Parent State ID: 20
State Depth: 5
Action Taken: unstack(block_b, block_d)
Action Reasoning: The goal is to stack blocks B, D, and C together with D on top of C. Since B is currently on D, but C is on the table, the next step should be to get D onto C by clearing D. Thus, the first step is to move block B to the table so that block D can be stacked onto block C.
State Description: Block A is on the table and clear. Block B is in the hand and not clear. Block C is on the table and clear. Block D is on the table and clear. The hand is holding block B.
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)']

successfully verified the action of new state 32 with the path: The last action unstack(block_b, block_d) is valid as all preconditions are met, and the effects are correctly reflected in the current state. The natural language description, diagram encoding, and visualization of the current state are all accurate and consistent with the sequence of actions taken.
