; search time: 0.01
; plan length: 16
(fly plane1 city0 city3 fl6 fl5)
(fly plane3 city0 city1 fl3 fl2)
(board person1 plane3 city1)
(fly plane3 city1 city0 fl2 fl1)
(debark person1 plane3 city0)
(fly plane3 city0 city2 fl1 fl0)
(board person3 plane3 city2)
(refuel plane3 city2 fl0 fl1)
(fly plane3 city2 city1 fl1 fl0)
(debark person3 plane3 city1)
(refuel plane2 city3 fl0 fl1)
(fly plane2 city3 city4 fl1 fl0)
(board person6 plane2 city4)
(refuel plane2 city4 fl0 fl1)
(fly plane2 city4 city2 fl1 fl0)
(debark person6 plane2 city2)
