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(:action (pick_up b10))

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(:action (stack b10 b9))

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(:action (unstack b12 b2))

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(:action (unstack b2 b8))

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(:action (stack b12 b10))

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(:action (unstack b4 b1))

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(:action (stack b4 b5))

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(:action (unstack b12 b10))

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(:action (stack b12 b4))

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(:action (pick_up b2))

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(:action (put_down b2))

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(:action (unstack b1 b6))

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(:action (put_down b1))

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(:action (unstack b6 b3))

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(:action (stack b6 b8))

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(:action (stack b1 b6))

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(:action (pick_up b2))

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(:action (stack b2 b12))

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)