(A)
- Stack with purple block, blue block, orange block, green block, yellow block, from bottom to top

(B)
- Stack with red block
- Stack with green block
- Stack with orange block
- Stack with purple block

(C)
- Stack with purple block, orange block, yellow block, blue block, red block, from bottom to top

(D)
- Stack with orange block
- Stack with green block, red block, purple block, from bottom to top