Parent State ID: 8
State Depth: 4
Action Taken: stack(c, a)
Action Reasoning: To achieve the goal state where block C is on block A, we should stack block C on block A since block A is clear and the hand is holding block C.
State Description: Block a is on block b and supporting block c. Block c is on block a and clear. Block d is on the table and clear. The hand is empty.
Action Path: ['unstack(d, c)', 'put-down(d)', 'pick-up(c)', 'stack(c, a)']
