next(1,2).
next(2,3).
next(3,4).
next(4,5).
next(5,6).
next(6,7).
next(7,8).
next(8,9).
next(9,10).
next(10,11).
next(11,12).
next(12,13).
next(13,14).
next(14,15).
next(15,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(21,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(22,27).
next(27,28).
next(28,29).
next(29,30).
next(30,31).
next(27,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(36,37).
next(37,38).
next(34,39).
next(39,40).
next(40,41).
next(41,42).
next(42,43).
next(13,44).
next(44,45).
next(45,46).
next(46,47).
next(47,48).
next(48,49).
next(49,50).
next(50,51).
next(51,52).
next(52,53).
next(53,54).
next(54,55).
next(55,56).
next(52,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(57,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(64,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
doAt(startflow,7).
doAt(a11,8).
doAt(a23,10).
doAt(a6,12).
doAt(a9,13).
doAt(a24,14).
doAt(a16,15).
doAt(a14,16).
doAt(a19,17).
doAt(a22,18).
doAt(a4,19).
doAt(a7,20).
doAt(a21,21).
doAt(a8,22).
doAt(a12,23).
doAt(a10,24).
doAt(endflow,25).
doAt(a25,27).
doAt(a20,28).
doAt(a10,29).
doAt(endflow,30).
doAt(a13,32).
doAt(a2,33).
doAt(a1,34).
doAt(a3,35).
doAt(a10,36).
doAt(endflow,37).
doAt(a18,39).
doAt(a5,40).
doAt(a10,41).
doAt(endflow,42).
doAt(a17,44).
doAt(a16,45).
doAt(a14,46).
doAt(a19,47).
doAt(a22,48).
doAt(a4,49).
doAt(a7,50).
doAt(a21,51).
doAt(a8,52).
doAt(a12,53).
doAt(a10,54).
doAt(endflow,55).
doAt(a25,57).
doAt(a20,58).
doAt(a10,59).
doAt(endflow,60).
doAt(a13,62).
doAt(a2,63).
doAt(a1,64).
doAt(a3,65).
doAt(a10,66).
doAt(endflow,67).
doAt(a18,69).
doAt(a5,70).
doAt(a10,71).
doAt(endflow,72).
compAt(a24,x25,9).
compAt(a24,x14,11).
leftrightnexts(35,39).
leftrightnexts(28,32).
leftrightnexts(23,27).
leftrightnexts(65,69).
leftrightnexts(58,62).
leftrightnexts(53,57).
leftrightnexts(14,44).