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(26,27).
next(27,28).
next(28,29).
next(26,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(32,36).
next(36,37).
next(37,38).
next(38,39).
next(12,40).
next(40,41).
next(41,42).
next(42,43).
next(43,44).
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(56,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(59,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(65,69).
next(69,70).
next(70,71).
next(71,72).
doAt(startflow,7).
doAt(a9,11).
doAt(a18,12).
doAt(a16,15).
doAt(a6,16).
doAt(a10,18).
doAt(a14,19).
doAt(a2,20).
doAt(a1,21).
doAt(a4,22).
doAt(a8,23).
doAt(a7,24).
doAt(a5,25).
doAt(a17,26).
doAt(a15,27).
doAt(endflow,28).
doAt(a11,30).
doAt(a12,31).
doAt(a25,32).
doAt(a24,33).
doAt(endflow,34).
doAt(a23,36).
doAt(a13,37).
doAt(endflow,38).
doAt(a20,40).
doAt(a3,41).
doAt(a22,45).
doAt(a19,47).
doAt(a6,48).
doAt(a10,50).
doAt(a14,52).
doAt(a2,53).
doAt(a1,54).
doAt(a4,55).
doAt(a8,56).
doAt(a7,57).
doAt(a5,58).
doAt(a17,59).
doAt(a15,60).
doAt(endflow,61).
doAt(a11,63).
doAt(a12,64).
doAt(a25,65).
doAt(a24,66).
doAt(endflow,67).
doAt(a23,69).
doAt(a13,70).
doAt(endflow,71).
compAt(a16,x9,8).
compAt(a9,x9,9).
compAt(a16,x9,14).
compAt(a10,x8,17).
compAt(a16,x4,42).
compAt(a16,x9,43).
compAt(a16,x22,44).
compAt(a6,x1,46).
compAt(a10,x8,49).
compAt(a16,x21,51).
subsAt(a9,10).
subsAt(a16,13).
leftrightnexts(33,36).
leftrightnexts(27,30).
leftrightnexts(66,69).
leftrightnexts(60,63).
leftrightnexts(13,40).