Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
We need car_2 clear to move it to curb_2, per the goal state. Moving car_1, clears it from behind car_2, providing immediate progress.

New State Description:
Curb_0: car_2 is parked and clear.Curb_1: car_0 is parked and clear.Curb_2: car_1 is parked and clear.Curb_3: car_3 is parked and clear.

Action Chosen:
(move-car-to-curb car_1 car_2 curb_2)
