Attempt Number: 2
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To progress towards the goal state, we should put block c on the table, as it needs to support block b in the final arrangement.

New State Description:
Block c is now on the table and clear. Block b remains clear and on the table. Block d is still on block a, with block d clear. The hand is empty.

Action Chosen:
put-down(c)
