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(18,22).
next(22,23).
next(23,24).
next(24,25).
next(22,26).
next(26,27).
next(27,28).
next(13,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(36,37).
next(37,38).
next(38,39).
next(39,40).
next(37,41).
next(41,42).
next(42,43).
next(43,44).
next(41,45).
next(45,46).
next(46,47).
next(9,48).
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(57,58).
next(58,59).
next(56,60).
next(60,61).
next(61,62).
next(62,63).
next(60,64).
next(64,65).
next(65,66).
next(51,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
next(76,77).
next(77,78).
next(75,79).
next(79,80).
next(80,81).
next(81,82).
next(79,83).
next(83,84).
next(84,85).
doAt(startflow,3).
doAt(a3,5).
doAt(a7,6).
doAt(a15,7).
doAt(a10,8).
doAt(a17,9).
doAt(a9,10).
doAt(a2,11).
doAt(a20,12).
doAt(a12,13).
doAt(a4,14).
doAt(a6,15).
doAt(a22,16).
doAt(a8,17).
doAt(a25,18).
doAt(a21,19).
doAt(endflow,20).
doAt(a13,22).
doAt(a19,23).
doAt(endflow,24).
doAt(a23,26).
doAt(endflow,27).
doAt(a18,29).
doAt(a11,30).
doAt(a24,31).
doAt(a1,32).
doAt(a5,33).
doAt(a6,34).
doAt(a22,35).
doAt(a8,36).
doAt(a25,37).
doAt(a21,38).
doAt(endflow,39).
doAt(a13,41).
doAt(a19,42).
doAt(endflow,43).
doAt(a23,45).
doAt(endflow,46).
doAt(a14,48).
doAt(a2,49).
doAt(a20,50).
doAt(a12,51).
doAt(a4,52).
doAt(a6,53).
doAt(a22,54).
doAt(a8,55).
doAt(a25,56).
doAt(a21,57).
doAt(endflow,58).
doAt(a13,60).
doAt(a19,61).
doAt(endflow,62).
doAt(a23,64).
doAt(endflow,65).
doAt(a18,67).
doAt(a11,68).
doAt(a24,69).
doAt(a1,70).
doAt(a5,71).
doAt(a6,72).
doAt(a22,73).
doAt(a8,74).
doAt(a25,75).
doAt(a21,76).
doAt(endflow,77).
doAt(a13,79).
doAt(a19,80).
doAt(endflow,81).
doAt(a23,83).
doAt(endflow,84).
compAt(a3,x18,4).
leftrightnexts(23,26).
leftrightnexts(19,22).
leftrightnexts(42,45).
leftrightnexts(38,41).
leftrightnexts(14,29).
leftrightnexts(61,64).
leftrightnexts(57,60).
leftrightnexts(80,83).
leftrightnexts(76,79).
leftrightnexts(52,67).
leftrightnexts(10,48).