(refuel plane1)
(fly-slow plane1 city4 city5)
(board person7 plane1 city5)
(fly-slow plane1 city5 city0)
(debark person7 plane1 city0)
(board person4 plane1 city0)
(fly-slow plane1 city0 city2)
(board person6 plane1 city2)
(board person2 plane1 city2)
(refuel plane1)
(debark person4 plane1 city2)
(fly-fast plane1 city2 city4)
(debark person6 plane1 city4)
(fly-slow plane1 city4 city1)
(debark person2 plane1 city1)
; cost = 15 (unit cost)
