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

Action Reasoning:
The next step is to remove car_2 from its double-parked position. Move car_2 from behind car_3 to the empty curb_1, clearing car_3. This clears curb_1 without affecting other cars' placement.

New State Description:
Curb_0 contains car_0, clear. Curb_1 contains car_2, clear. Curb_2 contains car_3, clear. Curb_3 contains car_1, clear. Car_0 is parked and clear. Car_1 is parked and clear. Car_2 is parked and clear on curb_1. Car_3 is parked and clear on curb_2.

Action Chosen:
(move-car-to-curb car_2 car_3 curb_1)
