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(9,13).
next(13,14).
next(14,15).
next(6,16).
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(23,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(33,37).
next(37,38).
next(38,39).
next(17,40).
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(48,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(58,62).
next(62,63).
next(63,64).
next(42,65).
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(73,74).
next(74,75).
next(75,76).
next(76,77).
next(74,78).
next(78,79).
next(79,80).
next(72,81).
next(81,82).
next(82,83).
next(83,84).
next(84,85).
next(82,86).
next(86,87).
next(87,88).
doAt(startflow,3).
doAt(a11,5).
doAt(a19,6).
doAt(a17,7).
doAt(a1,8).
doAt(a6,9).
doAt(a13,10).
doAt(endflow,11).
doAt(a5,13).
doAt(endflow,14).
doAt(a9,16).
doAt(a3,17).
doAt(a12,18).
doAt(a14,19).
doAt(a21,20).
doAt(a2,21).
doAt(a18,22).
doAt(a25,23).
doAt(a20,24).
doAt(a6,25).
doAt(a13,26).
doAt(endflow,27).
doAt(a5,29).
doAt(endflow,30).
doAt(a15,32).
doAt(a6,33).
doAt(a13,34).
doAt(endflow,35).
doAt(a5,37).
doAt(endflow,38).
doAt(a10,40).
doAt(a4,41).
doAt(a23,42).
doAt(a22,43).
doAt(a14,44).
doAt(a21,45).
doAt(a2,46).
doAt(a18,47).
doAt(a25,48).
doAt(a20,49).
doAt(a6,50).
doAt(a13,51).
doAt(endflow,52).
doAt(a5,54).
doAt(endflow,55).
doAt(a15,57).
doAt(a6,58).
doAt(a13,59).
doAt(endflow,60).
doAt(a5,62).
doAt(endflow,63).
doAt(a7,65).
doAt(a8,66).
doAt(a16,67).
doAt(a14,68).
doAt(a21,69).
doAt(a2,70).
doAt(a18,71).
doAt(a25,72).
doAt(a20,73).
doAt(a6,74).
doAt(a13,75).
doAt(endflow,76).
doAt(a5,78).
doAt(endflow,79).
doAt(a15,81).
doAt(a6,82).
doAt(a13,83).
doAt(endflow,84).
doAt(a5,86).
doAt(endflow,87).
subsAt(a11,4).
leftrightnexts(10,13).
leftrightnexts(26,29).
leftrightnexts(34,37).
leftrightnexts(24,32).
leftrightnexts(51,54).
leftrightnexts(59,62).
leftrightnexts(49,57).
leftrightnexts(75,78).
leftrightnexts(83,86).
leftrightnexts(73,81).
leftrightnexts(43,65).
leftrightnexts(18,40).
leftrightnexts(7,16).