Parent State ID: 49
State Depth: 13
Action Taken: unstack(d, c)
Action Reasoning: To achieve the goal state, we need to move block 'd' from block 'c' to the table, making 'c' clear so we can unstack it from 'b'. This will allow us to place 'd' on 'c' and 'a' on 'b' as required.
State Description: Block 'a' is on the table and clear. Block 'c' is on top of block 'b' and clear. Block 'b' is on the table. Block 'd' is held in the hand. The hand is not empty.
Action Path: ['unstack(d, a)', 'put-down(d)', 'unstack(a, c)', 'put-down(a)', 'pick-up(d)', 'stack(d, c)', 'unstack(d, c)', 'stack(d, c)', 'unstack(d, c)', 'stack(d, c)', 'unstack(d, c)', 'stack(d, c)', 'unstack(d, c)']
