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(9,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(27,31).
next(31,32).
next(32,33).
next(22,34).
next(34,35).
next(35,36).
next(36,37).
next(37,38).
next(38,39).
next(39,40).
next(40,41).
next(41,42).
next(42,43).
next(43,44).
next(44,45).
next(45,46).
next(43,47).
next(47,48).
next(48,49).
next(38,50).
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(60,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(64,68).
next(68,69).
next(69,70).
next(54,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
next(76,77).
next(77,78).
next(78,79).
next(79,80).
next(80,81).
next(81,82).
next(82,83).
next(83,84).
next(84,85).
next(82,86).
next(86,87).
next(87,88).
next(72,89).
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(92,109).
next(109,110).
next(110,111).
next(111,112).
next(112,113).
next(113,114).
next(114,115).
next(115,116).
next(116,117).
next(117,118).
next(118,119).
next(119,120).
next(120,121).
next(121,122).
next(122,123).
next(123,124).
next(124,125).
next(122,126).
next(126,127).
next(127,128).
doAt(startflow,4).
doAt(a15,5).
doAt(a2,7).
doAt(a17,8).
doAt(a16,9).
doAt(a7,10).
doAt(a25,11).
doAt(a24,12).
doAt(a35,13).
doAt(a28,14).
doAt(a39,15).
doAt(a19,16).
doAt(endflow,17).
doAt(a14,19).
doAt(endflow,20).
doAt(a31,22).
doAt(a29,23).
doAt(a24,24).
doAt(a35,25).
doAt(a28,26).
doAt(a39,27).
doAt(a19,28).
doAt(endflow,29).
doAt(a14,31).
doAt(endflow,32).
doAt(a27,34).
doAt(a37,35).
doAt(a10,36).
doAt(a11,37).
doAt(a23,38).
doAt(a41,39).
doAt(a24,40).
doAt(a35,41).
doAt(a28,42).
doAt(a39,43).
doAt(a19,44).
doAt(endflow,45).
doAt(a14,47).
doAt(endflow,48).
doAt(a6,50).
doAt(a5,51).
doAt(a42,52).
doAt(a40,53).
doAt(a45,54).
doAt(a33,55).
doAt(a4,56).
doAt(a32,57).
doAt(a26,58).
doAt(a38,59).
doAt(a3,60).
doAt(a24,61).
doAt(a35,62).
doAt(a28,63).
doAt(a39,64).
doAt(a19,65).
doAt(endflow,66).
doAt(a14,68).
doAt(endflow,69).
doAt(a9,71).
doAt(a34,72).
doAt(a21,73).
doAt(a4,74).
doAt(a32,75).
doAt(a26,76).
doAt(a38,77).
doAt(a3,78).
doAt(a24,79).
doAt(a35,80).
doAt(a28,81).
doAt(a39,82).
doAt(a19,83).
doAt(endflow,84).
doAt(a14,86).
doAt(endflow,87).
doAt(a1,89).
doAt(a20,90).
doAt(a30,91).
doAt(a13,92).
doAt(a12,93).
doAt(a4,94).
doAt(a32,95).
doAt(a26,96).
doAt(a38,97).
doAt(a3,98).
doAt(a24,99).
doAt(a35,100).
doAt(a28,101).
doAt(a39,102).
doAt(a19,103).
doAt(endflow,104).
doAt(a14,106).
doAt(endflow,107).
doAt(a18,109).
doAt(a44,110).
doAt(a43,111).
doAt(a36,112).
doAt(a22,113).
doAt(a4,114).
doAt(a32,115).
doAt(a26,116).
doAt(a38,117).
doAt(a3,118).
doAt(a24,119).
doAt(a35,120).
doAt(a28,121).
doAt(a39,122).
doAt(a19,123).
doAt(endflow,124).
doAt(a14,126).
doAt(endflow,127).
subsAt(a2,6).
leftrightnexts(16,19).
leftrightnexts(28,31).
leftrightnexts(44,47).
leftrightnexts(65,68).
leftrightnexts(83,86).
leftrightnexts(103,106).
leftrightnexts(123,126).
leftrightnexts(93,109).
leftrightnexts(73,89).
leftrightnexts(55,71).
leftrightnexts(39,50).
leftrightnexts(23,34).
leftrightnexts(10,22).