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(10,19).
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(19,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(36,37).
next(37,38).
next(38,39).
next(29,40).
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(42,51).
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(55,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
doAt(startflow,7).
doAt(a25,10).
doAt(a11,11).
doAt(a2,12).
doAt(a15,13).
doAt(a12,14).
doAt(a14,15).
doAt(a23,16).
doAt(endflow,17).
doAt(a24,19).
doAt(a19,21).
doAt(a15,22).
doAt(a12,23).
doAt(a14,24).
doAt(a23,26).
doAt(endflow,27).
doAt(a18,29).
doAt(a21,32).
doAt(a15,33).
doAt(a12,34).
doAt(a14,35).
doAt(a23,37).
doAt(endflow,38).
doAt(a3,40).
doAt(a13,41).
doAt(a5,42).
doAt(a17,43).
doAt(a15,44).
doAt(a12,45).
doAt(a14,46).
doAt(a23,48).
doAt(endflow,49).
doAt(a10,52).
doAt(a7,53).
doAt(a6,55).
doAt(a16,56).
doAt(a15,57).
doAt(a12,58).
doAt(a14,59).
doAt(a23,60).
doAt(endflow,61).
doAt(a8,63).
doAt(a9,64).
doAt(a4,65).
doAt(a1,66).
doAt(a22,67).
doAt(a15,68).
doAt(a12,69).
doAt(a14,70).
doAt(a23,71).
doAt(endflow,72).
compAt(a15,x3,8).
compAt(a2,x3,9).
compAt(a15,x12,20).
compAt(a2,x1,25).
compAt(a15,x8,30).
compAt(a15,x12,31).
compAt(a2,x1,36).
compAt(a2,x1,47).
compAt(a15,x12,51).
compAt(a2,x1,54).
leftrightnexts(56,63).
leftrightnexts(43,51).
leftrightnexts(30,40).
leftrightnexts(20,29).
leftrightnexts(11,19).