(refuel plane2)
(board person3 plane2 city2)
(fly-slow plane2 city2 city3)
(board person6 plane2 city3)
(board person7 plane2 city3)
(fly-slow plane2 city3 city4)
(debark person3 plane2 city4)
(debark person6 plane2 city4)
(debark person7 plane2 city4)
(board person1 plane2 city4)
(board person5 plane2 city4)
(fly-slow plane2 city4 city2)
(debark person1 plane2 city2)
(refuel plane2)
(fly-slow plane2 city2 city1)
(debark person5 plane2 city1)
(board person2 plane2 city1)
(fly-slow plane2 city1 city0)
(debark person2 plane2 city0)
(board person4 plane2 city0)
(fly-slow plane2 city0 city3)
(debark person4 plane2 city3)
; cost = 22 (unit cost)
