Parent State ID: 12
State Depth: 4
Action Taken: stack(block_b, block_d)
Action Reasoning: The next best action is to stack block B on block D because this moves us towards the goal formation where block B is supporting block A and is itself supported by block D.
State Description: Block A is on the table and clear. Block B is on block D and clear. Block C is on the table and clear. Block D is on the table and not 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)']

successfully verified the action of new state 20 with the path: The last action and the current state's natural language description and visualization are all valid. The preconditions for the last action are met, and the effects are correctly reflected in the current state. The sequence of actions logically progresses towards the goal state.
