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(18,19).
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(25,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(32,36).
next(36,37).
next(37,38).
next(20,39).
next(39,40).
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(50,51).
next(51,52).
next(52,53).
next(50,54).
next(54,55).
next(55,56).
next(56,57).
next(57,58).
next(58,59).
next(59,60).
next(57,61).
next(61,62).
next(62,63).
next(42,64).
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(70,74).
next(74,75).
next(75,76).
next(76,77).
next(77,78).
next(78,79).
next(79,80).
next(77,81).
next(81,82).
next(82,83).
doAt(startflow,7).
doAt(a30,8).
doAt(a27,9).
doAt(a35,10).
doAt(a15,11).
doAt(a4,13).
doAt(a10,14).
doAt(a5,15).
doAt(a21,16).
doAt(a20,17).
doAt(a28,18).
doAt(a18,19).
doAt(a32,20).
doAt(a22,21).
doAt(a12,22).
doAt(a19,23).
doAt(a16,24).
doAt(a23,25).
doAt(a1,26).
doAt(endflow,27).
doAt(a8,29).
doAt(a7,30).
doAt(a24,31).
doAt(a6,32).
doAt(a25,33).
doAt(endflow,34).
doAt(a34,36).
doAt(endflow,37).
doAt(a11,39).
doAt(a3,40).
doAt(a33,41).
doAt(a26,42).
doAt(a29,43).
doAt(a9,44).
doAt(a31,45).
doAt(a14,46).
doAt(a17,47).
doAt(a19,48).
doAt(a16,49).
doAt(a23,50).
doAt(a1,51).
doAt(endflow,52).
doAt(a8,54).
doAt(a7,55).
doAt(a24,56).
doAt(a6,57).
doAt(a25,58).
doAt(endflow,59).
doAt(a34,61).
doAt(endflow,62).
doAt(a13,64).
doAt(a31,65).
doAt(a14,66).
doAt(a17,67).
doAt(a19,68).
doAt(a16,69).
doAt(a23,70).
doAt(a1,71).
doAt(endflow,72).
doAt(a8,74).
doAt(a7,75).
doAt(a24,76).
doAt(a6,77).
doAt(a25,78).
doAt(endflow,79).
doAt(a34,81).
doAt(endflow,82).
subsAt(a4,12).
leftrightnexts(33,36).
leftrightnexts(26,29).
leftrightnexts(58,61).
leftrightnexts(51,54).
leftrightnexts(78,81).
leftrightnexts(71,74).
leftrightnexts(43,64).
leftrightnexts(21,39).