Parent State ID: 1
State Depth: 2
Action Taken: put-down(d)
Action Reasoning: To achieve the goal state where block C is on block A, we first need to put down block D to free the hand, allowing us to manipulate other blocks.
State Description: Block a is on block b, block c is on the table, and block d is on the table. Blocks a, c, and d are clear. The hand is empty.
Action Path: ['unstack(d, c)', 'put-down(d)']
