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

Action Reasoning:
Passenger p5 needs to get down to floor 0. Fast1 can now board p5 and take it down to the destination, minimizing further steps.

New State Description:
- **fast0**: At floor 2 (n2), 0/2 passengers.- **fast1**: At floor 5 (n5), 2/2 passengers, p2 and p5 onboard.- **slow0-0**: At floor 2 (n2), 0/1 passengers.- **p0**: On floor 4 (n4).- **p1**: On floor 1 (n1).- **p2**: Onboard fast1 at floor 5 (n5).- **p3**: On floor 4 (n4).- **p4**: On floor 2 (n2).- **p5**: Onboard fast1 at floor 5 (n5).- **p6**: On floor 2 (n2).

Action Chosen:
(board p5 fast1 n5 1 2)
