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<Analysis>
Starting state: there are 1 stacks:
- Stack 1: yellow block, green block, blue block, purple block, orange block, from bottom to top
Ending state: there are 4 stacks:
- Stack 1: orange block (alone)
- Stack 2: yellow block (alone)
- Stack 3: green block (alone)
- Stack 4: blue block, purple block, from bottom to top