; search time: 41.54
; plan length: 32
(up f0 f16)
(stop f16)
(down f16 f5)
(stop f5)
(up f5 f12)
(stop f12)
(down f12 f2)
(stop f2)
(up f2 f10)
(stop f10)
(up f10 f14)
(stop f14)
(down f14 f9)
(stop f9)
(down f9 f6)
(stop f6)
(up f6 f7)
(stop f7)
(down f7 f6)
(stop f6)
(up f6 f18)
(stop f18)
(up f18 f21)
(stop f21)
(down f21 f1)
(stop f1)
(up f1 f8)
(stop f8)
(up f8 f20)
(stop f20)
(down f20 f17)
(stop f17)
