Parent State ID: 8
State Depth: 5
Action Taken: pick-up(c)
Action Reasoning: To achieve the goal state, we need to stack block c on block a. Since block c is clear and the hand is empty, we can pick up block c.
State Description: The hand is holding block c. Block a is on the table and clear. Block b is on the table with block d on top of it. Block d is on block b and is clear. Block c is no longer on the table and is not clear.
Action Path: ['unstack(c, d)', 'put-down(c)', 'unstack(d, a)', 'stack(d, b)', 'pick-up(c)']
