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(10,14).
next(14,15).
next(15,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(9,22).
next(22,23).
next(23,24).
next(6,25).
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(35,36).
next(36,37).
next(37,38).
next(38,39).
next(27,40).
next(40,41).
next(41,42).
next(4,43).
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(48,52).
next(52,53).
next(53,54).
next(54,55).
next(55,56).
next(56,57).
next(57,58).
next(58,59).
next(47,60).
next(60,61).
next(61,62).
next(43,63).
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).
next(73,74).
next(71,75).
next(75,76).
next(76,77).
next(77,78).
next(78,79).
next(79,80).
next(80,81).
next(81,82).
next(70,83).
next(83,84).
next(84,85).
doAt(startflow,3).
doAt(a17,4).
doAt(a11,5).
doAt(a16,6).
doAt(a7,7).
doAt(a25,8).
doAt(a8,9).
doAt(a2,10).
doAt(a6,11).
doAt(endflow,12).
doAt(a15,14).
doAt(a22,15).
doAt(a21,16).
doAt(a18,17).
doAt(a5,18).
doAt(a13,19).
doAt(endflow,20).
doAt(a12,22).
doAt(endflow,23).
doAt(a23,25).
doAt(a25,26).
doAt(a8,27).
doAt(a2,28).
doAt(a6,29).
doAt(endflow,30).
doAt(a15,32).
doAt(a22,33).
doAt(a21,34).
doAt(a18,35).
doAt(a5,36).
doAt(a13,37).
doAt(endflow,38).
doAt(a12,40).
doAt(endflow,41).
doAt(a14,43).
doAt(a4,44).
doAt(a19,45).
doAt(a25,46).
doAt(a8,47).
doAt(a2,48).
doAt(a6,49).
doAt(endflow,50).
doAt(a15,52).
doAt(a22,53).
doAt(a21,54).
doAt(a18,55).
doAt(a5,56).
doAt(a13,57).
doAt(endflow,58).
doAt(a12,60).
doAt(endflow,61).
doAt(a1,63).
doAt(a24,64).
doAt(a3,65).
doAt(a20,66).
doAt(a10,67).
doAt(a19,68).
doAt(a25,69).
doAt(a8,70).
doAt(a2,71).
doAt(a6,72).
doAt(endflow,73).
doAt(a15,75).
doAt(a22,76).
doAt(a21,77).
doAt(a18,78).
doAt(a5,79).
doAt(a13,80).
doAt(endflow,81).
doAt(a12,83).
doAt(endflow,84).
leftrightnexts(11,14).
leftrightnexts(10,22).
leftrightnexts(29,32).
leftrightnexts(28,40).
leftrightnexts(7,25).
leftrightnexts(49,52).
leftrightnexts(48,60).
leftrightnexts(72,75).
leftrightnexts(71,83).
leftrightnexts(44,63).
leftrightnexts(5,43).