style nest1_1 fill:#FFFDE7,stroke:#FFF176
+    style nest1_2 fill:#FFFDE7,stroke:#FFF176
+    style nest1_3 fill:#C8EDFF,stroke:#82DAFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#64B5F6,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFF176,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#82DAFF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_788.txt b/train/mermaid/hard/mermaid_788.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d4a7ef7749a6a9bcd67ba20d01338159a3e1f3e4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_788.txt
@@ -0,0 +1,39 @@
+<Augmented Reality Experiences, models, Virtual Reality Experiences>
+<Augmented Reality Experiences, partOf, Wayfinding Systems>
+<Collection Digitization, connectedTo, Gamification of Museum Experiences>
+<Collection Digitization, partOf, Research Databases Access>
+<Content Management Systems, connectedTo, 3D Printing for Replicas>
+<Crowdsourcing for Collections, visualizes, Content Management Systems>
+<Digital Archiving, connectedTo, Interactive Kiosks>
+<Digital Preservation Strategies, connectedTo, Content Management Systems>
+<Digital Preservation Strategies, partOf, Wayfinding Systems>
+<Digital Signage, connectedTo, Multisensory Exhibits>
+<Digital Storytelling, connectedTo, Digital Signage>
+<Digital Storytelling, connectedTo, Interactive Kiosks>
+<Digital Storytelling, connectedTo, Member Management Systems>
+<Environmental Control Systems, connectedTo, Fundraising Technology>
+<Environmental Control Systems, connectedTo, Visitor Analytics>
+<Environmental Control Systems, restores, Visitor Analytics>
+<Exhibition Design, connectedTo, Visitor Analytics>
+<Fundraising Technology, connectedTo, Content Management Systems>
+<Fundraising Technology, connectedTo, Digital Archiving>
+<Fundraising Technology, connectedTo, Exhibition Design>
+<Fundraising Technology, connectedTo, Interactive Kiosks>
+<Fundraising Technology, connectedTo, Visitor Analytics>
+<Fundraising Technology, designs, Multisensory Exhibits>
+<Fundraising Technology, sensors, Visitor Analytics>
+<Gamification of Museum Experiences, connectedTo, Crowdsourcing for Collections>
+<Interactive Display Development, connectedTo, Augmented Reality Experiences>
+<Interactive Display Development, partOf, Wayfinding Systems>
+<Interactive Kiosks, connectedTo, Digital Signage>
+<Member Management Systems, connectedTo, Digital Archiving>
+<Multisensory Exhibits, connectedTo, Soundscape Design>
+<Multisensory Exhibits, exhibits, Gamification of Museum Experiences>
+<Online Shop Integration, connectedTo, RFID for Object Tracking>
+<RFID for Object Tracking, connectedTo, Digital Storytelling>
+<Soundscape Design, partOf, Research Databases Access>
+<Soundscape Design, preserves, Collection Digitization>
+<Virtual Reality Experiences, connectedTo, Digital Preservation Strategies>
+<Virtual Reality Experiences, partOf, Wayfinding Systems>
+<Visitor Analytics, connectedTo, Interactive Display Development>
+<Visitor Analytics, connectedTo, Online Shop Integration>
diff --git a/train/mermaid/hard/mermaid_789.mmd b/train/mermaid/hard/mermaid_789.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b9a2dfb49225b625e697f01744c08016ec46be6f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_789.mmd
@@ -0,0 +1,130 @@
+graph RL
+    N0([Robotics in Exhibits])
+    N1(3D Printing for Replicas)
+    N2[Virtual Reality Experiences]
+    N3([Visitor Flow Analysis])
+    N4{Digital Archiving}
+    N5[Accessibility Technology for Visitors]
+    N6[[User Experience Design]]
+    N7[Digital Preservation Strategies]
+    N8[[Exhibition Lighting Design]]
+    N9[(Augmented Reality Experiences)]
+    N10([Security Systems Integration])
+    N11(Database Management)
+    N12(Collection Digitization)
+    N13[[Predictive Maintenance for Tech]]
+    N14[(Virtual Tours)]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Soundscape Design
+        nest0_0[[Gamification of Museum Experiences]]
+        nest0_1[Content Management Systems]
+        nest0_2{Cybersecurity for Museum Data}
+        nest0_3[/Educational Technology Integration/]
+    end
+    subgraph Multisensory Exhibits
+        nest1_0([Environmental Control Systems])
+        nest1_1[/Digital Signage/]
+        nest1_2(Online Shop Integration)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> |AR or VR| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> |displays| N9
+    N9 -.-> N10
+    N10 --> |communicates| N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 -.-> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N7 -.-> nest0_0
+    nest0_3 -.-> N1
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N1 --> |projects| nest1_0
+    nest1_2 --> |renders| N9
+    N2 -.-> S0
+    S0 --> N15
+    S0 -.-> N4
+    S0 --> N6
+    N1 -.-> S1
+    S1 -.-> N6
+    S1 -.-> N15
+    N3 --> M0
+    N6 -.-> M0
+    N5 -.-> M0
+    N1 --> M0
+    M0 -.-> N10
+    style N0 fill:#ECCFF5,stroke:#CD8FF2
+    style N1 fill:#ECCFF5,stroke:#CD8FF2
+    style N2 fill:#ECCFF5,stroke:#CD8FF2
+    style N3 fill:#ECCFF5,stroke:#CD8FF2
+    style N4 fill:#ECCFF5,stroke:#CD8FF2
+    style N5 fill:#EFEBE9,stroke:#A1887F
+    style N6 fill:#EFEBE9,stroke:#A1887F
+    style N7 fill:#E0F2F1,stroke:#4DB6AC
+    style N8 fill:#ECCFF5,stroke:#CD8FF2
+    style N9 fill:#E0F2F1,stroke:#4DB6AC
+    style N10 fill:#EFEBE9,stroke:#A1887F
+    style N11 fill:#EFEBE9,stroke:#A1887F
+    style N12 fill:#EFEBE9,stroke:#A1887F
+    style N13 fill:#E0F2F1,stroke:#4DB6AC
+    style N14 fill:#ECCFF5,stroke:#CD8FF2
+    style N15 fill:#EFEBE9,stroke:#A1887F
+    style S0 fill:#ECCFF5,stroke:#CD8FF2
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#EFEBE9,stroke:#A1887F
+    style nest0_0 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_1 fill:#ECCFF5,stroke:#CD8FF2
+    style nest0_2 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_3 fill:#ECCFF5,stroke:#CD8FF2
+    style nest1_0 fill:#E0F2F1,stroke:#4DB6AC
+    style nest1_1 fill:#EFEBE9,stroke:#A1887F
+    style nest1_2 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#CD8FF2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_792.mmd b/train/mermaid/hard/mermaid_792.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..cf3cc3faa5573c89c863f71d29b8d6f76559c884
--- /dev/null
+++ b/train/mermaid/hard/mermaid_792.mmd
@@ -0,0 +1,114 @@
+graph LR
+    N0([start])
+    N1[Augmented Reality Experiences]
+    N2([Member Management Systems])
+    N3(Fundraising Technology)
+    N4[/Educational Technology Integration/]
+    N5[Visitor Flow Analysis]
+    N6{Visitor Analytics}
+    N7(3D Scanning of Artifacts)
+    N8(Collection Digitization)
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Digital Preservation Strategies
+        nest0_0{Exhibition Lighting Design}
+        nest0_1(Community Engagement Platforms)
+        nest0_2[Gamification of Museum Experiences]
+        nest0_3[(Digital Archiving)]
+    end
+    subgraph 3D Printing for Replicas
+        nest1_0[/Digital Signage/]
+        nest1_1[(Predictive Maintenance for Tech)]
+        nest1_2(Digital Storytelling)
+        nest1_3([Environmental Control Systems])
+    end
+    N0 -.-> |installs| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N4 -.-> nest0_0
+    nest0_3 --> N6
+    nest1_0 -.-> |exhibits| nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N6 --> |robots| nest1_0
+    nest1_3 -.-> N5
+    N5 --> S1
+    S1 --> N8
+    S1 --> N7
+    N5 -.-> S2
+    S2 --> N8
+    S2 -.-> N7
+    N0 --> M1
+    N1 --> |communicates| M1
+    N3 -.-> M1
+    N2 --> M1
+    M1 --> N5
+    N1 -.-> M2
+    N0 -.-> M2
+    N2 -.-> |develops| M2
+    M2 --> N8
+    style N0 fill:#EFE6FF,stroke:#C2B2F0
+    style N1 fill:#EFE6FF,stroke:#C2B2F0
+    style N2 fill:#E0E6E9,stroke:#AABEC6
+    style N3 fill:#E0E6E9,stroke:#AABEC6
+    style N4 fill:#E4E0DF,stroke:#BDAFA8
+    style N5 fill:#E0E6E9,stroke:#AABEC6
+    style N6 fill:#EFE6FF,stroke:#C2B2F0
+    style N7 fill:#E4E0DF,stroke:#BDAFA8
+    style N8 fill:#E0E6E9,stroke:#AABEC6
+    style S1 fill:#EFE6FF,stroke:#C2B2F0
+    style S2 fill:#E4E0DF,stroke:#BDAFA8
+    style M1 fill:#E0E6E9,stroke:#AABEC6
+    style M2 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_0 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_1 fill:#E0E6E9,stroke:#AABEC6
+    style nest0_2 fill:#EFE6FF,stroke:#C2B2F0
+    style nest0_3 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_0 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_1 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_2 fill:#E4E0DF,stroke:#BDAFA8
+    style nest1_3 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_794.mmd b/train/mermaid/hard/mermaid_794.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3759a20e5746d97d3cff66b426dadaa8c33927e4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_794.mmd
@@ -0,0 +1,120 @@
+graph TD
+    N0([Labor Law Compliance])
+    N1([Compliance Hotlines])
+    N2(Product Safety Compliance)
+    N3[(Conflict of Interest Management)]
+    N4(Healthcare Compliance)
+    N5(Compliance Training)
+    N6(Supplier Code of Conduct)
+    N7[Monitoring and Enforcement]
+    N8[(Sanctions Compliance)]
+    N9{Incident Response Planning}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Compliance Software Implementation
+        nest0_0{Transparent Communication}
+        nest0_1(Anti_Money Laundering Compliance)
+    end
+    subgraph Legal Advisory
+        nest1_0(Corporate Governance Standards)
+        nest1_1[(Environmental Compliance)]
+        nest1_2[Internal Investigations]
+    end
+    N0 -.-> |mitigates| N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    N6 -.-> |develops| nest0_0
+    nest0_1 -.-> N9
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N7 --> nest1_0
+    nest1_2 -.-> N8
+    N4 --> S0
+    S0 -.-> |laws| N6
+    S0 -.-> N9
+    S0 -.-> N7
+    N4 --> S1
+    S1 --> N8
+    S1 -.-> N9
+    S1 -.-> N7
+    N3 --> S2
+    S2 --> |counsels| N7
+    S2 -.-> N9
+    S2 --> N6
+    S2 --> N5
+    N2 -.-> M0
+    N1 -.-> M0
+    N3 -.-> M0
+    M0 --> N5
+    N2 -.-> M1
+    N0 --> M1
+    N1 --> |procedures| M1
+    M1 --> N5
+    style N0 fill:#FFCDD2,stroke:#F44336
+    style N1 fill:#FFCDD2,stroke:#F44336
+    style N2 fill:#FFCDD2,stroke:#F44336
+    style N3 fill:#E1BEE7,stroke:#9C27B0
+    style N4 fill:#F1F8E9,stroke:#388E3C
+    style N5 fill:#F1F8E9,stroke:#388E3C
+    style N6 fill:#F1F8E9,stroke:#388E3C
+    style N7 fill:#E1BEE7,stroke:#9C27B0
+    style N8 fill:#F1F8E9,stroke:#388E3C
+    style N9 fill:#E1BEE7,stroke:#9C27B0
+    style S0 fill:#F1F8E9,stroke:#388E3C
+    style S1 fill:#F1F8E9,stroke:#388E3C
+    style S2 fill:#FFCDD2,stroke:#F44336
+    style M0 fill:#F1F8E9,stroke:#388E3C
+    style M1 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_0 fill:#F1F8E9,stroke:#388E3C
+    style nest0_1 fill:#FFCDD2,stroke:#F44336
+    style nest1_0 fill:#F1F8E9,stroke:#388E3C
+    style nest1_1 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_2 fill:#F1F8E9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_794.txt b/train/mermaid/hard/mermaid_794.txt
new file mode 100644
index 0000000000000000000000000000000000000000..39281a76fa0bef4869cd5be0597a6299ff17a175
--- /dev/null
+++ b/train/mermaid/hard/mermaid_794.txt
@@ -0,0 +1,33 @@
+<Anti_Money Laundering Compliance, connectedTo, Incident Response Planning>
+<Anti_Money Laundering Compliance, partOf, Compliance Software Implementation>
+<Compliance Hotlines, connectedTo, Compliance Training>
+<Compliance Hotlines, connectedTo, Product Safety Compliance>
+<Compliance Hotlines, procedures, Compliance Training>
+<Compliance Training, connectedTo, Supplier Code of Conduct>
+<Conflict of Interest Management, connectedTo, Compliance Training>
+<Conflict of Interest Management, connectedTo, Healthcare Compliance>
+<Conflict of Interest Management, connectedTo, Incident Response Planning>
+<Conflict of Interest Management, connectedTo, Supplier Code of Conduct>
+<Conflict of Interest Management, counsels, Monitoring and Enforcement>
+<Corporate Governance Standards, connectedTo, Environmental Compliance>
+<Corporate Governance Standards, partOf, Legal Advisory>
+<Environmental Compliance, connectedTo, Internal Investigations>
+<Environmental Compliance, partOf, Legal Advisory>
+<Healthcare Compliance, connectedTo, Compliance Training>
+<Healthcare Compliance, connectedTo, Incident Response Planning>
+<Healthcare Compliance, connectedTo, Monitoring and Enforcement>
+<Healthcare Compliance, connectedTo, Sanctions Compliance>
+<Healthcare Compliance, laws, Supplier Code of Conduct>
+<Internal Investigations, connectedTo, Sanctions Compliance>
+<Internal Investigations, partOf, Legal Advisory>
+<Labor Law Compliance, connectedTo, Compliance Training>
+<Labor Law Compliance, mitigates, Compliance Hotlines>
+<Monitoring and Enforcement, connectedTo, Corporate Governance Standards>
+<Monitoring and Enforcement, connectedTo, Sanctions Compliance>
+<Product Safety Compliance, connectedTo, Compliance Training>
+<Product Safety Compliance, connectedTo, Conflict of Interest Management>
+<Sanctions Compliance, connectedTo, Incident Response Planning>
+<Supplier Code of Conduct, connectedTo, Monitoring and Enforcement>
+<Supplier Code of Conduct, develops, Transparent Communication>
+<Transparent Communication, connectedTo, Anti_Money Laundering Compliance>
+<Transparent Communication, partOf, Compliance Software Implementation>
diff --git a/train/mermaid/hard/mermaid_795.mmd b/train/mermaid/hard/mermaid_795.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..a618afa2698f34775c9cc9699ce2a4801e338e88
--- /dev/null
+++ b/train/mermaid/hard/mermaid_795.mmd
@@ -0,0 +1,111 @@
+graph BT
+    N0([start])
+    N1[[Transparent Communication]]
+    N2{Data Privacy Compliance}
+    N3[Consumer Protection Compliance]
+    N4[(Labor Law Compliance)]
+    N5[Conflict of Interest Management]
+    N6[[Reporting Mechanisms]]
+    N7(Fair Competition Compliance)
+    N8[Internal Investigations]
+    N9[Ethics Committee Formation]
+    N10{Export Control Compliance}
+    N11(Corporate Governance Standards)
+    N12[Legal Advisory]
+    N13[Anti_Money Laundering Compliance]
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Risk Assessment
+        nest0_0(Compliance Training)
+        nest0_1[Bias Mitigation]
+        nest0_2[Compliance Software Implementation]
+        nest0_3[Audit Planning]
+    end
+    subgraph Incident Response Planning
+        nest1_0[(Policy Development)]
+        nest1_1[/Data Ethics/]
+        nest1_2([Product Safety Compliance])
+        nest1_3[[Regulatory Interpretation]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> |yes| N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N12 --> nest0_0
+    nest0_3 --> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N4 --> nest1_0
+    nest1_3 -.-> N1
+    N6 -.-> S0
+    S0 -.-> N8
+    S0 -.-> N14
+    N8 --> S1
+    S1 -.-> N11
+    S1 --> N12
+    N7 --> S2
+    S2 --> N11
+    S2 --> N12
+    S2 -.-> N9
+    N0 --> M1
+    N1 -.-> M1
+    M1 --> N3
+    style S0 fill:#FFEBEE,stroke:#E57373
+    style S1 fill:#B3E5FC,stroke:#03A9F4
+    style S2 fill:#B3E5FC,stroke:#03A9F4
+    style M1 fill:#FFEBEE,stroke:#E57373
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A2D0FF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_796.txt b/train/mermaid/hard/mermaid_796.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0b2c40bca0c21708083c060cff590d150ad8684f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_796.txt
@@ -0,0 +1,33 @@
+<CSR Reporting, connectedTo, Data Ethics>
+<CSR Reporting, partOf, Bias Mitigation>
+<Code of Conduct Implementation, connectedTo, Compliance Training>
+<Code of Conduct Implementation, connectedTo, Corporate Governance Standards>
+<Code of Conduct Implementation, connectedTo, Information Security Compliance>
+<Code of Conduct Implementation, policies, Legal Advisory>
+<Compliance Training, connectedTo, Legal Advisory>
+<Consumer Protection Compliance, connectedTo, Audit Planning>
+<Consumer Protection Compliance, connectedTo, Export Control Compliance>
+<Consumer Protection Compliance, connectedTo, Regulatory Interpretation>
+<Corporate Governance Standards, connectedTo, Consumer Protection Compliance>
+<Data Ethics, connectedTo, Legal Advisory>
+<Data Ethics, partOf, Bias Mitigation>
+<Ethical Leadership Development, connectedTo, Audit Planning>
+<Ethical Leadership Development, connectedTo, Compliance Training>
+<Export Control Compliance, connectedTo, Risk Assessment>
+<Export Control Compliance, partOf, Third_Party Due Diligence>
+<Information Security Compliance, connectedTo, Audit Planning>
+<Information Security Compliance, connectedTo, Compliance Training>
+<Information Security Compliance, connectedTo, Consumer Protection Compliance>
+<Information Security Compliance, connectedTo, Ethical Leadership Development>
+<Information Security Compliance, connectedTo, Regulatory Interpretation>
+<Legal Advisory, connectedTo, Consumer Protection Compliance>
+<Legal Advisory, connectedTo, Corporate Governance Standards>
+<Monitoring and Enforcement, connectedTo, Audit Planning>
+<Monitoring and Enforcement, connectedTo, Policy Development>
+<Policy Development, connectedTo, Code of Conduct Implementation>
+<Policy Development, connectedTo, Consumer Protection Compliance>
+<Regulatory Interpretation, connectedTo, Audit Planning>
+<Regulatory Interpretation, connectedTo, CSR Reporting>
+<Risk Assessment, connectedTo, Legal Advisory>
+<Risk Assessment, partOf, Third_Party Due Diligence>
+<start, connectedTo, Monitoring and Enforcement>
diff --git a/train/mermaid/hard/mermaid_798.txt b/train/mermaid/hard/mermaid_798.txt
new file mode 100644
index 0000000000000000000000000000000000000000..2bd80587c003bc90e794fc80c5186563bf11d99b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_798.txt
@@ -0,0 +1,40 @@
+<Anti_Bribery and Corruption Compliance, no, Internal Investigations>
+<Audit Planning, connectedTo, Corporate Governance Standards>
+<Audit Planning, connectedTo, Data Privacy Compliance>
+<Bias Mitigation, connectedTo, Data Ethics>
+<Bias Mitigation, partOf, Monitoring and Enforcement>
+<Compliance Training, connectedTo, Ethical Leadership Development>
+<Conflict of Interest Management, connectedTo, Sanctions Compliance>
+<Corporate Governance Standards, connectedTo, Legal Advisory>
+<Data Ethics, connectedTo, Compliance Training>
+<Data Ethics, connectedTo, ESG Integration>
+<Data Ethics, partOf, Monitoring and Enforcement>
+<Data Privacy Compliance, connectedTo, Ethics Committee Formation>
+<Data Privacy Compliance, partOf, Risk Assessment>
+<ESG Integration, connectedTo, Ethical Leadership Development>
+<ESG Integration, connectedTo, Third_Party Due Diligence>
+<ESG Integration, partOf, Monitoring and Enforcement>
+<Ethical AI Guidelines, connectedTo, Financial Regulations Compliance>
+<Ethical AI Guidelines, connectedTo, Legal Advisory>
+<Ethical Decision_Making Frameworks, no, Audit Planning>
+<Ethical Leadership Development, connectedTo, Legal Advisory>
+<Ethical Leadership Development, connectedTo, Transparent Communication>
+<Ethical Leadership Development, yes, Anti_Bribery and Corruption Compliance>
+<Ethics Committee Formation, connectedTo, Ethical AI Guidelines>
+<Ethics Committee Formation, partOf, Risk Assessment>
+<Export Control Compliance, yes, Anti_Bribery and Corruption Compliance>
+<Fair Competition Compliance, connectedTo, Ethical AI Guidelines>
+<Financial Regulations Compliance, connectedTo, Compliance Training>
+<Internal Investigations, connectedTo, end>
+<Legal Advisory, connectedTo, Export Control Compliance>
+<Sanctions Compliance, connectedTo, Ethical Decision_Making Frameworks>
+<Sanctions Compliance, connectedTo, end>
+<Sanctions Compliance, no, Legal Advisory>
+<Stakeholder Engagement on Ethics, connectedTo, ESG Integration>
+<Stakeholder Engagement on Ethics, connectedTo, Fair Competition Compliance>
+<Third_Party Due Diligence, connectedTo, Bias Mitigation>
+<Third_Party Due Diligence, partOf, Monitoring and Enforcement>
+<Transparent Communication, connectedTo, Audit Planning>
+<Transparent Communication, connectedTo, Conflict of Interest Management>
+<start, connectedTo, Legal Advisory>
+<start, connectedTo, Stakeholder Engagement on Ethics>
diff --git a/train/mermaid/hard/mermaid_801.mmd b/train/mermaid/hard/mermaid_801.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c1584ae14ee9865e72146fcee33f6391840e788c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_801.mmd
@@ -0,0 +1,108 @@
+graph TD
+    N0([start])
+    N1(Forensic Psychology)
+    N2(Laboratory Analysis)
+    N3[/Voice Recognition/]
+    N4{Cyber Crime Investigation}
+    N5[[Toxicology Testing]]
+    N6[(Crime Scene Investigation)]
+    N7(Forensic Entomology)
+    N8{Crime Database Search}
+    N9([Handwriting Analysis])
+    N10{Facial Recognition}
+    N11([Ballistics Analysis])
+    N12[/Polygraph Examination/]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Forensic Photography
+        nest0_0[(Mobile Device Forensics)]
+        nest0_1[(Fingerprint Analysis)]
+        nest0_2([Evidence Collection])
+    end
+    subgraph Forensic Interviewing
+        nest1_0(Forensic Botany)
+        nest1_1(Legal Standards Compliance)
+        nest1_2[(Digital Forensics)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> |no| N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> |no| N13
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N11 -.-> nest0_0
+    nest0_2 -.-> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N6 -.-> nest1_0
+    nest1_2 -.-> N9
+    N0 --> S0
+    S0 --> N5
+    S0 -.-> N10
+    S0 -.-> N8
+    S0 --> N13
+    N3 --> S1
+    S1 -.-> N9
+    S1 -.-> N5
+    N3 -.-> S2
+    S2 --> N10
+    S2 --> N7
+    S2 -.-> N8
+    S2 -.-> N6
+    N4 --> M0
+    N2 -.-> M0
+    M0 --> N8
+    style S0 fill:#F9FBE7,stroke:#C0CA33
+    style S1 fill:#EFEBE9,stroke:#A1887F
+    style S2 fill:#EFEBE9,stroke:#A1887F
+    style M0 fill:#FFE88D,stroke:#FFDA4E
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFDA4E,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#A1887F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_803.txt b/train/mermaid/hard/mermaid_803.txt
new file mode 100644
index 0000000000000000000000000000000000000000..55bc9fd5e118fb8a40d1811825505c1197d30aef
--- /dev/null
+++ b/train/mermaid/hard/mermaid_803.txt
@@ -0,0 +1,42 @@
+<Arson Investigation, connectedTo, Toolmark Analysis>
+<Ballistics Analysis, connectedTo, Forensic Odontology>
+<Ballistics Analysis, connectedTo, Vehicle Forensics>
+<Bloodstain Pattern Analysis, connectedTo, Digital Forensics>
+<Chain of Custody Management, connectedTo, Facial Recognition>
+<Chain of Custody Management, partOf, Malware Analysis>
+<Cold Case Review, partOf, Cloud Forensics>
+<Cold Case Review, yes, Facial Recognition>
+<Crime Scene Investigation, connectedTo, Forensic Entomology>
+<Data Recovery, connectedTo, Chain of Custody Management>
+<Data Recovery, partOf, Malware Analysis>
+<Digital Forensics, connectedTo, Forensic Anthropology>
+<Document Examination, connectedTo, Voice Recognition>
+<Evidence Collection, connectedTo, Polygraph Examination>
+<Evidence Collection, partOf, Cloud Forensics>
+<Evidence Preservation, connectedTo, Evidence Collection>
+<Evidence Preservation, partOf, Cloud Forensics>
+<Expert Witness Testimony, connectedTo, Facial Recognition>
+<Expert Witness Testimony, connectedTo, Vehicle Forensics>
+<Facial Recognition, connectedTo, Ballistics Analysis>
+<Facial Recognition, connectedTo, Vehicle Forensics>
+<Forensic Anthropology, connectedTo, Crime Scene Investigation>
+<Forensic Anthropology, connectedTo, Evidence Preservation>
+<Forensic Entomology, connectedTo, Document Examination>
+<Forensic Odontology, connectedTo, Legal Standards Compliance>
+<Forensic Odontology, partOf, Malware Analysis>
+<Forensic Pathology, connectedTo, Expert Witness Testimony>
+<Forensic Pathology, connectedTo, Forensic Entomology>
+<Forensic Pathology, connectedTo, Vehicle Forensics>
+<Forensic Pathology, connectedTo, Voice Recognition>
+<Forensic Pathology, connectedTo, end>
+<Legal Standards Compliance, connectedTo, Data Recovery>
+<Legal Standards Compliance, partOf, Malware Analysis>
+<Polygraph Examination, connectedTo, Cold Case Review>
+<Polygraph Examination, partOf, Cloud Forensics>
+<Toolmark Analysis, connectedTo, end>
+<Vehicle Forensics, connectedTo, Bloodstain Pattern Analysis>
+<Voice Recognition, connectedTo, Arson Investigation>
+<Voice Recognition, connectedTo, Toolmark Analysis>
+<Voice Recognition, connectedTo, end>
+<start, connectedTo, Forensic Pathology>
+<start, connectedTo, Vehicle Forensics>
diff --git a/train/mermaid/hard/mermaid_804.txt b/train/mermaid/hard/mermaid_804.txt
new file mode 100644
index 0000000000000000000000000000000000000000..406cc199a88f001b3d015fce49ce7275eeae2a5b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_804.txt
@@ -0,0 +1,30 @@
+<Arson Investigation, connectedTo, Trace Evidence Analysis>
+<Arson Investigation, partOf, Crime Scene Investigation>
+<Ballistics Analysis, connectedTo, Arson Investigation>
+<Ballistics Analysis, connectedTo, Malware Analysis>
+<Bloodstain Pattern Analysis, connectedTo, Facial Recognition>
+<Cloud Forensics, connectedTo, Ballistics Analysis>
+<Cloud Forensics, connectedTo, Facial Recognition>
+<DNA Profiling, connectedTo, Ballistics Analysis>
+<DNA Profiling, connectedTo, Bloodstain Pattern Analysis>
+<DNA Profiling, connectedTo, Cloud Forensics>
+<DNA Profiling, connectedTo, Expert Witness Testimony>
+<DNA Profiling, connectedTo, Facial Recognition>
+<DNA Profiling, connectedTo, Forensic Botany>
+<DNA Profiling, connectedTo, Forensic Interviewing>
+<DNA Profiling, no, Malware Analysis>
+<DNA Profiling, yes, Toolmark Analysis>
+<Facial Recognition, yes, Expert Witness Testimony>
+<Forensic Accounting, connectedTo, Malware Analysis>
+<Forensic Accounting, partOf, Network Forensics>
+<Forensic Botany, connectedTo, Ballistics Analysis>
+<Forensic Botany, connectedTo, Vehicle Forensics>
+<Forensic Interviewing, connectedTo, Cloud Forensics>
+<Forensic Interviewing, connectedTo, Facial Recognition>
+<Malware Analysis, connectedTo, Bloodstain Pattern Analysis>
+<Toolmark Analysis, connectedTo, Forensic Accounting>
+<Toolmark Analysis, partOf, Network Forensics>
+<Trace Evidence Analysis, partOf, Crime Scene Investigation>
+<Trace Evidence Analysis, yes, Vehicle Forensics>
+<Vehicle Forensics, connectedTo, Forensic Interviewing>
+<start, connectedTo, DNA Profiling>
diff --git a/train/mermaid/hard/mermaid_806.txt b/train/mermaid/hard/mermaid_806.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5f865862e88c715c49d0f6018a502ef1c6acdcdd
--- /dev/null
+++ b/train/mermaid/hard/mermaid_806.txt
@@ -0,0 +1,34 @@
+<Ballistics Analysis, ballistics, Legal Standards Compliance>
+<Bloodstain Pattern Analysis, connectedTo, Data Recovery>
+<Bloodstain Pattern Analysis, connectedTo, Expert Witness Testimony>
+<Chain of Custody Management, connectedTo, Crime Scene Investigation>
+<Chain of Custody Management, partOf, Toxicology Testing>
+<Cold Case Review, connectedTo, Bloodstain Pattern Analysis>
+<Cold Case Review, connectedTo, Toolmark Analysis>
+<Crime Scene Investigation, connectedTo, Network Forensics>
+<Crime Scene Investigation, partOf, Toxicology Testing>
+<Data Recovery, connectedTo, Forensic Psychology>
+<Digital Forensics, connectedTo, Forensic Psychology>
+<Digital Forensics, partOf, Forensic Pathology>
+<Document Examination, develops, Polygraph Examination>
+<Expert Witness Testimony, partOf, Forensic Pathology>
+<Expert Witness Testimony, trace_evidence, Digital Forensics>
+<Facial Recognition, connectedTo, Ballistics Analysis>
+<Fingerprint Analysis, connectedTo, Facial Recognition>
+<Fingerprint Analysis, connectedTo, Forensic Psychology>
+<Forensic Botany, connectedTo, Bloodstain Pattern Analysis>
+<Forensic Psychology, connectedTo, end>
+<Laboratory Analysis, connectedTo, Bloodstain Pattern Analysis>
+<Laboratory Analysis, connectedTo, Forensic Psychology>
+<Laboratory Analysis, connectedTo, Vehicle Forensics>
+<Legal Standards Compliance, connectedTo, Bloodstain Pattern Analysis>
+<Legal Standards Compliance, connectedTo, Data Recovery>
+<Legal Standards Compliance, connectedTo, Forensic Botany>
+<Legal Standards Compliance, connectedTo, Forensic Psychology>
+<Legal Standards Compliance, connectedTo, end>
+<Network Forensics, connectedTo, Fingerprint Analysis>
+<Network Forensics, connectedTo, Forensic Psychology>
+<Polygraph Examination, connectedTo, Chain of Custody Management>
+<Polygraph Examination, connectedTo, Network Forensics>
+<Toolmark Analysis, collects, Document Examination>
+<Vehicle Forensics, connectedTo, Cold Case Review>
diff --git a/train/mermaid/hard/mermaid_808.txt b/train/mermaid/hard/mermaid_808.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0f881200f308834885fc19078593a1aee92f564a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_808.txt
@@ -0,0 +1,29 @@
+<Arson Investigation, connectedTo, Expert Witness Testimony>
+<Bloodstain Pattern Analysis, connectedTo, Toolmark Analysis>
+<Bloodstain Pattern Analysis, partOf, Forensic Psychology>
+<Cold Case Review, connectedTo, Expert Witness Testimony>
+<Cold Case Review, connectedTo, Toxicology Testing>
+<Data Recovery, connectedTo, Document Examination>
+<Digital Forensics, connectedTo, Bloodstain Pattern Analysis>
+<Digital Forensics, partOf, Forensic Psychology>
+<Expert Witness Testimony, connectedTo, Data Recovery>
+<Expert Witness Testimony, connectedTo, Document Examination>
+<Expert Witness Testimony, connectedTo, Fingerprint Analysis>
+<Expert Witness Testimony, fingerprints, Trace Evidence Analysis>
+<Fingerprint Analysis, connectedTo, Malware Analysis>
+<Fingerprint Analysis, connectedTo, Trace Evidence Analysis>
+<Forensic Photography, connectedTo, Expert Witness Testimony>
+<Forensic Photography, partOf, Forensic Botany>
+<Laboratory Analysis, connectedTo, Data Recovery>
+<Laboratory Analysis, connectedTo, Digital Forensics>
+<Laboratory Analysis, connectedTo, Document Examination>
+<Laboratory Analysis, connectedTo, Voice Recognition>
+<Laboratory Analysis, develops, Document Examination>
+<Malware Analysis, analyzes, Forensic Photography>
+<Malware Analysis, partOf, Forensic Botany>
+<Toolmark Analysis, connectedTo, Fingerprint Analysis>
+<Toolmark Analysis, partOf, Forensic Psychology>
+<Toxicology Testing, connectedTo, Arson Investigation>
+<Toxicology Testing, connectedTo, Expert Witness Testimony>
+<Trace Evidence Analysis, toxicology, Laboratory Analysis>
+<Voice Recognition, connectedTo, Data Recovery>
diff --git a/train/mermaid/hard/mermaid_811.txt b/train/mermaid/hard/mermaid_811.txt
new file mode 100644
index 0000000000000000000000000000000000000000..eefbf87059c809412069ac60370a494c041f110c
--- /dev/null
+++ b/train/mermaid/hard/mermaid_811.txt
@@ -0,0 +1,33 @@
+<Bomb Disposal, connectedTo, Intelligence Gathering>
+<Bomb Disposal, partOf, Biometric Screening>
+<Border Security, connectedTo, Terrorism Financing Interdiction>
+<Border Security, yes, Information Sharing>
+<Chemical Biological Radiological Nuclear Defense, connectedTo, Transportation Security>
+<Critical Infrastructure Protection, connectedTo, Early Warning Systems>
+<Critical Infrastructure Protection, connectedTo, Information Sharing>
+<Critical Infrastructure Protection, connectedTo, Vulnerability Assessment>
+<Early Warning Systems, connectedTo, Information Sharing>
+<Fusion Center Operations, connectedTo, Hostage Negotiation>
+<Fusion Center Operations, partOf, Threat Assessment>
+<Hostage Negotiation, connectedTo, Psychological Operations>
+<Hostage Negotiation, partOf, Threat Assessment>
+<Information Sharing, connectedTo, Fusion Center Operations>
+<Information Sharing, connectedTo, Intelligence Analysis>
+<Intelligence Gathering, connectedTo, Legislation and Policy Development>
+<Intelligence Gathering, partOf, Biometric Screening>
+<International Cooperation, connectedTo, Bomb Disposal>
+<International Cooperation, connectedTo, Border Security>
+<Legislation and Policy Development, connectedTo, Vulnerability Assessment>
+<Legislation and Policy Development, partOf, Biometric Screening>
+<Military Counterterrorism, connectedTo, Vulnerability Assessment>
+<Port Security, connectedTo, Intelligence Analysis>
+<Port Security, partOf, Threat Assessment>
+<Psychological Operations, partOf, Threat Assessment>
+<Psychological Operations, yes, Port Security>
+<Terrorism Financing Interdiction, connectedTo, Chemical Biological Radiological Nuclear Defense>
+<Terrorism Financing Interdiction, no, Information Sharing>
+<Transportation Security, connectedTo, Early Warning Systems>
+<Transportation Security, connectedTo, Intelligence Analysis>
+<Transportation Security, yes, Critical Infrastructure Protection>
+<Vulnerability Assessment, connectedTo, International Cooperation>
+<start, no, Military Counterterrorism>
diff --git a/train/mermaid/hard/mermaid_814.txt b/train/mermaid/hard/mermaid_814.txt
new file mode 100644
index 0000000000000000000000000000000000000000..97fee8a518ff7e5325adcb4a831a3ee6d7d5b8f8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_814.txt
@@ -0,0 +1,35 @@
+<Behavioral Threat Assessment, connectedTo, Chemical Biological Radiological Nuclear Defense>
+<Behavioral Threat Assessment, partOf, International Cooperation>
+<Border Security, connectedTo, Counter_Propaganda>
+<Border Security, connectedTo, Threat Assessment>
+<Border Security, connectedTo, Training Exercises>
+<Chemical Biological Radiological Nuclear Defense, connectedTo, Forensic Investigation of Attacks>
+<Counter_Propaganda, connectedTo, Chemical Biological Radiological Nuclear Defense>
+<Counter_Propaganda, connectedTo, Military Counterterrorism>
+<Counter_Propaganda, connectedTo, Vulnerability Assessment>
+<Data Analytics for Terrorism, connectedTo, Training Exercises>
+<Drone Countermeasures, connectedTo, Border Security>
+<Drone Countermeasures, partOf, Post_Incident Recovery>
+<Intelligence Analysis, connectedTo, Border Security>
+<Intelligence Analysis, connectedTo, Counter_Propaganda>
+<Intelligence Analysis, connectedTo, Threat Assessment>
+<Military Counterterrorism, partOf, Post_Incident Recovery>
+<Military Counterterrorism, responds, Port Security>
+<Port Security, connectedTo, Psychological Operations>
+<Port Security, partOf, Post_Incident Recovery>
+<Psychological Operations, connectedTo, Drone Countermeasures>
+<Psychological Operations, partOf, Post_Incident Recovery>
+<Terrorism Financing Interdiction, connectedTo, Behavioral Threat Assessment>
+<Terrorism Financing Interdiction, partOf, International Cooperation>
+<Threat Assessment, connectedTo, Data Analytics for Terrorism>
+<Threat Assessment, connectedTo, Forensic Investigation of Attacks>
+<Threat Assessment, connectedTo, Training Exercises>
+<Threat Assessment, policies_develops, Chemical Biological Radiological Nuclear Defense>
+<Training Exercises, connectedTo, Chemical Biological Radiological Nuclear Defense>
+<Training Exercises, connectedTo, Counter_Propaganda>
+<Training Exercises, connectedTo, Forensic Investigation of Attacks>
+<Vulnerability Assessment, partOf, International Cooperation>
+<Vulnerability Assessment, propaganda_counters, Terrorism Financing Interdiction>
+<start, connectedTo, Intelligence Analysis>
+<start, connectedTo, Threat Assessment>
+<start, connectedTo, Training Exercises>
diff --git a/train/mermaid/hard/mermaid_818.txt b/train/mermaid/hard/mermaid_818.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c09cc320606e339d95275696a06e2c818d5af110
--- /dev/null
+++ b/train/mermaid/hard/mermaid_818.txt
@@ -0,0 +1,37 @@
+<Access Control Systems, connectedTo, Network Monitoring>
+<Access Control Systems, connectedTo, Thermal Imaging>
+<Anomaly Detection, connectedTo, Security Personnel Operations>
+<Asset Tracking, connectedTo, Cyber Surveillance>
+<Audio Surveillance, connectedTo, Access Control Systems>
+<Audio Surveillance, connectedTo, Behavioral Analytics>
+<Automated Threat Detection, connectedTo, Wildlife Tracking>
+<Automated Threat Detection, partOf, Intrusion Detection>
+<Behavioral Analytics, connectedTo, Social Media Monitoring>
+<Behavioral Analytics, partOf, Intrusion Detection>
+<Cyber Surveillance, connectedTo, Audio Surveillance>
+<Cyber Surveillance, connectedTo, Traffic Surveillance>
+<Data Storage and Retention, captures, Access Control Systems>
+<Data Storage and Retention, connectedTo, Audio Surveillance>
+<Data Storage and Retention, connectedTo, Remote Sensing>
+<Data Storage and Retention, tracks, Cyber Surveillance>
+<Ethical Guidelines, blocks, Asset Tracking>
+<Ethical Guidelines, connectedTo, Access Control Systems>
+<Ethical Guidelines, connectedTo, Cyber Surveillance>
+<Ethical Guidelines, connectedTo, Network Monitoring>
+<Physical Security Integration, connectedTo, Asset Tracking>
+<Physical Security Integration, connectedTo, Ethical Guidelines>
+<Physical Security Integration, connectedTo, Security Personnel Operations>
+<Physical Security Integration, maintains, Network Monitoring>
+<Remote Sensing, connectedTo, Asset Tracking>
+<Remote Sensing, connectedTo, Physical Security Integration>
+<Security Personnel Operations, connectedTo, Network Monitoring>
+<Security Personnel Operations, connectedTo, Wildlife Tracking>
+<Sensor Network Deployment, connectedTo, Remote Sensing>
+<Sensor Network Deployment, partOf, Biometric Data Analysis>
+<Social Media Monitoring, connectedTo, Automated Threat Detection>
+<Social Media Monitoring, partOf, Intrusion Detection>
+<Thermal Imaging, connectedTo, Anomaly Detection>
+<Traffic Surveillance, connectedTo, Sensor Network Deployment>
+<Traffic Surveillance, partOf, Biometric Data Analysis>
+<Wildlife Tracking, connectedTo, Network Monitoring>
+<start, connectedTo, Data Storage and Retention>
diff --git a/train/mermaid/hard/mermaid_82.mmd b/train/mermaid/hard/mermaid_82.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..29adb672bea5f0a181c36798d85a0607c2950909
--- /dev/null
+++ b/train/mermaid/hard/mermaid_82.mmd
@@ -0,0 +1,120 @@
+graph BT
+    N0([start])
+    N1{Organic Certification}
+    N2[Farm Maintenance]
+    N3[(Weed Removal)]
+    N4([Hydroponic System Management])
+    N5(Market Transportation)
+    N6([Weather Tracking])
+    N7[Pest Spraying]
+    N8[[Supply Chain to Retailers]]
+    N9(Packaging for Sale)
+    N10([Irrigation Scheduling])
+    N11[/Equipment Repair/]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Livestock Feeding
+        nest0_0(Produce Sorting)
+        nest0_1[Soil Nutrient Management]
+    end
+    subgraph Drone Scouting
+        nest1_0[[Forestry Management]]
+        nest1_1[[Seed Sowing]]
+        nest1_2[Food Processing]
+        nest1_3[(Grain Drying)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    nest0_0 -.-> nest0_1
+    N5 -.-> nest0_0
+    nest0_1 -.-> |sustains| N7
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N8 -.-> nest1_0
+    nest1_3 --> N9
+    N2 -.-> S0
+    S0 --> N11
+    S0 -.-> N10
+    N7 -.-> S1
+    S1 --> N9
+    S1 -.-> N11
+    N0 --> M0
+    N1 -.-> M0
+    M0 --> N4
+    N1 --> M1
+    N4 -.-> M1
+    M1 -.-> N6
+    N0 -.-> M2
+    N2 --> M2
+    M2 -.-> N4
+    style N0 fill:#F3E5F5,stroke:#AB47BC
+    style N1 fill:#F3E5F5,stroke:#AB47BC
+    style N2 fill:#FFDCD6,stroke:#FFB2A5
+    style N3 fill:#C8E6C9,stroke:#4CAF50
+    style N4 fill:#F3E5F5,stroke:#AB47BC
+    style N5 fill:#F3E5F5,stroke:#AB47BC
+    style N6 fill:#F3E5F5,stroke:#AB47BC
+    style N7 fill:#F3E5F5,stroke:#AB47BC
+    style N8 fill:#F3E5F5,stroke:#AB47BC
+    style N9 fill:#F3E5F5,stroke:#AB47BC
+    style N10 fill:#FFDCD6,stroke:#FFB2A5
+    style N11 fill:#C8E6C9,stroke:#4CAF50
+    style S0 fill:#F3E5F5,stroke:#AB47BC
+    style S1 fill:#C8E6C9,stroke:#4CAF50
+    style M0 fill:#F3E5F5,stroke:#AB47BC
+    style M1 fill:#F3E5F5,stroke:#AB47BC
+    style M2 fill:#C8E6C9,stroke:#4CAF50
+    style nest0_0 fill:#FFDCD6,stroke:#FFB2A5
+    style nest0_1 fill:#F3E5F5,stroke:#AB47BC
+    style nest1_0 fill:#F3E5F5,stroke:#AB47BC
+    style nest1_1 fill:#C8E6C9,stroke:#4CAF50
+    style nest1_2 fill:#F3E5F5,stroke:#AB47BC
+    style nest1_3 fill:#F3E5F5,stroke:#AB47BC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFB2A5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_82.txt b/train/mermaid/hard/mermaid_82.txt
new file mode 100644
index 0000000000000000000000000000000000000000..758ae63a701814b0efb49b4bdd054afc18e2b0fc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_82.txt
@@ -0,0 +1,34 @@
+<Farm Maintenance, connectedTo, Equipment Repair>
+<Farm Maintenance, connectedTo, Hydroponic System Management>
+<Farm Maintenance, connectedTo, Irrigation Scheduling>
+<Farm Maintenance, connectedTo, Weed Removal>
+<Food Processing, connectedTo, Grain Drying>
+<Food Processing, partOf, Drone Scouting>
+<Forestry Management, connectedTo, Seed Sowing>
+<Forestry Management, partOf, Drone Scouting>
+<Grain Drying, connectedTo, Packaging for Sale>
+<Grain Drying, partOf, Drone Scouting>
+<Hydroponic System Management, connectedTo, Market Transportation>
+<Hydroponic System Management, connectedTo, Weather Tracking>
+<Irrigation Scheduling, connectedTo, Equipment Repair>
+<Market Transportation, connectedTo, Produce Sorting>
+<Market Transportation, connectedTo, Weather Tracking>
+<Organic Certification, connectedTo, Farm Maintenance>
+<Organic Certification, connectedTo, Hydroponic System Management>
+<Organic Certification, connectedTo, Weather Tracking>
+<Packaging for Sale, connectedTo, Irrigation Scheduling>
+<Pest Spraying, connectedTo, Equipment Repair>
+<Pest Spraying, connectedTo, Packaging for Sale>
+<Pest Spraying, connectedTo, Supply Chain to Retailers>
+<Produce Sorting, connectedTo, Soil Nutrient Management>
+<Produce Sorting, partOf, Livestock Feeding>
+<Seed Sowing, connectedTo, Food Processing>
+<Seed Sowing, partOf, Drone Scouting>
+<Soil Nutrient Management, partOf, Livestock Feeding>
+<Soil Nutrient Management, sustains, Pest Spraying>
+<Supply Chain to Retailers, connectedTo, Forestry Management>
+<Supply Chain to Retailers, connectedTo, Packaging for Sale>
+<Weather Tracking, connectedTo, Pest Spraying>
+<Weed Removal, connectedTo, Hydroponic System Management>
+<start, connectedTo, Hydroponic System Management>
+<start, connectedTo, Organic Certification>
diff --git a/train/mermaid/hard/mermaid_821.mmd b/train/mermaid/hard/mermaid_821.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4b365ab00984bd1a91c0c2f1bccca263216e887b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_821.mmd
@@ -0,0 +1,146 @@
+graph LR
+    N0([start])
+    N1[(Data Storage and Retention)]
+    N2([Traffic Surveillance])
+    N3[(Video Analytics)]
+    N4(Thermal Imaging)
+    N5[GPS Tracking]
+    N6{Internet Traffic Monitoring}
+    N7[Physical Security Integration]
+    N8[[Mobile Phone Interception]]
+    N9[(Perimeter Security)]
+    N10[/Legal Compliance/]
+    N11[Network Monitoring]
+    N12([Night Vision Technology])
+    N13[Drone Surveillance]
+    N14(Environmental Monitoring)
+    N15[Real_time Alerts]
+    N16[Audio Surveillance]
+    N17[Wildlife Tracking]
+    N18[Data Collection]
+    N19([Pattern Recognition])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Remote Sensing
+        nest0_0[Behavioral Analytics]
+        nest0_1(Biometric Data Analysis)
+    end
+    subgraph Asset Tracking
+        nest1_0[(Cyber Surveillance)]
+        nest1_1([Public Space Monitoring])
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> |shares| N12
+    N12 -.-> |accesses| N13
+    N13 -.-> |deploys| N14
+    N14 -.-> N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 -.-> N18
+    N18 -.-> N19
+    nest0_0 --> nest0_1
+    N14 --> nest0_0
+    nest0_1 --> N2
+    nest1_0 -.-> nest1_1
+    N9 --> nest1_0
+    nest1_1 -.-> N8
+    N6 -.-> S0
+    S0 --> N18
+    S0 --> |searches| N14
+    S0 -.-> N15
+    N15 --> S1
+    S1 -.-> N17
+    S1 --> |monitors| N19
+    S1 -.-> N18
+    N0 -.-> S2
+    S2 --> N12
+    S2 -.-> N10
+    S2 -.-> N4
+    S2 --> N19
+    N15 -.-> M0
+    N6 --> M0
+    N8 --> M0
+    M0 --> N19
+    style N0 fill:#E8F0FF,stroke:#A2D0FF
+    style N1 fill:#D0EFEE,stroke:#73C6BC
+    style N2 fill:#E8F0FF,stroke:#A2D0FF
+    style N3 fill:#E8F0FF,stroke:#A2D0FF
+    style N4 fill:#E8F0FF,stroke:#A2D0FF
+    style N5 fill:#E8F0FF,stroke:#A2D0FF
+    style N6 fill:#DDCEDD,stroke:#AF56A6
+    style N7 fill:#D0EFEE,stroke:#73C6BC
+    style N8 fill:#DDCEDD,stroke:#AF56A6
+    style N9 fill:#E8F0FF,stroke:#A2D0FF
+    style N10 fill:#E8F0FF,stroke:#A2D0FF
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+    style M0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_0 fill:#E8F0FF,stroke:#A2D0FF
+    style nest0_1 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_0 fill:#D0EFEE,stroke:#73C6BC
+    style nest1_1 fill:#DDCEDD,stroke:#AF56A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
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+    linkStyle 41 stroke:#A2D0FF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_821.txt b/train/mermaid/hard/mermaid_821.txt
new file mode 100644
index 0000000000000000000000000000000000000000..ac2cda713e4503a349eb26e526ad831fff053b5d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_821.txt
@@ -0,0 +1,42 @@
+<Audio Surveillance, connectedTo, Wildlife Tracking>
+<Behavioral Analytics, connectedTo, Biometric Data Analysis>
+<Behavioral Analytics, partOf, Remote Sensing>
+<Biometric Data Analysis, connectedTo, Traffic Surveillance>
+<Biometric Data Analysis, partOf, Remote Sensing>
+<Cyber Surveillance, connectedTo, Public Space Monitoring>
+<Cyber Surveillance, partOf, Asset Tracking>
+<Data Collection, connectedTo, Pattern Recognition>
+<Data Storage and Retention, connectedTo, Traffic Surveillance>
+<Drone Surveillance, deploys, Environmental Monitoring>
+<Environmental Monitoring, connectedTo, Behavioral Analytics>
+<Environmental Monitoring, connectedTo, Real_time Alerts>
+<GPS Tracking, connectedTo, Internet Traffic Monitoring>
+<Internet Traffic Monitoring, connectedTo, Data Collection>
+<Internet Traffic Monitoring, connectedTo, Pattern Recognition>
+<Internet Traffic Monitoring, connectedTo, Physical Security Integration>
+<Internet Traffic Monitoring, connectedTo, Real_time Alerts>
+<Internet Traffic Monitoring, searches, Environmental Monitoring>
+<Legal Compliance, connectedTo, Network Monitoring>
+<Mobile Phone Interception, connectedTo, Pattern Recognition>
+<Mobile Phone Interception, connectedTo, Perimeter Security>
+<Network Monitoring, shares, Night Vision Technology>
+<Night Vision Technology, accesses, Drone Surveillance>
+<Perimeter Security, connectedTo, Cyber Surveillance>
+<Perimeter Security, connectedTo, Legal Compliance>
+<Physical Security Integration, connectedTo, Mobile Phone Interception>
+<Public Space Monitoring, connectedTo, Mobile Phone Interception>
+<Public Space Monitoring, partOf, Asset Tracking>
+<Real_time Alerts, connectedTo, Audio Surveillance>
+<Real_time Alerts, connectedTo, Data Collection>
+<Real_time Alerts, connectedTo, Pattern Recognition>
+<Real_time Alerts, connectedTo, Wildlife Tracking>
+<Real_time Alerts, monitors, Pattern Recognition>
+<Thermal Imaging, connectedTo, GPS Tracking>
+<Traffic Surveillance, connectedTo, Video Analytics>
+<Video Analytics, connectedTo, Thermal Imaging>
+<Wildlife Tracking, connectedTo, Data Collection>
+<start, connectedTo, Data Storage and Retention>
+<start, connectedTo, Legal Compliance>
+<start, connectedTo, Night Vision Technology>
+<start, connectedTo, Pattern Recognition>
+<start, connectedTo, Thermal Imaging>
diff --git a/train/mermaid/hard/mermaid_822.txt b/train/mermaid/hard/mermaid_822.txt
new file mode 100644
index 0000000000000000000000000000000000000000..413d2c82d172f9c286b923d26816f75310221fa3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_822.txt
@@ -0,0 +1,38 @@
+<Audio Surveillance, automates, Satellite Imaging>
+<Audio Surveillance, connectedTo, CCTV Monitoring>
+<Audio Surveillance, connectedTo, Cyber Surveillance>
+<Audio Surveillance, connectedTo, Data Collection>
+<Audio Surveillance, connectedTo, Environmental Monitoring>
+<Automated Threat Detection, optimizes, Environmental Monitoring>
+<Automated Threat Detection, partOf, Remote Sensing>
+<Biometric Data Analysis, connectedTo, Environmental Monitoring>
+<CCTV Monitoring, connectedTo, Biometric Data Analysis>
+<CCTV Monitoring, shares, Satellite Imaging>
+<Cyber Surveillance, connectedTo, Data Collection>
+<Cyber Surveillance, connectedTo, GPS Tracking>
+<Cyber Surveillance, connectedTo, Real_time Alerts>
+<Environmental Monitoring, connectedTo, Cyber Surveillance>
+<Environmental Monitoring, connectedTo, Satellite Imaging>
+<GPS Tracking, connectedTo, Data Collection>
+<GPS Tracking, connectedTo, Traffic Surveillance>
+<Mobile Phone Interception, connectedTo, Network Monitoring>
+<Mobile Phone Interception, partOf, Legal Compliance>
+<Network Monitoring, connectedTo, Biometric Data Analysis>
+<Network Monitoring, partOf, Legal Compliance>
+<Pattern Recognition, connectedTo, Mobile Phone Interception>
+<Pattern Recognition, partOf, Legal Compliance>
+<Perimeter Security, connectedTo, Audio Surveillance>
+<Perimeter Security, protects, Satellite Imaging>
+<Privacy Concerns Mitigation, notifies, Pattern Recognition>
+<Privacy Concerns Mitigation, partOf, Legal Compliance>
+<Real_time Alerts, connectedTo, Privacy Concerns Mitigation>
+<Real_time Alerts, connectedTo, Satellite Imaging>
+<Satellite Imaging, verifies, GPS Tracking>
+<Security Personnel Operations, connectedTo, Social Media Monitoring>
+<Security Personnel Operations, partOf, Remote Sensing>
+<Social Media Monitoring, connectedTo, Automated Threat Detection>
+<Social Media Monitoring, partOf, Remote Sensing>
+<Traffic Surveillance, connectedTo, Security Personnel Operations>
+<Traffic Surveillance, partOf, Remote Sensing>
+<Video Analytics, connectedTo, Cyber Surveillance>
+<Video Analytics, connectedTo, Perimeter Security>
diff --git a/train/mermaid/hard/mermaid_823.txt b/train/mermaid/hard/mermaid_823.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f909922e8184ad434bb391e42786af2542c984df
--- /dev/null
+++ b/train/mermaid/hard/mermaid_823.txt
@@ -0,0 +1,44 @@
+<Anomaly Detection, connectedTo, Behavioral Analytics>
+<Anomaly Detection, connectedTo, Ethical Guidelines>
+<Anomaly Detection, filters, Network Monitoring>
+<Asset Tracking, connectedTo, Mobile Phone Interception>
+<Asset Tracking, partOf, CCTV Monitoring>
+<Behavioral Analytics, connectedTo, Legal Compliance>
+<Biometric Data Analysis, connectedTo, Anomaly Detection>
+<Biometric Data Analysis, connectedTo, Behavioral Analytics>
+<Drone Surveillance, connectedTo, Behavioral Analytics>
+<Drone Surveillance, connectedTo, Traffic Surveillance>
+<Drone Surveillance, connectedTo, Wildlife Tracking>
+<Drone Surveillance, protects, Legal Compliance>
+<Environmental Monitoring, connectedTo, GPS Tracking>
+<Environmental Monitoring, connectedTo, Security Personnel Operations>
+<Ethical Guidelines, identifies, Asset Tracking>
+<Ethical Guidelines, partOf, CCTV Monitoring>
+<Facial Recognition Systems, connectedTo, Social Media Monitoring>
+<GPS Tracking, connectedTo, Pattern Recognition>
+<GPS Tracking, partOf, Perimeter Security>
+<Internet Traffic Monitoring, connectedTo, Thermal Imaging>
+<Internet Traffic Monitoring, partOf, Perimeter Security>
+<Legal Compliance, connectedTo, Environmental Monitoring>
+<Mobile Phone Interception, connectedTo, Public Space Monitoring>
+<Mobile Phone Interception, partOf, CCTV Monitoring>
+<Network Monitoring, connectedTo, Drone Surveillance>
+<Pattern Recognition, connectedTo, Internet Traffic Monitoring>
+<Pattern Recognition, partOf, Perimeter Security>
+<Predictive Policing, connectedTo, Traffic Surveillance>
+<Public Space Monitoring, connectedTo, Facial Recognition Systems>
+<Real_time Alerts, connectedTo, Anomaly Detection>
+<Real_time Alerts, connectedTo, Behavioral Analytics>
+<Real_time Alerts, connectedTo, Biometric Data Analysis>
+<Real_time Alerts, connectedTo, Predictive Policing>
+<Security Personnel Operations, connectedTo, Public Space Monitoring>
+<Security Personnel Operations, connectedTo, Social Media Monitoring>
+<Security Personnel Operations, connectedTo, Video Analytics>
+<Security Personnel Operations, retrieves, Wildlife Tracking>
+<Social Media Monitoring, connectedTo, Predictive Policing>
+<Thermal Imaging, connectedTo, Predictive Policing>
+<Thermal Imaging, partOf, Perimeter Security>
+<Video Analytics, connectedTo, Public Space Monitoring>
+<Wildlife Tracking, connectedTo, Video Analytics>
+<start, connectedTo, Anomaly Detection>
+<start, connectedTo, Real_time Alerts>
diff --git a/train/mermaid/hard/mermaid_825.txt b/train/mermaid/hard/mermaid_825.txt
new file mode 100644
index 0000000000000000000000000000000000000000..db13456cfa2456cc468592118e541be7dcba8cf5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_825.txt
@@ -0,0 +1,33 @@
+<Behavioral Science in Prevention, connectedTo, Police_Community Relations>
+<Behavioral Science in Prevention, partOf, Gang Intervention>
+<Burglary Prevention, connectedTo, Crisis Intervention>
+<Burglary Prevention, warns, Fraud Prevention>
+<Crime Data Analysis, connectedTo, Domestic Violence Prevention>
+<Crime Data Analysis, partOf, Gang Intervention>
+<Crisis Intervention, connectedTo, Rehabilitation Programs>
+<Domestic Violence Prevention, connectedTo, Situational Crime Prevention>
+<Domestic Violence Prevention, partOf, Gang Intervention>
+<Environmental Design, connectedTo, Restorative Justice>
+<Environmental Design, partOf, Hotspot Policing>
+<Fraud Prevention, connectedTo, Identity Theft Prevention>
+<Identity Theft Prevention, connectedTo, Situational Crime Prevention>
+<Neighborhood Watch Programs, connectedTo, Crisis Intervention>
+<Neighborhood Watch Programs, connectedTo, Rehabilitation Programs>
+<Neighborhood Watch Programs, connectedTo, Vehicle Theft Prevention>
+<Police_Community Relations, connectedTo, Crime Data Analysis>
+<Police_Community Relations, partOf, Gang Intervention>
+<Policy Development for Prevention, connectedTo, Robbery Prevention>
+<Policy Development for Prevention, connectedTo, Vehicle Theft Prevention>
+<Policy Development for Prevention, hotspots, Rehabilitation Programs>
+<Policy Development for Prevention, monitors, Crisis Intervention>
+<Rehabilitation Programs, connectedTo, Behavioral Science in Prevention>
+<Rehabilitation Programs, connectedTo, Vehicle Theft Prevention>
+<Reintegration Programs, connectedTo, Robbery Prevention>
+<Reintegration Programs, partOf, Hotspot Policing>
+<Restorative Justice, connectedTo, Reintegration Programs>
+<Restorative Justice, partOf, Hotspot Policing>
+<Robbery Prevention, connectedTo, Neighborhood Watch Programs>
+<Robbery Prevention, connectedTo, Technology for Prevention>
+<Situational Crime Prevention, connectedTo, Policy Development for Prevention>
+<Technology for Prevention, connectedTo, Environmental Design>
+<Technology for Prevention, partOf, Hotspot Policing>
diff --git a/train/mermaid/hard/mermaid_828.txt b/train/mermaid/hard/mermaid_828.txt
new file mode 100644
index 0000000000000000000000000000000000000000..de48e1c0f5b1f426f138e6d6df6fdb5c6a6f70fe
--- /dev/null
+++ b/train/mermaid/hard/mermaid_828.txt
@@ -0,0 +1,36 @@
+<CCTV Installation, connectedTo, Data Sharing Initiatives>
+<CCTV Installation, connectedTo, Vehicle Theft Prevention>
+<CCTV Installation, yes, Gang Intervention>
+<Crime Data Analysis, connectedTo, Sexual Assault Prevention>
+<Crime Data Analysis, partOf, Behavioral Science in Prevention>
+<Cybercrime Prevention, connectedTo, Data Sharing Initiatives>
+<Cybercrime Prevention, partOf, Target Hardening>
+<Data Sharing Initiatives, connectedTo, Fraud Prevention>
+<Data Sharing Initiatives, connectedTo, Policy Development for Prevention>
+<Data Sharing Initiatives, connectedTo, Security Lighting>
+<Drug Prevention Initiatives, connectedTo, Crime Data Analysis>
+<Drug Prevention Initiatives, partOf, Behavioral Science in Prevention>
+<Fraud Prevention, connectedTo, Public Awareness Campaigns>
+<Fraud Prevention, connectedTo, School Safety Programs>
+<Gang Intervention, connectedTo, Data Sharing Initiatives>
+<Gang Intervention, connectedTo, Mediation Services>
+<Identity Theft Prevention, connectedTo, Cybercrime Prevention>
+<Identity Theft Prevention, partOf, Target Hardening>
+<Law Enforcement Training, connectedTo, Security Lighting>
+<Mediation Services, connectedTo, Drug Prevention Initiatives>
+<Mediation Services, partOf, Behavioral Science in Prevention>
+<Policy Development for Prevention, connectedTo, Situational Crime Prevention>
+<Public Awareness Campaigns, connectedTo, Identity Theft Prevention>
+<Public Awareness Campaigns, partOf, Target Hardening>
+<School Safety Programs, connectedTo, Policy Development for Prevention>
+<School Safety Programs, connectedTo, Situational Crime Prevention>
+<School Safety Programs, connectedTo, Vehicle Theft Prevention>
+<School Safety Programs, no, Security Lighting>
+<Sexual Assault Prevention, connectedTo, CCTV Installation>
+<Sexual Assault Prevention, no, Data Sharing Initiatives>
+<Sexual Assault Prevention, no, Law Enforcement Training>
+<Situational Crime Prevention, connectedTo, Vehicle Theft Prevention>
+<Vehicle Theft Prevention, connectedTo, Law Enforcement Training>
+<start, connectedTo, Law Enforcement Training>
+<start, no, Data Sharing Initiatives>
+<start, no, Sexual Assault Prevention>
diff --git a/train/mermaid/hard/mermaid_829.mmd b/train/mermaid/hard/mermaid_829.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..851818a1c0f90eaac3b2337e7af4d076a6cd27d2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_829.mmd
@@ -0,0 +1,152 @@
+graph LR
+    N0([start])
+    N1[Crime Prevention Through Education]
+    N2{Police_Community Relations}
+    N3{Vehicle Theft Prevention}
+    N4(Neighborhood Watch Programs)
+    N5(Community Policing)
+    N6([Law Enforcement Training])
+    N7[[Public Awareness Campaigns]]
+    N8(Crime Data Analysis)
+    N9(Burglary Prevention)
+    N10{Identity Theft Prevention}
+    N11[Deterrence Strategies]
+    N12{Robbery Prevention}
+    N13[Sexual Assault Prevention]
+    N14[[Cybercrime Prevention]]
+    N15[[Behavioral Science in Prevention]]
+    N16[[Gang Intervention]]
+    N17{School Safety Programs}
+    N18([Victim Support Services])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Security Lighting
+        nest0_0(Crisis Intervention)
+        nest0_1(Situational Crime Prevention)
+        nest0_2[[Mediation Services]]
+        nest0_3[Gun Violence Prevention]
+    end
+    subgraph Environmental Design
+        nest1_0{Technology for Prevention}
+        nest1_1[/Early Intervention Programs/]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> |supports_victims| N14
+    N14 --> |laws_enforces| N15
+    N15 --> N16
+    N16 -.-> N17
+    N17 --> N18
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N16 -.-> nest0_0
+    nest0_3 --> N8
+    nest1_0 -.-> nest1_1
+    N17 -.-> nest1_0
+    nest1_1 --> N8
+    N1 -.-> S0
+    S0 --> N17
+    S0 -.-> N18
+    S0 -.-> N12
+    N11 -.-> S1
+    S1 --> N18
+    S1 -.-> N13
+    S1 --> N14
+    S1 -.-> N15
+    N4 --> M0
+    N0 --> M0
+    N9 -.-> M0
+    N2 --> M0
+    M0 --> N11
+    N4 --> M1
+    N12 -.-> M1
+    N7 -.-> M1
+    M1 -.-> N18
+    style N0 fill:#DDCEDD,stroke:#AF56A6
+    style N1 fill:#C2E8E6,stroke:#61CAC3
+    style N2 fill:#C2E8E6,stroke:#61CAC3
+    style N3 fill:#FFE0B2,stroke:#FF9800
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+    style N15 fill:#C2E8E6,stroke:#61CAC3
+    style N16 fill:#FFE0B2,stroke:#FF9800
+    style N17 fill:#FFE0B2,stroke:#FF9800
+    style N18 fill:#FFE0B2,stroke:#FF9800
+    style S0 fill:#C2E8E6,stroke:#61CAC3
+    style S1 fill:#DDCEDD,stroke:#AF56A6
+    style M0 fill:#C2E8E6,stroke:#61CAC3
+    style M1 fill:#FFE0B2,stroke:#FF9800
+    style nest0_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest0_1 fill:#C2E8E6,stroke:#61CAC3
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+    style nest1_0 fill:#C2E8E6,stroke:#61CAC3
+    style nest1_1 fill:#DDCEDD,stroke:#AF56A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
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+    linkStyle 41 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#AF56A6,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_83.txt b/train/mermaid/hard/mermaid_83.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4bfe63aeb07d4e6d38dfa88aebbe046b5354e5e3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_83.txt
@@ -0,0 +1,47 @@
+<Agricultural Research, connectedTo, Subsidy Application>
+<Animal Health Monitoring, connectedTo, Supply Chain to Retailers>
+<Animal Health Monitoring, partOf, Automated Milking>
+<Barn Cleaning, connectedTo, Drone Scouting>
+<Barn Cleaning, connectedTo, Farm Maintenance>
+<Drone Scouting, connectedTo, end>
+<Equipment Repair, connectedTo, Weather Tracking>
+<Farm Maintenance, connectedTo, Traceability System>
+<Farm Maintenance, connectedTo, Yield Prediction>
+<Fertilizer Application, connectedTo, Drone Scouting>
+<Fertilizer Application, connectedTo, Precision Farming>
+<Fertilizer Application, connectedTo, Storage>
+<Forestry Management, connectedTo, Drone Scouting>
+<Forestry Management, connectedTo, Yield Prediction>
+<Forestry Management, connectedTo, end>
+<Harvesting, connectedTo, Weather Tracking>
+<Harvesting, connectedTo, Yield Prediction>
+<Harvesting, no, Drone Scouting>
+<Harvesting, no, Equipment Repair>
+<Hydroponic System Management, connectedTo, end>
+<Hydroponic System Management, partOf, Automated Milking>
+<Livestock Feeding, connectedTo, Weed Removal>
+<Livestock Feeding, partOf, Seedling Transplanting>
+<Market Transportation, connectedTo, Drone Scouting>
+<Market Transportation, yes, Soil Nutrient Management>
+<Pest Spraying, connectedTo, Hydroponic System Management>
+<Pest Spraying, partOf, Automated Milking>
+<Precision Farming, connectedTo, Barn Cleaning>
+<Soil Nutrient Management, connectedTo, Forestry Management>
+<Soil Nutrient Management, no, Yield Prediction>
+<Soil Testing, connectedTo, Market Transportation>
+<Storage, connectedTo, Precision Farming>
+<Storage, connectedTo, Yield Prediction>
+<Subsidy Application, connectedTo, Animal Health Monitoring>
+<Subsidy Application, connectedTo, Harvesting>
+<Subsidy Application, yes, Precision Farming>
+<Supply Chain to Retailers, connectedTo, Pest Spraying>
+<Supply Chain to Retailers, partOf, Automated Milking>
+<Traceability System, connectedTo, Livestock Feeding>
+<Traceability System, connectedTo, Soil Testing>
+<Weather Tracking, connectedTo, Fertilizer Application>
+<Weather Tracking, connectedTo, Precision Farming>
+<Weed Removal, partOf, Seedling Transplanting>
+<Weed Removal, yes, Soil Testing>
+<Yield Prediction, connectedTo, Drone Scouting>
+<start, connectedTo, Agricultural Research>
+<start, no, Precision Farming>
diff --git a/train/mermaid/hard/mermaid_832.mmd b/train/mermaid/hard/mermaid_832.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8645581dca0e14492bf7fd4a007a45f0320a4356
--- /dev/null
+++ b/train/mermaid/hard/mermaid_832.mmd
@@ -0,0 +1,100 @@
+graph LR
+    N0([start])
+    N1{Vehicle Theft Prevention}
+    N2[(Environmental Design)]
+    N3(Cybercrime Prevention)
+    N4(Crime Prevention Through Education)
+    N5(Youth Programs)
+    N6[Policy Development for Prevention]
+    N7[(Technology for Prevention)]
+    N8[Crime Data Analysis]
+    N9(Fraud Prevention)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    subgraph Victim Support Services
+        nest0_0(Mediation Services)
+        nest0_1[Gang Intervention]
+    end
+    subgraph Domestic Violence Prevention
+        nest1_0(Public Awareness Campaigns)
+        nest1_1([Law Enforcement Training])
+        nest1_2{Reintegration Programs}
+        nest1_3(CCTV Installation)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> |no| N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> |no| N8
+    N8 -.-> N9
+    nest0_0 -.-> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 -.-> N8
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N8 -.-> nest1_0
+    nest1_3 -.-> N1
+    N2 -.-> S0
+    S0 --> N5
+    S0 --> N6
+    S0 -.-> N9
+    S0 -.-> N7
+    N1 --> S1
+    S1 -.-> N4
+    S1 -.-> N5
+    S1 -.-> N3
+    S1 --> N7
+    N2 -.-> S2
+    S2 --> N7
+    S2 -.-> N5
+    S2 --> N6
+    N6 --> M0
+    N7 -.-> |no| M0
+    N4 -.-> M0
+    M0 --> N9
+    style S0 fill:#FFF8E1,stroke:#FFD54F
+    style S1 fill:#ECF0FD,stroke:#B8C0F5
+    style S2 fill:#FFFDE7,stroke:#FBC02D
+    style M0 fill:#ECF0FD,stroke:#B8C0F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#B8C0F5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FBC02D,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_837.txt b/train/mermaid/hard/mermaid_837.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7c22d2f8cad3a0a58b684f83e23658477dd6136f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_837.txt
@@ -0,0 +1,32 @@
+<Camera Trap Deployment, connectedTo, Data Management for Conservation>
+<Climate Change Adaptation for Wildlife, connectedTo, GIS Mapping for Habitats>
+<Community Engagement, connectedTo, Camera Trap Deployment>
+<Community Engagement, connectedTo, Forestry Practices for Conservation>
+<Community Engagement, connectedTo, Grassland Conservation>
+<Community Engagement, connectedTo, Invasive Species Control>
+<Community Engagement, connectedTo, Research and Development in Conservation>
+<Data Management for Conservation, connectedTo, GIS Mapping for Habitats>
+<Data Management for Conservation, connectedTo, Species Monitoring>
+<Ecological Survey, connectedTo, Forestry Practices for Conservation>
+<Ecological Survey, partOf, Conservation Education>
+<GIS Mapping for Habitats, connectedTo, Marine Conservation>
+<Genetic Diversity Analysis, connectedTo, Camera Trap Deployment>
+<Genetic Diversity Analysis, connectedTo, Grassland Conservation>
+<Grassland Conservation, connectedTo, Invasive Species Control>
+<International Treaties Enforcement, connectedTo, Protected Area Management>
+<International Treaties Enforcement, partOf, Ecotourism Management>
+<Invasive Species Control, connectedTo, Camera Trap Deployment>
+<Marine Conservation, connectedTo, Forestry Practices for Conservation>
+<Protected Area Management, connectedTo, Camera Trap Deployment>
+<Protected Area Management, connectedTo, GIS Mapping for Habitats>
+<Protected Area Management, connectedTo, Genetic Diversity Analysis>
+<Protected Area Management, connectedTo, Translocation of Species>
+<Protected Area Management, connectedTo, Wetland Restoration>
+<Protected Area Management, partners, Forestry Practices for Conservation>
+<Research and Development in Conservation, connectedTo, GIS Mapping for Habitats>
+<Research and Development in Conservation, connectedTo, Protected Area Management>
+<Species Monitoring, connectedTo, Climate Change Adaptation for Wildlife>
+<Translocation of Species, connectedTo, International Treaties Enforcement>
+<Translocation of Species, partOf, Ecotourism Management>
+<Wetland Restoration, connectedTo, Ecological Survey>
+<Wetland Restoration, partOf, Conservation Education>
diff --git a/train/mermaid/hard/mermaid_840.txt b/train/mermaid/hard/mermaid_840.txt
new file mode 100644
index 0000000000000000000000000000000000000000..24a00c202378be31c554228cdd43bce2bdf318b4
--- /dev/null
+++ b/train/mermaid/hard/mermaid_840.txt
@@ -0,0 +1,35 @@
+<Camera Trap Deployment, connectedTo, Disease Surveillance>
+<Carbon Sequestration in Habitats, connectedTo, Conservation Genetics>
+<Carbon Sequestration in Habitats, connectedTo, Ecosystem Services Valuation>
+<Conservation Genetics, no, Camera Trap Deployment>
+<Data Management for Conservation, connectedTo, Fundraising for Conservation>
+<Data Management for Conservation, partOf, Population Dynamics Study>
+<Disease Surveillance, connectedTo, Freshwater Conservation>
+<Ecosystem Services Valuation, connectedTo, Translocation of Species>
+<Ecosystem Services Valuation, partOf, Human_Wildlife Conflict Mitigation>
+<Ecotourism Management, connectedTo, Marine Conservation>
+<Forestry Practices for Conservation, connectedTo, Freshwater Conservation>
+<Forestry Practices for Conservation, partOf, Human_Wildlife Conflict Mitigation>
+<Fundraising for Conservation, connectedTo, Camera Trap Deployment>
+<Fundraising for Conservation, partOf, Population Dynamics Study>
+<Genetic Diversity Analysis, connectedTo, Data Management for Conservation>
+<Genetic Diversity Analysis, yes, Pollution Impact Assessment>
+<Habitat Restoration, connectedTo, Forestry Practices for Conservation>
+<Habitat Restoration, partOf, Human_Wildlife Conflict Mitigation>
+<Invasive Species Control, connectedTo, Camera Trap Deployment>
+<Invasive Species Control, connectedTo, Conservation Genetics>
+<Invasive Species Control, connectedTo, Ecotourism Management>
+<Invasive Species Control, connectedTo, Genetic Diversity Analysis>
+<Invasive Species Control, connectedTo, Pollution Impact Assessment>
+<Marine Conservation, connectedTo, Carbon Sequestration in Habitats>
+<Marine Conservation, connectedTo, Conservation Genetics>
+<Marine Conservation, connectedTo, Disease Surveillance>
+<Marine Conservation, no, Freshwater Conservation>
+<Pollution Impact Assessment, connectedTo, Conservation Genetics>
+<Pollution Impact Assessment, connectedTo, Ecotourism Management>
+<Translocation of Species, connectedTo, Habitat Restoration>
+<Translocation of Species, partOf, Human_Wildlife Conflict Mitigation>
+<start, connectedTo, Conservation Genetics>
+<start, connectedTo, Disease Surveillance>
+<start, connectedTo, Ecotourism Management>
+<start, connectedTo, Invasive Species Control>
diff --git a/train/mermaid/hard/mermaid_841.txt b/train/mermaid/hard/mermaid_841.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0e7feeefbcbe9883f4979d7d54cf47c8daf82423
--- /dev/null
+++ b/train/mermaid/hard/mermaid_841.txt
@@ -0,0 +1,31 @@
+<Chemical Oceanography, connectedTo, Polar Oceanography>
+<Chemical Oceanography, partOf, Ocean Temperature Sensing>
+<Data Visualization, connectedTo, Marine Ecosystem Health>
+<Fisheries Management, connectedTo, Physical Oceanography>
+<Fisheries Management, connectedTo, Sea Level Monitoring>
+<Marine Ecosystem Health, connectedTo, Marine Remote Sensing>
+<Marine Ecosystem Health, connectedTo, Physical Oceanography>
+<Marine Remote Sensing, connectedTo, Climate Change Impact Study>
+<Marine Remote Sensing, connectedTo, Fisheries Management>
+<Marine Remote Sensing, connectedTo, Physical Oceanography>
+<Marine Remote Sensing, connectedTo, Tsunami Prediction>
+<Ocean Current Measurement, connectedTo, Underwater Acoustics>
+<Ocean Modeling, connectedTo, Marine Remote Sensing>
+<Ocean Modeling, partOf, Buoy Deployment>
+<Physical Oceanography, connectedTo, Tsunami Prediction>
+<Polar Oceanography, connectedTo, Ocean Current Measurement>
+<Polar Oceanography, connectedTo, Physical Oceanography>
+<Satellite Oceanography, connectedTo, Ocean Modeling>
+<Satellite Oceanography, partOf, Buoy Deployment>
+<Sea Level Monitoring, partOf, Ocean Temperature Sensing>
+<Sea Level Monitoring, temperature, Chemical Oceanography>
+<Sediment Analysis, connectedTo, Climate Change Impact Study>
+<Sediment Analysis, connectedTo, Data Visualization>
+<Sediment Analysis, connectedTo, Marine Remote Sensing>
+<Sediment Analysis, connectedTo, Physical Oceanography>
+<Tsunami Prediction, connectedTo, Climate Change Impact Study>
+<Underwater Acoustics, connectedTo, Physical Oceanography>
+<Underwater Acoustics, connectedTo, Sediment Analysis>
+<Underwater Acoustics, surveys, Satellite Oceanography>
+<start, connectedTo, Physical Oceanography>
+<start, connectedTo, Polar Oceanography>
diff --git a/train/mermaid/hard/mermaid_842.mmd b/train/mermaid/hard/mermaid_842.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8999702230ed30a0d4b4b72c535324aaace3de0a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_842.mmd
@@ -0,0 +1,106 @@
+graph TD
+    N0([start])
+    N1[/Buoy Deployment/]
+    N2([Chemical Oceanography])
+    N3([Data Visualization])
+    N4([Marine Remote Sensing])
+    N5[Ocean Current Measurement]
+    N6[Marine Life Observation]
+    N7(Ocean Renewable Energy)
+    N8[/Ocean Floor Mapping/]
+    N9[/Biological Oceanography/]
+    N10[Marine Ecosystem Health]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Tsunami Prediction
+        nest0_0([Marine Geology])
+        nest0_1{Salinity Measurement}
+        nest0_2(Marine Biodiversity Assessment)
+    end
+    subgraph Ocean Drilling Programs
+        nest1_0([Acoustic Oceanography])
+        nest1_1(Physical Oceanography)
+        nest1_2[(Coastal Zone Management)]
+        nest1_3(Deep_Sea Exploration)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N4 -.-> nest0_0
+    nest0_2 --> N5
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N3 --> nest1_0
+    nest1_3 --> N8
+    N5 -.-> S0
+    S0 --> N7
+    S0 --> N8
+    N7 --> S1
+    S1 -.-> |no| N10
+    S1 --> N9
+    N3 -.-> S2
+    S2 --> N5
+    S2 --> N8
+    S2 --> N6
+    N1 -.-> M0
+    N2 --> M0
+    N0 --> |yes| M0
+    M0 --> N4
+    N6 -.-> M1
+    N2 --> M1
+    M1 --> N8
+    style S0 fill:#FFDAB9,stroke:#FFC085
+    style S1 fill:#B2EBF2,stroke:#00BCD4
+    style S2 fill:#B2EBF2,stroke:#00BCD4
+    style M0 fill:#B2EBF2,stroke:#00BCD4
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFC085,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF8A65,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_842.txt b/train/mermaid/hard/mermaid_842.txt
new file mode 100644
index 0000000000000000000000000000000000000000..78b546b3ca3c365a785c9e049fb07667911feb68
--- /dev/null
+++ b/train/mermaid/hard/mermaid_842.txt
@@ -0,0 +1,38 @@
+<Acoustic Oceanography, connectedTo, Physical Oceanography>
+<Acoustic Oceanography, partOf, Ocean Drilling Programs>
+<Biological Oceanography, connectedTo, Marine Ecosystem Health>
+<Buoy Deployment, connectedTo, Chemical Oceanography>
+<Buoy Deployment, connectedTo, Marine Remote Sensing>
+<Chemical Oceanography, connectedTo, Data Visualization>
+<Chemical Oceanography, connectedTo, Marine Remote Sensing>
+<Chemical Oceanography, connectedTo, Ocean Floor Mapping>
+<Coastal Zone Management, connectedTo, Deep_Sea Exploration>
+<Coastal Zone Management, partOf, Ocean Drilling Programs>
+<Data Visualization, connectedTo, Acoustic Oceanography>
+<Data Visualization, connectedTo, Marine Life Observation>
+<Data Visualization, connectedTo, Marine Remote Sensing>
+<Data Visualization, connectedTo, Ocean Current Measurement>
+<Data Visualization, connectedTo, Ocean Floor Mapping>
+<Deep_Sea Exploration, connectedTo, Ocean Floor Mapping>
+<Deep_Sea Exploration, partOf, Ocean Drilling Programs>
+<Marine Biodiversity Assessment, connectedTo, Ocean Current Measurement>
+<Marine Biodiversity Assessment, partOf, Tsunami Prediction>
+<Marine Geology, connectedTo, Salinity Measurement>
+<Marine Geology, partOf, Tsunami Prediction>
+<Marine Life Observation, connectedTo, Ocean Floor Mapping>
+<Marine Life Observation, connectedTo, Ocean Renewable Energy>
+<Marine Remote Sensing, connectedTo, Marine Geology>
+<Marine Remote Sensing, connectedTo, Ocean Current Measurement>
+<Ocean Current Measurement, connectedTo, Marine Life Observation>
+<Ocean Current Measurement, connectedTo, Ocean Floor Mapping>
+<Ocean Current Measurement, connectedTo, Ocean Renewable Energy>
+<Ocean Floor Mapping, connectedTo, Biological Oceanography>
+<Ocean Renewable Energy, connectedTo, Biological Oceanography>
+<Ocean Renewable Energy, connectedTo, Ocean Floor Mapping>
+<Ocean Renewable Energy, no, Marine Ecosystem Health>
+<Physical Oceanography, connectedTo, Coastal Zone Management>
+<Physical Oceanography, partOf, Ocean Drilling Programs>
+<Salinity Measurement, connectedTo, Marine Biodiversity Assessment>
+<Salinity Measurement, partOf, Tsunami Prediction>
+<start, connectedTo, Buoy Deployment>
+<start, yes, Marine Remote Sensing>
diff --git a/train/mermaid/hard/mermaid_843.mmd b/train/mermaid/hard/mermaid_843.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6d2fe48c49a6a9863d965e1c78917ef6ab2abd04
--- /dev/null
+++ b/train/mermaid/hard/mermaid_843.mmd
@@ -0,0 +1,140 @@
+graph RL
+    N0([start])
+    N1[/Ocean Drilling Programs/]
+    N2(Underwater Acoustics)
+    N3[(Ocean Data Archiving)]
+    N4{Marine Remote Sensing}
+    N5[[Marine Life Observation]]
+    N6[[ROV or AUV Operations]]
+    N7[(Seabed Resource Exploration)]
+    N8(Ocean Temperature Sensing)
+    N9(Buoy Deployment)
+    N10[[Ocean Renewable Energy]]
+    N11([Marine Biodiversity Assessment])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Climate Change Impact Study
+        nest0_0(Ocean Floor Mapping)
+        nest0_1(Satellite Oceanography)
+        nest0_2[(Ocean Acidification Research)]
+        nest0_3[[Acoustic Oceanography]]
+    end
+    subgraph Tsunami Prediction
+        nest1_0([Coastal Zone Management])
+        nest1_1{Fisheries Management}
+        nest1_2[/Marine Protected Area Planning/]
+        nest1_3[Ocean Current Measurement]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 --> nest0_3
+    N3 --> nest0_0
+    nest0_3 -.-> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N2 -.-> nest1_0
+    nest1_3 --> N8
+    N4 -.-> S0
+    S0 -.-> N10
+    S0 --> N11
+    S0 --> N7
+    N6 -.-> S1
+    S1 -.-> N9
+    S1 -.-> N11
+    S1 --> N8
+    N0 -.-> M0
+    N3 -.-> M0
+    N1 --> M0
+    M0 -.-> N5
+    N8 -.-> M1
+    N4 -.-> M1
+    N1 --> M1
+    N7 -.-> M1
+    M1 -.-> N10
+    N9 -.-> M2
+    N7 -.-> M2
+    N6 -.-> M2
+    M2 --> N11
+    style N0 fill:#DED7F0,stroke:#A188DB
+    style N1 fill:#DED7F0,stroke:#A188DB
+    style N2 fill:#FFFDE0,stroke:#FFF8A6
+    style N3 fill:#DED7F0,stroke:#A188DB
+    style N4 fill:#FFFDE0,stroke:#FFF8A6
+    style N5 fill:#FFFDE0,stroke:#FFF8A6
+    style N6 fill:#FFFDE0,stroke:#FFF8A6
+    style N7 fill:#DED7F0,stroke:#A188DB
+    style N8 fill:#DED7F0,stroke:#A188DB
+    style N9 fill:#FFFDE0,stroke:#FFF8A6
+    style N10 fill:#DED7F0,stroke:#A188DB
+    style N11 fill:#FFFDE0,stroke:#FFF8A6
+    style S0 fill:#DED7F0,stroke:#A188DB
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style M0 fill:#FFFDE0,stroke:#FFF8A6
+    style M1 fill:#FAEBF3,stroke:#F7BEE0
+    style M2 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_1 fill:#DED7F0,stroke:#A188DB
+    style nest0_2 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_3 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_2 fill:#DED7F0,stroke:#A188DB
+    style nest1_3 fill:#FFFDE0,stroke:#FFF8A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A188DB,stroke-width:2px,fill:none;
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+    linkStyle 38 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#A188DB,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_843.txt b/train/mermaid/hard/mermaid_843.txt
new file mode 100644
index 0000000000000000000000000000000000000000..01266649bfcfa9e4ac49ecac6ef213062fffa095
--- /dev/null
+++ b/train/mermaid/hard/mermaid_843.txt
@@ -0,0 +1,43 @@
+<Acoustic Oceanography, connectedTo, Marine Remote Sensing>
+<Acoustic Oceanography, partOf, Climate Change Impact Study>
+<Buoy Deployment, connectedTo, Marine Biodiversity Assessment>
+<Buoy Deployment, connectedTo, Ocean Renewable Energy>
+<Coastal Zone Management, connectedTo, Fisheries Management>
+<Coastal Zone Management, partOf, Tsunami Prediction>
+<Fisheries Management, connectedTo, Marine Protected Area Planning>
+<Fisheries Management, partOf, Tsunami Prediction>
+<Marine Life Observation, connectedTo, ROV or AUV Operations>
+<Marine Protected Area Planning, connectedTo, Ocean Current Measurement>
+<Marine Protected Area Planning, partOf, Tsunami Prediction>
+<Marine Remote Sensing, connectedTo, Marine Biodiversity Assessment>
+<Marine Remote Sensing, connectedTo, Marine Life Observation>
+<Marine Remote Sensing, connectedTo, Ocean Renewable Energy>
+<Marine Remote Sensing, connectedTo, Seabed Resource Exploration>
+<Ocean Acidification Research, connectedTo, Acoustic Oceanography>
+<Ocean Acidification Research, partOf, Climate Change Impact Study>
+<Ocean Current Measurement, connectedTo, Ocean Temperature Sensing>
+<Ocean Current Measurement, partOf, Tsunami Prediction>
+<Ocean Data Archiving, connectedTo, Marine Life Observation>
+<Ocean Data Archiving, connectedTo, Marine Remote Sensing>
+<Ocean Data Archiving, connectedTo, Ocean Floor Mapping>
+<Ocean Drilling Programs, connectedTo, Marine Life Observation>
+<Ocean Drilling Programs, connectedTo, Ocean Renewable Energy>
+<Ocean Drilling Programs, connectedTo, Underwater Acoustics>
+<Ocean Floor Mapping, connectedTo, Satellite Oceanography>
+<Ocean Floor Mapping, partOf, Climate Change Impact Study>
+<Ocean Renewable Energy, connectedTo, Marine Biodiversity Assessment>
+<Ocean Temperature Sensing, connectedTo, Buoy Deployment>
+<Ocean Temperature Sensing, connectedTo, Ocean Renewable Energy>
+<ROV or AUV Operations, connectedTo, Buoy Deployment>
+<ROV or AUV Operations, connectedTo, Marine Biodiversity Assessment>
+<ROV or AUV Operations, connectedTo, Ocean Temperature Sensing>
+<ROV or AUV Operations, connectedTo, Seabed Resource Exploration>
+<Satellite Oceanography, connectedTo, Ocean Acidification Research>
+<Satellite Oceanography, partOf, Climate Change Impact Study>
+<Seabed Resource Exploration, connectedTo, Marine Biodiversity Assessment>
+<Seabed Resource Exploration, connectedTo, Ocean Renewable Energy>
+<Seabed Resource Exploration, connectedTo, Ocean Temperature Sensing>
+<Underwater Acoustics, connectedTo, Coastal Zone Management>
+<Underwater Acoustics, connectedTo, Ocean Data Archiving>
+<start, connectedTo, Marine Life Observation>
+<start, connectedTo, Ocean Drilling Programs>
diff --git a/train/mermaid/hard/mermaid_845.mmd b/train/mermaid/hard/mermaid_845.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fcc66b7826033dad2c9d2579a33ccc32d0facad2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_845.mmd
@@ -0,0 +1,156 @@
+graph RL
+    N0([Data Visualization])
+    N1[[Ocean Modeling]]
+    N2{Marine Hazards Assessment}
+    N3[[Marine Protected Area Planning]]
+    N4[/Sediment Analysis/]
+    N5[(Underwater Acoustics)]
+    N6{Ocean Drilling Programs}
+    N7[Marine Biodiversity Assessment]
+    N8(Ocean Renewable Energy)
+    N9(Marine Geology)
+    N10[(Deep_Sea Exploration)]
+    N11[[Hydrothermal Vent Exploration]]
+    N12(Climate Change Impact Study)
+    N13([Fisheries Management])
+    N14[(Biological Oceanography)]
+    N15([Acoustic Oceanography])
+    N16{Ocean Floor Mapping}
+    N17[/Ocean Carbon Cycle/]
+    N18{Marine Life Observation}
+    N19(Tsunami Prediction)
+    N20[/Coastal Zone Management/]
+    N21([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Marine Remote Sensing
+        nest0_0[[Marine Ecosystem Health]]
+        nest0_1[Marine Pollution Monitoring]
+    end
+    subgraph Ocean Acidification Research
+        nest1_0(Satellite Oceanography)
+        nest1_1(Coastal Erosion Research)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    N16 --> N17
+    N17 -.-> N18
+    N18 --> N19
+    N19 -.-> N20
+    N20 --> N21
+    nest0_0 -.-> nest0_1
+    N19 -.-> nest0_0
+    nest0_1 --> N19
+    nest1_0 -.-> nest1_1
+    N20 -.-> nest1_0
+    nest1_1 --> N14
+    N7 -.-> S0
+    S0 -.-> N17
+    S0 --> N11
+    S0 --> N15
+    S0 -.-> N16
+    N6 --> S1
+    S1 --> N9
+    S1 -.-> N21
+    S1 --> N8
+    S1 -.-> N15
+    N1 --> M0
+    N2 --> M0
+    N0 --> M0
+    M0 -.-> N4
+    N1 --> M1
+    N0 -.-> M1
+    N2 -.-> M1
+    M1 --> N7
+    style N0 fill:#FFFDE7,stroke:#FBC02D
+    style N1 fill:#F8BBD0,stroke:#E91E63
+    style N2 fill:#E8EAF6,stroke:#5C6BC0
+    style N3 fill:#FFFDE7,stroke:#FBC02D
+    style N4 fill:#E8EAF6,stroke:#5C6BC0
+    style N5 fill:#FFFDE7,stroke:#FBC02D
+    style N6 fill:#F8BBD0,stroke:#E91E63
+    style N7 fill:#F8BBD0,stroke:#E91E63
+    style N8 fill:#E8EAF6,stroke:#5C6BC0
+    style N9 fill:#F8BBD0,stroke:#E91E63
+    style N10 fill:#E8EAF6,stroke:#5C6BC0
+    style N11 fill:#E8EAF6,stroke:#5C6BC0
+    style N12 fill:#E8EAF6,stroke:#5C6BC0
+    style N13 fill:#F8BBD0,stroke:#E91E63
+    style N14 fill:#FFFDE7,stroke:#FBC02D
+    style N15 fill:#FFFDE7,stroke:#FBC02D
+    style N16 fill:#F8BBD0,stroke:#E91E63
+    style N17 fill:#E8EAF6,stroke:#5C6BC0
+    style N18 fill:#F8BBD0,stroke:#E91E63
+    style N19 fill:#FFFDE7,stroke:#FBC02D
+    style N20 fill:#E8EAF6,stroke:#5C6BC0
+    style N21 fill:#F8BBD0,stroke:#E91E63
+    style S0 fill:#FFFDE7,stroke:#FBC02D
+    style S1 fill:#E8EAF6,stroke:#5C6BC0
+    style M0 fill:#FFFDE7,stroke:#FBC02D
+    style M1 fill:#F8BBD0,stroke:#E91E63
+    style nest0_0 fill:#F8BBD0,stroke:#E91E63
+    style nest0_1 fill:#E8EAF6,stroke:#5C6BC0
+    style nest1_0 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_1 fill:#E8EAF6,stroke:#5C6BC0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FBC02D,stroke-width:2px,fill:none;
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+    linkStyle 28 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#5C6BC0,stroke-width:2px,fill:none;
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+    linkStyle 35 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_846.mmd b/train/mermaid/hard/mermaid_846.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..0391796df15e0db8a9b691c7415c13b54fbb5dee
--- /dev/null
+++ b/train/mermaid/hard/mermaid_846.mmd
@@ -0,0 +1,142 @@
+graph RL
+    N0([Ocean Current Measurement])
+    N1[/Sea Level Monitoring/]
+    N2[/Physical Oceanography/]
+    N3[/Ocean Data Archiving/]
+    N4[[Chemical Oceanography]]
+    N5[(Satellite Oceanography)]
+    N6([Biological Oceanography])
+    N7[Fisheries Management]
+    N8{Coastal Zone Management}
+    N9{Coral Reef Monitoring}
+    N10{ROV or AUV Operations}
+    N11[/Ocean Temperature Sensing/]
+    N12[Buoy Deployment]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Ocean Carbon Cycle
+        nest0_0([Hydrothermal Vent Exploration])
+        nest0_1[/Marine Life Observation/]
+    end
+    subgraph Climate Change Impact Study
+        nest1_0[Marine Pollution Monitoring]
+        nest1_1(Ocean Drilling Programs)
+        nest1_2[(Ocean Floor Mapping)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    nest0_0 --> nest0_1
+    N11 --> nest0_0
+    nest0_1 -.-> N8
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N1 -.-> nest1_0
+    nest1_2 --> N5
+    N5 --> S0
+    S0 --> N8
+    S0 -.-> N9
+    N1 --> S1
+    S1 -.-> N7
+    S1 --> N8
+    S1 --> N11
+    N7 -.-> S2
+    S2 --> N10
+    S2 --> N12
+    S2 -.-> N9
+    N9 --> M0
+    N0 --> M0
+    N6 -.-> M0
+    M0 --> N13
+    N1 -.-> M1
+    N2 --> M1
+    N0 -.-> M1
+    M1 --> N4
+    N0 --> M2
+    N2 --> M2
+    N1 -.-> M2
+    M2 -.-> N5
+    style N0 fill:#F8FDD3,stroke:#D3EB9F
+    style N1 fill:#F8FDD3,stroke:#D3EB9F
+    style N2 fill:#FCE4EC,stroke:#E91E63
+    style N3 fill:#F8FDD3,stroke:#D3EB9F
+    style N4 fill:#FCE4EC,stroke:#E91E63
+    style N5 fill:#F8FDD3,stroke:#D3EB9F
+    style N6 fill:#FCE4EC,stroke:#E91E63
+    style N7 fill:#EDF5F3,stroke:#A1D7CD
+    style N8 fill:#EDF5F3,stroke:#A1D7CD
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#F8FDD3,stroke:#D3EB9F
+    style N11 fill:#EDF5F3,stroke:#A1D7CD
+    style N12 fill:#EDF5F3,stroke:#A1D7CD
+    style N13 fill:#EDF5F3,stroke:#A1D7CD
+    style S0 fill:#F8FDD3,stroke:#D3EB9F
+    style S1 fill:#EDF5F3,stroke:#A1D7CD
+    style S2 fill:#FCE4EC,stroke:#E91E63
+    style M0 fill:#FCE4EC,stroke:#E91E63
+    style M1 fill:#F8FDD3,stroke:#D3EB9F
+    style M2 fill:#FCE4EC,stroke:#E91E63
+    style nest0_0 fill:#FCE4EC,stroke:#E91E63
+    style nest0_1 fill:#EDF5F3,stroke:#A1D7CD
+    style nest1_0 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_1 fill:#F8FDD3,stroke:#D3EB9F
+    style nest1_2 fill:#F8FDD3,stroke:#D3EB9F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1D7CD,stroke-width:2px,fill:none;
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+    linkStyle 10 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 19 stroke:#E91E63,stroke-width:2px,fill:none;
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+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#A1D7CD,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#D3EB9F,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#A1D7CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_849.mmd b/train/mermaid/hard/mermaid_849.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..22992b4a041dcec3128afaae8d34eb84ab99c421
--- /dev/null
+++ b/train/mermaid/hard/mermaid_849.mmd
@@ -0,0 +1,128 @@
+graph RL
+    N0([start])
+    N1[Glacial Seismology]
+    N2(Planetary Seismology)
+    N3(Seismic Inversion)
+    N4(Strong Motion Instrumentation)
+    N5[Volcanic Seismology]
+    N6[/Earthquake Prediction Research/]
+    N7[/Tsunami Warning Systems/]
+    N8[(Paleoseismology)]
+    N9[[Seismic Tomography]]
+    N10([Seismic Noise Analysis])
+    N11[(Earth Structure Imaging)]
+    N12{Seismic Data Processing}
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Fault Line Mapping
+        nest0_0(Epicenter Location)
+        nest0_1[/Seismic Instrumentation Maintenance/]
+    end
+    subgraph Magnitude Determination
+        nest1_0[Earthquake Detection]
+        nest1_1(Subsurface Imaging)
+        nest1_2[[Seismic Network Operations]]
+        nest1_3([Structural Response to Earthquakes])
+    end
+    N0 --> N1
+    N1 -.-> |educates| N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 -.-> N12
+    nest0_0 --> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 -.-> N12
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> |records| nest1_3
+    N11 --> nest1_0
+    nest1_3 -.-> N11
+    N5 -.-> S0
+    S0 -.-> N7
+    S0 --> N10
+    S0 -.-> N11
+    S0 -.-> N9
+    N5 -.-> S1
+    S1 --> N12
+    S1 --> N7
+    N1 --> M0
+    N2 --> M0
+    N0 --> M0
+    N5 -.-> M0
+    M0 --> N7
+    N7 -.-> M1
+    N1 --> M1
+    N5 -.-> M1
+    N3 --> M1
+    M1 -.-> N9
+    style N0 fill:#C9EFEC,stroke:#6FE1D5
+    style N1 fill:#D0E0F8,stroke:#4285F4
+    style N2 fill:#D0E0F8,stroke:#4285F4
+    style N3 fill:#D0E0F8,stroke:#4285F4
+    style N4 fill:#C9EFEC,stroke:#6FE1D5
+    style N5 fill:#D0E0F8,stroke:#4285F4
+    style N6 fill:#D0E0F8,stroke:#4285F4
+    style N7 fill:#D0E0F8,stroke:#4285F4
+    style N8 fill:#C9EFEC,stroke:#6FE1D5
+    style N9 fill:#EDE7F6,stroke:#9575CD
+    style N10 fill:#C9EFEC,stroke:#6FE1D5
+    style N11 fill:#D0E0F8,stroke:#4285F4
+    style N12 fill:#D0E0F8,stroke:#4285F4
+    style S0 fill:#C9EFEC,stroke:#6FE1D5
+    style S1 fill:#EDE7F6,stroke:#9575CD
+    style M0 fill:#C9EFEC,stroke:#6FE1D5
+    style M1 fill:#EDE7F6,stroke:#9575CD
+    style nest0_0 fill:#C9EFEC,stroke:#6FE1D5
+    style nest0_1 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_0 fill:#EDE7F6,stroke:#9575CD
+    style nest1_1 fill:#D0E0F8,stroke:#4285F4
+    style nest1_2 fill:#C9EFEC,stroke:#6FE1D5
+    style nest1_3 fill:#C9EFEC,stroke:#6FE1D5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9575CD,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#9575CD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_849.txt b/train/mermaid/hard/mermaid_849.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fed3f10a2e3cb59e667547b665d3499d3c127ed5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_849.txt
@@ -0,0 +1,37 @@
+<Earth Structure Imaging, connectedTo, Earthquake Detection>
+<Earth Structure Imaging, connectedTo, Seismic Data Processing>
+<Earthquake Detection, connectedTo, Subsurface Imaging>
+<Earthquake Detection, partOf, Magnitude Determination>
+<Earthquake Prediction Research, connectedTo, Tsunami Warning Systems>
+<Epicenter Location, connectedTo, Seismic Instrumentation Maintenance>
+<Epicenter Location, partOf, Fault Line Mapping>
+<Glacial Seismology, connectedTo, Seismic Tomography>
+<Glacial Seismology, connectedTo, Tsunami Warning Systems>
+<Glacial Seismology, educates, Planetary Seismology>
+<Paleoseismology, connectedTo, Seismic Tomography>
+<Planetary Seismology, connectedTo, Seismic Inversion>
+<Planetary Seismology, connectedTo, Tsunami Warning Systems>
+<Seismic Instrumentation Maintenance, connectedTo, Seismic Data Processing>
+<Seismic Instrumentation Maintenance, partOf, Fault Line Mapping>
+<Seismic Inversion, connectedTo, Epicenter Location>
+<Seismic Inversion, connectedTo, Seismic Tomography>
+<Seismic Inversion, connectedTo, Strong Motion Instrumentation>
+<Seismic Network Operations, partOf, Magnitude Determination>
+<Seismic Network Operations, records, Structural Response to Earthquakes>
+<Seismic Noise Analysis, connectedTo, Earth Structure Imaging>
+<Seismic Tomography, connectedTo, Seismic Noise Analysis>
+<Strong Motion Instrumentation, connectedTo, Volcanic Seismology>
+<Structural Response to Earthquakes, connectedTo, Earth Structure Imaging>
+<Structural Response to Earthquakes, partOf, Magnitude Determination>
+<Subsurface Imaging, connectedTo, Seismic Network Operations>
+<Subsurface Imaging, partOf, Magnitude Determination>
+<Tsunami Warning Systems, connectedTo, Paleoseismology>
+<Tsunami Warning Systems, connectedTo, Seismic Tomography>
+<Volcanic Seismology, connectedTo, Earth Structure Imaging>
+<Volcanic Seismology, connectedTo, Earthquake Prediction Research>
+<Volcanic Seismology, connectedTo, Seismic Data Processing>
+<Volcanic Seismology, connectedTo, Seismic Noise Analysis>
+<Volcanic Seismology, connectedTo, Seismic Tomography>
+<Volcanic Seismology, connectedTo, Tsunami Warning Systems>
+<start, connectedTo, Glacial Seismology>
+<start, connectedTo, Tsunami Warning Systems>
diff --git a/train/mermaid/hard/mermaid_85.mmd b/train/mermaid/hard/mermaid_85.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c4d7f05947f563827922a17c16ff015d40ff636a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_85.mmd
@@ -0,0 +1,95 @@
+graph LR
+    N0([start])
+    N1[[Farm Maintenance]]
+    N2(Subsidy Application)
+    N3[[Water Level Measurement]]
+    N4[[Forestry Management]]
+    N5[Precision Farming]
+    N6[(Barn Cleaning)]
+    N7[/Harvesting/]
+    N8{Soil Testing}
+    N9[(Irrigation Scheduling)]
+    N10[Farm Machinery Operation]
+    N11[Packaging for Sale]
+    N12([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Automated Milking
+        nest0_0([Grain Drying])
+        nest0_1[Animal Health Monitoring]
+        nest0_2[Agricultural Research]
+        nest0_3{Soil Nutrient Management}
+    end
+    subgraph Crop Monitoring
+        nest1_0(Seedling Transplanting)
+        nest1_1(Hydroponic System Management)
+    end
+    N0 -.-> |yes| N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N6 --> nest0_0
+    nest0_3 -.-> N8
+    nest1_0 --> nest1_1
+    N2 -.-> nest1_0
+    nest1_1 --> N2
+    N5 -.-> S0
+    S0 -.-> N10
+    S0 -.-> N11
+    S0 --> N8
+    S0 -.-> N9
+    N9 --> S1
+    S1 -.-> N11
+    S1 -.-> N12
+    N6 -.-> M0
+    N1 -.-> M0
+    N7 -.-> M0
+    M0 -.-> N11
+    style S0 fill:#FFDCD6,stroke:#FFB2A5
+    style S1 fill:#F2E6F5,stroke:#CB9BE1
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFB2A5,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_854.mmd b/train/mermaid/hard/mermaid_854.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2b15360f22e9f3882b38b9be4c54af1586407da5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_854.mmd
@@ -0,0 +1,118 @@
+graph BT
+    N0([start])
+    N1[/Strong Motion Instrumentation/]
+    N2[/Earthquake Detection/]
+    N3[/Tectonic Plate Movement Monitoring/]
+    N4(Glacial Seismology)
+    N5([Aftershock Analysis])
+    N6{Liquefaction Potential Assessment}
+    N7{Volcanic Seismology}
+    N8{Nuclear Test Monitoring}
+    N9([Structural Response to Earthquakes])
+    N10[Data Archiving and Distribution]
+    N11(Paleoseismology)
+    N12([Seismic Data Processing])
+    N13(Epicenter Location)
+    N14([Seismic Noise Analysis])
+    N15[Earth Structure Imaging]
+    N16([P_Wave or S_Wave Distinction])
+    N17([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Deep Earth Seismology
+        nest0_0[(Seismic Risk Mitigation)]
+        nest0_1[Seismic Wave Analysis]
+        nest0_2{Geophysical Exploration}
+    end
+    subgraph Ground Motion Prediction
+        nest1_0[Earthquake Early Warning Systems]
+        nest1_1[(Computational Seismology)]
+        nest1_2(Seismic Inversion)
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> |no| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> |yes| N16
+    N16 -.-> N17
+    nest0_0 --> nest0_1
+    nest0_1 -.-> |no| nest0_2
+    N7 --> nest0_0
+    nest0_2 -.-> N15
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N1 --> nest1_0
+    nest1_2 --> N4
+    N13 -.-> S0
+    S0 --> |no| N15
+    S0 --> N16
+    S0 --> N17
+    N8 -.-> S1
+    S1 -.-> N11
+    S1 --> N17
+    S1 -.-> N15
+    N9 --> M0
+    N6 --> |no| M0
+    M0 --> N17
+    N2 -.-> M1
+    N13 -.-> M1
+    N3 -.-> M1
+    M1 --> N17
+    style S0 fill:#F0F0F0,stroke:#D2D2D2
+    style S1 fill:#FFEBEE,stroke:#E57373
+    style M0 fill:#F0F0F0,stroke:#D2D2D2
+    style M1 fill:#F0F0F0,stroke:#D2D2D2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#E57373,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#D2D2D2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_854.txt b/train/mermaid/hard/mermaid_854.txt
new file mode 100644
index 0000000000000000000000000000000000000000..1357faccbf6dac2a86a179d680c36143e5494472
--- /dev/null
+++ b/train/mermaid/hard/mermaid_854.txt
@@ -0,0 +1,41 @@
+<Aftershock Analysis, no, Liquefaction Potential Assessment>
+<Computational Seismology, connectedTo, Seismic Inversion>
+<Computational Seismology, partOf, Ground Motion Prediction>
+<Data Archiving and Distribution, connectedTo, Paleoseismology>
+<Earth Structure Imaging, yes, P_Wave or S_Wave Distinction>
+<Earthquake Detection, connectedTo, Tectonic Plate Movement Monitoring>
+<Earthquake Detection, connectedTo, end>
+<Earthquake Early Warning Systems, connectedTo, Computational Seismology>
+<Earthquake Early Warning Systems, partOf, Ground Motion Prediction>
+<Epicenter Location, connectedTo, P_Wave or S_Wave Distinction>
+<Epicenter Location, connectedTo, Seismic Noise Analysis>
+<Epicenter Location, connectedTo, end>
+<Epicenter Location, no, Earth Structure Imaging>
+<Geophysical Exploration, connectedTo, Earth Structure Imaging>
+<Geophysical Exploration, partOf, Deep Earth Seismology>
+<Glacial Seismology, connectedTo, Aftershock Analysis>
+<Liquefaction Potential Assessment, connectedTo, Volcanic Seismology>
+<Liquefaction Potential Assessment, no, end>
+<Nuclear Test Monitoring, connectedTo, Earth Structure Imaging>
+<Nuclear Test Monitoring, connectedTo, Paleoseismology>
+<Nuclear Test Monitoring, connectedTo, Structural Response to Earthquakes>
+<Nuclear Test Monitoring, connectedTo, end>
+<P_Wave or S_Wave Distinction, connectedTo, end>
+<Paleoseismology, connectedTo, Seismic Data Processing>
+<Seismic Data Processing, connectedTo, Epicenter Location>
+<Seismic Inversion, connectedTo, Glacial Seismology>
+<Seismic Inversion, partOf, Ground Motion Prediction>
+<Seismic Noise Analysis, connectedTo, Earth Structure Imaging>
+<Seismic Risk Mitigation, connectedTo, Seismic Wave Analysis>
+<Seismic Risk Mitigation, partOf, Deep Earth Seismology>
+<Seismic Wave Analysis, no, Geophysical Exploration>
+<Seismic Wave Analysis, partOf, Deep Earth Seismology>
+<Strong Motion Instrumentation, connectedTo, Earthquake Detection>
+<Strong Motion Instrumentation, connectedTo, Earthquake Early Warning Systems>
+<Structural Response to Earthquakes, connectedTo, Data Archiving and Distribution>
+<Structural Response to Earthquakes, connectedTo, end>
+<Tectonic Plate Movement Monitoring, connectedTo, Glacial Seismology>
+<Tectonic Plate Movement Monitoring, connectedTo, end>
+<Volcanic Seismology, connectedTo, Nuclear Test Monitoring>
+<Volcanic Seismology, connectedTo, Seismic Risk Mitigation>
+<start, connectedTo, Strong Motion Instrumentation>
diff --git a/train/mermaid/hard/mermaid_855.txt b/train/mermaid/hard/mermaid_855.txt
new file mode 100644
index 0000000000000000000000000000000000000000..accc58d29e980c6d1e54824ad9b41833ad5360d5
--- /dev/null
+++ b/train/mermaid/hard/mermaid_855.txt
@@ -0,0 +1,30 @@
+<Building Code Development, connectedTo, Emergency Preparedness for Earthquakes>
+<Building Code Development, connectedTo, Seismic Risk Mitigation>
+<Computational Seismology, risk_assesses, Nuclear Test Monitoring>
+<Earthquake Early Warning Systems, connectedTo, Seismic Wave Analysis>
+<Earthquake Early Warning Systems, partOf, Seismic Noise Analysis>
+<Emergency Preparedness for Earthquakes, connectedTo, P_Wave or S_Wave Distinction>
+<Emergency Preparedness for Earthquakes, connectedTo, Tectonic Stress Measurement>
+<Emergency Preparedness for Earthquakes, monitors, Seismic Hazard Assessment>
+<Fault Line Mapping, connectedTo, Magnitude Determination>
+<Fault Line Mapping, partOf, Earth Structure Imaging>
+<Geophysical Exploration, connectedTo, Tectonic Plate Movement Monitoring>
+<Geophysical Exploration, partOf, Earth Structure Imaging>
+<Magnitude Determination, connectedTo, Geophysical Exploration>
+<Magnitude Determination, partOf, Earth Structure Imaging>
+<Nuclear Test Monitoring, connectedTo, Planetary Seismology>
+<Nuclear Test Monitoring, improves_accuracy, Earthquake Early Warning Systems>
+<P_Wave or S_Wave Distinction, connectedTo, Computational Seismology>
+<P_Wave or S_Wave Distinction, connectedTo, Planetary Seismology>
+<P_Wave or S_Wave Distinction, connectedTo, Volcanic Seismology>
+<P_Wave or S_Wave Distinction, models, Seismic Hazard Assessment>
+<Planetary Seismology, connectedTo, Tectonic Stress Measurement>
+<Seismic Hazard Assessment, connectedTo, Seismic Risk Mitigation>
+<Seismic Risk Mitigation, connectedTo, Computational Seismology>
+<Seismic Risk Mitigation, connectedTo, Fault Line Mapping>
+<Seismic Wave Analysis, connectedTo, Seismic Hazard Assessment>
+<Seismic Wave Analysis, partOf, Seismic Noise Analysis>
+<Tectonic Plate Movement Monitoring, connectedTo, P_Wave or S_Wave Distinction>
+<Tectonic Plate Movement Monitoring, partOf, Earth Structure Imaging>
+<Volcanic Seismology, connectedTo, Seismic Hazard Assessment>
+<Volcanic Seismology, connectedTo, Seismic Risk Mitigation>
diff --git a/train/mermaid/hard/mermaid_857.mmd b/train/mermaid/hard/mermaid_857.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..ef8fc8df75f82a7b9f2d14a02a6913ba49a5d763
--- /dev/null
+++ b/train/mermaid/hard/mermaid_857.mmd
@@ -0,0 +1,140 @@
+graph TD
+    N0([Metabolomics])
+    N1{Genomic Data Visualization}
+    N2[[Ethical, Legal, and Social Implications]]
+    N3[Synthetic Genomics]
+    N4{Pharmacogenomics}
+    N5[Genomic Editing]
+    N6[(Genome Assembly)]
+    N7[[Next_Generation Sequencing]]
+    N8[[Long_Read Sequencing]]
+    N9(Genomic Data Analysis)
+    N10[Transcriptomics]
+    N11(Cloning Technologies)
+    N12([Disease Gene Identification])
+    N13(Personalized Medicine)
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Genetic Testing
+        nest0_0[/Spatial Genomics/]
+        nest0_1[Proteomics]
+        nest0_2{Biomarker Discovery}
+    end
+    subgraph CRISPR Gene Drive Research
+        nest1_0[Data Privacy in Genomics]
+        nest1_1[(Gene Expression Profiling)]
+        nest1_2[[Cancer Genomics]]
+        nest1_3(Bioinformatics Pipeline Development)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> |accesses_data| N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N10 --> nest0_0
+    nest0_2 --> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N7 --> nest1_0
+    nest1_3 --> N4
+    N1 --> S0
+    S0 --> N3
+    S0 -.-> N8
+    S0 -.-> |collaborates| N6
+    N4 -.-> S1
+    S1 -.-> N8
+    S1 --> N10
+    S1 -.-> N6
+    S1 --> N13
+    N9 --> S2
+    S2 --> N11
+    S2 -.-> N12
+    N4 --> M0
+    N0 --> M0
+    M0 -.-> N13
+    N0 -.-> M1
+    N3 -.-> M1
+    N1 --> M1
+    M1 -.-> N5
+    style N0 fill:#FFF9C4,stroke:#FFEB3B
+    style N1 fill:#FFF3E0,stroke:#FFA726
+    style N2 fill:#FFF9C4,stroke:#FFEB3B
+    style N3 fill:#FFF9C4,stroke:#FFEB3B
+    style N4 fill:#ECEFF1,stroke:#90A4AE
+    style N5 fill:#ECEFF1,stroke:#90A4AE
+    style N6 fill:#FFF3E0,stroke:#FFA726
+    style N7 fill:#FFF9C4,stroke:#FFEB3B
+    style N8 fill:#ECEFF1,stroke:#90A4AE
+    style N9 fill:#ECEFF1,stroke:#90A4AE
+    style N10 fill:#FFF9C4,stroke:#FFEB3B
+    style N11 fill:#ECEFF1,stroke:#90A4AE
+    style N12 fill:#FFF3E0,stroke:#FFA726
+    style N13 fill:#FFF3E0,stroke:#FFA726
+    style S0 fill:#ECEFF1,stroke:#90A4AE
+    style S1 fill:#FFF3E0,stroke:#FFA726
+    style S2 fill:#FFF3E0,stroke:#FFA726
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#FFF3E0,stroke:#FFA726
+    style nest0_0 fill:#FFF9C4,stroke:#FFEB3B
+    style nest0_1 fill:#FFF3E0,stroke:#FFA726
+    style nest0_2 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_0 fill:#FFF3E0,stroke:#FFA726
+    style nest1_1 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_2 fill:#ECEFF1,stroke:#90A4AE
+    style nest1_3 fill:#ECEFF1,stroke:#90A4AE
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#FFEB3B,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#90A4AE,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_858.txt b/train/mermaid/hard/mermaid_858.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0ff843e87862795df10f02a4349b71c3e8c94c5f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_858.txt
@@ -0,0 +1,36 @@
+<CRISPR Gene Drive Research, connectedTo, Structural Genomics>
+<Cancer Genomics, connectedTo, CRISPR Gene Drive Research>
+<Cancer Genomics, connectedTo, DNA Sequencing>
+<Computational Genomics, connectedTo, Genomic Data Visualization>
+<Computational Genomics, connectedTo, Personalized Medicine>
+<DNA Sequencing, connectedTo, Data Privacy in Genomics>
+<DNA Sequencing, connectedTo, Genomic Data Sharing>
+<Data Privacy in Genomics, connectedTo, Functional Genomics>
+<Data Privacy in Genomics, connectedTo, Genomic Data Sharing>
+<Data Privacy in Genomics, connectedTo, Spatial Genomics>
+<Disease Gene Identification, no, DNA Sequencing>
+<Disease Gene Identification, partOf, Rare Disease Genomics>
+<Epigenomics, connectedTo, Genomic Data Visualization>
+<Ethical, Legal, and Social Implications, connectedTo, Genome_Wide Association Studies>
+<Ethical, Legal, and Social Implications, partOf, Genomic Data Analysis>
+<Functional Genomics, connectedTo, Genomic Data Sharing>
+<Genetic Testing, connectedTo, end>
+<Genome Assembly, connectedTo, Genome_Wide Association Studies>
+<Genome_Wide Association Studies, connectedTo, Genetic Testing>
+<Genomic Data Sharing, connectedTo, CRISPR Gene Drive Research>
+<Genomic Data Sharing, connectedTo, Proteomics>
+<Genomic Data Visualization, connectedTo, CRISPR Gene Drive Research>
+<Genomic Data Visualization, connectedTo, Cancer Genomics>
+<Personalized Medicine, connectedTo, Epigenomics>
+<Personalized Medicine, connectedTo, Genomic Data Visualization>
+<Personalized Medicine, connectedTo, Variant Calling>
+<Proteomics, connectedTo, CRISPR Gene Drive Research>
+<Spatial Genomics, connectedTo, Disease Gene Identification>
+<Spatial Genomics, partOf, Rare Disease Genomics>
+<Structural Genomics, connectedTo, Genetic Testing>
+<Structural Genomics, connectedTo, Genome Assembly>
+<Structural Genomics, connectedTo, Genome_Wide Association Studies>
+<Structural Genomics, connectedTo, end>
+<Variant Calling, connectedTo, Ethical, Legal, and Social Implications>
+<Variant Calling, partOf, Genomic Data Analysis>
+<start, yes, Computational Genomics>
diff --git a/train/mermaid/hard/mermaid_859.txt b/train/mermaid/hard/mermaid_859.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e5a3a3d7abed47185c709d31e0d4e6527f7c85ec
--- /dev/null
+++ b/train/mermaid/hard/mermaid_859.txt
@@ -0,0 +1,31 @@
+<AML Screening, connectedTo, Account Verification>
+<AML Screening, connectedTo, Customer Onboarding>
+<Account Closure, connectedTo, Risk Assessment>
+<Account Closure, partOf, Blockchain Verification>
+<Account Verification, connectedTo, Approval Decision>
+<Approval Decision, connectedTo, Compliance Review>
+<Compliance Review, connectedTo, Market Analysis>
+<Cryptocurrency Exchange, connectedTo, Tax Preparation>
+<Cryptocurrency Exchange, partOf, Venture Capital Funding>
+<Customer Onboarding, connectedTo, Financial Advisory>
+<Customer Onboarding, partOf, Blockchain Verification>
+<Financial Advisory, connectedTo, Account Closure>
+<Financial Advisory, partOf, Blockchain Verification>
+<Interest Calculation, connectedTo, Approval Decision>
+<Interest Calculation, partOf, Venture Capital Funding>
+<KYC Validation, connectedTo, AML Screening>
+<KYC Validation, connectedTo, Account Verification>
+<KYC Validation, connectedTo, Compliance Review>
+<KYC Validation, connectedTo, Market Analysis>
+<KYC Validation, connectedTo, Merger and Acquisition>
+<KYC Validation, connectedTo, Securities Trading>
+<Merger and Acquisition, connectedTo, AML Screening>
+<Merger and Acquisition, yes, Cryptocurrency Exchange>
+<Risk Assessment, connectedTo, Merger and Acquisition>
+<Risk Assessment, partOf, Blockchain Verification>
+<Securities Trading, connectedTo, Merger and Acquisition>
+<Tax Preparation, connectedTo, Underwriting>
+<Tax Preparation, partOf, Venture Capital Funding>
+<Underwriting, connectedTo, Interest Calculation>
+<Underwriting, partOf, Venture Capital Funding>
+<start, connectedTo, KYC Validation>
diff --git a/train/mermaid/hard/mermaid_860.mmd b/train/mermaid/hard/mermaid_860.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f950043d387343ec62a0d2f1a6b7b8ceee71a072
--- /dev/null
+++ b/train/mermaid/hard/mermaid_860.mmd
@@ -0,0 +1,98 @@
+graph BT
+    N0([start])
+    N1(Underwriting)
+    N2{Collateral Evaluation}
+    N3[(Treasury Management)]
+    N4[Fraud Check]
+    N5[/Cryptocurrency Exchange/]
+    N6(Approval Decision)
+    N7[(Market Analysis)]
+    N8{Account Verification}
+    N9[Payment Gateway Integration]
+    N10(Budgeting Analysis)
+    N11[AML Screening]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Dispute Resolution
+        nest0_0(Mortgage Application)
+        nest0_1[/Tax Preparation/]
+        nest0_2([Financial Advisory])
+    end
+    subgraph Loan Processing
+        nest1_0{Investment Planning}
+        nest1_1[Interest Calculation]
+        nest1_2[IPO Launch]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> |yes| N9
+    N9 --> N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N7 --> nest0_0
+    nest0_2 --> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N1 -.-> |yes| nest1_0
+    nest1_2 --> |yes| N3
+    N2 --> S0
+    S0 --> N9
+    S0 --> N4
+    N2 --> S1
+    S1 -.-> N8
+    S1 -.-> |no| N6
+    S1 -.-> N11
+    N0 -.-> M0
+    N1 -.-> M0
+    N3 --> M0
+    M0 --> N5
+    N0 --> M1
+    N1 --> M1
+    M1 --> N3
+    style S0 fill:#E8F0FF,stroke:#A2D0FF
+    style S1 fill:#F9FBE7,stroke:#C0CA33
+    style M0 fill:#C9F0F0,stroke:#4DD0E1
+    style M1 fill:#C9F0F0,stroke:#4DD0E1
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A2D0FF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_861.mmd b/train/mermaid/hard/mermaid_861.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8757b659b4df9e576e092f2766d7b1c2a9484e28
--- /dev/null
+++ b/train/mermaid/hard/mermaid_861.mmd
@@ -0,0 +1,116 @@
+graph LR
+    N0([start])
+    N1[Gene Therapy Development]
+    N2{Genetic Counseling}
+    N3[(CRISPR Gene Drive Research)]
+    N4[(Metabolomics)]
+    N5([Genomic Data Sharing])
+    N6[Pharmacogenomics]
+    N7[Genome Assembly]
+    N8[(Next_Generation Sequencing)]
+    N9[/Comparative Genomics/]
+    N10[[Population Genomics]]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Bioinformatics Pipeline Development
+        nest0_0[Computational Genomics]
+        nest0_1[[Genomic Data Analysis]]
+        nest0_2[[Transcriptomics]]
+        nest0_3{Structural Genomics}
+    end
+    subgraph Proteomics
+        nest1_0[Variant Calling]
+        nest1_1([Genetic Testing])
+        nest1_2([Single_Cell Genomics])
+    end
+    N0 -.-> N1
+    N1 --> |edits| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> |interprets| N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |modifies| N9
+    N9 --> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N9 -.-> nest0_0
+    nest0_3 -.-> N10
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N9 --> nest1_0
+    nest1_2 --> N10
+    N5 --> S0
+    S0 -.-> N8
+    S0 --> N10
+    S0 -.-> |privacy_protects| N7
+    N3 -.-> S1
+    S1 --> N6
+    S1 -.-> N5
+    S1 -.-> N7
+    N8 -.-> M0
+    N4 --> M0
+    M0 --> N10
+    N5 -.-> |RNA_investigates| M1
+    N7 --> M1
+    M1 -.-> N10
+    style N0 fill:#CFD8DC,stroke:#607D8B
+    style N1 fill:#FCE4EC,stroke:#F06292
+    style N2 fill:#EDE7F6,stroke:#7E57C2
+    style N3 fill:#FCE4EC,stroke:#F06292
+    style N4 fill:#EDE7F6,stroke:#7E57C2
+    style N5 fill:#EDE7F6,stroke:#7E57C2
+    style N6 fill:#CFD8DC,stroke:#607D8B
+    style N7 fill:#CFD8DC,stroke:#607D8B
+    style N8 fill:#EDE7F6,stroke:#7E57C2
+    style N9 fill:#FCE4EC,stroke:#F06292
+    style N10 fill:#FCE4EC,stroke:#F06292
+    style S0 fill:#FCE4EC,stroke:#F06292
+    style S1 fill:#FCE4EC,stroke:#F06292
+    style M0 fill:#FCE4EC,stroke:#F06292
+    style M1 fill:#FCE4EC,stroke:#F06292
+    style nest0_0 fill:#EDE7F6,stroke:#7E57C2
+    style nest0_1 fill:#CFD8DC,stroke:#607D8B
+    style nest0_2 fill:#FCE4EC,stroke:#F06292
+    style nest0_3 fill:#FCE4EC,stroke:#F06292
+    style nest1_0 fill:#FCE4EC,stroke:#F06292
+    style nest1_1 fill:#FCE4EC,stroke:#F06292
+    style nest1_2 fill:#CFD8DC,stroke:#607D8B
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#607D8B,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#7E57C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_861.txt b/train/mermaid/hard/mermaid_861.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0cd1770d8cc537afd8c51f9558864aa5932ac6b6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_861.txt
@@ -0,0 +1,36 @@
+<CRISPR Gene Drive Research, connectedTo, Genome Assembly>
+<CRISPR Gene Drive Research, connectedTo, Genomic Data Sharing>
+<CRISPR Gene Drive Research, connectedTo, Metabolomics>
+<CRISPR Gene Drive Research, connectedTo, Pharmacogenomics>
+<Comparative Genomics, connectedTo, Computational Genomics>
+<Comparative Genomics, connectedTo, Population Genomics>
+<Comparative Genomics, connectedTo, Variant Calling>
+<Computational Genomics, connectedTo, Genomic Data Analysis>
+<Computational Genomics, partOf, Bioinformatics Pipeline Development>
+<Gene Therapy Development, edits, Genetic Counseling>
+<Genetic Counseling, connectedTo, CRISPR Gene Drive Research>
+<Genetic Testing, connectedTo, Single_Cell Genomics>
+<Genetic Testing, partOf, Proteomics>
+<Genome Assembly, connectedTo, Next_Generation Sequencing>
+<Genome Assembly, connectedTo, Population Genomics>
+<Genomic Data Analysis, connectedTo, Transcriptomics>
+<Genomic Data Analysis, partOf, Bioinformatics Pipeline Development>
+<Genomic Data Sharing, RNA_investigates, Population Genomics>
+<Genomic Data Sharing, connectedTo, Next_Generation Sequencing>
+<Genomic Data Sharing, connectedTo, Pharmacogenomics>
+<Genomic Data Sharing, connectedTo, Population Genomics>
+<Genomic Data Sharing, privacy_protects, Genome Assembly>
+<Metabolomics, connectedTo, Population Genomics>
+<Metabolomics, interprets, Genomic Data Sharing>
+<Next_Generation Sequencing, connectedTo, Population Genomics>
+<Next_Generation Sequencing, modifies, Comparative Genomics>
+<Pharmacogenomics, connectedTo, Genome Assembly>
+<Single_Cell Genomics, connectedTo, Population Genomics>
+<Single_Cell Genomics, partOf, Proteomics>
+<Structural Genomics, connectedTo, Population Genomics>
+<Structural Genomics, partOf, Bioinformatics Pipeline Development>
+<Transcriptomics, connectedTo, Structural Genomics>
+<Transcriptomics, partOf, Bioinformatics Pipeline Development>
+<Variant Calling, connectedTo, Genetic Testing>
+<Variant Calling, partOf, Proteomics>
+<start, connectedTo, Gene Therapy Development>
diff --git a/train/mermaid/hard/mermaid_862.txt b/train/mermaid/hard/mermaid_862.txt
new file mode 100644
index 0000000000000000000000000000000000000000..20e165dd23158b8ef73c3da6e5aa594e431f484f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_862.txt
@@ -0,0 +1,35 @@
+<Bioinformatics Pipeline Development, connectedTo, Structural Genomics>
+<Bioinformatics Pipeline Development, partOf, Proteomics>
+<Biomarker Discovery, connectedTo, Spatial Genomics>
+<CRISPR Gene Drive Research, connectedTo, Disease Gene Identification>
+<CRISPR Gene Drive Research, partOf, Single_Cell Genomics>
+<Cloning Technologies, annotates, Spatial Genomics>
+<Cloning Technologies, connectedTo, Biomarker Discovery>
+<Cloning Technologies, connectedTo, Ethical, Legal, and Social Implications>
+<Data Privacy in Genomics, partOf, Single_Cell Genomics>
+<Data Privacy in Genomics, synthesizes, Methylation Analysis>
+<Epigenomics, connectedTo, CRISPR Gene Drive Research>
+<Epigenomics, partOf, Single_Cell Genomics>
+<Ethical, Legal, and Social Implications, connectedTo, Genome_Wide Association Studies>
+<Functional Genomics, connectedTo, Population Genomics>
+<Genome_Wide Association Studies, connectedTo, Disease Gene Identification>
+<Genomic Data Analysis, connectedTo, Genomic Data Sharing>
+<Genomic Data Sharing, connectedTo, Microbial Genomics>
+<Methylation Analysis, connectedTo, Epigenomics>
+<Methylation Analysis, partOf, Single_Cell Genomics>
+<Microbial Genomics, connectedTo, Bioinformatics Pipeline Development>
+<Microbial Genomics, connectedTo, Disease Gene Identification>
+<Microbial Genomics, connectedTo, Genome_Wide Association Studies>
+<Microbial Genomics, connectedTo, Next_Generation Sequencing>
+<Next_Generation Sequencing, connectedTo, Personalized Medicine>
+<Personalized Medicine, connectedTo, Disease Gene Identification>
+<Personalized Medicine, connectedTo, Ethical, Legal, and Social Implications>
+<Personalized Medicine, therapies_develops, Genome_Wide Association Studies>
+<Population Genomics, connectedTo, Cloning Technologies>
+<Population Genomics, connectedTo, Ethical, Legal, and Social Implications>
+<Rare Disease Genomics, connectedTo, Functional Genomics>
+<Spatial Genomics, connectedTo, Data Privacy in Genomics>
+<Spatial Genomics, connectedTo, Ethical, Legal, and Social Implications>
+<Spatial Genomics, identifies, Genomic Data Analysis>
+<Structural Genomics, connectedTo, Biomarker Discovery>
+<Structural Genomics, partOf, Proteomics>
diff --git a/train/mermaid/hard/mermaid_866.mmd b/train/mermaid/hard/mermaid_866.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..377ab1f929cc183252ab1318b199ba7c29e08be1
--- /dev/null
+++ b/train/mermaid/hard/mermaid_866.mmd
@@ -0,0 +1,158 @@
+graph TD
+    N0([Emotion Recognition from Voice])
+    N1[/Keyword Spotting/]
+    N2{Natural Language Understanding}
+    N3(Noise Reduction)
+    N4(Robust Speech Recognition)
+    N5{Speech Analytics}
+    N6(Voice Activity Detection)
+    N7(Speech Data Annotation)
+    N8{Embedded Speech Recognition}
+    N9{Language Modeling}
+    N10[(Contextual Understanding)]
+    N11{Disordered Speech Recognition}
+    N12{Voice Biometrics}
+    N13[/Accent Recognition/]
+    N14([Voice Search Optimization])
+    N15(Multimodal Speech Processing)
+    N16(Security Authentication)
+    N17([Automatic Speech Recognition])
+    N18([Cross_Lingual Speech Recognition])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Phonetic Transcription
+        nest0_0{Speech Emotion Recognition}
+        nest0_1(Command and Control)
+        nest0_2[[Speaker Identification]]
+    end
+    subgraph Dialect Adaptation
+        nest1_0[[Call Center Automation]]
+        nest1_1{Speaker Diarization}
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> |designs| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> |integrates| N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> |evaluates| N15
+    N15 --> |processes| N16
+    N16 --> N17
+    N17 -.-> N18
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N2 -.-> nest0_0
+    nest0_2 --> N9
+    nest1_0 -.-> nest1_1
+    N12 --> nest1_0
+    nest1_1 --> N2
+    N1 -.-> S0
+    S0 -.-> N17
+    S0 --> N5
+    S0 -.-> |interprets| N6
+    N3 -.-> S1
+    S1 --> N14
+    S1 -.-> N15
+    S1 -.-> N5
+    S1 -.-> N13
+    N2 -.-> |filters| M0
+    N6 -.-> M0
+    M0 --> N18
+    N5 -.-> M1
+    N3 -.-> M1
+    N8 -.-> M1
+    N2 --> M1
+    M1 -.-> N10
+    N14 -.-> M2
+    N15 --> M2
+    N4 --> M2
+    N6 -.-> M2
+    M2 --> N17
+    style N0 fill:#C8E6C9,stroke:#388E3C
+    style N1 fill:#F6F6F6,stroke:#CFCFCF
+    style N2 fill:#EFE6FF,stroke:#C2B2F0
+    style N3 fill:#F6F6F6,stroke:#CFCFCF
+    style N4 fill:#C8E6C9,stroke:#388E3C
+    style N5 fill:#F6F6F6,stroke:#CFCFCF
+    style N6 fill:#EFE6FF,stroke:#C2B2F0
+    style N7 fill:#F6F6F6,stroke:#CFCFCF
+    style N8 fill:#C8E6C9,stroke:#388E3C
+    style N9 fill:#C8E6C9,stroke:#388E3C
+    style N10 fill:#EFE6FF,stroke:#C2B2F0
+    style N11 fill:#EFE6FF,stroke:#C2B2F0
+    style N12 fill:#EFE6FF,stroke:#C2B2F0
+    style N13 fill:#F6F6F6,stroke:#CFCFCF
+    style N14 fill:#F6F6F6,stroke:#CFCFCF
+    style N15 fill:#F6F6F6,stroke:#CFCFCF
+    style N16 fill:#C8E6C9,stroke:#388E3C
+    style N17 fill:#F6F6F6,stroke:#CFCFCF
+    style N18 fill:#F6F6F6,stroke:#CFCFCF
+    style S0 fill:#C8E6C9,stroke:#388E3C
+    style S1 fill:#EFE6FF,stroke:#C2B2F0
+    style M0 fill:#C8E6C9,stroke:#388E3C
+    style M1 fill:#EFE6FF,stroke:#C2B2F0
+    style M2 fill:#EFE6FF,stroke:#C2B2F0
+    style nest0_0 fill:#F6F6F6,stroke:#CFCFCF
+    style nest0_1 fill:#F6F6F6,stroke:#CFCFCF
+    style nest0_2 fill:#C8E6C9,stroke:#388E3C
+    style nest1_0 fill:#EFE6FF,stroke:#C2B2F0
+    style nest1_1 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 43 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 44 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 45 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 46 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_868.txt b/train/mermaid/hard/mermaid_868.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3a41f2f8348f26cb0a2bbaf0f8587a5eec903439
--- /dev/null
+++ b/train/mermaid/hard/mermaid_868.txt
@@ -0,0 +1,32 @@
+<Automatic Speech Recognition, connectedTo, Linguistic Analysis>
+<Automatic Speech Recognition, partOf, Security Authentication>
+<Cloud_based Speech Services, connectedTo, Cross_Lingual Speech Recognition>
+<Cloud_based Speech Services, connectedTo, Multimodal Speech Processing>
+<Command and Control, adapts, Noise Reduction>
+<Command and Control, connectedTo, Speech Analytics>
+<Contextual Understanding, connectedTo, Voice Biometrics>
+<Contextual Understanding, partOf, Speech Emotion Recognition>
+<Cross_Lingual Speech Recognition, connectedTo, Keyword Spotting>
+<Cross_Lingual Speech Recognition, partOf, Security Authentication>
+<Keyword Spotting, connectedTo, Prosody Analysis>
+<Keyword Spotting, partOf, Security Authentication>
+<Linguistic Analysis, connectedTo, Meeting Transcription>
+<Meeting Transcription, connectedTo, Cloud_based Speech Services>
+<Natural Language Understanding, connectedTo, Contextual Understanding>
+<Natural Language Understanding, partOf, Speech Emotion Recognition>
+<Noise Reduction, connectedTo, Speaker Identification>
+<Noise Reduction, connectedTo, Speech Analytics>
+<Prosody Analysis, connectedTo, Automatic Speech Recognition>
+<Prosody Analysis, partOf, Security Authentication>
+<Real_Time Captioning, connectedTo, Cloud_based Speech Services>
+<Real_Time Captioning, connectedTo, Linguistic Analysis>
+<Real_Time Captioning, connectedTo, Meeting Transcription>
+<Real_Time Captioning, connectedTo, Multimodal Speech Processing>
+<Real_Time Captioning, connectedTo, Natural Language Understanding>
+<Real_Time Captioning, connectedTo, Speech Analytics>
+<Speaker Identification, connectedTo, Speech Analytics>
+<Speaker Identification, connectedTo, Voice Biometrics>
+<Speech Analytics, connectedTo, Linguistic Analysis>
+<Voice Biometrics, connectedTo, Real_Time Captioning>
+<Voice Search Optimization, connectedTo, Command and Control>
+<Voice Search Optimization, connectedTo, Speech Analytics>
diff --git a/train/mermaid/hard/mermaid_869.mmd b/train/mermaid/hard/mermaid_869.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..7bb4efe968d886c6ece59535aa4e63ebfded6316
--- /dev/null
+++ b/train/mermaid/hard/mermaid_869.mmd
@@ -0,0 +1,130 @@
+graph TD
+    N0([Speech Analytics])
+    N1[Cross_Lingual Speech Recognition]
+    N2[Voice Search Optimization]
+    N3[Accent Recognition]
+    N4[[Text_to_Speech Synthesis]]
+    N5[/Speaker Diarization/]
+    N6([Medical Transcription])
+    N7(Meeting Transcription)
+    N8[[Speech Data Annotation]]
+    N9[[Dialect Adaptation]]
+    N10(Language Modeling)
+    N11[Contextual Understanding]
+    N12[[Acoustic Modeling]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Disordered Speech Recognition
+        nest0_0(Embedded Speech Recognition)
+        nest0_1[Speech_to_Text Conversion]
+    end
+    subgraph Natural Language Understanding
+        nest1_0[(Children's Speech Recognition)]
+        nest1_1(Speaker Identification)
+        nest1_2[(Speech Emotion Recognition)]
+        nest1_3[Voice Activity Detection]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 --> nest0_1
+    N3 --> nest0_0
+    nest0_1 -.-> N10
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N9 --> nest1_0
+    nest1_3 -.-> N11
+    N5 -.-> S0
+    S0 --> N8
+    S0 -.-> N9
+    N0 -.-> S1
+    S1 -.-> N7
+    S1 -.-> N12
+    N5 --> S2
+    S2 --> N8
+    S2 -.-> N9
+    S2 --> N10
+    N3 -.-> M0
+    N6 --> M0
+    N2 --> M0
+    M0 --> N8
+    N8 --> M1
+    N3 --> M1
+    N9 --> M1
+    M1 -.-> N11
+    style N0 fill:#DFE7EB,stroke:#B0C5CD
+    style N1 fill:#CADEDE,stroke:#94C0C0
+    style N2 fill:#CADEDE,stroke:#94C0C0
+    style N3 fill:#DFE7EB,stroke:#B0C5CD
+    style N4 fill:#DFE7EB,stroke:#B0C5CD
+    style N5 fill:#CADEDE,stroke:#94C0C0
+    style N6 fill:#CADEDE,stroke:#94C0C0
+    style N7 fill:#CADEDE,stroke:#94C0C0
+    style N8 fill:#FBE9E7,stroke:#FF8A65
+    style N9 fill:#FBE9E7,stroke:#FF8A65
+    style N10 fill:#FBE9E7,stroke:#FF8A65
+    style N11 fill:#DFE7EB,stroke:#B0C5CD
+    style N12 fill:#CADEDE,stroke:#94C0C0
+    style S0 fill:#FBE9E7,stroke:#FF8A65
+    style S1 fill:#DFE7EB,stroke:#B0C5CD
+    style S2 fill:#FBE9E7,stroke:#FF8A65
+    style M0 fill:#DFE7EB,stroke:#B0C5CD
+    style M1 fill:#FBE9E7,stroke:#FF8A65
+    style nest0_0 fill:#DFE7EB,stroke:#B0C5CD
+    style nest0_1 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#CADEDE,stroke:#94C0C0
+    style nest1_1 fill:#DFE7EB,stroke:#B0C5CD
+    style nest1_2 fill:#CADEDE,stroke:#94C0C0
+    style nest1_3 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FF8A65,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_869.txt b/train/mermaid/hard/mermaid_869.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0bbe4f1aabc160cedefea6c3584172c7a8b297f8
--- /dev/null
+++ b/train/mermaid/hard/mermaid_869.txt
@@ -0,0 +1,37 @@
+<Accent Recognition, connectedTo, Contextual Understanding>
+<Accent Recognition, connectedTo, Embedded Speech Recognition>
+<Accent Recognition, connectedTo, Speech Data Annotation>
+<Accent Recognition, connectedTo, Text_to_Speech Synthesis>
+<Children's Speech Recognition, connectedTo, Speaker Identification>
+<Children's Speech Recognition, partOf, Natural Language Understanding>
+<Contextual Understanding, connectedTo, Acoustic Modeling>
+<Cross_Lingual Speech Recognition, connectedTo, Voice Search Optimization>
+<Dialect Adaptation, connectedTo, Children's Speech Recognition>
+<Dialect Adaptation, connectedTo, Contextual Understanding>
+<Dialect Adaptation, connectedTo, Language Modeling>
+<Embedded Speech Recognition, connectedTo, Speech_to_Text Conversion>
+<Embedded Speech Recognition, partOf, Disordered Speech Recognition>
+<Language Modeling, connectedTo, Contextual Understanding>
+<Medical Transcription, connectedTo, Meeting Transcription>
+<Medical Transcription, connectedTo, Speech Data Annotation>
+<Meeting Transcription, connectedTo, Speech Data Annotation>
+<Speaker Diarization, connectedTo, Dialect Adaptation>
+<Speaker Diarization, connectedTo, Language Modeling>
+<Speaker Diarization, connectedTo, Medical Transcription>
+<Speaker Diarization, connectedTo, Speech Data Annotation>
+<Speaker Identification, connectedTo, Speech Emotion Recognition>
+<Speaker Identification, partOf, Natural Language Understanding>
+<Speech Analytics, connectedTo, Acoustic Modeling>
+<Speech Analytics, connectedTo, Cross_Lingual Speech Recognition>
+<Speech Analytics, connectedTo, Meeting Transcription>
+<Speech Data Annotation, connectedTo, Contextual Understanding>
+<Speech Data Annotation, connectedTo, Dialect Adaptation>
+<Speech Emotion Recognition, connectedTo, Voice Activity Detection>
+<Speech Emotion Recognition, partOf, Natural Language Understanding>
+<Speech_to_Text Conversion, connectedTo, Language Modeling>
+<Speech_to_Text Conversion, partOf, Disordered Speech Recognition>
+<Text_to_Speech Synthesis, connectedTo, Speaker Diarization>
+<Voice Activity Detection, connectedTo, Contextual Understanding>
+<Voice Activity Detection, partOf, Natural Language Understanding>
+<Voice Search Optimization, connectedTo, Accent Recognition>
+<Voice Search Optimization, connectedTo, Speech Data Annotation>
diff --git a/train/mermaid/hard/mermaid_870.mmd b/train/mermaid/hard/mermaid_870.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d8a7350f8958531cd321395fcbe1fe399e2fbf0d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_870.mmd
@@ -0,0 +1,148 @@
+graph TD
+    N0([Speech Emotion Recognition])
+    N1([Phonetic Transcription])
+    N2(Emotion Recognition from Voice)
+    N3(Voice User Interface Design)
+    N4([Natural Language Understanding])
+    N5(Cross_Lingual Speech Recognition)
+    N6[[Voice Biometrics]]
+    N7[(Medical Transcription)]
+    N8[[Contextual Understanding]]
+    N9[(Speaker Identification)]
+    N10(Speech Analytics)
+    N11[Command and Control]
+    N12[Real_Time Captioning]
+    N13(Noise Reduction)
+    N14[Text_to_Speech Synthesis]
+    N15([end])
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Legal Transcription
+        nest0_0{Voice Assistant Development}
+        nest0_1[/Accent Recognition/]
+        nest0_2(Keyword Spotting)
+    end
+    subgraph Embedded Speech Recognition
+        nest1_0([Linguistic Analysis])
+        nest1_1[Disordered Speech Recognition]
+        nest1_2([Prosody Analysis])
+        nest1_3{Automatic Speech Recognition}
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> |cleans| N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> |converts| nest0_2
+    N7 --> nest0_0
+    nest0_2 -.-> N11
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N7 --> nest1_0
+    nest1_3 -.-> N15
+    N2 -.-> S1
+    S1 --> N8
+    S1 --> N6
+    S1 --> N5
+    N11 -.-> S2
+    S2 --> N15
+    S2 --> |filters| N13
+    S2 -.-> N14
+    N1 -.-> M0
+    N0 --> M0
+    N2 --> M0
+    M0 --> N4
+    N0 -.-> M1
+    N1 -.-> M1
+    M1 -.-> N3
+    N1 -.-> M2
+    N10 --> M2
+    N3 -.-> M2
+    M2 --> N14
+    style N0 fill:#EFE6FF,stroke:#C2B2F0
+    style N1 fill:#C8EDFF,stroke:#82DAFF
+    style N2 fill:#EFE6FF,stroke:#C2B2F0
+    style N3 fill:#C8EDFF,stroke:#82DAFF
+    style N4 fill:#EFE6FF,stroke:#C2B2F0
+    style N5 fill:#EFE6FF,stroke:#C2B2F0
+    style N6 fill:#C8EDFF,stroke:#82DAFF
+    style N7 fill:#C8EDFF,stroke:#82DAFF
+    style N8 fill:#E1F5FE,stroke:#4FC3F7
+    style N9 fill:#C8EDFF,stroke:#82DAFF
+    style N10 fill:#EFE6FF,stroke:#C2B2F0
+    style N11 fill:#EFE6FF,stroke:#C2B2F0
+    style N12 fill:#C8EDFF,stroke:#82DAFF
+    style N13 fill:#E1F5FE,stroke:#4FC3F7
+    style N14 fill:#E1F5FE,stroke:#4FC3F7
+    style N15 fill:#E1F5FE,stroke:#4FC3F7
+    style S1 fill:#E1F5FE,stroke:#4FC3F7
+    style S2 fill:#E1F5FE,stroke:#4FC3F7
+    style M0 fill:#E1F5FE,stroke:#4FC3F7
+    style M1 fill:#C8EDFF,stroke:#82DAFF
+    style M2 fill:#E1F5FE,stroke:#4FC3F7
+    style nest0_0 fill:#EFE6FF,stroke:#C2B2F0
+    style nest0_1 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_2 fill:#E1F5FE,stroke:#4FC3F7
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+    style nest1_1 fill:#C8EDFF,stroke:#82DAFF
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+    style nest1_3 fill:#EFE6FF,stroke:#C2B2F0
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+    linkStyle 42 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_870.txt b/train/mermaid/hard/mermaid_870.txt
new file mode 100644
index 0000000000000000000000000000000000000000..f4023c675297e8a577b1dc7aea7c60814061302e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_870.txt
@@ -0,0 +1,45 @@
+<Accent Recognition, converts, Keyword Spotting>
+<Accent Recognition, partOf, Legal Transcription>
+<Automatic Speech Recognition, connectedTo, end>
+<Automatic Speech Recognition, partOf, Embedded Speech Recognition>
+<Command and Control, connectedTo, Real_Time Captioning>
+<Command and Control, connectedTo, Text_to_Speech Synthesis>
+<Command and Control, connectedTo, end>
+<Command and Control, filters, Noise Reduction>
+<Contextual Understanding, connectedTo, Speaker Identification>
+<Cross_Lingual Speech Recognition, connectedTo, Voice Biometrics>
+<Disordered Speech Recognition, connectedTo, Prosody Analysis>
+<Disordered Speech Recognition, partOf, Embedded Speech Recognition>
+<Emotion Recognition from Voice, connectedTo, Contextual Understanding>
+<Emotion Recognition from Voice, connectedTo, Cross_Lingual Speech Recognition>
+<Emotion Recognition from Voice, connectedTo, Natural Language Understanding>
+<Emotion Recognition from Voice, connectedTo, Voice Biometrics>
+<Emotion Recognition from Voice, connectedTo, Voice User Interface Design>
+<Keyword Spotting, connectedTo, Command and Control>
+<Keyword Spotting, partOf, Legal Transcription>
+<Linguistic Analysis, connectedTo, Disordered Speech Recognition>
+<Linguistic Analysis, partOf, Embedded Speech Recognition>
+<Medical Transcription, connectedTo, Contextual Understanding>
+<Medical Transcription, connectedTo, Linguistic Analysis>
+<Medical Transcription, connectedTo, Voice Assistant Development>
+<Natural Language Understanding, connectedTo, Cross_Lingual Speech Recognition>
+<Noise Reduction, connectedTo, Text_to_Speech Synthesis>
+<Phonetic Transcription, connectedTo, Emotion Recognition from Voice>
+<Phonetic Transcription, connectedTo, Natural Language Understanding>
+<Phonetic Transcription, connectedTo, Text_to_Speech Synthesis>
+<Phonetic Transcription, connectedTo, Voice User Interface Design>
+<Prosody Analysis, connectedTo, Automatic Speech Recognition>
+<Prosody Analysis, partOf, Embedded Speech Recognition>
+<Real_Time Captioning, connectedTo, Noise Reduction>
+<Speaker Identification, connectedTo, Speech Analytics>
+<Speech Analytics, connectedTo, Command and Control>
+<Speech Analytics, connectedTo, Text_to_Speech Synthesis>
+<Speech Emotion Recognition, connectedTo, Natural Language Understanding>
+<Speech Emotion Recognition, connectedTo, Phonetic Transcription>
+<Speech Emotion Recognition, connectedTo, Voice User Interface Design>
+<Text_to_Speech Synthesis, connectedTo, end>
+<Voice Assistant Development, connectedTo, Accent Recognition>
+<Voice Assistant Development, partOf, Legal Transcription>
+<Voice Biometrics, connectedTo, Medical Transcription>
+<Voice User Interface Design, cleans, Natural Language Understanding>
+<Voice User Interface Design, connectedTo, Text_to_Speech Synthesis>
diff --git a/train/mermaid/hard/mermaid_871.txt b/train/mermaid/hard/mermaid_871.txt
new file mode 100644
index 0000000000000000000000000000000000000000..860b7fd95e25b13d2b28a7ce99c50c5fd6cc8022
--- /dev/null
+++ b/train/mermaid/hard/mermaid_871.txt
@@ -0,0 +1,44 @@
+<Automatic Speech Recognition, connectedTo, Linguistic Analysis>
+<Cloud_based Speech Services, connectedTo, Emotion Recognition from Voice>
+<Dialect Adaptation, connectedTo, Automatic Speech Recognition>
+<Dialect Adaptation, connectedTo, Emotion Recognition from Voice>
+<Disordered Speech Recognition, connectedTo, Cloud_based Speech Services>
+<Embedded Speech Recognition, connectedTo, Phonetic Transcription>
+<Embedded Speech Recognition, connectedTo, Speech Analytics>
+<Embedded Speech Recognition, connectedTo, end>
+<Embedded Speech Recognition, develops, Linguistic Analysis>
+<Embedded Speech Recognition, recognizes, Legal Transcription>
+<Emotion Recognition from Voice, connectedTo, Speech Data Annotation>
+<Keyword Spotting, connectedTo, Meeting Transcription>
+<Keyword Spotting, monitors, end>
+<Legal Transcription, connectedTo, Security Authentication>
+<Legal Transcription, connectedTo, end>
+<Linguistic Analysis, connectedTo, Emotion Recognition from Voice>
+<Linguistic Analysis, connectedTo, Phonetic Transcription>
+<Medical Transcription, filters, Noise Reduction>
+<Medical Transcription, partOf, Call Center Automation>
+<Meeting Transcription, connectedTo, Speaker Diarization>
+<Meeting Transcription, partOf, Acoustic Modeling>
+<Multimodal Speech Processing, partOf, Call Center Automation>
+<Multimodal Speech Processing, sells, Natural Language Understanding>
+<Natural Language Understanding, connectedTo, Medical Transcription>
+<Natural Language Understanding, partOf, Call Center Automation>
+<Noise Reduction, builds, end>
+<Noise Reduction, connectedTo, Disordered Speech Recognition>
+<Phonetic Transcription, supports, Noise Reduction>
+<Real_Time Captioning, connectedTo, Voice Search Optimization>
+<Real_Time Captioning, partOf, Acoustic Modeling>
+<Security Authentication, connectedTo, Automatic Speech Recognition>
+<Security Authentication, connectedTo, Multimodal Speech Processing>
+<Security Authentication, connectedTo, Phonetic Transcription>
+<Security Authentication, connectedTo, Speech Analytics>
+<Security Authentication, connectedTo, Voice Search Optimization>
+<Speaker Diarization, connectedTo, Real_Time Captioning>
+<Speaker Diarization, partOf, Acoustic Modeling>
+<Speech Analytics, connectedTo, Emotion Recognition from Voice>
+<Speech Analytics, connectedTo, Voice Search Optimization>
+<Speech Data Annotation, connectedTo, Keyword Spotting>
+<Voice Search Optimization, connectedTo, Automatic Speech Recognition>
+<Voice Search Optimization, connectedTo, Dialect Adaptation>
+<Voice Search Optimization, connectedTo, Emotion Recognition from Voice>
+<Voice Search Optimization, connectedTo, Keyword Spotting>
diff --git a/train/mermaid/hard/mermaid_874.txt b/train/mermaid/hard/mermaid_874.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b7183bd7b9228d2bbeed2343d048876e50f5eadc
--- /dev/null
+++ b/train/mermaid/hard/mermaid_874.txt
@@ -0,0 +1,40 @@
+<Author Attribution, connectedTo, Document Summarization>
+<Automated Content Tagging, connectedTo, Chatbot Development>
+<Chatbot Development, connectedTo, Author Attribution>
+<Concept Extraction, connectedTo, Plagiarism Detection>
+<Corpus Creation, connectedTo, Information Extraction>
+<Corpus Creation, connectedTo, Plagiarism Detection>
+<Deep Learning for NLP, connectedTo, Named Entity Recognition>
+<Deep Learning for NLP, connectedTo, Spam Detection>
+<Document Summarization, connectedTo, Machine Learning for Text Mining>
+<Document Summarization, connectedTo, Part_of_Speech Tagging>
+<Document Summarization, develops_algorithms, Legal Document Analysis>
+<Information Extraction, categorizes, Plagiarism Detection>
+<Information Extraction, connectedTo, Concept Extraction>
+<Information Extraction, connectedTo, Legal Document Analysis>
+<Information Extraction, connectedTo, Plagiarism Detection>
+<Information Extraction, interprets, Legal Document Analysis>
+<Information Extraction, transforms_data, Knowledge Graph Construction>
+<Knowledge Graph Construction, connectedTo, Text Classification>
+<Lemmatization or Stemming, connectedTo, Text Preprocessing>
+<Lemmatization or Stemming, partOf, Opinion Mining>
+<Machine Learning for Text Mining, builds_tools, Part_of_Speech Tagging>
+<Named Entity Recognition, connectedTo, Vector Space Models>
+<Named Entity Recognition, partOf, Biomedical Text Mining>
+<Part_of_Speech Tagging, connectedTo, Text Clustering>
+<Patent Analysis, connectedTo, Chatbot Development>
+<Patent Analysis, partOf, Biomedical Text Mining>
+<Plagiarism Detection, connectedTo, Automated Content Tagging>
+<Spam Detection, connectedTo, Corpus Creation>
+<Spam Detection, connectedTo, Plagiarism Detection>
+<Text Classification, connectedTo, Concept Extraction>
+<Text Clustering, reports, Legal Document Analysis>
+<Text Preprocessing, connectedTo, Text Visualization>
+<Text Preprocessing, partOf, Opinion Mining>
+<Text Similarity Analysis, connectedTo, Patent Analysis>
+<Text Similarity Analysis, partOf, Biomedical Text Mining>
+<Text Visualization, connectedTo, Deep Learning for NLP>
+<Text Visualization, connectedTo, Lemmatization or Stemming>
+<Vector Space Models, connectedTo, Text Similarity Analysis>
+<Vector Space Models, partOf, Biomedical Text Mining>
+<start, connectedTo, Text Visualization>
diff --git a/train/mermaid/hard/mermaid_875.txt b/train/mermaid/hard/mermaid_875.txt
new file mode 100644
index 0000000000000000000000000000000000000000..b619fde974c64343facf676c0b810cea7c750e8d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_875.txt
@@ -0,0 +1,39 @@
+<Annotation Tools, connectedTo, Deep Learning for NLP>
+<Author Attribution, connectedTo, Text Visualization>
+<Chatbot Development, connectedTo, Automated Content Tagging>
+<Data Cleaning for Text, connectedTo, Document Summarization>
+<Data Cleaning for Text, partOf, Natural Language Processing>
+<Deep Learning for NLP, connectedTo, Text Similarity Analysis>
+<Document Summarization, connectedTo, Text Preprocessing>
+<Document Summarization, partOf, Natural Language Processing>
+<Information Extraction, connectedTo, Chatbot Development>
+<Information Extraction, connectedTo, Resume Parsing>
+<Knowledge Graph Construction, connectedTo, Data Cleaning for Text>
+<Knowledge Graph Construction, connectedTo, Spam Detection>
+<Language Translation for Text Mining, connectedTo, Deep Learning for NLP>
+<Language Translation for Text Mining, connectedTo, Knowledge Graph Construction>
+<Lemmatization or Stemming, connectedTo, Annotation Tools>
+<Lemmatization or Stemming, connectedTo, Chatbot Development>
+<Lemmatization or Stemming, connectedTo, Deep Learning for NLP>
+<Lemmatization or Stemming, connectedTo, Information Extraction>
+<Lemmatization or Stemming, connectedTo, Text Similarity Analysis>
+<News Article Analysis, connectedTo, Annotation Tools>
+<News Article Analysis, connectedTo, Author Attribution>
+<News Article Analysis, connectedTo, Chatbot Development>
+<News Article Analysis, connectedTo, Deep Learning for NLP>
+<News Article Analysis, connectedTo, Knowledge Graph Construction>
+<News Article Analysis, connectedTo, Text Visualization>
+<Opinion Mining, connectedTo, Social Media Text Analysis>
+<Opinion Mining, partOf, Topic Modeling>
+<Patent Analysis, connectedTo, Opinion Mining>
+<Patent Analysis, partOf, Topic Modeling>
+<Resume Parsing, connectedTo, Patent Analysis>
+<Resume Parsing, partOf, Topic Modeling>
+<Social Media Text Analysis, connectedTo, Text Preprocessing>
+<Social Media Text Analysis, partOf, Topic Modeling>
+<Spam Detection, connectedTo, Lemmatization or Stemming>
+<Text Preprocessing, connectedTo, News Article Analysis>
+<Text Similarity Analysis, connectedTo, Information Extraction>
+<Text Visualization, connectedTo, Language Translation for Text Mining>
+<start, connectedTo, Deep Learning for NLP>
+<start, connectedTo, Text Preprocessing>
diff --git a/train/mermaid/hard/mermaid_876.mmd b/train/mermaid/hard/mermaid_876.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..39deb11904bcc41ee7ff8b51d38b46d3266d45e9
--- /dev/null
+++ b/train/mermaid/hard/mermaid_876.mmd
@@ -0,0 +1,103 @@
+graph LR
+    N0([start])
+    N1[Corpus Creation]
+    N2[(Information Extraction)]
+    N3[[Sentiment Analysis]]
+    N4{Machine Learning for Text Mining}
+    N5[Resume Parsing]
+    N6(Automated Content Tagging)
+    N7[Deep Learning for NLP]
+    N8[[Relationship Extraction]]
+    N9[(Customer Feedback Analysis)]
+    N10{Part_of_Speech Tagging}
+    N11{Text Clustering}
+    N12[[Named Entity Recognition]]
+    N13[[Social Media Text Analysis]]
+    N14{Lemmatization or Stemming}
+    N15[(Spam Detection)]
+    N16[(Text Classification)]
+    N17[/Topic Modeling/]
+    N18([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Biomedical Text Mining
+        nest0_0(Data Cleaning for Text)
+        nest0_1{Concept Extraction}
+    end
+    subgraph Vector Space Models
+        nest1_0[Regular Expressions for Text]
+        nest1_1(Plagiarism Detection)
+    end
+    N0 -.-> |no| N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> |yes| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> |no| N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 -.-> N16
+    N16 --> N17
+    N17 --> N18
+    nest0_0 --> nest0_1
+    N9 -.-> nest0_0
+    nest0_1 --> N10
+    nest1_0 --> nest1_1
+    N12 --> nest1_0
+    nest1_1 -.-> N13
+    N5 -.-> S0
+    S0 -.-> N8
+    S0 --> |no| N9
+    S0 --> N15
+    N13 -.-> S1
+    S1 --> |yes| N15
+    S1 --> N16
+    N8 --> M0
+    N11 --> M0
+    M0 --> N13
+    style S0 fill:#DDCEDD,stroke:#AF56A6
+    style S1 fill:#DDCEDD,stroke:#AF56A6
+    style M0 fill:#DDCEDD,stroke:#AF56A6
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F44336,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#AF56A6,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_876.txt b/train/mermaid/hard/mermaid_876.txt
new file mode 100644
index 0000000000000000000000000000000000000000..bfdf7b1b680a81f3d9caf6bd15b83ffcca03b484
--- /dev/null
+++ b/train/mermaid/hard/mermaid_876.txt
@@ -0,0 +1,35 @@
+<Automated Content Tagging, connectedTo, Deep Learning for NLP>
+<Concept Extraction, connectedTo, Part_of_Speech Tagging>
+<Concept Extraction, partOf, Biomedical Text Mining>
+<Corpus Creation, connectedTo, Information Extraction>
+<Customer Feedback Analysis, connectedTo, Data Cleaning for Text>
+<Customer Feedback Analysis, connectedTo, Part_of_Speech Tagging>
+<Data Cleaning for Text, connectedTo, Concept Extraction>
+<Data Cleaning for Text, partOf, Biomedical Text Mining>
+<Deep Learning for NLP, connectedTo, Relationship Extraction>
+<Information Extraction, connectedTo, Sentiment Analysis>
+<Lemmatization or Stemming, connectedTo, Spam Detection>
+<Machine Learning for Text Mining, connectedTo, Resume Parsing>
+<Named Entity Recognition, connectedTo, Regular Expressions for Text>
+<Named Entity Recognition, connectedTo, Social Media Text Analysis>
+<Part_of_Speech Tagging, connectedTo, Text Clustering>
+<Plagiarism Detection, connectedTo, Social Media Text Analysis>
+<Plagiarism Detection, partOf, Vector Space Models>
+<Regular Expressions for Text, connectedTo, Plagiarism Detection>
+<Regular Expressions for Text, partOf, Vector Space Models>
+<Relationship Extraction, connectedTo, Social Media Text Analysis>
+<Relationship Extraction, yes, Customer Feedback Analysis>
+<Resume Parsing, connectedTo, Automated Content Tagging>
+<Resume Parsing, connectedTo, Relationship Extraction>
+<Resume Parsing, connectedTo, Spam Detection>
+<Resume Parsing, no, Customer Feedback Analysis>
+<Sentiment Analysis, connectedTo, Machine Learning for Text Mining>
+<Social Media Text Analysis, connectedTo, Lemmatization or Stemming>
+<Social Media Text Analysis, connectedTo, Text Classification>
+<Social Media Text Analysis, yes, Spam Detection>
+<Spam Detection, connectedTo, Text Classification>
+<Text Classification, connectedTo, Topic Modeling>
+<Text Clustering, connectedTo, Social Media Text Analysis>
+<Text Clustering, no, Named Entity Recognition>
+<Topic Modeling, connectedTo, end>
+<start, no, Corpus Creation>
diff --git a/train/mermaid/hard/mermaid_877.mmd b/train/mermaid/hard/mermaid_877.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c3270d76ddfd5504be444f63bb36083744ef5408
--- /dev/null
+++ b/train/mermaid/hard/mermaid_877.mmd
@@ -0,0 +1,92 @@
+graph BT
+    N0([start])
+    N1[/Opinion Mining/]
+    N2[(Patent Analysis)]
+    N3[/Chatbot Development/]
+    N4([Annotation Tools])
+    N5[/Keyword Extraction/]
+    N6(Regular Expressions for Text)
+    N7[Plagiarism Detection]
+    S0(( ))
+    M1(( ))
+    subgraph Relationship Extraction
+        nest0_0(Data Cleaning for Text)
+        nest0_1[Sentiment Analysis]
+        nest0_2[Automated Content Tagging]
+    end
+    subgraph Resume Parsing
+        nest1_0{Text Clustering}
+        nest1_1[/Corpus Creation/]
+        nest1_2(Tokenization)
+        nest1_3([Author Attribution])
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> |predicts| N6
+    N6 --> N7
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N6 --> nest0_0
+    nest0_2 -.-> N5
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N6 --> nest1_0
+    nest1_3 -.-> N3
+    N4 -.-> S0
+    S0 --> N7
+    S0 --> |disambiguates| N6
+    N0 -.-> M1
+    N1 --> |transforms_data| M1
+    M1 -.-> N4
+    N4 --> |applies| nest1_2
+    N3 -.-> N6
+    nest0_1 -.-> N7
+    N3 -.-> N1
+    style N0 fill:#FFFDE7,stroke:#FBC02D
+    style N1 fill:#F8BBD0,stroke:#E91E63
+    style N2 fill:#F8BBD0,stroke:#E91E63
+    style N3 fill:#FFFDE7,stroke:#FBC02D
+    style N4 fill:#FFFDE7,stroke:#FBC02D
+    style N5 fill:#FFF8E1,stroke:#FFD54F
+    style N6 fill:#FFF8E1,stroke:#FFD54F
+    style N7 fill:#F8BBD0,stroke:#E91E63
+    style S0 fill:#FFFDE7,stroke:#FBC02D
+    style M1 fill:#F8BBD0,stroke:#E91E63
+    style nest0_0 fill:#F8BBD0,stroke:#E91E63
+    style nest0_1 fill:#FFFDE7,stroke:#FBC02D
+    style nest0_2 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_0 fill:#F8BBD0,stroke:#E91E63
+    style nest1_1 fill:#FFFDE7,stroke:#FBC02D
+    style nest1_2 fill:#F8BBD0,stroke:#E91E63
+    style nest1_3 fill:#F8BBD0,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFD54F,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFD54F,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_879.txt b/train/mermaid/hard/mermaid_879.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a2209fd4dd8d512b826a6354f0bd16128b43d736
--- /dev/null
+++ b/train/mermaid/hard/mermaid_879.txt
@@ -0,0 +1,41 @@
+<Automated Content Tagging, connectedTo, Text Preprocessing>
+<Automated Content Tagging, partOf, Annotation Tools>
+<Chatbot Development, connectedTo, Resume Parsing>
+<Concept Extraction, connectedTo, Chatbot Development>
+<Concept Extraction, connectedTo, Legal Document Analysis>
+<Concept Extraction, connectedTo, Part_of_Speech Tagging>
+<Corpus Creation, connectedTo, Concept Extraction>
+<Corpus Creation, partOf, Information Extraction>
+<Customer Feedback Analysis, connectedTo, Tokenization>
+<Language Translation for Text Mining, connectedTo, Regular Expressions for Text>
+<Lemmatization or Stemming, connectedTo, Customer Feedback Analysis>
+<Lemmatization or Stemming, connectedTo, Legal Document Analysis>
+<Machine Learning for Text Mining, connectedTo, Lemmatization or Stemming>
+<Part_of_Speech Tagging, connectedTo, Language Translation for Text Mining>
+<Plagiarism Detection, connectedTo, Legal Document Analysis>
+<Plagiarism Detection, connectedTo, Text Preprocessing>
+<Regular Expressions for Text, connectedTo, Legal Document Analysis>
+<Regular Expressions for Text, connectedTo, Lemmatization or Stemming>
+<Regular Expressions for Text, connectedTo, Machine Learning for Text Mining>
+<Regular Expressions for Text, connectedTo, Resume Parsing>
+<Regular Expressions for Text, connectedTo, Text Similarity Analysis>
+<Regular Expressions for Text, connectedTo, Tokenization>
+<Relationship Extraction, connectedTo, Plagiarism Detection>
+<Relationship Extraction, connectedTo, Text Preprocessing>
+<Resume Parsing, connectedTo, Legal Document Analysis>
+<Spam Detection, connectedTo, Corpus Creation>
+<Spam Detection, partOf, Information Extraction>
+<Text Clustering, connectedTo, Automated Content Tagging>
+<Text Clustering, partOf, Annotation Tools>
+<Text Preprocessing, connectedTo, Legal Document Analysis>
+<Text Preprocessing, connectedTo, Lemmatization or Stemming>
+<Text Preprocessing, connectedTo, Part_of_Speech Tagging>
+<Text Preprocessing, connectedTo, Resume Parsing>
+<Text Preprocessing, connectedTo, Topic Modeling>
+<Text Similarity Analysis, connectedTo, Text Clustering>
+<Text Similarity Analysis, partOf, Annotation Tools>
+<Tokenization, connectedTo, Chatbot Development>
+<Topic Modeling, connectedTo, Concept Extraction>
+<Topic Modeling, connectedTo, Spam Detection>
+<start, connectedTo, Relationship Extraction>
+<start, connectedTo, Text Preprocessing>
diff --git a/train/mermaid/hard/mermaid_88.mmd b/train/mermaid/hard/mermaid_88.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..c088e5324564d084cd6692c5d94765c682c78252
--- /dev/null
+++ b/train/mermaid/hard/mermaid_88.mmd
@@ -0,0 +1,126 @@
+graph RL
+    N0([start])
+    N1[[Seedling Transplanting]]
+    N2(Weather Tracking)
+    N3(Subsidy Application)
+    N4[[Market Transportation]]
+    N5[Organic Certification]
+    N6[[Fencing Installation]]
+    N7[/Barn Cleaning/]
+    N8(Produce Sorting)
+    N9(Storage)
+    N10{Agricultural Research}
+    N11(Harvesting)
+    N12[(Drone Scouting)]
+    N13[Hydroponic System Management]
+    N14([Weed Removal])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Livestock Feeding
+        nest0_0[[Equipment Repair]]
+        nest0_1(Traceability System)
+    end
+    subgraph Disease Detection
+        nest1_0(Aquaculture Farming)
+        nest1_1(Irrigation Scheduling)
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> |monitors| N10
+    N10 --> N11
+    N11 -.-> |licenses| N12
+    N12 --> N13
+    N13 -.-> N14
+    nest0_0 -.-> |manages| nest0_1
+    N13 --> nest0_0
+    nest0_1 -.-> N10
+    nest1_0 --> nest1_1
+    N9 --> nest1_0
+    nest1_1 -.-> |predicts| N8
+    N6 -.-> S0
+    S0 --> |tracks| N10
+    S0 --> N12
+    S0 --> N11
+    N6 --> S1
+    S1 --> N12
+    S1 -.-> N10
+    S1 --> |controls| N13
+    S1 -.-> N14
+    N2 -.-> M0
+    N7 -.-> |removes| M0
+    N6 --> M0
+    M0 --> N10
+    N3 --> M2
+    N2 -.-> M2
+    N1 --> M2
+    M2 -.-> N10
+    style N0 fill:#EFE6FF,stroke:#C2B2F0
+    style N1 fill:#C9F0F0,stroke:#4DD0E1
+    style N2 fill:#B2EBF2,stroke:#00BCD4
+    style N3 fill:#C9F0F0,stroke:#4DD0E1
+    style N4 fill:#C9F0F0,stroke:#4DD0E1
+    style N5 fill:#B2EBF2,stroke:#00BCD4
+    style N6 fill:#C9F0F0,stroke:#4DD0E1
+    style N7 fill:#B2EBF2,stroke:#00BCD4
+    style N8 fill:#C9F0F0,stroke:#4DD0E1
+    style N9 fill:#C9F0F0,stroke:#4DD0E1
+    style N10 fill:#B2EBF2,stroke:#00BCD4
+    style N11 fill:#EFE6FF,stroke:#C2B2F0
+    style N12 fill:#C9F0F0,stroke:#4DD0E1
+    style N13 fill:#B2EBF2,stroke:#00BCD4
+    style N14 fill:#C9F0F0,stroke:#4DD0E1
+    style S0 fill:#EFE6FF,stroke:#C2B2F0
+    style S1 fill:#C9F0F0,stroke:#4DD0E1
+    style M0 fill:#C9F0F0,stroke:#4DD0E1
+    style M2 fill:#EFE6FF,stroke:#C2B2F0
+    style nest0_0 fill:#B2EBF2,stroke:#00BCD4
+    style nest0_1 fill:#C9F0F0,stroke:#4DD0E1
+    style nest1_0 fill:#C9F0F0,stroke:#4DD0E1
+    style nest1_1 fill:#B2EBF2,stroke:#00BCD4
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_88.txt b/train/mermaid/hard/mermaid_88.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a588543af1a9283d3c447bbfd2eb692fca0ac0f0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_88.txt
@@ -0,0 +1,34 @@
+<Agricultural Research, connectedTo, Harvesting>
+<Aquaculture Farming, connectedTo, Irrigation Scheduling>
+<Aquaculture Farming, partOf, Disease Detection>
+<Barn Cleaning, connectedTo, Produce Sorting>
+<Barn Cleaning, removes, Agricultural Research>
+<Drone Scouting, connectedTo, Hydroponic System Management>
+<Equipment Repair, manages, Traceability System>
+<Equipment Repair, partOf, Livestock Feeding>
+<Fencing Installation, connectedTo, Agricultural Research>
+<Fencing Installation, connectedTo, Barn Cleaning>
+<Fencing Installation, connectedTo, Drone Scouting>
+<Fencing Installation, connectedTo, Harvesting>
+<Fencing Installation, connectedTo, Weed Removal>
+<Fencing Installation, controls, Hydroponic System Management>
+<Fencing Installation, tracks, Agricultural Research>
+<Harvesting, licenses, Drone Scouting>
+<Hydroponic System Management, connectedTo, Equipment Repair>
+<Hydroponic System Management, connectedTo, Weed Removal>
+<Irrigation Scheduling, partOf, Disease Detection>
+<Irrigation Scheduling, predicts, Produce Sorting>
+<Market Transportation, connectedTo, Organic Certification>
+<Organic Certification, connectedTo, Fencing Installation>
+<Produce Sorting, connectedTo, Storage>
+<Seedling Transplanting, connectedTo, Agricultural Research>
+<Seedling Transplanting, connectedTo, Weather Tracking>
+<Storage, connectedTo, Aquaculture Farming>
+<Storage, monitors, Agricultural Research>
+<Subsidy Application, connectedTo, Agricultural Research>
+<Subsidy Application, connectedTo, Market Transportation>
+<Traceability System, connectedTo, Agricultural Research>
+<Traceability System, partOf, Livestock Feeding>
+<Weather Tracking, connectedTo, Agricultural Research>
+<Weather Tracking, connectedTo, Subsidy Application>
+<start, connectedTo, Seedling Transplanting>
diff --git a/train/mermaid/hard/mermaid_882.mmd b/train/mermaid/hard/mermaid_882.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..562c9427143e931b5fb29b753a280898c5c6b986
--- /dev/null
+++ b/train/mermaid/hard/mermaid_882.mmd
@@ -0,0 +1,98 @@
+graph TD
+    N0([start])
+    N1(Remote Control Capabilities)
+    N2[[Autonomous Operations]]
+    N3[Sensor Data Integration]
+    N4[(Virtual Prototyping)]
+    N5([Cyber_Physical Systems])
+    N6(Data Governance for Twins)
+    N7[Predictive Maintenance]
+    N8[[Simulation and Prediction]]
+    N9(Automotive Digital Twins)
+    N10[/IoT Data Ingestion/]
+    N11([Performance Monitoring])
+    N12[[Healthcare Digital Twins]]
+    N13([Anomaly Detection])
+    N14([end])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Design Validation
+        nest0_0[[Risk Assessment]]
+        nest0_1(Augmented Reality Visualization)
+    end
+    subgraph What_If Scenario Analysis
+        nest1_0(Maintenance Scheduling)
+        nest1_1(System Integration Architecture)
+        nest1_2[Model Creation]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 --> |no| N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> |no| N13
+    N13 --> N14
+    nest0_0 -.-> nest0_1
+    N9 -.-> nest0_0
+    nest0_1 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N1 -.-> nest1_0
+    nest1_2 -.-> N13
+    N7 --> S0
+    S0 -.-> N14
+    S0 --> N10
+    S0 -.-> N13
+    N5 -.-> S1
+    S1 --> N14
+    S1 --> N13
+    S1 --> N11
+    N3 --> M1
+    N4 -.-> M1
+    N2 -.-> M1
+    M1 --> N6
+    style S0 fill:#FCE4EC,stroke:#E91E63
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style M1 fill:#C8E6C9,stroke:#4CAF50
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_885.txt b/train/mermaid/hard/mermaid_885.txt
new file mode 100644
index 0000000000000000000000000000000000000000..343a553c1d205de41f1a4017811f3e17c0f5abbf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_885.txt
@@ -0,0 +1,45 @@
+<AI or ML Model Integration, connectedTo, Healthcare Digital Twins>
+<AI or ML Model Integration, connectedTo, Simulation Platform Development>
+<Aerospace Digital Twins, connectedTo, Cyber_Physical Systems>
+<Aerospace Digital Twins, connectedTo, System Integration Architecture>
+<Asset Optimization, connectedTo, Autonomous Operations>
+<Asset Optimization, connectedTo, Simulation Platform Development>
+<Automotive Digital Twins, connectedTo, Sensor Data Integration>
+<Autonomous Operations, connectedTo, Aerospace Digital Twins>
+<Condition Monitoring, connectedTo, Design Validation>
+<Condition Monitoring, connectedTo, Digital Twin Lifecycle Management>
+<Condition Monitoring, connectedTo, Energy Consumption Optimization>
+<Condition Monitoring, connectedTo, Interoperability Standards>
+<Condition Monitoring, connectedTo, Lifecycle Management>
+<Cyber_Physical Systems, connectedTo, Data Security for Digital Twins>
+<Data Security for Digital Twins, AR or VR_enables, Lifecycle Management>
+<Data Security for Digital Twins, connectedTo, Digital Twin Lifecycle Management>
+<Data Security for Digital Twins, connectedTo, Simulation Platform Development>
+<Data Security for Digital Twins, connectedTo, What_If Scenario Analysis>
+<Design Validation, deploys, Lifecycle Management>
+<Digital Twin Lifecycle Management, connectedTo, Energy Consumption Optimization>
+<Edge Computing for Twins, connectedTo, Cyber_Physical Systems>
+<Edge Computing for Twins, partOf, Virtual Reality Interaction>
+<Energy Consumption Optimization, connectedTo, Design Validation>
+<Healthcare Digital Twins, connectedTo, Simulation and Prediction>
+<Healthcare Digital Twins, partOf, Anomaly Detection>
+<IoT Data Ingestion, connectedTo, AI or ML Model Integration>
+<Lifecycle Management, connectedTo, Interoperability Standards>
+<Maintenance Scheduling, connectedTo, Condition Monitoring>
+<Maintenance Scheduling, connectedTo, Digital Twin Lifecycle Management>
+<Operational Planning, connectedTo, Asset Optimization>
+<Operational Planning, connectedTo, Digital Twin Lifecycle Management>
+<Sensor Data Integration, connectedTo, Digital Twin Lifecycle Management>
+<Sensor Data Integration, connectedTo, Lifecycle Management>
+<Sensor Data Integration, connectedTo, Operational Planning>
+<Sensor Data Integration, connectedTo, Simulation Platform Development>
+<Simulation Platform Development, connectedTo, Maintenance Scheduling>
+<Simulation and Prediction, connectedTo, Digital Twin Lifecycle Management>
+<Simulation and Prediction, partOf, Anomaly Detection>
+<System Integration Architecture, connectedTo, Virtual Prototyping>
+<System Integration Architecture, partOf, Virtual Reality Interaction>
+<Virtual Prototyping, connectedTo, Edge Computing for Twins>
+<Virtual Prototyping, partOf, Virtual Reality Interaction>
+<What_If Scenario Analysis, connectedTo, IoT Data Ingestion>
+<start, connectedTo, Automotive Digital Twins>
+<start, connectedTo, Lifecycle Management>
diff --git a/train/mermaid/hard/mermaid_887.mmd b/train/mermaid/hard/mermaid_887.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1085ed7bc8435a38fe4d416bbd7ef1f8589d0638
--- /dev/null
+++ b/train/mermaid/hard/mermaid_887.mmd
@@ -0,0 +1,132 @@
+graph BT
+    N0([start])
+    N1[[IoT Data Ingestion]]
+    N2[Simulation Platform Development]
+    N3{Risk Assessment}
+    N4[Maintenance Scheduling]
+    N5[/Healthcare Digital Twins/]
+    N6(System Integration Architecture)
+    N7([Automotive Digital Twins])
+    N8[Performance Monitoring]
+    N9[AI or ML Model Integration]
+    N10([Edge Computing for Twins])
+    N11[Scalability of Models]
+    N12([Augmented Reality Visualization])
+    N13[/Autonomous Operations/]
+    N14[[Digital Twin Lifecycle Management]]
+    N15[[Operational Planning]]
+    N16([Virtual Reality Interaction])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Interoperability Standards
+        nest0_0[(Lifecycle Management)]
+        nest0_1[[Data Security for Digital Twins]]
+        nest0_2[Enterprise Asset Management Integration]
+    end
+    subgraph Building Information Modeling Integration
+        nest1_0[[Model Creation]]
+        nest1_1(Cyber_Physical Systems)
+        nest1_2[Sensor Data Integration]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> |deploys| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    N12 --> |builds| N13
+    N13 -.-> N14
+    N14 --> |visualizes| N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N15 -.-> nest0_0
+    nest0_2 --> N13
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N11 --> nest1_0
+    nest1_2 -.-> N12
+    N5 --> S0
+    S0 -.-> N13
+    S0 -.-> N15
+    N13 -.-> S1
+    S1 -.-> N16
+    S1 --> |machine_learning_uses| N15
+    N0 -.-> M0
+    N1 --> M0
+    M0 --> N3
+    N4 -.-> M1
+    N0 -.-> M1
+    M1 --> N8
+    style N0 fill:#DDCEDD,stroke:#AF56A6
+    style N1 fill:#BBDEFB,stroke:#2196F3
+    style N2 fill:#E6EE9C,stroke:#CDDC39
+    style N3 fill:#DDCEDD,stroke:#AF56A6
+    style N4 fill:#BBDEFB,stroke:#2196F3
+    style N5 fill:#E6EE9C,stroke:#CDDC39
+    style N6 fill:#DDCEDD,stroke:#AF56A6
+    style N7 fill:#BBDEFB,stroke:#2196F3
+    style N8 fill:#E6EE9C,stroke:#CDDC39
+    style N9 fill:#DDCEDD,stroke:#AF56A6
+    style N10 fill:#DDCEDD,stroke:#AF56A6
+    style N11 fill:#BBDEFB,stroke:#2196F3
+    style N12 fill:#BBDEFB,stroke:#2196F3
+    style N13 fill:#E6EE9C,stroke:#CDDC39
+    style N14 fill:#DDCEDD,stroke:#AF56A6
+    style N15 fill:#DDCEDD,stroke:#AF56A6
+    style N16 fill:#DDCEDD,stroke:#AF56A6
+    style S0 fill:#BBDEFB,stroke:#2196F3
+    style S1 fill:#BBDEFB,stroke:#2196F3
+    style M0 fill:#BBDEFB,stroke:#2196F3
+    style M1 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_0 fill:#BBDEFB,stroke:#2196F3
+    style nest0_1 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_2 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_0 fill:#DDCEDD,stroke:#AF56A6
+    style nest1_1 fill:#DDCEDD,stroke:#AF56A6
+    style nest1_2 fill:#BBDEFB,stroke:#2196F3
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CDDC39,stroke-width:2px,fill:none;
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+    linkStyle 19 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#2196F3,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#2196F3,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_894.mmd b/train/mermaid/hard/mermaid_894.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..bfdac6a6d4f36202debc8f25482d75ab0ef87577
--- /dev/null
+++ b/train/mermaid/hard/mermaid_894.mmd
@@ -0,0 +1,122 @@
+graph RL
+    N0([start])
+    N1[(User Training for Automated Systems)]
+    N2{Customer Service Automation}
+    N3[(Supply Chain Automation)]
+    N4[Email Automation]
+    N5([API Automation])
+    N6([Orchestration of Processes])
+    N7[(Error Handling in Automation)]
+    N8[[Scripting for Automation]]
+    N9[/Audit Trail for Automation/]
+    N10[(HR Process Automation)]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Compliance in Automation
+        nest0_0[[Business Rule Engines]]
+        nest0_1[(Automated Testing)]
+    end
+    subgraph Automated Data Validation
+        nest1_0(Performance Monitoring of Bots)
+        nest1_1[/Integration with Existing Systems/]
+        nest1_2[Report Generation Automation]
+        nest1_3(Intelligent Automation)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> |tracks| N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 --> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N2 -.-> nest1_0
+    nest1_3 --> N9
+    N5 -.-> S0
+    S0 -.-> N10
+    S0 --> N9
+    S0 --> N8
+    S0 -.-> N7
+    N4 -.-> S1
+    S1 -.-> N7
+    S1 --> N8
+    S1 -.-> N9
+    N2 --> S2
+    S2 -.-> N4
+    S2 --> N8
+    S2 -.-> N7
+    S2 -.-> N5
+    N1 --> M1
+    N6 --> M1
+    N0 -.-> |advises| M1
+    N5 --> M1
+    M1 --> N8
+    style N0 fill:#EDE7F6,stroke:#7E57C2
+    style N1 fill:#C8E6C9,stroke:#4CAF50
+    style N2 fill:#EDE7F6,stroke:#7E57C2
+    style N3 fill:#EDE7F6,stroke:#7E57C2
+    style N4 fill:#EDE7F6,stroke:#7E57C2
+    style N5 fill:#C8E6C9,stroke:#4CAF50
+    style N6 fill:#EDE7F6,stroke:#7E57C2
+    style N7 fill:#C8E6C9,stroke:#4CAF50
+    style N8 fill:#EDE7F6,stroke:#7E57C2
+    style N9 fill:#C8E6C9,stroke:#4CAF50
+    style N10 fill:#EDE7F6,stroke:#7E57C2
+    style S0 fill:#EDE7F6,stroke:#7E57C2
+    style S1 fill:#C8E6C9,stroke:#4CAF50
+    style S2 fill:#C8E6C9,stroke:#4CAF50
+    style M1 fill:#C8E6C9,stroke:#4CAF50
+    style nest0_0 fill:#B2EBF2,stroke:#00BCD4
+    style nest0_1 fill:#B2EBF2,stroke:#00BCD4
+    style nest1_0 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_1 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_2 fill:#EDE7F6,stroke:#7E57C2
+    style nest1_3 fill:#C8E6C9,stroke:#4CAF50
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#00BCD4,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#7E57C2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#7E57C2,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_896.txt b/train/mermaid/hard/mermaid_896.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7071e4fee1b5ca2669354ba124332f703886a95b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_896.txt
@@ -0,0 +1,34 @@
+<API Automation, connectedTo, Hyperautomation>
+<Automated Data Validation, no, Scalability of Automation>
+<Automated Data Validation, partOf, Decision Automation>
+<Automated Testing, connectedTo, Business Process Management>
+<Automated Testing, connectedTo, HR Process Automation>
+<Automated Testing, connectedTo, Process Mapping>
+<Automated Testing, connectedTo, end>
+<Business Process Management, connectedTo, Security for Automation Bots>
+<Chatbot Integration, connectedTo, Automated Data Validation>
+<Chatbot Integration, partOf, Decision Automation>
+<Compliance in Automation, connectedTo, Automated Testing>
+<Data Entry Automation, connectedTo, Optical Character Recognition for Automation>
+<Data Entry Automation, partOf, Workflow Analysis>
+<Email Automation, connectedTo, end>
+<HR Process Automation, connectedTo, Email Automation>
+<Hyperautomation, connectedTo, Robotic Process Automation Implementation>
+<Hyperautomation, connectedTo, Scalability of Automation>
+<Integration with Existing Systems, connectedTo, Chatbot Integration>
+<Integration with Existing Systems, connectedTo, Workflow Automation Platforms>
+<Optical Character Recognition for Automation, connectedTo, API Automation>
+<Optical Character Recognition for Automation, partOf, Workflow Analysis>
+<Orchestration of Processes, connectedTo, Compliance in Automation>
+<Orchestration of Processes, connectedTo, HR Process Automation>
+<Orchestration of Processes, connectedTo, Process Mapping>
+<Orchestration of Processes, yes, Process Mapping>
+<Process Mapping, connectedTo, Business Process Management>
+<Robotic Process Automation Implementation, connectedTo, Data Entry Automation>
+<Robotic Process Automation Implementation, connectedTo, Integration with Existing Systems>
+<Scalability of Automation, connectedTo, Robotic Process Automation Implementation>
+<Security for Automation Bots, connectedTo, HR Process Automation>
+<Workflow Automation Platforms, connectedTo, Orchestration of Processes>
+<Workflow Automation Platforms, connectedTo, Process Mapping>
+<start, connectedTo, API Automation>
+<start, connectedTo, Robotic Process Automation Implementation>
diff --git a/train/mermaid/hard/mermaid_897.mmd b/train/mermaid/hard/mermaid_897.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..28910cfe1b5f7b5e7fc78b0212bc4e8aff8aece6
--- /dev/null
+++ b/train/mermaid/hard/mermaid_897.mmd
@@ -0,0 +1,114 @@
+graph RL
+    N0([start])
+    N1[(Root Cause Analysis)]
+    N2[(Pharmaceutical Quality Control)]
+    N3([Defect Detection])
+    N4[[Measurement System Analysis]]
+    N5([Product Testing])
+    N6[/Supplier Quality Management/]
+    N7([ISO Certification])
+    N8[/Non_Conformance Management/]
+    N9[Metrology]
+    N10(Lean Principles in Quality)
+    N11[[Corrective and Preventive Actions]]
+    N12([Trend Analysis])
+    N13[Statistical Process Control]
+    N14(Total Quality Management)
+    N15[/Supplier Audits/]
+    N16[Component Inspection]
+    N17(Non_Destructive Testing)
+    N18[[Quality Standards Development]]
+    N19([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M2(( ))
+    subgraph Continuous Improvement
+        nest0_0{Software Quality Assurance}
+        nest0_1{Quality Assurance}
+    end
+    subgraph Quality Management Systems
+        nest1_0[Inspection Procedures]
+        nest1_1[(Risk_Based Quality Control)]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 -.-> N15
+    N15 -.-> |yes| N16
+    N16 -.-> |yes| N17
+    N17 -.-> N18
+    N18 --> N19
+    nest0_0 -.-> nest0_1
+    N12 --> nest0_0
+    nest0_1 -.-> N19
+    nest1_0 --> nest1_1
+    N16 -.-> nest1_0
+    nest1_1 --> N15
+    N6 --> S0
+    S0 --> N15
+    S0 -.-> |yes| N12
+    N5 -.-> S1
+    S1 -.-> N19
+    S1 -.-> N13
+    N2 -.-> M0
+    N11 -.-> |no| M0
+    M0 -.-> N16
+    N9 -.-> M2
+    N5 --> M2
+    N8 -.-> M2
+    M2 --> N13
+    style S0 fill:#CADEDE,stroke:#94C0C0
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style M0 fill:#EFEBE9,stroke:#A1887F
+    style M2 fill:#EFEBE9,stroke:#A1887F
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#A1887F,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#4DD0E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#4DD0E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_898.mmd b/train/mermaid/hard/mermaid_898.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f82245c78b7b6de41aa688dc46562f9f26923d6d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_898.mmd
@@ -0,0 +1,134 @@
+graph RL
+    N0([Audit Planning])
+    N1(Six Sigma Methodologies)
+    N2[Continuous Improvement]
+    N3([Metrology])
+    N4[Service Quality Management]
+    N5(Quality Standards Development)
+    N6[Food Safety Quality Control]
+    N7{Quality Data Analysis}
+    N8[[Trend Analysis]]
+    N9{Inspection Procedures}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Measurement System Analysis
+        nest0_0(Total Quality Management)
+        nest0_1[Supplier Audits]
+        nest0_2[/Sampling Plans/]
+        nest0_3[Hardware Quality Testing]
+    end
+    subgraph X_ray Inspection
+        nest1_0[(Quality Planning)]
+        nest1_1[Process Monitoring]
+        nest1_2([Component Inspection])
+        nest1_3[(Software Quality Assurance)]
+    end
+    N0 --> N1
+    N1 -.-> |equipment_calibrates| N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    nest0_1 -.-> |services_assesses| nest0_2
+    nest0_2 --> |tests| nest0_3
+    N8 --> nest0_0
+    nest0_3 --> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 --> nest1_3
+    N8 -.-> nest1_0
+    nest1_3 --> N1
+    N6 --> S0
+    S0 --> N8
+    S0 -.-> N9
+    N2 --> S1
+    S1 -.-> N9
+    S1 -.-> N5
+    S1 -.-> N8
+    N1 -.-> S2
+    S2 --> N7
+    S2 -.-> N4
+    N1 -.-> M0
+    N0 --> M0
+    N2 --> |risk_manages| M0
+    M0 --> N4
+    N2 --> M1
+    N0 -.-> M1
+    M1 -.-> N7
+    N4 --> M2
+    N5 -.-> |software_implements| M2
+    N2 --> M2
+    M2 --> N7
+    style N0 fill:#F0F0F0,stroke:#D2D2D2
+    style N1 fill:#F0F0F0,stroke:#D2D2D2
+    style N2 fill:#F0F4C3,stroke:#AED581
+    style N3 fill:#F1F8E9,stroke:#388E3C
+    style N4 fill:#F1F8E9,stroke:#388E3C
+    style N5 fill:#F0F4C3,stroke:#AED581
+    style N6 fill:#F1F8E9,stroke:#388E3C
+    style N7 fill:#F1F8E9,stroke:#388E3C
+    style N8 fill:#F0F0F0,stroke:#D2D2D2
+    style N9 fill:#F0F4C3,stroke:#AED581
+    style S0 fill:#F1F8E9,stroke:#388E3C
+    style S1 fill:#F1F8E9,stroke:#388E3C
+    style S2 fill:#F0F0F0,stroke:#D2D2D2
+    style M0 fill:#F0F0F0,stroke:#D2D2D2
+    style M1 fill:#F0F0F0,stroke:#D2D2D2
+    style M2 fill:#F1F8E9,stroke:#388E3C
+    style nest0_0 fill:#F0F4C3,stroke:#AED581
+    style nest0_1 fill:#F1F8E9,stroke:#388E3C
+    style nest0_2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_3 fill:#F1F8E9,stroke:#388E3C
+    style nest1_0 fill:#F0F4C3,stroke:#AED581
+    style nest1_1 fill:#F0F4C3,stroke:#AED581
+    style nest1_2 fill:#F1F8E9,stroke:#388E3C
+    style nest1_3 fill:#F1F8E9,stroke:#388E3C
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#AED581,stroke-width:2px,fill:none;
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+    linkStyle 5 stroke:#388E3C,stroke-width:2px,fill:none;
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+    linkStyle 16 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
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+    linkStyle 25 stroke:#D2D2D2,stroke-width:2px,fill:none;
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+    linkStyle 33 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#AED581,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#388E3C,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_900.txt b/train/mermaid/hard/mermaid_900.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d7343100b4fe408b7800c7e44c05e4d452f6f03f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_900.txt
@@ -0,0 +1,37 @@
+<Audit Planning, connectedTo, Quality Standards Development>
+<Calibration of Instruments, connectedTo, Software Quality Assurance>
+<Hardware Quality Testing, connectedTo, Audit Planning>
+<Hardware Quality Testing, connectedTo, Quality Planning>
+<Hardware Quality Testing, corrective_actions_implements, Regulatory Compliance for Quality>
+<ISO Certification, partOf, Customer Feedback Analysis>
+<ISO Certification, preventive_actions_applies, Continuous Improvement>
+<Lean Principles in Quality, connectedTo, Calibration of Instruments>
+<Lean Principles in Quality, connectedTo, Process Monitoring>
+<Non_Conformance Management, connectedTo, Product Testing>
+<Non_Conformance Management, partOf, Corrective and Preventive Actions>
+<Non_Destructive Testing, connectedTo, Regulatory Compliance for Quality>
+<Process Monitoring, connectedTo, ISO Certification>
+<Process Monitoring, partOf, Customer Feedback Analysis>
+<Product Testing, connectedTo, Non_Destructive Testing>
+<Product Testing, connectedTo, Quality Planning>
+<Product Testing, connectedTo, Six Sigma Methodologies>
+<Product Testing, reports_generates, Regulatory Compliance for Quality>
+<Quality Management Systems, connectedTo, Sampling Plans>
+<Quality Management Systems, partOf, Corrective and Preventive Actions>
+<Quality Planning, connectedTo, Lean Principles in Quality>
+<Quality Planning, connectedTo, Regulatory Compliance for Quality>
+<Quality Standards Development, connectedTo, Product Testing>
+<Regulatory Compliance for Quality, connectedTo, Continuous Improvement>
+<Root Cause Analysis, connectedTo, Continuous Improvement>
+<Root Cause Analysis, connectedTo, Non_Destructive Testing>
+<Root Cause Analysis, connectedTo, Regulatory Compliance for Quality>
+<Sampling Plans, connectedTo, Non_Conformance Management>
+<Sampling Plans, partOf, Corrective and Preventive Actions>
+<Six Sigma Methodologies, connectedTo, Quality Management Systems>
+<Six Sigma Methodologies, partOf, Corrective and Preventive Actions>
+<Software Quality Assurance, connectedTo, Supplier Audits>
+<Statistical Process Control, connectedTo, Total Quality Management>
+<Supplier Audits, certifies, Regulatory Compliance for Quality>
+<Supplier Audits, connectedTo, Root Cause Analysis>
+<Total Quality Management, connectedTo, Hardware Quality Testing>
+<Total Quality Management, connectedTo, Quality Planning>
diff --git a/train/mermaid/hard/mermaid_901.mmd b/train/mermaid/hard/mermaid_901.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..60dc1e2f558e611cd8b93897fd30104ed2e21bb3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_901.mmd
@@ -0,0 +1,115 @@
+graph RL
+    N0([start])
+    N1[/Product Testing/]
+    N2[Quality Assurance]
+    N3[[Quality Data Analysis]]
+    N4[Non_Conformance Management]
+    N5(Root Cause Analysis)
+    N6(Corrective and Preventive Actions)
+    N7([Risk_Based Quality Control])
+    N8(Continuous Improvement)
+    N9[[X_ray Inspection]]
+    N10[/Regulatory Compliance for Quality/]
+    N11[(Metrology)]
+    N12{Food Safety Quality Control}
+    N13[Total Quality Management]
+    N14[Hardware Quality Testing]
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph ISO Certification
+        nest0_0[Supplier Quality Management]
+        nest0_1[Supplier Audits]
+        nest0_2([Statistical Process Control])
+    end
+    subgraph Testing Methods
+        nest1_0[Software Quality Assurance]
+        nest1_1[[Automated Optical Inspection]]
+        nest1_2(Inspection Procedures)
+        nest1_3[Sampling Plans]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    N10 --> nest0_0
+    nest0_2 -.-> N15
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    nest1_2 -.-> nest1_3
+    N1 -.-> nest1_0
+    nest1_3 -.-> N13
+    N6 -.-> S0
+    S0 --> N13
+    S0 -.-> N12
+    N8 --> S1
+    S1 --> N13
+    S1 -.-> N11
+    S1 --> N14
+    S1 --> N12
+    N9 --> M0
+    N10 -.-> M0
+    N7 -.-> M0
+    M0 -.-> N14
+    N4 -.-> M1
+    N10 -.-> M1
+    M1 -.-> N14
+    style S0 fill:#FAEBF3,stroke:#F7BEE0
+    style S1 fill:#FCE4EC,stroke:#E91E63
+    style M0 fill:#FAEBF3,stroke:#F7BEE0
+    style M1 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AABEC6,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#F7BEE0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_901.txt b/train/mermaid/hard/mermaid_901.txt
new file mode 100644
index 0000000000000000000000000000000000000000..868f0885f799c244fb5a44e9681879bf2e0f1751
--- /dev/null
+++ b/train/mermaid/hard/mermaid_901.txt
@@ -0,0 +1,41 @@
+<Automated Optical Inspection, connectedTo, Inspection Procedures>
+<Automated Optical Inspection, partOf, Testing Methods>
+<Continuous Improvement, connectedTo, Food Safety Quality Control>
+<Continuous Improvement, connectedTo, Hardware Quality Testing>
+<Continuous Improvement, connectedTo, Metrology>
+<Continuous Improvement, connectedTo, Total Quality Management>
+<Continuous Improvement, connectedTo, X_ray Inspection>
+<Corrective and Preventive Actions, connectedTo, Food Safety Quality Control>
+<Corrective and Preventive Actions, connectedTo, Risk_Based Quality Control>
+<Corrective and Preventive Actions, connectedTo, Total Quality Management>
+<Food Safety Quality Control, connectedTo, Total Quality Management>
+<Hardware Quality Testing, connectedTo, end>
+<Inspection Procedures, connectedTo, Sampling Plans>
+<Inspection Procedures, partOf, Testing Methods>
+<Metrology, connectedTo, Food Safety Quality Control>
+<Non_Conformance Management, connectedTo, Hardware Quality Testing>
+<Non_Conformance Management, connectedTo, Root Cause Analysis>
+<Product Testing, connectedTo, Quality Assurance>
+<Product Testing, connectedTo, Software Quality Assurance>
+<Quality Assurance, connectedTo, Quality Data Analysis>
+<Quality Data Analysis, connectedTo, Non_Conformance Management>
+<Regulatory Compliance for Quality, connectedTo, Hardware Quality Testing>
+<Regulatory Compliance for Quality, connectedTo, Metrology>
+<Regulatory Compliance for Quality, connectedTo, Supplier Quality Management>
+<Risk_Based Quality Control, connectedTo, Continuous Improvement>
+<Risk_Based Quality Control, connectedTo, Hardware Quality Testing>
+<Root Cause Analysis, connectedTo, Corrective and Preventive Actions>
+<Sampling Plans, connectedTo, Total Quality Management>
+<Sampling Plans, partOf, Testing Methods>
+<Software Quality Assurance, connectedTo, Automated Optical Inspection>
+<Software Quality Assurance, partOf, Testing Methods>
+<Statistical Process Control, connectedTo, end>
+<Statistical Process Control, partOf, ISO Certification>
+<Supplier Audits, connectedTo, Statistical Process Control>
+<Supplier Audits, partOf, ISO Certification>
+<Supplier Quality Management, connectedTo, Supplier Audits>
+<Supplier Quality Management, partOf, ISO Certification>
+<Total Quality Management, connectedTo, Hardware Quality Testing>
+<X_ray Inspection, connectedTo, Hardware Quality Testing>
+<X_ray Inspection, connectedTo, Regulatory Compliance for Quality>
+<start, connectedTo, Product Testing>
diff --git a/train/mermaid/hard/mermaid_903.mmd b/train/mermaid/hard/mermaid_903.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6b56d9dfd62039890881ecd7be83de57131ab7ef
--- /dev/null
+++ b/train/mermaid/hard/mermaid_903.mmd
@@ -0,0 +1,112 @@
+graph TD
+    N0([start])
+    N1([Corrective and Preventive Actions])
+    N2[Supplier Audits]
+    N3([Calibration of Instruments])
+    N4[Defect Detection]
+    N5([Quality Standards Development])
+    N6[Quality Data Analysis]
+    N7[(Quality Assurance)]
+    N8{Product Testing}
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Statistical Process Control
+        nest0_0[[Testing Methods]]
+        nest0_1{Risk_Based Quality Control}
+        nest0_2{X_ray Inspection}
+        nest0_3([Inspection Procedures])
+    end
+    subgraph Metrology
+        nest1_0(Audit Planning)
+        nest1_1[(Process Monitoring)]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    nest0_0 --> nest0_1
+    nest0_1 --> |processes_defines| nest0_2
+    nest0_2 --> nest0_3
+    N6 -.-> nest0_0
+    nest0_3 -.-> N3
+    nest1_0 --> nest1_1
+    N3 --> nest1_0
+    nest1_1 --> N4
+    N1 --> S0
+    S0 --> N6
+    S0 --> N3
+    S0 -.-> N8
+    N0 -.-> S1
+    S1 -.-> N8
+    S1 --> |preventive_actions_applies| N7
+    N3 --> S2
+    S2 --> N7
+    S2 --> N8
+    S2 -.-> N6
+    N4 -.-> M0
+    N0 --> M0
+    M0 -.-> N7
+    N0 -.-> M1
+    N1 --> M1
+    M1 --> N3
+    style N0 fill:#CADEDE,stroke:#94C0C0
+    style N1 fill:#FFF3E0,stroke:#FFA726
+    style N2 fill:#FFF3E0,stroke:#FFA726
+    style N3 fill:#FFF3E0,stroke:#FFA726
+    style N4 fill:#D0E0F8,stroke:#4285F4
+    style N5 fill:#D0E0F8,stroke:#4285F4
+    style N6 fill:#D0E0F8,stroke:#4285F4
+    style N7 fill:#FFF3E0,stroke:#FFA726
+    style N8 fill:#CADEDE,stroke:#94C0C0
+    style S0 fill:#CADEDE,stroke:#94C0C0
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style S2 fill:#D0E0F8,stroke:#4285F4
+    style M0 fill:#FFF3E0,stroke:#FFA726
+    style M1 fill:#D0E0F8,stroke:#4285F4
+    style nest0_0 fill:#D0E0F8,stroke:#4285F4
+    style nest0_1 fill:#FFF3E0,stroke:#FFA726
+    style nest0_2 fill:#CADEDE,stroke:#94C0C0
+    style nest0_3 fill:#CADEDE,stroke:#94C0C0
+    style nest1_0 fill:#D0E0F8,stroke:#4285F4
+    style nest1_1 fill:#CADEDE,stroke:#94C0C0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFA726,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4285F4,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#4285F4,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_903.txt b/train/mermaid/hard/mermaid_903.txt
new file mode 100644
index 0000000000000000000000000000000000000000..691bbeafce928e6d76f9ece14777a16c364d4356
--- /dev/null
+++ b/train/mermaid/hard/mermaid_903.txt
@@ -0,0 +1,33 @@
+<Audit Planning, connectedTo, Process Monitoring>
+<Audit Planning, partOf, Metrology>
+<Calibration of Instruments, connectedTo, Audit Planning>
+<Calibration of Instruments, connectedTo, Defect Detection>
+<Calibration of Instruments, connectedTo, Product Testing>
+<Calibration of Instruments, connectedTo, Quality Assurance>
+<Calibration of Instruments, connectedTo, Quality Data Analysis>
+<Corrective and Preventive Actions, connectedTo, Calibration of Instruments>
+<Corrective and Preventive Actions, connectedTo, Product Testing>
+<Corrective and Preventive Actions, connectedTo, Quality Data Analysis>
+<Corrective and Preventive Actions, connectedTo, Supplier Audits>
+<Defect Detection, connectedTo, Quality Assurance>
+<Defect Detection, connectedTo, Quality Standards Development>
+<Inspection Procedures, connectedTo, Calibration of Instruments>
+<Inspection Procedures, partOf, Statistical Process Control>
+<Process Monitoring, connectedTo, Defect Detection>
+<Process Monitoring, partOf, Metrology>
+<Quality Assurance, connectedTo, Product Testing>
+<Quality Data Analysis, connectedTo, Quality Assurance>
+<Quality Data Analysis, connectedTo, Testing Methods>
+<Quality Standards Development, connectedTo, Quality Data Analysis>
+<Risk_Based Quality Control, partOf, Statistical Process Control>
+<Risk_Based Quality Control, processes_defines, X_ray Inspection>
+<Supplier Audits, connectedTo, Calibration of Instruments>
+<Testing Methods, connectedTo, Risk_Based Quality Control>
+<Testing Methods, partOf, Statistical Process Control>
+<X_ray Inspection, connectedTo, Inspection Procedures>
+<X_ray Inspection, partOf, Statistical Process Control>
+<start, connectedTo, Calibration of Instruments>
+<start, connectedTo, Corrective and Preventive Actions>
+<start, connectedTo, Product Testing>
+<start, connectedTo, Quality Assurance>
+<start, preventive_actions_applies, Quality Assurance>
diff --git a/train/mermaid/hard/mermaid_905.mmd b/train/mermaid/hard/mermaid_905.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..fc162ff5b03bd2721ae80ffe5e7af0ee280ad61d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_905.mmd
@@ -0,0 +1,79 @@
+graph BT
+    N0([start])
+    N1(Vendor Management)
+    N2[Sales and Distribution]
+    N3([User Access Management])
+    N4([Project Management])
+    N5[Testing ERP Modules]
+    N6[User Training]
+    N7(Inventory Management)
+    S0(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Customization
+        nest0_0[(Financial Management)]
+        nest0_1(Workflow Automation in ERP)
+        nest0_2{On_Premise ERP Solutions}
+    end
+    subgraph Business Intelligence Integration
+        nest1_0[Asset Management]
+        nest1_1[[Troubleshooting and Support]]
+        nest1_2[ERP System Selection]
+        nest1_3(Compliance Reporting)
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    N6 -.-> nest0_0
+    nest0_2 --> |yes| N2
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 --> nest1_3
+    N3 -.-> nest1_0
+    nest1_3 --> N5
+    N3 -.-> S0
+    S0 -.-> N5
+    S0 -.-> N7
+    N1 -.-> S2
+    S2 -.-> N5
+    S2 --> N4
+    S2 --> |yes| N6
+    N2 --> M1
+    N3 --> M1
+    M1 -.-> N6
+    style S0 fill:#EBEBEB,stroke:#E0E0E0
+    style S2 fill:#FFF6D9,stroke:#FFCC7A
+    style M1 fill:#C8EDFF,stroke:#82DAFF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#FFCC7A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_905.txt b/train/mermaid/hard/mermaid_905.txt
new file mode 100644
index 0000000000000000000000000000000000000000..737b5ceb1a05fe152eeeaf60e727b2b3315c3f9a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_905.txt
@@ -0,0 +1,30 @@
+<Asset Management, connectedTo, Troubleshooting and Support>
+<Asset Management, partOf, Business Intelligence Integration>
+<Compliance Reporting, connectedTo, Testing ERP Modules>
+<Compliance Reporting, partOf, Business Intelligence Integration>
+<ERP System Selection, connectedTo, Compliance Reporting>
+<ERP System Selection, partOf, Business Intelligence Integration>
+<Financial Management, connectedTo, Workflow Automation in ERP>
+<Financial Management, partOf, Customization>
+<On_Premise ERP Solutions, partOf, Customization>
+<On_Premise ERP Solutions, yes, Sales and Distribution>
+<Project Management, connectedTo, Testing ERP Modules>
+<Sales and Distribution, connectedTo, User Access Management>
+<Sales and Distribution, connectedTo, User Training>
+<Testing ERP Modules, connectedTo, User Training>
+<Troubleshooting and Support, connectedTo, ERP System Selection>
+<Troubleshooting and Support, partOf, Business Intelligence Integration>
+<User Access Management, connectedTo, Asset Management>
+<User Access Management, connectedTo, Inventory Management>
+<User Access Management, connectedTo, Project Management>
+<User Access Management, connectedTo, Testing ERP Modules>
+<User Access Management, connectedTo, User Training>
+<User Training, connectedTo, Financial Management>
+<User Training, connectedTo, Inventory Management>
+<Vendor Management, connectedTo, Project Management>
+<Vendor Management, connectedTo, Sales and Distribution>
+<Vendor Management, connectedTo, Testing ERP Modules>
+<Vendor Management, yes, User Training>
+<Workflow Automation in ERP, connectedTo, On_Premise ERP Solutions>
+<Workflow Automation in ERP, partOf, Customization>
+<start, connectedTo, Vendor Management>
diff --git a/train/mermaid/hard/mermaid_906.mmd b/train/mermaid/hard/mermaid_906.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..4f647041dada3b431d18f34eb5823f237d15fb6d
--- /dev/null
+++ b/train/mermaid/hard/mermaid_906.mmd
@@ -0,0 +1,95 @@
+graph LR
+    N0([start])
+    N1[/Asset Management/]
+    N2[[Security Management]]
+    N3(Cloud ERP Deployment)
+    N4[Troubleshooting and Support]
+    N5[(Compliance Reporting)]
+    N6{Human Capital Management}
+    N7(System Upgrade)
+    N8[[Manufacturing Operations]]
+    N9[[Sales and Distribution]]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph System Configuration
+        nest0_0[/Business Intelligence Integration/]
+        nest0_1[ERP Consulting]
+    end
+    subgraph ERP System Selection
+        nest1_0([Procurement Management])
+        nest1_1{Implementation Roadmap Development}
+        nest1_2(User Acceptance Testing)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> |no| N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> |yes| N9
+    nest0_0 -.-> nest0_1
+    N1 --> nest0_0
+    nest0_1 --> N4
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N7 -.-> |yes| nest1_0
+    nest1_2 --> N3
+    N2 -.-> S0
+    S0 --> N4
+    S0 -.-> N5
+    N3 -.-> S1
+    S1 --> N6
+    S1 --> N8
+    S1 -.-> N9
+    N4 -.-> S2
+    S2 --> N9
+    S2 -.-> N6
+    N1 --> M0
+    N4 -.-> M0
+    M0 --> N6
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N3
+    style S0 fill:#C9EFEC,stroke:#6FE1D5
+    style S1 fill:#C9EFEC,stroke:#6FE1D5
+    style S2 fill:#C9EFEC,stroke:#6FE1D5
+    style M0 fill:#C9EFEC,stroke:#6FE1D5
+    style M1 fill:#C9EFEC,stroke:#6FE1D5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#90A4AE,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#B0C5CD,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#6FE1D5,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#6FE1D5,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_908.mmd b/train/mermaid/hard/mermaid_908.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..f60530fb80ed1a9dcf5120725af2ce3883222cdb
--- /dev/null
+++ b/train/mermaid/hard/mermaid_908.mmd
@@ -0,0 +1,134 @@
+graph BT
+    N0([Customization])
+    N1[Master Data Management]
+    N2(Supply Chain Management)
+    N3[/Implementation Roadmap Development/]
+    N4{Data Governance}
+    N5(Troubleshooting and Support)
+    N6(System Configuration)
+    N7[[Post_Go_Live Support]]
+    N8{On_Premise ERP Solutions}
+    N9(ERP Consulting)
+    N10[(User Acceptance Testing)]
+    N11[Mobile ERP Access]
+    N12(Reporting and Analytics)
+    N13[(System Upgrade)]
+    N14[Business Process Re_engineering]
+    N15[(User Access Management)]
+    N16([Business Intelligence Integration])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Project Management
+        nest0_0{Security Management}
+        nest0_1[Financial Management]
+        nest0_2(Integration with Other Systems)
+    end
+    subgraph Sales and Distribution
+        nest1_0([Compliance Reporting])
+        nest1_1[Module Implementation]
+        nest1_2[Performance Optimization]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> |plans| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> N16
+    nest0_0 -.-> |configures| nest0_1
+    nest0_1 -.-> nest0_2
+    N2 --> nest0_0
+    nest0_2 -.-> |inventories_manages| N3
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N10 -.-> nest1_0
+    nest1_2 --> N6
+    N13 -.-> S0
+    S0 -.-> N15
+    S0 --> N16
+    N11 -.-> S1
+    S1 --> N15
+    S1 --> N13
+    S1 -.-> |trains| N14
+    N2 -.-> M1
+    N5 -.-> |on_premise_hosts| M1
+    M1 -.-> N7
+    N1 -.-> |manages| M2
+    N0 -.-> M2
+    M2 -.-> N4
+    style N0 fill:#D7CCC8,stroke:#795548
+    style N1 fill:#D1C4E9,stroke:#673AB7
+    style N2 fill:#D7CCC8,stroke:#795548
+    style N3 fill:#D7CCC8,stroke:#795548
+    style N4 fill:#C8EDFF,stroke:#82DAFF
+    style N5 fill:#C8EDFF,stroke:#82DAFF
+    style N6 fill:#D1C4E9,stroke:#673AB7
+    style N7 fill:#D1C4E9,stroke:#673AB7
+    style N8 fill:#D7CCC8,stroke:#795548
+    style N9 fill:#D1C4E9,stroke:#673AB7
+    style N10 fill:#D7CCC8,stroke:#795548
+    style N11 fill:#D7CCC8,stroke:#795548
+    style N12 fill:#D7CCC8,stroke:#795548
+    style N13 fill:#D7CCC8,stroke:#795548
+    style N14 fill:#D7CCC8,stroke:#795548
+    style N15 fill:#C8EDFF,stroke:#82DAFF
+    style N16 fill:#D1C4E9,stroke:#673AB7
+    style S0 fill:#C8EDFF,stroke:#82DAFF
+    style S1 fill:#C8EDFF,stroke:#82DAFF
+    style M1 fill:#D7CCC8,stroke:#795548
+    style M2 fill:#C8EDFF,stroke:#82DAFF
+    style nest0_0 fill:#D1C4E9,stroke:#673AB7
+    style nest0_1 fill:#D1C4E9,stroke:#673AB7
+    style nest0_2 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_0 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_1 fill:#C8EDFF,stroke:#82DAFF
+    style nest1_2 fill:#D1C4E9,stroke:#673AB7
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#82DAFF,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#795548,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#673AB7,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#673AB7,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_909.mmd b/train/mermaid/hard/mermaid_909.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2d2a2507d7258471558e8649e9c380a6a98532a7
--- /dev/null
+++ b/train/mermaid/hard/mermaid_909.mmd
@@ -0,0 +1,124 @@
+graph LR
+    N0([Procurement Management])
+    N1(System Upgrade)
+    N2[Workflow Automation in ERP]
+    N3[Vendor Management]
+    N4(User Acceptance Testing)
+    N5[Customization]
+    N6[[Customer Relationship Management]]
+    N7(Module Implementation)
+    N8[[Financial Management]]
+    N9{Implementation Roadmap Development}
+    N10[/Business Intelligence Integration/]
+    N11[/Asset Management/]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Cloud ERP Deployment
+        nest0_0(Supply Chain Management)
+        nest0_1[(User Access Management)]
+        nest0_2[[Security Management]]
+        nest0_3[(Business Process Re_engineering)]
+    end
+    subgraph Data Migration
+        nest1_0(AI or ML in ERP)
+        nest1_1(Project Management)
+        nest1_2[/ERP Consulting/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    nest0_0 --> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N5 --> nest0_0
+    nest0_3 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N9 --> nest1_0
+    nest1_2 --> N10
+    N3 --> S0
+    S0 -.-> N7
+    S0 -.-> N10
+    S0 -.-> N9
+    S0 --> N8
+    N0 --> S1
+    S1 -.-> N6
+    S1 --> N4
+    S1 -.-> N5
+    S1 --> N8
+    N1 --> M0
+    N2 --> M0
+    M0 --> N4
+    N1 -.-> |automates| M1
+    N7 -.-> M1
+    M1 --> N10
+    style N0 fill:#FFF6D9,stroke:#FFCC7A
+    style N1 fill:#FFEBEB,stroke:#FFC2C2
+    style N2 fill:#FFF6D9,stroke:#FFCC7A
+    style N3 fill:#FFEBEB,stroke:#FFC2C2
+    style N4 fill:#FFF6D9,stroke:#FFCC7A
+    style N5 fill:#FFF6D9,stroke:#FFCC7A
+    style N6 fill:#FFEBEB,stroke:#FFC2C2
+    style N7 fill:#FFEBEB,stroke:#FFC2C2
+    style N8 fill:#FFF6D9,stroke:#FFCC7A
+    style N9 fill:#E1BEE7,stroke:#9C27B0
+    style N10 fill:#FFF6D9,stroke:#FFCC7A
+    style N11 fill:#FFF6D9,stroke:#FFCC7A
+    style S0 fill:#E1BEE7,stroke:#9C27B0
+    style S1 fill:#FFF6D9,stroke:#FFCC7A
+    style M0 fill:#FFEBEB,stroke:#FFC2C2
+    style M1 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_1 fill:#FFF6D9,stroke:#FFCC7A
+    style nest0_2 fill:#E1BEE7,stroke:#9C27B0
+    style nest0_3 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_1 fill:#E1BEE7,stroke:#9C27B0
+    style nest1_2 fill:#E1BEE7,stroke:#9C27B0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FFCC7A,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#9C27B0,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FFCC7A,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_910.mmd b/train/mermaid/hard/mermaid_910.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..3778479a1ffae0e100d3c52a68a29d52d15b6e2b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_910.mmd
@@ -0,0 +1,108 @@
+graph TD
+    N0([Vendor Management])
+    N1[Compliance Reporting]
+    N2[Cloud ERP Deployment]
+    N3[Module Implementation]
+    N4[(Reporting and Analytics)]
+    N5[/Hybrid ERP Models/]
+    N6{Business Intelligence Integration}
+    N7[Mobile ERP Access]
+    N8[/Data Migration/]
+    N9(Customer Relationship Management)
+    N10[/Inventory Management/]
+    N11[Project Management]
+    N12[User Acceptance Testing]
+    N13(Performance Optimization)
+    N14([AI or ML in ERP])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Master Data Management
+        nest0_0(ERP System Selection)
+        nest0_1[[System Configuration]]
+    end
+    subgraph Workflow Automation in ERP
+        nest1_0[/Business Process Re_engineering/]
+        nest1_1[Human Capital Management]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> |cloud_deploys| N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> |supports| N10
+    N10 --> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> |tracks| N14
+    nest0_0 --> nest0_1
+    N12 -.-> nest0_0
+    nest0_1 --> N7
+    nest1_0 --> nest1_1
+    N9 -.-> nest1_0
+    nest1_1 -.-> N8
+    N2 -.-> S0
+    S0 --> N13
+    S0 --> N12
+    N9 -.-> S1
+    S1 -.-> N12
+    S1 -.-> N14
+    N0 --> M0
+    N2 --> |upgrades| M0
+    M0 -.-> N5
+    style N0 fill:#FFFDE0,stroke:#FFF8A6
+    style N1 fill:#C8E6C9,stroke:#4CAF50
+    style N2 fill:#FFFDE0,stroke:#FFF8A6
+    style N3 fill:#C8E6C9,stroke:#4CAF50
+    style N4 fill:#E0F2F1,stroke:#4DB6AC
+    style N5 fill:#C8E6C9,stroke:#4CAF50
+    style N6 fill:#E0F2F1,stroke:#4DB6AC
+    style N7 fill:#E0F2F1,stroke:#4DB6AC
+    style N8 fill:#E0F2F1,stroke:#4DB6AC
+    style N9 fill:#C8E6C9,stroke:#4CAF50
+    style N10 fill:#E0F2F1,stroke:#4DB6AC
+    style N11 fill:#FFFDE0,stroke:#FFF8A6
+    style N12 fill:#E0F2F1,stroke:#4DB6AC
+    style N13 fill:#FFFDE0,stroke:#FFF8A6
+    style N14 fill:#FFFDE0,stroke:#FFF8A6
+    style S0 fill:#E0F2F1,stroke:#4DB6AC
+    style S1 fill:#E0F2F1,stroke:#4DB6AC
+    style M0 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest0_1 fill:#C8E6C9,stroke:#4CAF50
+    style nest1_0 fill:#FFFDE0,stroke:#FFF8A6
+    style nest1_1 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#4CAF50,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFF8A6,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_912.mmd b/train/mermaid/hard/mermaid_912.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..48586c76e9b949aa576981e3cd0a73171e220976
--- /dev/null
+++ b/train/mermaid/hard/mermaid_912.mmd
@@ -0,0 +1,104 @@
+graph BT
+    N0([Procurement Management])
+    N1[User Acceptance Testing]
+    N2(User Access Management)
+    N3[Business Intelligence Integration]
+    N4{Integration with Other Systems}
+    N5[Inventory Management]
+    N6(Compliance Reporting)
+    N7(Implementation Roadmap Development)
+    N8(Manufacturing Operations)
+    N9([Supply Chain Management])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    subgraph Reporting and Analytics
+        nest0_0[/Customer Relationship Management/]
+        nest0_1([Sales and Distribution])
+        nest0_2{Data Governance}
+    end
+    subgraph ERP Consulting
+        nest1_0[[Workflow Automation in ERP]]
+        nest1_1[Human Capital Management]
+        nest1_2[Master Data Management]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    nest0_1 --> |trains| nest0_2
+    N3 --> nest0_0
+    nest0_2 --> N9
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N2 --> nest1_0
+    nest1_2 --> N8
+    N0 -.-> S0
+    S0 --> N2
+    S0 -.-> N3
+    S0 --> N6
+    S0 -.-> N7
+    N0 -.-> S1
+    S1 --> N6
+    S1 -.-> N4
+    S1 -.-> N2
+    N1 -.-> M1
+    N0 --> M1
+    N3 -.-> M1
+    M1 -.-> N5
+    style N0 fill:#DDCEDD,stroke:#AF56A6
+    style N1 fill:#DDCEDD,stroke:#AF56A6
+    style N2 fill:#FAEBF3,stroke:#F7BEE0
+    style N3 fill:#D3D7EB,stroke:#8C9EFF
+    style N4 fill:#DDCEDD,stroke:#AF56A6
+    style N5 fill:#D3D7EB,stroke:#8C9EFF
+    style N6 fill:#D3D7EB,stroke:#8C9EFF
+    style N7 fill:#D3D7EB,stroke:#8C9EFF
+    style N8 fill:#DDCEDD,stroke:#AF56A6
+    style N9 fill:#D3D7EB,stroke:#8C9EFF
+    style S0 fill:#D3D7EB,stroke:#8C9EFF
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style M1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_0 fill:#DDCEDD,stroke:#AF56A6
+    style nest0_1 fill:#D3D7EB,stroke:#8C9EFF
+    style nest0_2 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest1_2 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#AF56A6,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_912.txt b/train/mermaid/hard/mermaid_912.txt
new file mode 100644
index 0000000000000000000000000000000000000000..9cdd32b9b9d7afc7fda599c5a59214c328151f34
--- /dev/null
+++ b/train/mermaid/hard/mermaid_912.txt
@@ -0,0 +1,31 @@
+<Business Intelligence Integration, connectedTo, Customer Relationship Management>
+<Business Intelligence Integration, connectedTo, Integration with Other Systems>
+<Business Intelligence Integration, connectedTo, Inventory Management>
+<Compliance Reporting, connectedTo, Implementation Roadmap Development>
+<Customer Relationship Management, connectedTo, Sales and Distribution>
+<Customer Relationship Management, partOf, Reporting and Analytics>
+<Data Governance, connectedTo, Supply Chain Management>
+<Data Governance, partOf, Reporting and Analytics>
+<Human Capital Management, connectedTo, Master Data Management>
+<Human Capital Management, partOf, ERP Consulting>
+<Implementation Roadmap Development, connectedTo, Manufacturing Operations>
+<Integration with Other Systems, connectedTo, Inventory Management>
+<Inventory Management, connectedTo, Compliance Reporting>
+<Manufacturing Operations, connectedTo, Supply Chain Management>
+<Master Data Management, connectedTo, Manufacturing Operations>
+<Master Data Management, partOf, ERP Consulting>
+<Procurement Management, connectedTo, Business Intelligence Integration>
+<Procurement Management, connectedTo, Compliance Reporting>
+<Procurement Management, connectedTo, Implementation Roadmap Development>
+<Procurement Management, connectedTo, Integration with Other Systems>
+<Procurement Management, connectedTo, Inventory Management>
+<Procurement Management, connectedTo, User Acceptance Testing>
+<Procurement Management, connectedTo, User Access Management>
+<Sales and Distribution, partOf, Reporting and Analytics>
+<Sales and Distribution, trains, Data Governance>
+<User Acceptance Testing, connectedTo, Inventory Management>
+<User Acceptance Testing, connectedTo, User Access Management>
+<User Access Management, connectedTo, Business Intelligence Integration>
+<User Access Management, connectedTo, Workflow Automation in ERP>
+<Workflow Automation in ERP, connectedTo, Human Capital Management>
+<Workflow Automation in ERP, partOf, ERP Consulting>
diff --git a/train/mermaid/hard/mermaid_913.mmd b/train/mermaid/hard/mermaid_913.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d9a8904dd91e4b33844826de6dc6bf48800e22b0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_913.mmd
@@ -0,0 +1,126 @@
+graph TD
+    N0([Drone Monitoring])
+    N1[Blockchain for Agri_Supply Chain]
+    N2[[Geographic Information Systems for Farms]]
+    N3{Vertical Farming Technology}
+    N4(Digital Soil Mapping)
+    N5(IoT in Agriculture)
+    N6[[Pest and Disease Management Systems]]
+    N7[/Livestock Feeding Automation/]
+    N8([Predictive Analytics for Harvest])
+    N9([Herd Health Monitoring])
+    N10([Decision Support Systems for Farmers])
+    N11[Weather Station Data Integration]
+    N12[(Farm Robotics)]
+    N13([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M1(( ))
+    subgraph Supply Chain Traceability
+        nest0_0[Big Data Analytics for Farms]
+        nest0_1(Digital Agronomy)
+        nest0_2([Crop Insurance Assessment])
+    end
+    subgraph AI for Crop Disease Detection
+        nest1_0[/Data Security in Agriculture/]
+        nest1_1[Resource Optimization]
+        nest1_2[Automated Farm Machinery]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N2 -.-> nest0_0
+    nest0_2 -.-> N2
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N3 -.-> |produces_safely| nest1_0
+    nest1_2 -.-> N10
+    N6 --> S0
+    S0 --> N9
+    S0 -.-> N8
+    N3 --> S1
+    S1 --> N9
+    S1 --> N6
+    S1 --> N12
+    S1 --> N5
+    N4 --> S2
+    S2 --> N9
+    S2 -.-> N13
+    S2 --> N12
+    N8 -.-> |optimizes| M1
+    N2 -.-> M1
+    M1 -.-> N11
+    style N0 fill:#FCE4EC,stroke:#E91E63
+    style N1 fill:#FCE4EC,stroke:#E91E63
+    style N2 fill:#FFE0B2,stroke:#FF9800
+    style N3 fill:#FCE4EC,stroke:#E91E63
+    style N4 fill:#FCE4EC,stroke:#E91E63
+    style N5 fill:#FAEBF3,stroke:#F7BEE0
+    style N6 fill:#FAEBF3,stroke:#F7BEE0
+    style N7 fill:#FFE0B2,stroke:#FF9800
+    style N8 fill:#FAEBF3,stroke:#F7BEE0
+    style N9 fill:#FFE0B2,stroke:#FF9800
+    style N10 fill:#FCE4EC,stroke:#E91E63
+    style N11 fill:#FAEBF3,stroke:#F7BEE0
+    style N12 fill:#FCE4EC,stroke:#E91E63
+    style N13 fill:#FCE4EC,stroke:#E91E63
+    style S0 fill:#FAEBF3,stroke:#F7BEE0
+    style S1 fill:#FAEBF3,stroke:#F7BEE0
+    style S2 fill:#FFE0B2,stroke:#FF9800
+    style M1 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_0 fill:#FAEBF3,stroke:#F7BEE0
+    style nest0_1 fill:#FFE0B2,stroke:#FF9800
+    style nest0_2 fill:#FCE4EC,stroke:#E91E63
+    style nest1_0 fill:#FCE4EC,stroke:#E91E63
+    style nest1_1 fill:#FFE0B2,stroke:#FF9800
+    style nest1_2 fill:#FAEBF3,stroke:#F7BEE0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#F7BEE0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FF9800,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#FF9800,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_914.mmd b/train/mermaid/hard/mermaid_914.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..b985c5173eff9e27f2402060fd36fec9d7fb443f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_914.mmd
@@ -0,0 +1,148 @@
+graph LR
+    N0([IoT in Agriculture])
+    N1[[Drone Monitoring]]
+    N2[/Sensor Deployment/]
+    N3[/Digital Agronomy/]
+    N4[[Blockchain for Agri_Supply Chain]]
+    N5{Vertical Farming Technology}
+    N6(Market Price Forecasting)
+    N7(Smart Livestock Monitoring)
+    N8(AI for Crop Disease Detection)
+    N9{Sustainability Metrics Tracking}
+    N10[[Satellite Imaging]]
+    N11(Decision Support Systems for Farmers)
+    N12[/Herd Health Monitoring/]
+    N13([Aquaculture Monitoring])
+    N14{Forestry Management with Digital Tools}
+    N15[Geographic Information Systems for Farms]
+    N16[Pest and Disease Management Systems]
+    N17([end])
+    S0(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Big Data Analytics for Farms
+        nest0_0(Data Security in Agriculture)
+        nest0_1[/Carbon Farming Initiatives/]
+    end
+    subgraph Precision Farming
+        nest1_0[Farm Management Dashboards]
+        nest1_1(Livestock Feeding Automation)
+        nest1_2[/Supply Chain Traceability/]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> |manages| N12
+    N12 -.-> N13
+    N13 --> N14
+    N14 --> N15
+    N15 -.-> |risk_manages| N16
+    N16 -.-> N17
+    nest0_0 -.-> nest0_1
+    N3 -.-> |satellites_leverages| nest0_0
+    nest0_1 --> N17
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 -.-> |precision_farming_enables| N17
+    N8 --> S0
+    S0 --> N10
+    S0 --> N13
+    S0 --> N15
+    N5 -.-> S2
+    S2 --> N15
+    S2 --> N9
+    S2 -.-> N10
+    N5 --> M0
+    N2 --> M0
+    M0 -.-> N10
+    N0 -.-> M1
+    N2 --> M1
+    N1 -.-> M1
+    M1 -.-> N4
+    N0 --> M2
+    N5 --> M2
+    N2 -.-> M2
+    M2 --> N9
+    style N0 fill:#FCE4EC,stroke:#E91E63
+    style N1 fill:#FFEBEB,stroke:#FFC2C2
+    style N2 fill:#FFEBEB,stroke:#FFC2C2
+    style N3 fill:#FFEBEB,stroke:#FFC2C2
+    style N4 fill:#E6EE9C,stroke:#CDDC39
+    style N5 fill:#FFEBEB,stroke:#FFC2C2
+    style N6 fill:#FFEBEB,stroke:#FFC2C2
+    style N7 fill:#FCE4EC,stroke:#E91E63
+    style N8 fill:#E6EE9C,stroke:#CDDC39
+    style N9 fill:#FCE4EC,stroke:#E91E63
+    style N10 fill:#FCE4EC,stroke:#E91E63
+    style N11 fill:#FCE4EC,stroke:#E91E63
+    style N12 fill:#FCE4EC,stroke:#E91E63
+    style N13 fill:#FCE4EC,stroke:#E91E63
+    style N14 fill:#FFEBEB,stroke:#FFC2C2
+    style N15 fill:#E6EE9C,stroke:#CDDC39
+    style N16 fill:#FFEBEB,stroke:#FFC2C2
+    style N17 fill:#FFEBEB,stroke:#FFC2C2
+    style S0 fill:#FCE4EC,stroke:#E91E63
+    style S2 fill:#FFEBEB,stroke:#FFC2C2
+    style M0 fill:#FFEBEB,stroke:#FFC2C2
+    style M1 fill:#FFEBEB,stroke:#FFC2C2
+    style M2 fill:#FCE4EC,stroke:#E91E63
+    style nest0_0 fill:#FCE4EC,stroke:#E91E63
+    style nest0_1 fill:#E6EE9C,stroke:#CDDC39
+    style nest1_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest1_1 fill:#FCE4EC,stroke:#E91E63
+    style nest1_2 fill:#FFEBEB,stroke:#FFC2C2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#CDDC39,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 40 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 41 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 42 stroke:#E91E63,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_914.txt b/train/mermaid/hard/mermaid_914.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cf023113de40f00bedba6aa3f4b23650c06bc636
--- /dev/null
+++ b/train/mermaid/hard/mermaid_914.txt
@@ -0,0 +1,41 @@
+<AI for Crop Disease Detection, connectedTo, Aquaculture Monitoring>
+<AI for Crop Disease Detection, connectedTo, Geographic Information Systems for Farms>
+<AI for Crop Disease Detection, connectedTo, Satellite Imaging>
+<AI for Crop Disease Detection, connectedTo, Sustainability Metrics Tracking>
+<Aquaculture Monitoring, connectedTo, Forestry Management with Digital Tools>
+<Blockchain for Agri_Supply Chain, connectedTo, Farm Management Dashboards>
+<Blockchain for Agri_Supply Chain, connectedTo, Vertical Farming Technology>
+<Carbon Farming Initiatives, connectedTo, end>
+<Carbon Farming Initiatives, partOf, Big Data Analytics for Farms>
+<Data Security in Agriculture, connectedTo, Carbon Farming Initiatives>
+<Data Security in Agriculture, partOf, Big Data Analytics for Farms>
+<Decision Support Systems for Farmers, manages, Herd Health Monitoring>
+<Digital Agronomy, connectedTo, Blockchain for Agri_Supply Chain>
+<Digital Agronomy, satellites_leverages, Data Security in Agriculture>
+<Drone Monitoring, connectedTo, Blockchain for Agri_Supply Chain>
+<Drone Monitoring, connectedTo, Sensor Deployment>
+<Farm Management Dashboards, connectedTo, Livestock Feeding Automation>
+<Farm Management Dashboards, partOf, Precision Farming>
+<Forestry Management with Digital Tools, connectedTo, Geographic Information Systems for Farms>
+<Geographic Information Systems for Farms, risk_manages, Pest and Disease Management Systems>
+<Herd Health Monitoring, connectedTo, Aquaculture Monitoring>
+<IoT in Agriculture, connectedTo, Blockchain for Agri_Supply Chain>
+<IoT in Agriculture, connectedTo, Drone Monitoring>
+<IoT in Agriculture, connectedTo, Sustainability Metrics Tracking>
+<Livestock Feeding Automation, connectedTo, Supply Chain Traceability>
+<Livestock Feeding Automation, partOf, Precision Farming>
+<Market Price Forecasting, connectedTo, Smart Livestock Monitoring>
+<Pest and Disease Management Systems, connectedTo, end>
+<Satellite Imaging, connectedTo, Decision Support Systems for Farmers>
+<Sensor Deployment, connectedTo, Blockchain for Agri_Supply Chain>
+<Sensor Deployment, connectedTo, Digital Agronomy>
+<Sensor Deployment, connectedTo, Satellite Imaging>
+<Sensor Deployment, connectedTo, Sustainability Metrics Tracking>
+<Smart Livestock Monitoring, connectedTo, AI for Crop Disease Detection>
+<Supply Chain Traceability, partOf, Precision Farming>
+<Supply Chain Traceability, precision_farming_enables, end>
+<Sustainability Metrics Tracking, connectedTo, Satellite Imaging>
+<Vertical Farming Technology, connectedTo, Geographic Information Systems for Farms>
+<Vertical Farming Technology, connectedTo, Market Price Forecasting>
+<Vertical Farming Technology, connectedTo, Satellite Imaging>
+<Vertical Farming Technology, connectedTo, Sustainability Metrics Tracking>
diff --git a/train/mermaid/hard/mermaid_916.txt b/train/mermaid/hard/mermaid_916.txt
new file mode 100644
index 0000000000000000000000000000000000000000..8ee2d5e9eb0b5f4e8b58455d8d518a287b517513
--- /dev/null
+++ b/train/mermaid/hard/mermaid_916.txt
@@ -0,0 +1,37 @@
+<Automated Irrigation, connectedTo, Digital Soil Mapping>
+<Automated Irrigation, partOf, Carbon Farming Initiatives>
+<Big Data Analytics for Farms, connectedTo, Drone Monitoring>
+<Big Data Analytics for Farms, connectedTo, Geographic Information Systems for Farms>
+<Big Data Analytics for Farms, connectedTo, Herd Health Monitoring>
+<Big Data Analytics for Farms, connectedTo, Weather Station Data Integration>
+<Big Data Analytics for Farms, machine_learning_uses, Geographic Information Systems for Farms>
+<Big Data Analytics for Farms, plans, Digital Agronomy>
+<Big Data Analytics for Farms, sensors_deploys, Digital Agronomy>
+<Crop Health Monitoring, connectedTo, Digital Soil Mapping>
+<Crop Health Monitoring, connectedTo, Geographic Information Systems for Farms>
+<Data Security in Agriculture, connectedTo, Sensor Deployment>
+<Digital Agronomy, connectedTo, Geographic Information Systems for Farms>
+<Digital Agronomy, connectedTo, Herd Health Monitoring>
+<Digital Soil Mapping, connectedTo, Farm Management Software>
+<Drone Monitoring, connectedTo, Weather Station Data Integration>
+<Farm Management Dashboards, manages, Automated Irrigation>
+<Farm Management Dashboards, partOf, Carbon Farming Initiatives>
+<Farm Management Software, connectedTo, Big Data Analytics for Farms>
+<Farm Management Software, connectedTo, Farm Management Dashboards>
+<Forestry Management with Digital Tools, connectedTo, Geographic Information Systems for Farms>
+<Forestry Management with Digital Tools, connectedTo, Smart Livestock Monitoring>
+<Forestry Management with Digital Tools, waste_reduces, Geographic Information Systems for Farms>
+<Herd Health Monitoring, connectedTo, Geographic Information Systems for Farms>
+<Market Price Forecasting, connectedTo, Precision Farming>
+<Market Price Forecasting, partOf, Crop Insurance Assessment>
+<Precision Farming, connectedTo, Drone Monitoring>
+<Precision Farming, partOf, Crop Insurance Assessment>
+<Satellite Imaging, connectedTo, Market Price Forecasting>
+<Satellite Imaging, partOf, Crop Insurance Assessment>
+<Sensor Deployment, connectedTo, Crop Health Monitoring>
+<Sensor Deployment, connectedTo, Geographic Information Systems for Farms>
+<Smart Livestock Monitoring, connectedTo, Data Security in Agriculture>
+<Smart Livestock Monitoring, connectedTo, Supply Chain Traceability>
+<Supply Chain Traceability, connectedTo, Satellite Imaging>
+<Supply Chain Traceability, partOf, Crop Insurance Assessment>
+<Weather Station Data Integration, produces_safely, Digital Agronomy>
diff --git a/train/mermaid/hard/mermaid_917.txt b/train/mermaid/hard/mermaid_917.txt
new file mode 100644
index 0000000000000000000000000000000000000000..4ccc4dd9cb48706932fc2902095c6b7c05492244
--- /dev/null
+++ b/train/mermaid/hard/mermaid_917.txt
@@ -0,0 +1,33 @@
+<Automated Farm Machinery, IoT_integrates, Carbon Farming Initiatives>
+<Automated Farm Machinery, produces_safely, Crop Insurance Assessment>
+<Automated Irrigation, connectedTo, Automated Farm Machinery>
+<Automated Irrigation, connectedTo, Carbon Farming Initiatives>
+<Automated Irrigation, connectedTo, Crop Insurance Assessment>
+<Automated Irrigation, connectedTo, Digital Soil Mapping>
+<Automated Irrigation, connectedTo, Resource Optimization>
+<Automated Irrigation, connectedTo, Variable Rate Application>
+<Carbon Farming Initiatives, connectedTo, Crop Insurance Assessment>
+<Connectivity Solutions, connectedTo, Farm Management Dashboards>
+<Connectivity Solutions, partOf, Farm Robotics>
+<Decision Support Systems for Farmers, connectedTo, Predictive Analytics for Harvest>
+<Digital Soil Mapping, connectedTo, Connectivity Solutions>
+<Digital Soil Mapping, partOf, Farm Robotics>
+<Farm Management Dashboards, collects_data, Crop Insurance Assessment>
+<Farm Management Dashboards, partOf, Farm Robotics>
+<Pest and Disease Management Systems, connectedTo, Satellite Imaging>
+<Predictive Analytics for Harvest, connectedTo, Automated Irrigation>
+<Predictive Analytics for Harvest, connectedTo, Crop Insurance Assessment>
+<Resource Optimization, connectedTo, Sensor Deployment>
+<Resource Optimization, partOf, Weather Station Data Integration>
+<Satellite Imaging, connectedTo, Smart Livestock Monitoring>
+<Sensor Deployment, connectedTo, Supply Chain Traceability>
+<Sensor Deployment, partOf, Weather Station Data Integration>
+<Smart Greenhouses, connectedTo, Variable Rate Application>
+<Smart Greenhouses, partOf, Weather Station Data Integration>
+<Smart Livestock Monitoring, connectedTo, Crop Insurance Assessment>
+<Smart Livestock Monitoring, connectedTo, Decision Support Systems for Farmers>
+<Supply Chain Traceability, connectedTo, Smart Greenhouses>
+<Supply Chain Traceability, partOf, Weather Station Data Integration>
+<Variable Rate Application, connectedTo, Automated Farm Machinery>
+<Variable Rate Application, connectedTo, Carbon Farming Initiatives>
+<Variable Rate Application, connectedTo, Crop Insurance Assessment>
diff --git a/train/mermaid/hard/mermaid_92.txt b/train/mermaid/hard/mermaid_92.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7daa400d5fdc45f08227089814a496f3e0f1e5cf
--- /dev/null
+++ b/train/mermaid/hard/mermaid_92.txt
@@ -0,0 +1,36 @@
+<Adventure Sports Booking, connectedTo, end>
+<Adventure Sports Booking, partOf, Loyalty Program Enrollment>
+<Airport Transfer, connectedTo, Destination Selection>
+<Airport Transfer, connectedTo, Historical Site Exploration>
+<Airport Transfer, connectedTo, Museum Visit>
+<Airport Transfer, connectedTo, Visa Application>
+<Baggage Handling, connectedTo, Duty_Free Shopping>
+<Baggage Handling, connectedTo, Passport Renewal Assistance>
+<Cultural Immersion Program, connectedTo, Event Reservation>
+<Cultural Immersion Program, partOf, Loyalty Program Enrollment>
+<Destination Selection, connectedTo, Historical Site Exploration>
+<Duty_Free Shopping, connectedTo, Cultural Immersion Program>
+<Duty_Free Shopping, partOf, Loyalty Program Enrollment>
+<Emergency Assistance, connectedTo, Historical Site Exploration>
+<Emergency Assistance, no, Airport Transfer>
+<Event Reservation, connectedTo, Adventure Sports Booking>
+<Event Reservation, partOf, Loyalty Program Enrollment>
+<Flight Booking, connectedTo, Emergency Assistance>
+<Flight Booking, connectedTo, Historical Site Exploration>
+<Historical Site Exploration, connectedTo, end>
+<Museum Visit, connectedTo, Baggage Handling>
+<Passport Renewal Assistance, connectedTo, Restaurant Reservation>
+<Restaurant Reservation, connectedTo, Destination Selection>
+<Restaurant Reservation, connectedTo, Historical Site Exploration>
+<Restaurant Reservation, connectedTo, Sightseeing Scheduling>
+<Restaurant Reservation, yes, end>
+<Sightseeing Scheduling, connectedTo, Destination Selection>
+<Sightseeing Scheduling, connectedTo, Historical Site Exploration>
+<Sightseeing Scheduling, connectedTo, end>
+<Spa Appointment, connectedTo, Travel Advisory Updates>
+<Spa Appointment, partOf, Lost and Found Service>
+<Travel Advisory Updates, connectedTo, Historical Site Exploration>
+<Travel Advisory Updates, partOf, Lost and Found Service>
+<Visa Application, connectedTo, Museum Visit>
+<Visa Application, connectedTo, Spa Appointment>
+<start, connectedTo, Flight Booking>
diff --git a/train/mermaid/hard/mermaid_924.txt b/train/mermaid/hard/mermaid_924.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a3755db22fd6ee2dacba5f5404fb8538a9d67200
--- /dev/null
+++ b/train/mermaid/hard/mermaid_924.txt
@@ -0,0 +1,35 @@
+<Anti_Cheat Measures, connectedTo, Fan Community Building>
+<Anti_Cheat Measures, partOf, Legal Advisory for Esports>
+<Audience Engagement, connectedTo, Live Streaming Production>
+<Audience Engagement, partOf, Esports Analytics>
+<Data Security for Competitions, connectedTo, Tournament Organization>
+<Data Security for Competitions, partOf, Esports Analytics>
+<Esports Education Programs, connectedTo, Game Strategy Development>
+<Esports Education Programs, connectedTo, Talent Representation>
+<Esports Team Ownership, connectedTo, Esports Education Programs>
+<Event Broadcasting, connectedTo, Network Infrastructure for Tournaments>
+<Fan Community Building, advertises, Media Rights Negotiation>
+<Fan Community Building, partOf, Legal Advisory for Esports>
+<Gambling and Betting Regulation, connectedTo, Esports Team Ownership>
+<Gambling and Betting Regulation, connectedTo, Game Strategy Development>
+<Game Strategy Development, connectedTo, Anti_Cheat Measures>
+<Game Strategy Development, connectedTo, Rules and Regulations Enforcement>
+<Live Streaming Production, connectedTo, Event Broadcasting>
+<Live Streaming Production, connectedTo, Game Strategy Development>
+<Live Streaming Production, connectedTo, Merchandise Sales>
+<Live Streaming Production, connectedTo, Network Infrastructure for Tournaments>
+<Media Rights Negotiation, connectedTo, Game Strategy Development>
+<Media Rights Negotiation, connectedTo, Performance Analysis>
+<Merchandise Sales, connectedTo, Media Rights Negotiation>
+<Performance Analysis, partOf, Esports Analytics>
+<Performance Analysis, salaries_manages, Data Security for Competitions>
+<Rules and Regulations Enforcement, connectedTo, Training Regimen>
+<Talent Representation, connectedTo, Game Strategy Development>
+<Talent Representation, connectedTo, Media Rights Negotiation>
+<Talent Representation, connectedTo, Merchandise Sales>
+<Talent Representation, connectedTo, Team Management>
+<Talent Representation, connectedTo, Training Regimen>
+<Team Management, connectedTo, Live Streaming Production>
+<Tournament Organization, connectedTo, Audience Engagement>
+<Tournament Organization, partOf, Esports Analytics>
+<Training Regimen, connectedTo, Event Broadcasting>
diff --git a/train/mermaid/hard/mermaid_926.txt b/train/mermaid/hard/mermaid_926.txt
new file mode 100644
index 0000000000000000000000000000000000000000..22aadfe7e8c9c83e9deb6d8176870f9a41c4a70f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_926.txt
@@ -0,0 +1,41 @@
+<Audience Engagement, connectedTo, Media Rights Negotiation>
+<Audience Engagement, partOf, Nutrition for Esports Athletes>
+<Brand Partnerships, connectedTo, Sponsorship Acquisition>
+<Brand Partnerships, partOf, Nutrition for Esports Athletes>
+<Broadcast Technology for Esports, connectedTo, League Management>
+<Broadcast Technology for Esports, connectedTo, Performance Analysis>
+<Coaching Staff Management, connectedTo, Talent Representation>
+<Content Creation, connectedTo, Mental Health Support for Players>
+<Content Creation, partOf, Game Strategy Development>
+<Esports Analytics, connectedTo, Performance Analysis>
+<Fan Community Building, connectedTo, Brand Partnerships>
+<Fan Community Building, connectedTo, Broadcast Technology for Esports>
+<Fan Community Building, connectedTo, Coaching Staff Management>
+<Fan Community Building, connectedTo, Gambling and Betting Regulation>
+<Fan Community Building, connectedTo, League Management>
+<Gambling and Betting Regulation, connectedTo, Game Server Management>
+<Game Server Management, connectedTo, Esports Analytics>
+<League Management, connectedTo, Gambling and Betting Regulation>
+<Live Streaming Production, connectedTo, Physical Conditioning for Players>
+<Live Streaming Production, partOf, Game Strategy Development>
+<Media Rights Negotiation, connectedTo, Esports Analytics>
+<Media Rights Negotiation, partOf, Nutrition for Esports Athletes>
+<Mental Health Support for Players, connectedTo, Fan Community Building>
+<Mental Health Support for Players, connectedTo, Ticketing Sales>
+<Merchandise Sales, manages, Content Creation>
+<Merchandise Sales, partOf, Game Strategy Development>
+<Performance Analysis, connectedTo, Social Media Management>
+<Physical Conditioning for Players, connectedTo, Merchandise Sales>
+<Physical Conditioning for Players, partOf, Game Strategy Development>
+<Social Media Management, connectedTo, Coaching Staff Management>
+<Social Media Management, connectedTo, Live Streaming Production>
+<Sponsorship Acquisition, connectedTo, Audience Engagement>
+<Sponsorship Acquisition, partOf, Nutrition for Esports Athletes>
+<Ticketing Sales, connectedTo, Broadcast Technology for Esports>
+<Ticketing Sales, connectedTo, Fan Community Building>
+<Ticketing Sales, connectedTo, Game Server Management>
+<Ticketing Sales, connectedTo, Performance Analysis>
+<Ticketing Sales, connectedTo, Talent Representation>
+<Ticketing Sales, strategies_develops, Social Media Management>
+<Training Regimen, connectedTo, Fan Community Building>
+<Training Regimen, connectedTo, Mental Health Support for Players>
diff --git a/train/mermaid/hard/mermaid_927.txt b/train/mermaid/hard/mermaid_927.txt
new file mode 100644
index 0000000000000000000000000000000000000000..68e3e5436dacf163539bbb51f45ec4d84ed97972
--- /dev/null
+++ b/train/mermaid/hard/mermaid_927.txt
@@ -0,0 +1,43 @@
+<Anti_Cheat Measures, connectedTo, Training Regimen>
+<Audience Engagement, connectedTo, Sponsorship Acquisition>
+<Brand Partnerships, connectedTo, Esports Analytics>
+<Coaching Staff Management, connectedTo, Rules and Regulations Enforcement>
+<Coaching Staff Management, partOf, Esports Education Programs>
+<Content Creation, connectedTo, Prize Pool Management>
+<Content Creation, partOf, Team Management>
+<Data Security for Competitions, connectedTo, Audience Engagement>
+<Data Security for Competitions, connectedTo, end>
+<Data Security for Competitions, platforms_develops, Sponsorship Acquisition>
+<Esports Analytics, connectedTo, Player Wellness Programs>
+<Event Broadcasting, connectedTo, Audience Engagement>
+<Event Broadcasting, connectedTo, Data Security for Competitions>
+<Event Broadcasting, connectedTo, Media Rights Negotiation>
+<Event Broadcasting, connectedTo, Social Media Management>
+<Event Broadcasting, connectedTo, end>
+<Game Server Management, connectedTo, Legal Advisory for Esports>
+<Game Server Management, connectedTo, end>
+<Game Server Management, organizes, Content Creation>
+<Game Strategy Development, connectedTo, Physical Conditioning for Players>
+<Legal Advisory for Esports, connectedTo, Audience Engagement>
+<Legal Advisory for Esports, connectedTo, Game Strategy Development>
+<Legal Advisory for Esports, connectedTo, Physical Conditioning for Players>
+<Legal Advisory for Esports, connectedTo, Sponsorship Acquisition>
+<Legal Advisory for Esports, connectedTo, end>
+<Media Rights Negotiation, connectedTo, Game Server Management>
+<Merchandise Sales, connectedTo, Venue Setup>
+<Nutrition for Esports Athletes, connectedTo, Data Security for Competitions>
+<Nutrition for Esports Athletes, partOf, Team Management>
+<Physical Conditioning for Players, connectedTo, Data Security for Competitions>
+<Physical Conditioning for Players, performance_optimizes, Coaching Staff Management>
+<Player Contracts, connectedTo, Event Broadcasting>
+<Player Wellness Programs, connectedTo, Media Rights Negotiation>
+<Prize Pool Management, partOf, Team Management>
+<Prize Pool Management, tickets_sells, Ticketing Sales>
+<Rules and Regulations Enforcement, connectedTo, Game Server Management>
+<Rules and Regulations Enforcement, partOf, Esports Education Programs>
+<Social Media Management, health_supports, Anti_Cheat Measures>
+<Sponsorship Acquisition, connectedTo, end>
+<Ticketing Sales, connectedTo, Nutrition for Esports Athletes>
+<Ticketing Sales, partOf, Team Management>
+<Training Regimen, connectedTo, Brand Partnerships>
+<Venue Setup, connectedTo, Player Contracts>
diff --git a/train/mermaid/hard/mermaid_929.txt b/train/mermaid/hard/mermaid_929.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6e520be15fdbc44483b1e085886af71d49b571ea
--- /dev/null
+++ b/train/mermaid/hard/mermaid_929.txt
@@ -0,0 +1,35 @@
+<Aging Brain Research, discovers, Neurodegenerative Disease Research>
+<Aging Brain Research, partOf, Neuroprosthetics>
+<Artificial Neural Networks Modeling, connectedTo, Connectomics>
+<Artificial Neural Networks Modeling, connectedTo, Consciousness Studies>
+<Artificial Neural Networks Modeling, connectedTo, Neurotransmitter Research>
+<Brain Mapping, connectedTo, Neural Network Analysis>
+<Brain Mapping, partOf, Deep Brain Stimulation>
+<Brain_Computer Interface, connectedTo, Neurological Disorder Diagnosis>
+<Computational Neuroscience, connectedTo, Brain_Computer Interface>
+<Connectomics, connectedTo, Brain Mapping>
+<Connectomics, connectedTo, Systems Neuroscience>
+<Consciousness Studies, connectedTo, Aging Brain Research>
+<Consciousness Studies, partOf, Neuroprosthetics>
+<Electrophysiology, connectedTo, Artificial Neural Networks Modeling>
+<Electrophysiology, connectedTo, Connectomics>
+<Electrophysiology, connectedTo, Transcranial Magnetic Stimulation>
+<Genetic Basis of Brain Disorders, connectedTo, Sensory Perception Research>
+<Memory Formation Research, connectedTo, Computational Neuroscience>
+<Neural Network Analysis, connectedTo, Pain Perception Research>
+<Neural Network Analysis, partOf, Deep Brain Stimulation>
+<Neurodegenerative Disease Research, connectedTo, Genetic Basis of Brain Disorders>
+<Neurotransmitter Research, connectedTo, Transcranial Magnetic Stimulation>
+<Pain Perception Research, connectedTo, Synaptic Plasticity Study>
+<Pain Perception Research, connectedTo, Transcranial Magnetic Stimulation>
+<Sensory Perception Research, connectedTo, Connectomics>
+<Sensory Perception Research, connectedTo, Pain Perception Research>
+<Spike Train Analysis, connectedTo, Neurodegenerative Disease Research>
+<Synaptic Plasticity Study, connectedTo, Electrophysiology>
+<Systems Neuroscience, connectedTo, Memory Formation Research>
+<Transcranial Magnetic Stimulation, connectedTo, Computational Neuroscience>
+<Transcranial Magnetic Stimulation, connectedTo, Connectomics>
+<Transcranial Magnetic Stimulation, connectedTo, Memory Formation Research>
+<start, connectedTo, Neurotransmitter Research>
+<start, connectedTo, Spike Train Analysis>
+<start, connectedTo, Synaptic Plasticity Study>
diff --git a/train/mermaid/hard/mermaid_932.mmd b/train/mermaid/hard/mermaid_932.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..5c8f341e233e700c9ea96a83a80e78e2357967ec
--- /dev/null
+++ b/train/mermaid/hard/mermaid_932.mmd
@@ -0,0 +1,126 @@
+graph TD
+    N0([start])
+    N1[Neurofeedback Therapy]
+    N2([Sensory Perception Research])
+    N3(Memory Formation Research)
+    N4(Learning Mechanisms Study)
+    N5[Neurological Disorder Diagnosis]
+    N6(Behavioral Neuroscience)
+    N7[Molecular Neuroscience]
+    N8[Neurotransmitter Research]
+    N9[(Systems Neuroscience)]
+    N10[/Drug Development for Brain Disorders/]
+    N11[(Brain Imaging)]
+    N12[(Computational Neuroscience)]
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Optogenetics
+        nest0_0([Addiction Neuroscience])
+        nest0_1[(Gene Therapy for Neurological Disorders)]
+        nest0_2(Sleep Research)
+        nest0_3[(Neuroethics)]
+    end
+    subgraph Electrophysiology
+        nest1_0[Neuroinformatics]
+        nest1_1(Deep Brain Stimulation)
+        nest1_2(Artificial Neural Networks Modeling)
+        nest1_3[Transcranial Magnetic Stimulation]
+    end
+    N0 -.-> N1
+    N1 --> N2
+    N2 --> N3
+    N3 --> N4
+    N4 --> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 --> N9
+    N9 --> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> |processes_data| nest0_3
+    N3 -.-> nest0_0
+    nest0_3 --> N1
+    nest1_0 --> nest1_1
+    nest1_1 -.-> |trains| nest1_2
+    nest1_2 --> nest1_3
+    N1 --> nest1_0
+    nest1_3 -.-> |algorithms_develops| N5
+    N0 -.-> S1
+    S1 --> N5
+    S1 --> N7
+    N2 -.-> S2
+    S2 --> N9
+    S2 --> N8
+    N0 --> M0
+    N1 -.-> M0
+    N2 -.-> M0
+    M0 -.-> N4
+    N4 --> M1
+    N3 --> |innovates| M1
+    M1 -.-> N7
+    style N0 fill:#E9F7E8,stroke:#6EB76D
+    style N1 fill:#F2E6F5,stroke:#CB9BE1
+    style N2 fill:#E0F2F1,stroke:#4DB6AC
+    style N3 fill:#F2E6F5,stroke:#CB9BE1
+    style N4 fill:#E0F2F1,stroke:#4DB6AC
+    style N5 fill:#E0F2F1,stroke:#4DB6AC
+    style N6 fill:#E9F7E8,stroke:#6EB76D
+    style N7 fill:#E9F7E8,stroke:#6EB76D
+    style N8 fill:#F2E6F5,stroke:#CB9BE1
+    style N9 fill:#E9F7E8,stroke:#6EB76D
+    style N10 fill:#F2E6F5,stroke:#CB9BE1
+    style N11 fill:#E9F7E8,stroke:#6EB76D
+    style N12 fill:#E0F2F1,stroke:#4DB6AC
+    style S1 fill:#E9F7E8,stroke:#6EB76D
+    style S2 fill:#F2E6F5,stroke:#CB9BE1
+    style M0 fill:#F2E6F5,stroke:#CB9BE1
+    style M1 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_0 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest0_2 fill:#E0F2F1,stroke:#4DB6AC
+    style nest0_3 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_0 fill:#F2E6F5,stroke:#CB9BE1
+    style nest1_1 fill:#E9F7E8,stroke:#6EB76D
+    style nest1_2 fill:#E0F2F1,stroke:#4DB6AC
+    style nest1_3 fill:#E0F2F1,stroke:#4DB6AC
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#6EB76D,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#CB9BE1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#4DB6AC,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_935.mmd b/train/mermaid/hard/mermaid_935.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..d2bd2d247c7a9d1824d2037bfbadbe0e316e3ccd
--- /dev/null
+++ b/train/mermaid/hard/mermaid_935.mmd
@@ -0,0 +1,112 @@
+graph TD
+    N0([Neuroprosthetics])
+    N1[Stem Cell Research]
+    N2([Neural Network Analysis])
+    N3(Developmental Neuroscience)
+    N4[/Cellular Neuroscience/]
+    N5([Spike Train Analysis])
+    N6[/Motor Control Research/]
+    N7{Pain Perception Research}
+    N8[/Aging Brain Research/]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Synaptic Plasticity Study
+        nest0_0(Neurological Disorder Diagnosis)
+        nest0_1[Computational Neuroscience]
+        nest0_2(Learning Mechanisms Study)
+        nest0_3[/Drug Development for Brain Disorders/]
+    end
+    subgraph Transcranial Magnetic Stimulation
+        nest1_0(Connectomics)
+        nest1_1{Artificial Neural Networks Modeling}
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> |trains| N3
+    N3 --> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 --> N8
+    nest0_0 -.-> |presents| nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N4 --> |innovates| nest0_0
+    nest0_3 --> N7
+    nest1_0 -.-> nest1_1
+    N1 -.-> nest1_0
+    nest1_1 -.-> |funds_raises| N1
+    N0 -.-> S0
+    S0 --> N7
+    S0 -.-> N8
+    S0 -.-> |analyzes| N5
+    N5 --> S1
+    S1 -.-> N8
+    S1 --> N7
+    N4 -.-> S2
+    S2 -.-> N6
+    S2 --> N8
+    S2 -.-> N7
+    N0 --> M0
+    N5 -.-> M0
+    M0 -.-> N8
+    N0 --> M1
+    N1 --> M1
+    M1 --> N3
+    style N0 fill:#DED7F0,stroke:#A188DB
+    style N1 fill:#F5F5F5,stroke:#BDBDBD
+    style N2 fill:#F5F5F5,stroke:#BDBDBD
+    style N3 fill:#F9FBE7,stroke:#C0CA33
+    style N4 fill:#DED7F0,stroke:#A188DB
+    style N5 fill:#F9FBE7,stroke:#C0CA33
+    style N6 fill:#F9FBE7,stroke:#C0CA33
+    style N7 fill:#F5F5F5,stroke:#BDBDBD
+    style N8 fill:#F5F5F5,stroke:#BDBDBD
+    style S0 fill:#F5F5F5,stroke:#BDBDBD
+    style S1 fill:#DED7F0,stroke:#A188DB
+    style S2 fill:#F9FBE7,stroke:#C0CA33
+    style M0 fill:#F9FBE7,stroke:#C0CA33
+    style M1 fill:#DED7F0,stroke:#A188DB
+    style nest0_0 fill:#DED7F0,stroke:#A188DB
+    style nest0_1 fill:#DED7F0,stroke:#A188DB
+    style nest0_2 fill:#F9FBE7,stroke:#C0CA33
+    style nest0_3 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_0 fill:#F5F5F5,stroke:#BDBDBD
+    style nest1_1 fill:#F5F5F5,stroke:#BDBDBD
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C0CA33,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#A188DB,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#BDBDBD,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#BDBDBD,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_937.txt b/train/mermaid/hard/mermaid_937.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3038007fb7ccd7904d451b6e199efb8a93d37b1f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_937.txt
@@ -0,0 +1,35 @@
+<Archival Management, connectedTo, Digital Storytelling>
+<Archival Management, connectedTo, Looting Prevention>
+<Archival Management, digital_reconstructs, Augmented Reality Tours>
+<Augmented Reality Tours, connectedTo, Community Engagement>
+<Augmented Reality Tours, researches, Digital Storytelling>
+<Community Engagement, connectedTo, Digital Storytelling>
+<Community Engagement, connectedTo, Intangible Cultural Heritage Preservation>
+<Conservation Science, connectedTo, Material Analysis>
+<Digital Storytelling, connectedTo, Conservation Science>
+<Digital Storytelling, connectedTo, Material Analysis>
+<Disaster Preparedness for Heritage, connectedTo, Material Analysis>
+<Disaster Preparedness for Heritage, connectedTo, Traditional Knowledge Documentation>
+<Exhibition Curation, connectedTo, Photogrammetry for Documentation>
+<Heritage Impact Assessment, connectedTo, Conservation Science>
+<Heritage Impact Assessment, partOf, World Heritage Site Management>
+<Heritage Site Management, connectedTo, Museum Collection Management>
+<Heritage Site Management, partOf, World Heritage Site Management>
+<Intangible Cultural Heritage Preservation, connectedTo, Conservation Science>
+<Intangible Cultural Heritage Preservation, connectedTo, Digital Storytelling>
+<Intangible Cultural Heritage Preservation, connectedTo, Material Analysis>
+<Intangible Cultural Heritage Preservation, displays, Material Analysis>
+<Legal Protection for Heritage, connectedTo, Archival Management>
+<Looting Prevention, connectedTo, Remote Sensing for Heritage>
+<Looting Prevention, partOf, Historical Research>
+<Museum Collection Management, partOf, World Heritage Site Management>
+<Museum Collection Management, protects, Heritage Impact Assessment>
+<Photogrammetry for Documentation, analyzes_data, Heritage Site Management>
+<Photogrammetry for Documentation, connectedTo, Legal Protection for Heritage>
+<Remote Sensing for Heritage, connectedTo, Digital Storytelling>
+<Remote Sensing for Heritage, partOf, Historical Research>
+<Traditional Knowledge Documentation, accesses, Legal Protection for Heritage>
+<Traditional Knowledge Documentation, connectedTo, Archival Management>
+<Traditional Knowledge Documentation, connectedTo, Augmented Reality Tours>
+<Traditional Knowledge Documentation, connectedTo, Exhibition Curation>
+<Traditional Knowledge Documentation, connectedTo, Legal Protection for Heritage>
diff --git a/train/mermaid/hard/mermaid_94.txt b/train/mermaid/hard/mermaid_94.txt
new file mode 100644
index 0000000000000000000000000000000000000000..88d8a9c30bfa784d45a01da030e69fe1f2772d3e
--- /dev/null
+++ b/train/mermaid/hard/mermaid_94.txt
@@ -0,0 +1,38 @@
+<Baggage Handling, connectedTo, Feedback Collection>
+<Baggage Handling, connectedTo, Lost and Found Service>
+<Baggage Handling, connectedTo, Loyalty Program Enrollment>
+<Baggage Handling, connectedTo, Passport Renewal Assistance>
+<Currency Exchange, connectedTo, Itinerary Planning>
+<Currency Exchange, partOf, Tourist Information Desk>
+<Feedback Collection, connectedTo, Spa Appointment>
+<Flight Booking, connectedTo, Feedback Collection>
+<Flight Booking, connectedTo, Spa Appointment>
+<Flight Booking, no, Language Translation Service>
+<Flight Booking, yes, Passport Renewal Assistance>
+<Group Tour Coordination, connectedTo, Trip Sharing>
+<Group Tour Coordination, partOf, Booking Modification>
+<Itinerary Planning, connectedTo, Rental Car Pickup>
+<Itinerary Planning, partOf, Tourist Information Desk>
+<Language Translation Service, connectedTo, Group Tour Coordination>
+<Language Translation Service, connectedTo, Passport Renewal Assistance>
+<Language Translation Service, no, Sightseeing Scheduling>
+<Lost and Found Service, connectedTo, Loyalty Program Enrollment>
+<Loyalty Program Enrollment, connectedTo, Flight Booking>
+<Passport Renewal Assistance, connectedTo, Feedback Collection>
+<Photo Capture, connectedTo, Flight Booking>
+<Photo Capture, connectedTo, Loyalty Program Enrollment>
+<Photo Capture, connectedTo, Travel Blog Creation>
+<Photo Capture, no, Lost and Found Service>
+<Rental Car Pickup, connectedTo, Tour Guide Assignment>
+<Rental Car Pickup, partOf, Tourist Information Desk>
+<Return Trip, connectedTo, Baggage Handling>
+<Sightseeing Scheduling, connectedTo, Currency Exchange>
+<Sightseeing Scheduling, partOf, Tourist Information Desk>
+<Tour Guide Assignment, connectedTo, Loyalty Program Enrollment>
+<Tour Guide Assignment, yes, Return Trip>
+<Travel Blog Creation, connectedTo, Loyalty Program Enrollment>
+<Travel Blog Creation, yes, Tour Guide Assignment>
+<Trip Sharing, connectedTo, Flight Booking>
+<Trip Sharing, partOf, Booking Modification>
+<start, connectedTo, Loyalty Program Enrollment>
+<start, connectedTo, Photo Capture>
diff --git a/train/mermaid/hard/mermaid_940.mmd b/train/mermaid/hard/mermaid_940.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6b2b5e9d88ed4d69b74cc843111d9877712fa2c2
--- /dev/null
+++ b/train/mermaid/hard/mermaid_940.mmd
@@ -0,0 +1,110 @@
+graph BT
+    N0([start])
+    N1[(Conservation Science)]
+    N2([Archival Management])
+    N3[[Digital Storytelling]]
+    N4[[Digital Documentation]]
+    N5(Dating Techniques)
+    N6[[Sustainable Heritage Management]]
+    N7[Virtual Reality Recreations]
+    N8[/GIS Mapping for Heritage Sites/]
+    N9[Disaster Preparedness for Heritage]
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Underwater Cultural Heritage
+        nest0_0(Augmented Reality Tours)
+        nest0_1{3D Scanning of Artifacts}
+        nest0_2[/Museum Collection Management/]
+    end
+    subgraph Material Analysis
+        nest1_0(Looting Prevention)
+        nest1_1([Public Education Programs])
+        nest1_2(Community Engagement)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 --> |yes| N7
+    N7 -.-> N8
+    N8 -.-> N9
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    N3 --> nest0_0
+    nest0_2 --> N7
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> nest1_2
+    N8 -.-> nest1_0
+    nest1_2 -.-> N2
+    N6 -.-> S0
+    S0 -.-> N9
+    S0 --> N8
+    N0 -.-> S1
+    S1 -.-> N4
+    S1 --> N9
+    S1 --> N8
+    N4 -.-> S2
+    S2 --> N6
+    S2 -.-> N7
+    S2 --> N8
+    N1 --> M0
+    N4 --> M0
+    M0 -.-> N8
+    N3 --> M1
+    N1 -.-> M1
+    N0 --> M1
+    M1 -.-> N5
+    N1 --> M2
+    N0 -.-> M2
+    M2 --> N3
+    style S0 fill:#FCE4EC,stroke:#E91E63
+    style S1 fill:#CADEDE,stroke:#94C0C0
+    style S2 fill:#ECCFF5,stroke:#CD8FF2
+    style M0 fill:#ECCFF5,stroke:#CD8FF2
+    style M1 fill:#CADEDE,stroke:#94C0C0
+    style M2 fill:#FCE4EC,stroke:#E91E63
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#94C0C0,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CD8FF2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_941.txt b/train/mermaid/hard/mermaid_941.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6292be9e8e66963cadc772a0eaa5a0e65acff98f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_941.txt
@@ -0,0 +1,35 @@
+<3D Scanning of Artifacts, connectedTo, Heritage Site Management>
+<3D Scanning of Artifacts, partOf, Sustainable Heritage Management>
+<Augmented Reality Tours, connectedTo, Cultural Tourism Development>
+<Augmented Reality Tours, partOf, Legal Protection for Heritage>
+<Climate Change Impact on Heritage, connectedTo, Public Education Programs>
+<Community Engagement, connectedTo, Digital Documentation>
+<Community Engagement, connectedTo, World Heritage Site Management>
+<Cultural Tourism Development, connectedTo, Risk Assessment for Heritage>
+<Cultural Tourism Development, partOf, Legal Protection for Heritage>
+<Digital Documentation, connectedTo, Oral History Collection>
+<Heritage Impact Assessment, connectedTo, Material Analysis>
+<Heritage Impact Assessment, partOf, Legal Protection for Heritage>
+<Heritage Site Management, connectedTo, Traditional Knowledge Documentation>
+<Heritage Site Management, partOf, Sustainable Heritage Management>
+<Intangible Cultural Heritage Preservation, connectedTo, Climate Change Impact on Heritage>
+<Material Analysis, connectedTo, Intangible Cultural Heritage Preservation>
+<Oral History Collection, connectedTo, Augmented Reality Tours>
+<Oral History Collection, connectedTo, Public Education Programs>
+<Oral History Collection, connectedTo, Remote Sensing for Heritage>
+<Photogrammetry for Documentation, partOf, Sustainable Heritage Management>
+<Photogrammetry for Documentation, yes, Public Education Programs>
+<Remote Sensing for Heritage, connectedTo, Material Analysis>
+<Risk Assessment for Heritage, connectedTo, Heritage Impact Assessment>
+<Risk Assessment for Heritage, partOf, Legal Protection for Heritage>
+<Traditional Knowledge Documentation, connectedTo, Photogrammetry for Documentation>
+<Traditional Knowledge Documentation, partOf, Sustainable Heritage Management>
+<World Heritage Site Management, connectedTo, 3D Scanning of Artifacts>
+<World Heritage Site Management, connectedTo, Digital Documentation>
+<World Heritage Site Management, connectedTo, Intangible Cultural Heritage Preservation>
+<World Heritage Site Management, connectedTo, Material Analysis>
+<World Heritage Site Management, connectedTo, Oral History Collection>
+<World Heritage Site Management, yes, Remote Sensing for Heritage>
+<start, connectedTo, Community Engagement>
+<start, connectedTo, Digital Documentation>
+<start, connectedTo, Public Education Programs>
diff --git a/train/mermaid/hard/mermaid_942.mmd b/train/mermaid/hard/mermaid_942.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2eb7fd21ac1fc6f4b264f81c5fd082f33fb0dfa0
--- /dev/null
+++ b/train/mermaid/hard/mermaid_942.mmd
@@ -0,0 +1,117 @@
+graph TD
+    N0([start])
+    N1{Exhibition Curation}
+    N2[GIS Mapping for Heritage Sites]
+    N3[[Risk Assessment for Heritage]]
+    N4[[Community Engagement]]
+    N5[(Public Education Programs)]
+    N6[(Traditional Knowledge Documentation)]
+    N7[Adaptive Reuse of Heritage Buildings]
+    N8[/Museum Collection Management/]
+    N9[(Cultural Tourism Development)]
+    N10(Heritage Impact Assessment)
+    N11[Artifact Conservation]
+    N12[[Virtual Reality Recreations]]
+    N13{Oral History Collection}
+    N14([end])
+    S0(( ))
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Conservation Science
+        nest0_0[[World Heritage Site Management]]
+        nest0_1[/Crowdsourcing for Heritage Data/]
+        nest0_2{Archival Management}
+        nest0_3{Dating Techniques}
+    end
+    subgraph Climate Change Impact on Heritage
+        nest1_0[(Photogrammetry for Documentation)]
+        nest1_1{Archaeological Excavation}
+    end
+    N0 -.-> N1
+    N1 -.-> |no| N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    nest0_0 --> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 -.-> nest0_3
+    N10 -.-> |no| nest0_0
+    nest0_3 --> |no| N12
+    nest1_0 --> nest1_1
+    N4 --> nest1_0
+    nest1_1 -.-> N13
+    N8 --> S0
+    S0 --> N10
+    S0 -.-> N14
+    S0 -.-> N12
+    N8 -.-> S1
+    S1 -.-> N12
+    S1 --> N14
+    N0 --> S2
+    S2 -.-> N2
+    S2 --> N9
+    N2 -.-> M0
+    N8 -.-> M0
+    N6 -.-> M0
+    M0 --> N11
+    N1 --> M1
+    N11 -.-> M1
+    N9 -.-> M1
+    M1 -.-> N14
+    style S0 fill:#F6F6F6,stroke:#CFCFCF
+    style S1 fill:#FCE4EC,stroke:#F06292
+    style S2 fill:#FCE4EC,stroke:#F06292
+    style M0 fill:#EFE6FF,stroke:#C2B2F0
+    style M1 fill:#F6F6F6,stroke:#CFCFCF
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#C2B2F0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#CFCFCF,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#F06292,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 39 stroke:#CFCFCF,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_943.mmd b/train/mermaid/hard/mermaid_943.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..1095121cbe7a6431559a87b4f513571875ac0358
--- /dev/null
+++ b/train/mermaid/hard/mermaid_943.mmd
@@ -0,0 +1,94 @@
+graph BT
+    N0([start])
+    N1[/Remote Sensing for Heritage/]
+    N2([Community Engagement])
+    N3[Climate Change Impact on Heritage]
+    N4[Looting Prevention]
+    N5[Site Preservation]
+    N6(Traditional Knowledge Documentation)
+    N7(Exhibition Curation)
+    N8[[Legal Protection for Heritage]]
+    N9[[Illicit Trafficking Control]]
+    N10[[Intangible Cultural Heritage Preservation]]
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Archaeological Excavation
+        nest0_0([GIS Mapping for Heritage Sites])
+        nest0_1[Risk Assessment for Heritage]
+        nest0_2[Disaster Preparedness for Heritage]
+    end
+    subgraph Public Education Programs
+        nest1_0[World Heritage Site Management]
+        nest1_1[[Material Analysis]]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    nest0_0 --> nest0_1
+    nest0_1 --> |no| nest0_2
+    N8 -.-> nest0_0
+    nest0_2 --> N8
+    nest1_0 -.-> nest1_1
+    N4 --> nest1_0
+    nest1_1 --> N9
+    N7 -.-> S0
+    S0 -.-> N9
+    S0 --> N10
+    N5 -.-> S1
+    S1 --> N8
+    S1 -.-> N9
+    S1 --> N7
+    S1 --> N10
+    N4 --> M0
+    N5 --> M0
+    N2 --> M0
+    M0 --> N9
+    N3 --> |yes| M1
+    N4 -.-> M1
+    M1 --> N10
+    style S0 fill:#F1F8FF,stroke:#42A5F5
+    style S1 fill:#D0EFEE,stroke:#73C6BC
+    style M0 fill:#C8E6C9,stroke:#388E3C
+    style M1 fill:#F1F8FF,stroke:#42A5F5
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#388E3C,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#73C6BC,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#73C6BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_946.txt b/train/mermaid/hard/mermaid_946.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0aae93fabf50d42c02bd72d39c26e208be127e9a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_946.txt
@@ -0,0 +1,33 @@
+<Bio_manufacturing, connectedTo, Modular Biology Design>
+<Biocontainment Strategies, connectedTo, Microbial Factories>
+<Biocontainment Strategies, partOf, High_Throughput Screening>
+<Biosafety Level Management, connectedTo, Bio_manufacturing>
+<Cell_Free Systems, connectedTo, Genome Engineering>
+<DNA Synthesis, connectedTo, Bio_manufacturing>
+<DNA Synthesis, connectedTo, Biocontainment Strategies>
+<DNA Synthesis, purifies, Risk Assessment>
+<Directed Evolution Automation, connectedTo, Synthetic Organism Design>
+<Genome Engineering, connectedTo, Bio_manufacturing>
+<Genome Engineering, connectedTo, DNA Synthesis>
+<Genome Engineering, connectedTo, Modular Biology Design>
+<Genome Engineering, connectedTo, Risk Assessment>
+<Microbial Factories, connectedTo, Genome Engineering>
+<Microbial Factories, partOf, High_Throughput Screening>
+<Modular Biology Design, connectedTo, CRISPR_Cas System Optimization>
+<Modular Biology Design, connectedTo, Synthetic Gene Networks>
+<Protein Design, connectedTo, Bio_manufacturing>
+<Protein Design, connectedTo, Biosafety Level Management>
+<Regulatory Frameworks, connectedTo, Risk Assessment>
+<Regulatory Frameworks, partOf, Bio_logic Gates>
+<Risk Assessment, complies, Modular Biology Design>
+<Risk Assessment, connectedTo, Bio_manufacturing>
+<Risk Assessment, connectedTo, Biosafety Level Management>
+<Risk Assessment, ethical_considers, Protein Design>
+<Sustainable Chemical Production, clones, Synthetic Organism Design>
+<Sustainable Chemical Production, connectedTo, Cell_Free Systems>
+<Sustainable Chemical Production, connectedTo, Directed Evolution Automation>
+<Sustainable Chemical Production, connectedTo, Modular Biology Design>
+<Synthetic Gene Networks, connectedTo, Regulatory Frameworks>
+<Synthetic Gene Networks, partOf, Bio_logic Gates>
+<Synthetic Organism Design, connectedTo, Cell_Free Systems>
+<start, connectedTo, Sustainable Chemical Production>
diff --git a/train/mermaid/hard/mermaid_947.txt b/train/mermaid/hard/mermaid_947.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6350763d5ad00c8ea9cc75d191921caea7372b7f
--- /dev/null
+++ b/train/mermaid/hard/mermaid_947.txt
@@ -0,0 +1,37 @@
+<Artificial Cells, connectedTo, Bio_logic Gates>
+<Artificial Cells, connectedTo, Gene Therapy Delivery Systems>
+<Artificial Cells, connectedTo, Regulatory Frameworks>
+<Artificial Cells, yes, Genome Engineering>
+<Automated Biology Workflows, connectedTo, Directed Evolution Automation>
+<Automated Biology Workflows, partOf, Modular Biology Design>
+<Bio_logic Gates, connectedTo, Gene Therapy Delivery Systems>
+<Biofuel Production, connectedTo, Artificial Cells>
+<Bioremediation Applications, connectedTo, CRISPR_Cas System Optimization>
+<CRISPR_Cas System Optimization, connectedTo, Cell_Free Systems>
+<CRISPR_Cas System Optimization, no, Public Engagement>
+<Cell_Free Systems, connectedTo, Gene Synthesis Platforms>
+<Cell_Free Systems, yes, Gene Therapy Delivery Systems>
+<Directed Evolution Automation, connectedTo, Gene Therapy Delivery Systems>
+<Directed Evolution Automation, connectedTo, Synthetic Organism Design>
+<Gene Synthesis Platforms, connectedTo, Artificial Cells>
+<Gene Synthesis Platforms, connectedTo, High_Throughput Screening>
+<Gene Synthesis Platforms, connectedTo, Metabolic Pathway Engineering>
+<Gene Synthesis Platforms, yes, Bio_logic Gates>
+<Gene Therapy Delivery Systems, connectedTo, end>
+<Genetic Circuit Design, no, Cell_Free Systems>
+<Genome Engineering, connectedTo, Regulatory Frameworks>
+<High_Throughput Screening, connectedTo, Risk Assessment>
+<High_Throughput Screening, partOf, Bio_computation>
+<Metabolic Pathway Engineering, connectedTo, Biofuel Production>
+<Novel Enzyme Creation, connectedTo, Automated Biology Workflows>
+<Novel Enzyme Creation, partOf, Modular Biology Design>
+<Public Engagement, connectedTo, Novel Enzyme Creation>
+<Public Engagement, yes, Directed Evolution Automation>
+<Regulatory Frameworks, connectedTo, Bio_logic Gates>
+<Risk Assessment, connectedTo, Vaccine Synthesis>
+<Risk Assessment, partOf, Bio_computation>
+<Synthetic Organism Design, connectedTo, Genetic Circuit Design>
+<Vaccine Synthesis, connectedTo, Bio_logic Gates>
+<Vaccine Synthesis, partOf, Bio_computation>
+<start, connectedTo, Bioremediation Applications>
+<start, connectedTo, Cell_Free Systems>
diff --git a/train/mermaid/hard/mermaid_95.mmd b/train/mermaid/hard/mermaid_95.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..6476e68f5cbee1275279708166797fbb6f16fd5b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_95.mmd
@@ -0,0 +1,113 @@
+graph BT
+    N0([start])
+    N1(Historical Site Exploration)
+    N2[[Loyalty Program Enrollment]]
+    N3([Travel Advisory Updates])
+    N4(Itinerary Planning)
+    N5[/Restaurant Reservation/]
+    N6[/Currency Exchange/]
+    N7[(Duty_Free Shopping)]
+    N8[Custom Tour Package Creation]
+    N9[(Group Tour Coordination)]
+    N10(Hotel Check_in)
+    N11([Airport Transfer])
+    N12[/Activity Booking/]
+    N13[Tour Guide Assignment]
+    N14(Cultural Immersion Program)
+    N15([end])
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Feedback Collection
+        nest0_0[Language Translation Service]
+        nest0_1[/Local Transport/]
+        nest0_2[Destination Selection]
+        nest0_3[(Event Reservation)]
+    end
+    subgraph Museum Visit
+        nest1_0[[Spa Appointment]]
+        nest1_1{Booking Modification}
+        nest1_2[Visa Application]
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 -.-> N3
+    N3 -.-> |yes| N4
+    N4 --> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 -.-> N12
+    N12 --> N13
+    N13 -.-> N14
+    N14 --> N15
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    nest0_2 --> nest0_3
+    N13 --> |no| nest0_0
+    nest0_3 -.-> N14
+    nest1_0 --> nest1_1
+    nest1_1 --> nest1_2
+    N8 -.-> nest1_0
+    nest1_2 --> N8
+    N8 -.-> S0
+    S0 --> N14
+    S0 -.-> N15
+    N6 -.-> S1
+    S1 -.-> N11
+    S1 --> N9
+    N1 -.-> M0
+    N0 --> M0
+    N2 -.-> |no| M0
+    M0 -.-> N4
+    N0 --> |yes| M1
+    N12 -.-> M1
+    N9 --> M1
+    M1 --> N14
+    style S0 fill:#E8F5E9,stroke:#66BB6A
+    style S1 fill:#D6D9F0,stroke:#9FA9E1
+    style M0 fill:#D6D9F0,stroke:#9FA9E1
+    style M1 fill:#E8F5E9,stroke:#66BB6A
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#66BB6A,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#FBC02D,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#9FA9E1,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#9FA9E1,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_952.mmd b/train/mermaid/hard/mermaid_952.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..9a03f49693bcb49a53de0e51e3ec26abe40ecd52
--- /dev/null
+++ b/train/mermaid/hard/mermaid_952.mmd
@@ -0,0 +1,114 @@
+graph RL
+    N0([Directed Evolution])
+    N1[(Diagnostic Tool Development)]
+    N2{CRISPR_Cas System Optimization}
+    N3[/Bio_logic Gates/]
+    N4[Biofoundry Operations]
+    N5(Public Engagement)
+    N6(Drug Delivery Systems)
+    N7[Vaccine Synthesis]
+    N8([Biosensor Development])
+    N9[Sustainable Chemical Production]
+    N10(DNA Synthesis)
+    S0(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Computational Design of Biological Systems
+        nest0_0([Automated Biology Workflows])
+        nest0_1{Metabolic Pathway Engineering}
+        nest0_2[[Risk Assessment]]
+    end
+    subgraph Biosafety Level Management
+        nest1_0(Regulatory Frameworks)
+        nest1_1[[Microbial Factories]]
+        nest1_2(Cell_Free Systems)
+    end
+    N0 -.-> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 --> N5
+    N5 --> N6
+    N6 --> |systems_develops| N7
+    N7 -.-> |licenses| N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    nest0_1 -.-> nest0_2
+    N9 --> nest0_0
+    nest0_2 -.-> N8
+    nest1_0 -.-> |data_processes| nest1_1
+    nest1_1 -.-> |engineers| nest1_2
+    N7 --> nest1_0
+    nest1_2 -.-> N2
+    N5 -.-> S0
+    S0 -.-> N10
+    S0 --> N7
+    S0 --> N9
+    N0 -.-> M0
+    N1 -.-> M0
+    N2 -.-> M0
+    M0 --> N4
+    N0 -.-> M1
+    N2 -.-> M1
+    N1 --> M1
+    M1 --> N4
+    N2 --> M2
+    N0 --> |collaborates| M2
+    M2 --> N4
+    style N0 fill:#FFF0CC,stroke:#FFCC80
+    style N1 fill:#FFF0CC,stroke:#FFCC80
+    style N2 fill:#FFF0CC,stroke:#FFCC80
+    style N3 fill:#F3E5F5,stroke:#BA68C8
+    style N4 fill:#F3E5F5,stroke:#BA68C8
+    style N5 fill:#F3E5F5,stroke:#BA68C8
+    style N6 fill:#FFF0CC,stroke:#FFCC80
+    style N7 fill:#B3E5FC,stroke:#03A9F4
+    style N8 fill:#FFF0CC,stroke:#FFCC80
+    style N9 fill:#B3E5FC,stroke:#03A9F4
+    style N10 fill:#FFF0CC,stroke:#FFCC80
+    style S0 fill:#F3E5F5,stroke:#BA68C8
+    style M0 fill:#FFF0CC,stroke:#FFCC80
+    style M1 fill:#F3E5F5,stroke:#BA68C8
+    style M2 fill:#F3E5F5,stroke:#BA68C8
+    style nest0_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_1 fill:#B3E5FC,stroke:#03A9F4
+    style nest0_2 fill:#FFF0CC,stroke:#FFCC80
+    style nest1_0 fill:#B3E5FC,stroke:#03A9F4
+    style nest1_1 fill:#F3E5F5,stroke:#BA68C8
+    style nest1_2 fill:#FFF0CC,stroke:#FFCC80
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#FFCC80,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BA68C8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#03A9F4,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#BA68C8,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_952.txt b/train/mermaid/hard/mermaid_952.txt
new file mode 100644
index 0000000000000000000000000000000000000000..28b6999e4899ab68f2ff59cdf5368614c368c23b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_952.txt
@@ -0,0 +1,31 @@
+<Automated Biology Workflows, connectedTo, Metabolic Pathway Engineering>
+<Automated Biology Workflows, partOf, Computational Design of Biological Systems>
+<Bio_logic Gates, connectedTo, Biofoundry Operations>
+<Biofoundry Operations, connectedTo, Public Engagement>
+<Biosensor Development, connectedTo, Sustainable Chemical Production>
+<CRISPR_Cas System Optimization, connectedTo, Bio_logic Gates>
+<CRISPR_Cas System Optimization, connectedTo, Biofoundry Operations>
+<Cell_Free Systems, connectedTo, CRISPR_Cas System Optimization>
+<Cell_Free Systems, partOf, Biosafety Level Management>
+<Diagnostic Tool Development, connectedTo, Biofoundry Operations>
+<Diagnostic Tool Development, connectedTo, CRISPR_Cas System Optimization>
+<Directed Evolution, collaborates, Biofoundry Operations>
+<Directed Evolution, connectedTo, Biofoundry Operations>
+<Directed Evolution, connectedTo, Diagnostic Tool Development>
+<Drug Delivery Systems, systems_develops, Vaccine Synthesis>
+<Metabolic Pathway Engineering, connectedTo, Risk Assessment>
+<Metabolic Pathway Engineering, partOf, Computational Design of Biological Systems>
+<Microbial Factories, engineers, Cell_Free Systems>
+<Microbial Factories, partOf, Biosafety Level Management>
+<Public Engagement, connectedTo, DNA Synthesis>
+<Public Engagement, connectedTo, Drug Delivery Systems>
+<Public Engagement, connectedTo, Sustainable Chemical Production>
+<Public Engagement, connectedTo, Vaccine Synthesis>
+<Regulatory Frameworks, data_processes, Microbial Factories>
+<Regulatory Frameworks, partOf, Biosafety Level Management>
+<Risk Assessment, connectedTo, Biosensor Development>
+<Risk Assessment, partOf, Computational Design of Biological Systems>
+<Sustainable Chemical Production, connectedTo, Automated Biology Workflows>
+<Sustainable Chemical Production, connectedTo, DNA Synthesis>
+<Vaccine Synthesis, connectedTo, Regulatory Frameworks>
+<Vaccine Synthesis, licenses, Biosensor Development>
diff --git a/train/mermaid/hard/mermaid_955.mmd b/train/mermaid/hard/mermaid_955.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..850835600b9bd9267a2d9687cfdcb47221d29c11
--- /dev/null
+++ b/train/mermaid/hard/mermaid_955.mmd
@@ -0,0 +1,95 @@
+graph RL
+    N0([start])
+    N1(Personalized Learning Paths)
+    N2[[Gamified Learning]]
+    N3(Open Educational Resources)
+    N4[Online Tutoring Platforms]
+    N5[/Augmented Reality in Education/]
+    N6(Curriculum Digitization)
+    N7{Student Information Systems}
+    N8(Educational Data Mining)
+    N9[(Assessment Tools)]
+    N10(Learning Design Principles)
+    N11[/Learning Analytics Dashboards/]
+    N12(Educational Apps Development)
+    S0(( ))
+    S1(( ))
+    M0(( ))
+    subgraph Parent Engagement Tools
+        nest0_0(Professional Development for Educators)
+        nest0_1([Collaborative Learning Platforms])
+    end
+    subgraph Virtual Labs
+        nest1_0[(Massive Open Online Courses)]
+        nest1_1(Digital Textbooks)
+        nest1_2(Formative Assessment Tools)
+        nest1_3(Virtual Classrooms)
+    end
+    N0 -.-> N1
+    N1 --> |no| N2
+    N2 -.-> N3
+    N3 --> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> |yes| N7
+    N7 --> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 --> N11
+    N11 --> N12
+    nest0_0 -.-> nest0_1
+    N6 -.-> nest0_0
+    nest0_1 -.-> |no| N11
+    nest1_0 --> nest1_1
+    nest1_1 --> |yes| nest1_2
+    nest1_2 --> |no| nest1_3
+    N3 -.-> nest1_0
+    nest1_3 --> N10
+    N1 -.-> S0
+    S0 -.-> N10
+    S0 --> N11
+    S0 -.-> N7
+    S0 --> N4
+    N2 --> S1
+    S1 --> |yes| N6
+    S1 --> N9
+    S1 --> N4
+    N4 -.-> M0
+    N2 --> M0
+    M0 --> N11
+    style S0 fill:#D3D7EB,stroke:#8C9EFF
+    style S1 fill:#E8EAF6,stroke:#5C6BC0
+    style M0 fill:#E8EAF6,stroke:#5C6BC0
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#5C6BC0,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E91E63,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#8C9EFF,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_955.txt b/train/mermaid/hard/mermaid_955.txt
new file mode 100644
index 0000000000000000000000000000000000000000..3d9474174ef8161a42a1794c9aabd65ffcbbf3a3
--- /dev/null
+++ b/train/mermaid/hard/mermaid_955.txt
@@ -0,0 +1,35 @@
+<Assessment Tools, connectedTo, Learning Design Principles>
+<Augmented Reality in Education, connectedTo, Curriculum Digitization>
+<Collaborative Learning Platforms, no, Learning Analytics Dashboards>
+<Collaborative Learning Platforms, partOf, Parent Engagement Tools>
+<Curriculum Digitization, connectedTo, Professional Development for Educators>
+<Curriculum Digitization, yes, Student Information Systems>
+<Digital Textbooks, partOf, Virtual Labs>
+<Digital Textbooks, yes, Formative Assessment Tools>
+<Educational Data Mining, connectedTo, Assessment Tools>
+<Formative Assessment Tools, no, Virtual Classrooms>
+<Formative Assessment Tools, partOf, Virtual Labs>
+<Gamified Learning, connectedTo, Assessment Tools>
+<Gamified Learning, connectedTo, Learning Analytics Dashboards>
+<Gamified Learning, connectedTo, Online Tutoring Platforms>
+<Gamified Learning, connectedTo, Open Educational Resources>
+<Gamified Learning, yes, Curriculum Digitization>
+<Learning Analytics Dashboards, connectedTo, Educational Apps Development>
+<Learning Design Principles, connectedTo, Learning Analytics Dashboards>
+<Massive Open Online Courses, connectedTo, Digital Textbooks>
+<Massive Open Online Courses, partOf, Virtual Labs>
+<Online Tutoring Platforms, connectedTo, Augmented Reality in Education>
+<Online Tutoring Platforms, connectedTo, Learning Analytics Dashboards>
+<Open Educational Resources, connectedTo, Massive Open Online Courses>
+<Open Educational Resources, connectedTo, Online Tutoring Platforms>
+<Personalized Learning Paths, connectedTo, Learning Analytics Dashboards>
+<Personalized Learning Paths, connectedTo, Learning Design Principles>
+<Personalized Learning Paths, connectedTo, Online Tutoring Platforms>
+<Personalized Learning Paths, connectedTo, Student Information Systems>
+<Personalized Learning Paths, no, Gamified Learning>
+<Professional Development for Educators, connectedTo, Collaborative Learning Platforms>
+<Professional Development for Educators, partOf, Parent Engagement Tools>
+<Student Information Systems, connectedTo, Educational Data Mining>
+<Virtual Classrooms, connectedTo, Learning Design Principles>
+<Virtual Classrooms, partOf, Virtual Labs>
+<start, connectedTo, Personalized Learning Paths>
diff --git a/train/mermaid/hard/mermaid_956.mmd b/train/mermaid/hard/mermaid_956.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..2e023739fbd41501589ee8217d59285305038e71
--- /dev/null
+++ b/train/mermaid/hard/mermaid_956.mmd
@@ -0,0 +1,118 @@
+graph LR
+    N0([Educational Data Mining])
+    N1[(Personalized Learning Paths)]
+    N2(Learning Analytics Dashboards)
+    N3[Learning Design Principles]
+    N4[[Professional Development for Educators]]
+    N5[/AI in Education/]
+    N6[(Cybersecurity for EdTech)]
+    N7[Parent Engagement Tools]
+    N8(Learning Management System Development)
+    N9([Simulations for Learning])
+    N10(Virtual Reality in Education)
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    subgraph Educational Apps Development
+        nest0_0[Interactive Content Creation]
+        nest0_1(Augmented Reality in Education)
+    end
+    subgraph Adaptive Learning Systems
+        nest1_0([Massive Open Online Courses])
+        nest1_1[[E_Learning Platform Design]]
+        nest1_2[Teacher Training Platforms]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 -.-> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 --> N9
+    N9 -.-> N10
+    nest0_0 -.-> nest0_1
+    N7 --> nest0_0
+    nest0_1 --> N8
+    nest1_0 -.-> nest1_1
+    nest1_1 --> nest1_2
+    N4 -.-> nest1_0
+    nest1_2 -.-> N7
+    N0 --> S1
+    S1 --> N5
+    S1 -.-> N6
+    S1 --> N10
+    S1 -.-> N7
+    N3 -.-> S2
+    S2 -.-> N5
+    S2 -.-> N9
+    S2 -.-> N8
+    S2 -.-> N10
+    N2 -.-> |partners| M0
+    N3 -.-> M0
+    N1 --> M0
+    M0 -.-> N5
+    N6 -.-> M1
+    N4 -.-> M1
+    N2 --> M1
+    N1 --> M1
+    M1 --> N8
+    style N0 fill:#DACBE3,stroke:#A188D0
+    style N1 fill:#FFFCE6,stroke:#FFF9AE
+    style N2 fill:#DACBE3,stroke:#A188D0
+    style N3 fill:#DACBE3,stroke:#A188D0
+    style N4 fill:#DACBE3,stroke:#A188D0
+    style N5 fill:#FFFCE6,stroke:#FFF9AE
+    style N6 fill:#E4E0DF,stroke:#BDAFA8
+    style N7 fill:#DACBE3,stroke:#A188D0
+    style N8 fill:#FFFCE6,stroke:#FFF9AE
+    style N9 fill:#DACBE3,stroke:#A188D0
+    style N10 fill:#DACBE3,stroke:#A188D0
+    style S1 fill:#E4E0DF,stroke:#BDAFA8
+    style S2 fill:#FFFCE6,stroke:#FFF9AE
+    style M0 fill:#FFFCE6,stroke:#FFF9AE
+    style M1 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_0 fill:#E4E0DF,stroke:#BDAFA8
+    style nest0_1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest1_0 fill:#E4E0DF,stroke:#BDAFA8
+    style nest1_1 fill:#FFFCE6,stroke:#FFF9AE
+    style nest1_2 fill:#E4E0DF,stroke:#BDAFA8
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#A188D0,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#BDAFA8,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#FFF9AE,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#BDAFA8,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_96.mmd b/train/mermaid/hard/mermaid_96.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8531f03e304e27ee5d32bd62fdb7aa8c8ee55d5a
--- /dev/null
+++ b/train/mermaid/hard/mermaid_96.mmd
@@ -0,0 +1,109 @@
+graph BT
+    N0([start])
+    N1[Tourist Information Desk]
+    N2(Language Translation Service)
+    N3(Duty_Free Shopping)
+    N4[(Passport Renewal Assistance)]
+    N5(Travel Insurance)
+    N6[Flight Booking]
+    N7(Photo Capture)
+    N8[/Tour Guide Assignment/]
+    N9([Restaurant Reservation])
+    N10[Souvenir Shopping]
+    N11[Feedback Collection]
+    S1(( ))
+    S2(( ))
+    M0(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Custom Tour Package Creation
+        nest0_0[/Itinerary Planning/]
+        nest0_1[(Destination Selection)]
+        nest0_2(Travel Blog Creation)
+        nest0_3[(Rental Car Pickup)]
+    end
+    subgraph Cruise Ship Boarding
+        nest1_0(Event Reservation)
+        nest1_1(Lost and Found Service)
+        nest1_2[[Hotel Check_in]]
+    end
+    N0 --> N1
+    N1 --> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 -.-> N6
+    N6 -.-> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 --> N10
+    N10 --> N11
+    nest0_0 -.-> nest0_1
+    nest0_1 --> nest0_2
+    nest0_2 -.-> nest0_3
+    N2 -.-> nest0_0
+    nest0_3 --> N6
+    nest1_0 -.-> nest1_1
+    nest1_1 -.-> |yes| nest1_2
+    N10 --> nest1_0
+    nest1_2 -.-> N3
+    N2 -.-> S1
+    S1 --> N7
+    S1 --> N11
+    N1 -.-> S2
+    S2 --> N5
+    S2 --> N11
+    S2 --> N6
+    N9 --> M0
+    N0 --> M0
+    N1 --> |yes| M0
+    M0 -.-> N11
+    N2 --> M1
+    N0 --> M1
+    M1 --> N4
+    N1 -.-> M2
+    N0 -.-> |no| M2
+    M2 --> N3
+    style S1 fill:#F1F8FF,stroke:#42A5F5
+    style S2 fill:#F9FBE7,stroke:#DCE775
+    style M0 fill:#F1F8FF,stroke:#42A5F5
+    style M1 fill:#F1F8FF,stroke:#42A5F5
+    style M2 fill:#F9FBE7,stroke:#DCE775
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#DCE775,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#42A5F5,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#AB47BC,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#AB47BC,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_960.mmd b/train/mermaid/hard/mermaid_960.mmd
new file mode 100644
index 0000000000000000000000000000000000000000..8efd610c758602f31d3792f5c1a0bd07ffe41c39
--- /dev/null
+++ b/train/mermaid/hard/mermaid_960.mmd
@@ -0,0 +1,138 @@
+graph LR
+    N0([start])
+    N1[(EdTech Hardware Solutions)]
+    N2[[Learning Management System Development]]
+    N3[(Student Performance Tracking)]
+    N4{Curriculum Digitization}
+    N5(Adaptive Learning Systems)
+    N6([Augmented Reality in Education])
+    N7[/Formative Assessment Tools/]
+    N8[Learning Analytics Dashboards]
+    N9[Virtual Labs]
+    N10([Parent Engagement Tools])
+    N11[AI in Education]
+    N12{Educational Apps Development}
+    N13[Digital Textbooks]
+    N14(Online Tutoring Platforms)
+    N15[[Simulations for Learning]]
+    N16([Badging and Certification Systems])
+    S0(( ))
+    S1(( ))
+    M1(( ))
+    M2(( ))
+    subgraph Social_Emotional Learning Tools
+        nest0_0(Data Privacy in Education)
+        nest0_1[(Remote Learning Solutions)]
+    end
+    subgraph Accessibility in EdTech
+        nest1_0[Interactive Content Creation]
+        nest1_1[(Teacher Training Platforms)]
+        nest1_2[[Blockchain for Educational Credentials]]
+        nest1_3[(Virtual Classrooms)]
+    end
+    N0 --> N1
+    N1 -.-> N2
+    N2 --> N3
+    N3 -.-> N4
+    N4 -.-> N5
+    N5 --> |assesses| N6
+    N6 --> N7
+    N7 -.-> N8
+    N8 -.-> N9
+    N9 -.-> N10
+    N10 -.-> N11
+    N11 --> N12
+    N12 -.-> N13
+    N13 -.-> N14
+    N14 --> N15
+    N15 --> N16
+    nest0_0 --> nest0_1
+    N3 -.-> nest0_0
+    nest0_1 --> N11
+    nest1_0 --> nest1_1
+    nest1_1 -.-> nest1_2
+    nest1_2 -.-> nest1_3
+    N9 --> nest1_0
+    nest1_3 --> N3
+    N2 --> S0
+    S0 -.-> N7
+    S0 -.-> |develops| N8
+    S0 --> N6
+    N4 -.-> S1
+    S1 -.-> N7
+    S1 --> N6
+    S1 --> N10
+    N5 --> M1
+    N2 -.-> M1
+    M1 -.-> N8
+    N2 --> M2
+    N1 -.-> M2
+    N0 --> M2
+    M2 --> N4
+    style N0 fill:#F0F0F0,stroke:#D2D2D2
+    style N1 fill:#EBEBEB,stroke:#E0E0E0
+    style N2 fill:#EBEBEB,stroke:#E0E0E0
+    style N3 fill:#F0F0F0,stroke:#D2D2D2
+    style N4 fill:#EBEBEB,stroke:#E0E0E0
+    style N5 fill:#F0F0F0,stroke:#D2D2D2
+    style N6 fill:#FFEBEB,stroke:#FFC2C2
+    style N7 fill:#EBEBEB,stroke:#E0E0E0
+    style N8 fill:#F0F0F0,stroke:#D2D2D2
+    style N9 fill:#FFEBEB,stroke:#FFC2C2
+    style N10 fill:#F0F0F0,stroke:#D2D2D2
+    style N11 fill:#F0F0F0,stroke:#D2D2D2
+    style N12 fill:#FFEBEB,stroke:#FFC2C2
+    style N13 fill:#FFEBEB,stroke:#FFC2C2
+    style N14 fill:#F0F0F0,stroke:#D2D2D2
+    style N15 fill:#FFEBEB,stroke:#FFC2C2
+    style N16 fill:#F0F0F0,stroke:#D2D2D2
+    style S0 fill:#F0F0F0,stroke:#D2D2D2
+    style S1 fill:#F0F0F0,stroke:#D2D2D2
+    style M1 fill:#EBEBEB,stroke:#E0E0E0
+    style M2 fill:#F0F0F0,stroke:#D2D2D2
+    style nest0_0 fill:#FFEBEB,stroke:#FFC2C2
+    style nest0_1 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_0 fill:#F0F0F0,stroke:#D2D2D2
+    style nest1_1 fill:#EBEBEB,stroke:#E0E0E0
+    style nest1_2 fill:#EBEBEB,stroke:#E0E0E0
+    style nest1_3 fill:#F0F0F0,stroke:#D2D2D2
+    classDef handwritten font-family:Comic Sans MS,font-size:14px,color:#2b2b2b;
+    linkStyle 0 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 1 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 2 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 3 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 4 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 5 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 6 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 7 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 8 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 9 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 10 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 11 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 12 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 13 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 14 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 15 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 16 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 17 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 18 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 19 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 20 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 21 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 22 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 23 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 24 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 25 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 26 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 27 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 28 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 29 stroke:#FFC2C2,stroke-width:2px,fill:none;
+    linkStyle 30 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 31 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 32 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 33 stroke:#000000,stroke-width:2px,fill:none;
+    linkStyle 34 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 35 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 36 stroke:#D2D2D2,stroke-width:2px,fill:none;
+    linkStyle 37 stroke:#E0E0E0,stroke-width:2px,fill:none;
+    linkStyle 38 stroke:#E0E0E0,stroke-width:2px,fill:none;
\ No newline at end of file
diff --git a/train/mermaid/hard/mermaid_960.txt b/train/mermaid/hard/mermaid_960.txt
new file mode 100644
index 0000000000000000000000000000000000000000..6f6fa72e0784cd4a55709714bab6f8da46c6cc7b
--- /dev/null
+++ b/train/mermaid/hard/mermaid_960.txt
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+<Adaptive Learning Systems, connectedTo, Learning Analytics Dashboards>
+<Augmented Reality in Education, connectedTo, Formative Assessment Tools>
+<Blockchain for Educational Credentials, connectedTo, Virtual Classrooms>
+<Blockchain for Educational Credentials, partOf, Accessibility in EdTech>
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+<Curriculum Digitization, connectedTo, Augmented Reality in Education>
+<Curriculum Digitization, connectedTo, Formative Assessment Tools>
+<Curriculum Digitization, connectedTo, Parent Engagement Tools>
+<Data Privacy in Education, connectedTo, Remote Learning Solutions>
+<Data Privacy in Education, partOf, Social_Emotional Learning Tools>
+<Digital Textbooks, connectedTo, Online Tutoring Platforms>
+<EdTech Hardware Solutions, connectedTo, Curriculum Digitization>
+<EdTech Hardware Solutions, connectedTo, Learning Management System Development>
+<Educational Apps Development, connectedTo, Digital Textbooks>
+<Formative Assessment Tools, connectedTo, Learning Analytics Dashboards>
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+<Interactive Content Creation, partOf, Accessibility in EdTech>
+<Learning Analytics Dashboards, connectedTo, Virtual Labs>
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+<Learning Management System Development, connectedTo, Curriculum Digitization>
+<Learning Management System Development, connectedTo, Formative Assessment Tools>
+<Learning Management System Development, connectedTo, Learning Analytics Dashboards>
+<Learning Management System Development, connectedTo, Student Performance Tracking>
+<Learning Management System Development, develops, Learning Analytics Dashboards>
+<Online Tutoring Platforms, connectedTo, Simulations for Learning>
+<Parent Engagement Tools, connectedTo, AI in Education>
+<Remote Learning Solutions, connectedTo, AI in Education>
+<Remote Learning Solutions, partOf, Social_Emotional Learning Tools>
+<Simulations for Learning, connectedTo, Badging and Certification Systems>
+<Student Performance Tracking, connectedTo, Curriculum Digitization>
+<Student Performance Tracking, connectedTo, Data Privacy in Education>
+<Teacher Training Platforms, connectedTo, Blockchain for Educational Credentials>
+<Teacher Training Platforms, partOf, Accessibility in EdTech>
+<Virtual Classrooms, connectedTo, Student Performance Tracking>
+<Virtual Classrooms, partOf, Accessibility in EdTech>
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diff --git a/train/mermaid/hard/mermaid_97.txt b/train/mermaid/hard/mermaid_97.txt
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+<Agent Assignment, connectedTo, Property Valuation>
+<Brokerage License Renewal, connectedTo, Maintenance Request>
+<Buyer Inquiry, connectedTo, HOA Management>
+<Buyer Inquiry, partOf, Building Permit Application>
+<Commercial Lease Negotiation, connectedTo, Property Insurance>
+<Commercial Lease Negotiation, connectedTo, Rental Agreement>
+<Document Signing, connectedTo, Rental Agreement>
+<HOA Management, connectedTo, Property Insurance>
+<HOA Management, partOf, Building Permit Application>
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+<Home Inspection, connectedTo, Brokerage License Renewal>
+<Home Inspection, connectedTo, Property Listing>
+<Home Inspection, connectedTo, Property Valuation>
+<Home Inspection, manages, Title Check>
+<Maintenance Request, connectedTo, Commission Distribution>
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+<Mortgage Application Assistance, connectedTo, Price Negotiation>
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+<Offer Submission, connectedTo, Property Management>
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+<Ownership Transfer, connectedTo, Mortgage Application Assistance>
+<Price Negotiation, connectedTo, Brokerage License Renewal>
+<Price Negotiation, connectedTo, Commission Distribution>
+<Price Negotiation, connectedTo, Maintenance Request>
+<Property Appraisal, buys, Property Listing>
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+<Property Insurance, connectedTo, Rental Agreement>
+<Property Listing, connectedTo, Zoning Compliance>
+<Property Management, connectedTo, Rental Agreement>
+<Property Management, partOf, Loan Pre_Approval>
+<Property Valuation, connectedTo, Commercial Lease Negotiation>
+<Rental Agreement, connectedTo, Price Negotiation>
+<Tax Assessment, connectedTo, Offer Submission>
+<Tax Assessment, partOf, Loan Pre_Approval>
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diff --git a/train/mermaid/hard/mermaid_98.txt b/train/mermaid/hard/mermaid_98.txt
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+<Building Permit Application, connectedTo, Title Check>
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+<Document Signing, connectedTo, Lease Renewal>
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+<Open House Event, connectedTo, Property Marketing>
+<Property Appraisal, connectedTo, Closing Meeting>
+<Property Marketing, connectedTo, Commission Distribution>
+<Property Marketing, partOf, Escrow Setup>
+<Property Tax Payment, connectedTo, Closing Meeting>
+<Property Tax Payment, connectedTo, Document Signing>
+<Property Tax Payment, connectedTo, Home Inspection>
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+<Tenant Screening, connectedTo, Tax Assessment>
+<Title Check, connectedTo, Property Appraisal>
+<Virtual Tour Creation, connectedTo, Offer Submission>
+<Virtual Tour Creation, partOf, Zoning Compliance>
+<start, connectedTo, Maintenance Request>
diff --git a/train/mermaid/hard/mermaid_99.txt b/train/mermaid/hard/mermaid_99.txt
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+<Commission Distribution, assigns, Virtual Tour Creation>
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+<Eviction Process, connectedTo, Commission Distribution>
+<Eviction Process, partOf, Document Signing>
+<Investment Property Analysis, connectedTo, Property Listing>
+<Land Acquisition, connectedTo, end>
+<Legal Verification, connectedTo, Property Insurance>
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+<Price Negotiation, connectedTo, Title Check>
+<Property Appraisal, connectedTo, Legal Verification>
+<Property Appraisal, connectedTo, Ownership Transfer>
+<Property Appraisal, invests, Virtual Tour Creation>
+<Property Insurance, connectedTo, Renovation Planning>
+<Property Insurance, partOf, Property Valuation>
+<Property Listing, connectedTo, Contract Review>
+<Property Listing, connectedTo, Market Trend Analysis>
+<Property Listing, connectedTo, end>
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+<Property Listing, renovates, Price Negotiation>
+<Property Listing, zones, Market Trend Analysis>
+<Renovation Planning, connectedTo, Property Appraisal>
+<Renovation Planning, partOf, Property Valuation>
+<Tenant Screening, connectedTo, Eviction Process>
+<Tenant Screening, partOf, Document Signing>
+<Title Check, connectedTo, Contract Review>
+<Virtual Tour Creation, connectedTo, Offer Submission>
+<start, connectedTo, Property Appraisal>
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