Attempt Number: 3
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To get closer to the goal, I'll move car_2 parked behind car_1 to the empty curb_1. This sets curb_2 clear, freeing car_1 to be moved next.

New State Description:
Curb_0 contains car_0, clear. Curb_1 contains car_2, clear now. Curb_2 contains car_1, clear now. Curb_3 contains car_3, clear. Car_0 is clear. Car_1 is clear. Car_2 is clear. Car_3 is clear.

Action Chosen:
(move-car-to-curb car_2 car_1 curb_1)
