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(8,13).
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(26,27).
next(27,28).
next(28,29).
next(26,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(31,35).
next(35,36).
next(36,37).
next(37,38).
next(35,39).
next(39,40).
next(40,41).
next(30,42).
next(42,43).
next(24,44).
next(44,45).
next(45,46).
next(46,47).
next(47,48).
next(48,49).
next(49,50).
next(47,51).
next(51,52).
next(52,53).
next(53,54).
next(54,55).
next(52,56).
next(56,57).
next(57,58).
next(58,59).
next(56,60).
next(60,61).
next(61,62).
next(51,63).
next(63,64).
next(45,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(69,73).
next(73,74).
next(74,75).
next(75,76).
next(76,77).
next(74,78).
next(78,79).
next(79,80).
next(80,81).
next(78,82).
next(82,83).
next(83,84).
next(73,85).
next(85,86).
next(65,87).
next(87,88).
next(88,89).
next(89,90).
next(90,91).
next(91,92).
next(92,93).
next(93,94).
next(94,95).
next(95,96).
next(96,97).
next(97,98).
next(98,99).
next(99,100).
next(100,101).
next(101,102).
next(102,103).
next(103,104).
next(104,105).
next(102,106).
next(106,107).
next(107,108).
next(108,109).
next(109,110).
next(107,111).
next(111,112).
next(112,113).
next(113,114).
next(111,115).
next(115,116).
next(116,117).
next(106,118).
next(118,119).
doAt(startflow,5).
doAt(a42,6).
doAt(a40,7).
doAt(a10,8).
doAt(a11,9).
doAt(a41,10).
doAt(endflow,11).
doAt(a45,13).
doAt(a2,14).
doAt(a34,15).
doAt(a9,16).
doAt(a38,17).
doAt(a19,18).
doAt(a44,19).
doAt(endflow,20).
doAt(a32,22).
doAt(a30,23).
doAt(a28,24).
doAt(a21,25).
doAt(a16,26).
doAt(a27,27).
doAt(endflow,28).
doAt(a1,30).
doAt(a8,31).
doAt(a39,32).
doAt(endflow,33).
doAt(a13,35).
doAt(a24,36).
doAt(endflow,37).
doAt(a17,39).
doAt(endflow,40).
doAt(endflow,42).
doAt(a26,44).
doAt(a15,45).
doAt(a35,46).
doAt(a16,47).
doAt(a27,48).
doAt(endflow,49).
doAt(a1,51).
doAt(a8,52).
doAt(a39,53).
doAt(endflow,54).
doAt(a13,56).
doAt(a24,57).
doAt(endflow,58).
doAt(a17,60).
doAt(endflow,61).
doAt(endflow,63).
doAt(a12,65).
doAt(a25,66).
doAt(a3,67).
doAt(a4,68).
doAt(a16,69).
doAt(a27,70).
doAt(endflow,71).
doAt(a1,73).
doAt(a8,74).
doAt(a39,75).
doAt(endflow,76).
doAt(a13,78).
doAt(a24,79).
doAt(endflow,80).
doAt(a17,82).
doAt(endflow,83).
doAt(endflow,85).
doAt(a43,87).
doAt(a33,88).
doAt(a7,89).
doAt(a37,90).
doAt(a18,91).
doAt(a6,92).
doAt(a5,93).
doAt(a36,94).
doAt(a29,95).
doAt(a14,96).
doAt(a22,97).
doAt(a20,98).
doAt(a31,99).
doAt(a3,100).
doAt(a4,101).
doAt(a16,102).
doAt(a27,103).
doAt(endflow,104).
doAt(a1,106).
doAt(a8,107).
doAt(a39,108).
doAt(endflow,109).
doAt(a13,111).
doAt(a24,112).
doAt(endflow,113).
doAt(a17,115).
doAt(endflow,116).
doAt(endflow,118).
leftrightnexts(36,39).
leftrightnexts(32,35).
leftrightnexts(31,42).
leftrightnexts(27,30).
leftrightnexts(57,60).
leftrightnexts(53,56).
leftrightnexts(52,63).
leftrightnexts(48,51).
leftrightnexts(79,82).
leftrightnexts(75,78).
leftrightnexts(74,85).
leftrightnexts(70,73).
leftrightnexts(112,115).
leftrightnexts(108,111).
leftrightnexts(107,118).
leftrightnexts(103,106).
leftrightnexts(66,87).
leftrightnexts(46,65).
leftrightnexts(25,44).
leftrightnexts(19,22).
leftrightnexts(9,13).