Attempt Number: 3
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 need to place block 'c' on the table so it can support blocks 'a', 'b', and 'd' in the correct order.

New State Description:
There are four blocks: a, b, c, and d. The hand is empty. Block a is on the table. Block d is on top of block a and is clear. Block b is on the table and is clear. Block c is now on the table and is clear.

Action Chosen:
put-down(c)
