Subtask 
-------- 
Dilation SE5
Dilation SE8
 Erosion SE5
 Erosion SE8
Dilation SE3
Dilation SE1
 Erosion SE3
 Erosion SE1

Subtask 
-------- 
Dilation SE1
Dilation SE3
 Erosion SE1
 Erosion SE3
Dilation SE3
Dilation SE1
 Erosion SE3
 Erosion SE1

Subtask 
-------- 
Dilation SE1
Dilation SE3
 Erosion SE1
 Erosion SE3
Dilation SE3
Dilation SE1
 Erosion SE3
 Erosion SE1