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(15,19).
next(19,20).
next(20,21).
next(21,22).
next(19,23).
next(23,24).
next(24,25).
next(25,26).
next(10,27).
next(27,28).
next(28,29).
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(38,39).
next(36,40).
next(40,41).
next(41,42).
next(42,43).
next(8,44).
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(56,57).
next(54,58).
next(58,59).
next(59,60).
next(60,61).
next(58,62).
next(62,63).
next(63,64).
next(64,65).
next(49,66).
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(75,79).
next(79,80).
next(80,81).
next(81,82).
doAt(startflow,3).
doAt(a10,4).
doAt(a19,5).
doAt(a11,6).
doAt(a20,7).
doAt(a6,8).
doAt(a25,9).
doAt(a15,10).
doAt(a17,11).
doAt(a18,12).
doAt(a24,13).
doAt(a1,14).
doAt(a12,15).
doAt(a21,16).
doAt(endflow,17).
doAt(a3,19).
doAt(a22,20).
doAt(endflow,21).
doAt(a8,23).
doAt(a4,24).
doAt(endflow,25).
doAt(a14,27).
doAt(a2,28).
doAt(a18,29).
doAt(a24,30).
doAt(a1,31).
doAt(a12,32).
doAt(a21,33).
doAt(endflow,34).
doAt(a3,36).
doAt(a22,37).
doAt(endflow,38).
doAt(a8,40).
doAt(a4,41).
doAt(endflow,42).
doAt(a23,44).
doAt(a7,45).
doAt(a13,46).
doAt(a5,47).
doAt(a16,48).
doAt(a15,49).
doAt(a17,50).
doAt(a18,51).
doAt(a24,52).
doAt(a1,53).
doAt(a12,54).
doAt(a21,55).
doAt(endflow,56).
doAt(a3,58).
doAt(a22,59).
doAt(endflow,60).
doAt(a8,62).
doAt(a4,63).
doAt(endflow,64).
doAt(a14,66).
doAt(a2,67).
doAt(a18,68).
doAt(a24,69).
doAt(a1,70).
doAt(a12,71).
doAt(a21,72).
doAt(endflow,73).
doAt(a3,75).
doAt(a22,76).
doAt(endflow,77).
doAt(a8,79).
doAt(a4,80).
doAt(endflow,81).
leftrightnexts(20,23).
leftrightnexts(16,19).
leftrightnexts(37,40).
leftrightnexts(33,36).
leftrightnexts(11,27).
leftrightnexts(59,62).
leftrightnexts(55,58).
leftrightnexts(76,79).
leftrightnexts(72,75).
leftrightnexts(50,66).
leftrightnexts(9,44).