blocks/task3/example/level4/text_input/6.txt

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

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

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

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