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(24,25).
next(21,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(19,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(32,37).
next(37,38).
next(38,39).
next(39,40).
next(40,41).
next(13,42).
next(42,43).
next(7,44).
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(53,54).
next(54,55).
next(55,56).
next(53,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(62,63).
next(63,64).
next(60,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(58,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(71,76).
next(76,77).
next(77,78).
next(78,79).
next(79,80).
next(52,81).
next(81,82).
doAt(startflow,3).
doAt(a8,5).
doAt(a12,6).
doAt(a7,7).
doAt(a18,8).
doAt(a22,9).
doAt(a23,10).
doAt(a2,11).
doAt(a20,12).
doAt(a4,13).
doAt(a21,14).
doAt(a16,15).
doAt(endflow,16).
doAt(a24,18).
doAt(a6,19).
doAt(a9,20).
doAt(a15,21).
doAt(a19,22).
doAt(a3,23).
doAt(endflow,24).
doAt(a10,26).
doAt(a11,27).
doAt(a3,28).
doAt(endflow,29).
doAt(a17,31).
doAt(a15,32).
doAt(a19,33).
doAt(a3,34).
doAt(endflow,35).
doAt(a10,37).
doAt(a11,38).
doAt(a3,39).
doAt(endflow,40).
doAt(endflow,42).
doAt(a5,44).
doAt(a14,45).
doAt(a1,46).
doAt(a25,47).
doAt(a22,48).
doAt(a23,49).
doAt(a2,50).
doAt(a20,51).
doAt(a4,52).
doAt(a21,53).
doAt(a16,54).
doAt(endflow,55).
doAt(a24,57).
doAt(a6,58).
doAt(a9,59).
doAt(a15,60).
doAt(a19,61).
doAt(a3,62).
doAt(endflow,63).
doAt(a10,65).
doAt(a11,66).
doAt(a3,67).
doAt(endflow,68).
doAt(a17,70).
doAt(a15,71).
doAt(a19,72).
doAt(a3,73).
doAt(endflow,74).
doAt(a10,76).
doAt(a11,77).
doAt(a3,78).
doAt(endflow,79).
doAt(endflow,81).
subsAt(a8,4).
leftrightnexts(22,26).
leftrightnexts(33,37).
leftrightnexts(20,31).
leftrightnexts(15,18).
leftrightnexts(14,42).
leftrightnexts(61,65).
leftrightnexts(72,76).
leftrightnexts(59,70).
leftrightnexts(54,57).
leftrightnexts(53,81).
leftrightnexts(8,44).