finally, I get it with 0.020 CPU time

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all example:
0: 0 1 2 3 4
5: 5 6 7 8 9
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move 8 onto 2
0: 0 1 2 8
3: 3
4: 4
5: 5 6 7
9: 9
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move 8 over 2
0: 0 1 2 3 4 8
5: 5 6 7
9: 9
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pile 8 onto 2
0: 0 1 2 8 9
3: 3
4: 4
5: 5 6 7
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pile 8 over 2
0: 0 1 2 3 4 8 9
5: 5 6 7