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(25,26).
next(23,27).
next(27,28).
next(28,29).
next(22,30).
next(30,31).
next(16,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(36,37).
next(34,38).
next(38,39).
next(39,40).
next(40,41).
next(41,42).
next(39,43).
next(43,44).
next(44,45).
next(38,46).
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(59,60).
next(57,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(62,66).
next(66,67).
next(67,68).
next(61,69).
next(69,70).
next(55,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
next(73,77).
next(77,78).
next(78,79).
next(79,80).
next(80,81).
next(78,82).
next(82,83).
next(83,84).
next(77,85).
next(85,86).
doAt(startflow,3).
doAt(a25,5).
doAt(a5,6).
doAt(a6,7).
doAt(a11,8).
doAt(a20,9).
doAt(a4,10).
doAt(a19,11).
doAt(a24,12).
doAt(a15,13).
doAt(a18,14).
doAt(a9,15).
doAt(a17,16).
doAt(a14,17).
doAt(a7,18).
doAt(a16,19).
doAt(endflow,20).
doAt(a23,22).
doAt(a8,23).
doAt(a10,24).
doAt(endflow,25).
doAt(a1,27).
doAt(endflow,28).
doAt(endflow,30).
doAt(a21,32).
doAt(a22,33).
doAt(a7,34).
doAt(a16,35).
doAt(endflow,36).
doAt(a23,38).
doAt(a8,39).
doAt(a10,40).
doAt(endflow,41).
doAt(a1,43).
doAt(endflow,44).
doAt(endflow,46).
doAt(a12,48).
doAt(a13,49).
doAt(a3,50).
doAt(a24,51).
doAt(a15,52).
doAt(a18,53).
doAt(a9,54).
doAt(a17,55).
doAt(a14,56).
doAt(a7,57).
doAt(a16,58).
doAt(endflow,59).
doAt(a23,61).
doAt(a8,62).
doAt(a10,63).
doAt(endflow,64).
doAt(a1,66).
doAt(endflow,67).
doAt(endflow,69).
doAt(a21,71).
doAt(a22,72).
doAt(a7,73).
doAt(a16,74).
doAt(endflow,75).
doAt(a23,77).
doAt(a8,78).
doAt(a10,79).
doAt(endflow,80).
doAt(a1,82).
doAt(endflow,83).
doAt(endflow,85).
subsAt(a25,4).
leftrightnexts(24,27).
leftrightnexts(23,30).
leftrightnexts(19,22).
leftrightnexts(40,43).
leftrightnexts(39,46).
leftrightnexts(35,38).
leftrightnexts(17,32).
leftrightnexts(63,66).
leftrightnexts(62,69).
leftrightnexts(58,61).
leftrightnexts(79,82).
leftrightnexts(78,85).
leftrightnexts(74,77).
leftrightnexts(56,71).
leftrightnexts(10,48).