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(12,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(17,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(24,29).
next(29,30).
next(30,31).
next(31,32).
next(8,33).
next(33,34).
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(38,43).
next(43,44).
next(44,45).
next(45,46).
next(46,47).
next(43,48).
next(48,49).
next(49,50).
next(50,51).
next(51,52).
next(52,53).
next(53,54).
next(50,55).
next(55,56).
next(56,57).
next(57,58).
next(34,59).
next(59,60).
next(60,61).
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(65,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(70,75).
next(75,76).
next(76,77).
next(77,78).
next(78,79).
next(79,80).
next(80,81).
next(77,82).
next(82,83).
next(83,84).
next(84,85).
doAt(startflow,4).
doAt(a7,5).
doAt(a22,6).
doAt(a23,7).
doAt(a16,8).
doAt(a24,9).
doAt(a17,10).
doAt(a21,11).
doAt(a18,12).
doAt(a25,13).
doAt(a8,14).
doAt(endflow,15).
doAt(a4,17).
doAt(a5,18).
doAt(a8,19).
doAt(endflow,20).
doAt(a13,22).
doAt(a20,23).
doAt(a2,24).
doAt(a11,25).
doAt(a8,26).
doAt(endflow,27).
doAt(a12,29).
doAt(a8,30).
doAt(endflow,31).
doAt(a19,33).
doAt(a1,34).
doAt(a10,35).
doAt(a17,36).
doAt(a21,37).
doAt(a18,38).
doAt(a25,39).
doAt(a8,40).
doAt(endflow,41).
doAt(a4,43).
doAt(a5,44).
doAt(a8,45).
doAt(endflow,46).
doAt(a13,48).
doAt(a20,49).
doAt(a2,50).
doAt(a11,51).
doAt(a8,52).
doAt(endflow,53).
doAt(a12,55).
doAt(a8,56).
doAt(endflow,57).
doAt(a3,59).
doAt(a15,60).
doAt(a6,61).
doAt(a9,62).
doAt(a17,63).
doAt(a21,64).
doAt(a18,65).
doAt(a25,66).
doAt(a8,67).
doAt(endflow,68).
doAt(a4,70).
doAt(a5,71).
doAt(a8,72).
doAt(endflow,73).
doAt(a13,75).
doAt(a20,76).
doAt(a2,77).
doAt(a11,78).
doAt(a8,79).
doAt(endflow,80).
doAt(a12,82).
doAt(a8,83).
doAt(endflow,84).
leftrightnexts(25,29).
leftrightnexts(18,22).
leftrightnexts(13,17).
leftrightnexts(51,55).
leftrightnexts(44,48).
leftrightnexts(39,43).
leftrightnexts(78,82).
leftrightnexts(71,75).
leftrightnexts(66,70).
leftrightnexts(35,59).
leftrightnexts(9,33).