Parent State ID: 5
State Depth: 4
Action Taken: stack(c, a)
Action Reasoning: The goal is to have block c on block a. Since the hand is already holding block c and block a is clear, the best action is to stack c on a.
State Description: Block a is on block b, block c is on block a, and block d is on the table. Blocks c and d are clear. The hand is empty.
Action Path: ['unstack(d, c)', 'put-down(d)', 'pick-up(c)', 'stack(c, a)']
