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(14,18).
next(18,19).
next(19,20).
next(20,21).
next(21,22).
next(22,23).
next(23,24).
next(21,25).
next(25,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(30,31).
next(20,32).
next(32,33).
next(7,34).
next(34,35).
next(35,36).
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(41,45).
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(47,59).
next(59,60).
next(6,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(67,71).
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).
next(81,82).
next(82,83).
next(83,84).
next(73,85).
next(85,86).
doAt(startflow,4).
doAt(a13,5).
doAt(a25,6).
doAt(a2,7).
doAt(a4,8).
doAt(a1,9).
doAt(a23,10).
doAt(a5,11).
doAt(a16,12).
doAt(a14,13).
doAt(a15,14).
doAt(a21,15).
doAt(endflow,16).
doAt(a17,18).
doAt(a22,19).
doAt(a6,20).
doAt(a7,21).
doAt(a18,22).
doAt(endflow,23).
doAt(a11,25).
doAt(a12,26).
doAt(a19,27).
doAt(a10,28).
doAt(a9,29).
doAt(endflow,30).
doAt(endflow,32).
doAt(a3,34).
doAt(a8,35).
doAt(a1,36).
doAt(a23,37).
doAt(a5,38).
doAt(a16,39).
doAt(a14,40).
doAt(a15,41).
doAt(a21,42).
doAt(endflow,43).
doAt(a17,45).
doAt(a22,46).
doAt(a6,47).
doAt(a7,48).
doAt(a18,49).
doAt(endflow,50).
doAt(a11,52).
doAt(a12,53).
doAt(a19,54).
doAt(a10,55).
doAt(a9,56).
doAt(endflow,57).
doAt(endflow,59).
doAt(a24,61).
doAt(a1,62).
doAt(a23,63).
doAt(a5,64).
doAt(a16,65).
doAt(a14,66).
doAt(a15,67).
doAt(a21,68).
doAt(endflow,69).
doAt(a17,71).
doAt(a22,72).
doAt(a6,73).
doAt(a7,74).
doAt(a18,75).
doAt(endflow,76).
doAt(a11,78).
doAt(a12,79).
doAt(a19,80).
doAt(a10,81).
doAt(a9,82).
doAt(endflow,83).
doAt(endflow,85).
leftrightnexts(22,25).
leftrightnexts(21,32).
leftrightnexts(15,18).
leftrightnexts(49,52).
leftrightnexts(48,59).
leftrightnexts(42,45).
leftrightnexts(8,34).
leftrightnexts(75,78).
leftrightnexts(74,85).
leftrightnexts(68,71).
leftrightnexts(7,61).