Current State ID: 21
Current State Description: Curb_0 contains car_0, clear. Curb_1 contains car_2, with car_1 double-parked behind car_2. Car_2 is not clear, while car_1 is clear. Curb_2 contains car_3, clear. Curb_3 is now empty and clear.

Child State ID: 31
Action Taken: (move-car-to-curb car_1 car_2 curb_3)
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.

