Attempt Number: 2
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
Move passenger p2 from floor 4 to floor 2 using fast1 to bring p2 closer to the goal, where p2 needs to be on floor 2.

New State Description:
- fast0: Fast elevator at floor 0 (n0), 0/2 passengers.- fast1: Fast elevator at floor 4 (n4), 1/2 passengers (p2 onboard).- slow0-0: Slow elevator at floor 1 (n1), 0/1 passengers.- slow1-0: Slow elevator at floor 3 (n3), 0/1 passengers.- p0: On floor 1 (n1).- p1: On floor 1 (n1).- p2: Onboard fast1 at floor 4 (n4).- p3: On floor 4 (n4).- p4: On floor 1 (n1).- p5: On floor 2 (n2), clear.

Action Chosen:
board(p2, fast1, n4, 0, 1)
