Parent State ID: 61
State Depth: 10
Action Taken: stack(block_d, block_c)
Action Reasoning: The hand is currently holding block D, and block C needs to be the base of the final stack. The best move is to stack block D on block C to begin building up the goal structure.
State Description: Block A is on the table and clear. Block B is on the table and clear. Block C is on the table and not clear, with block D stacked on it. Block D is on block C and clear. The hand is empty.
Action Path: ['unstack(block_b, block_c)', 'stack(block_b, block_d)', 'unstack(block_b, block_d)', 'stack(block_b, block_d)', 'unstack(block_b, block_d)', 'stack(block_b, block_c)', 'unstack(block_b, block_c)', 'put-down(block_b)', 'pick-up(block_d)', 'stack(block_d, block_c)']

successfully verified the action of new state 74 with the path: The last action `stack(block_d, block_c)` is valid as it meets all preconditions: the hand is holding block D, and block C is clear. The current state's natural language description, diagram encoding, and visualization accurately reflect the sequence of actions taken. All objects are correctly visualized, and no constraints are violated.
