; total time: 53.20
; plan length: 109
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(board person12 plane5 city15)
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(refuel plane2 city0 fl1 fl2)
(fly plane1 city5 city1 fl2 fl1)
(board person3 plane5 city12)
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(fly plane3 city13 city5 fl1 fl0)
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(refuel plane3 city5 fl0 fl1)
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(debark person15 plane1 city14)
(board person5 plane5 city4)
(refuel plane5 city4 fl0 fl1)
(debark person1 plane5 city4)
(fly plane5 city4 city11 fl1 fl0)
(refuel plane5 city11 fl0 fl1)
(fly plane5 city11 city12 fl1 fl0)
(debark person4 plane5 city12)
(debark person5 plane5 city12)
