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(15,19).
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(29,30).
next(30,31).
next(28,32).
next(32,33).
next(33,34).
next(34,35).
next(22,36).
next(36,37).
next(37,38).
next(38,39).
next(39,40).
next(40,41).
next(41,42).
next(42,43).
next(43,44).
next(44,45).
next(45,46).
next(43,47).
next(47,48).
next(48,49).
next(49,50).
next(19,51).
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(53,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
next(76,77).
next(74,78).
next(78,79).
next(79,80).
next(80,81).
doAt(startflow,6).
doAt(a16,7).
doAt(a2,9).
doAt(a22,11).
doAt(a9,13).
doAt(a18,14).
doAt(a5,15).
doAt(a23,16).
doAt(endflow,17).
doAt(a19,19).
doAt(a21,20).
doAt(a20,21).
doAt(a3,22).
doAt(a10,23).
doAt(a6,24).
doAt(a8,25).
doAt(a17,26).
doAt(a12,27).
doAt(a13,28).
doAt(a25,29).
doAt(endflow,30).
doAt(a24,32).
doAt(a7,33).
doAt(endflow,34).
doAt(a11,36).
doAt(a14,37).
doAt(a4,38).
doAt(a6,39).
doAt(a8,40).
doAt(a17,41).
doAt(a12,42).
doAt(a13,43).
doAt(a25,44).
doAt(endflow,45).
doAt(a24,47).
doAt(a7,48).
doAt(endflow,49).
doAt(a1,51).
doAt(a20,52).
doAt(a3,53).
doAt(a10,54).
doAt(a6,55).
doAt(a8,56).
doAt(a17,57).
doAt(a12,58).
doAt(a13,59).
doAt(a25,60).
doAt(endflow,61).
doAt(a24,63).
doAt(a7,64).
doAt(endflow,65).
doAt(a11,67).
doAt(a14,68).
doAt(a4,69).
doAt(a6,70).
doAt(a8,71).
doAt(a17,72).
doAt(a12,73).
doAt(a13,74).
doAt(a25,75).
doAt(endflow,76).
doAt(a24,78).
doAt(a7,79).
doAt(endflow,80).
compAt(a9,x6,12).
subsAt(a2,8).
subsAt(a22,10).
leftrightnexts(29,32).
leftrightnexts(44,47).
leftrightnexts(23,36).
leftrightnexts(60,63).
leftrightnexts(75,78).
leftrightnexts(54,67).
leftrightnexts(20,51).
leftrightnexts(16,19).