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(9,14).
next(14,15).
next(15,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(21,22).
next(19,23).
next(23,24).
next(24,25).
next(25,26).
next(23,27).
next(27,28).
next(28,29).
next(29,30).
next(30,31).
next(31,32).
next(29,33).
next(33,34).
next(34,35).
next(35,36).
next(33,37).
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(46,47).
next(47,48).
next(45,49).
next(49,50).
next(50,51).
next(51,52).
next(52,53).
next(50,54).
next(54,55).
next(55,56).
next(56,57).
next(17,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(62,66).
next(66,67).
next(67,68).
next(68,69).
next(66,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(72,76).
next(76,77).
next(77,78).
next(78,79).
next(76,80).
next(80,81).
next(81,82).
next(82,83).
next(83,84).
next(84,85).
next(85,86).
next(86,87).
next(87,88).
next(88,89).
next(89,90).
next(90,91).
next(88,92).
next(92,93).
next(93,94).
next(94,95).
next(95,96).
next(93,97).
next(97,98).
next(98,99).
next(99,100).
next(60,101).
next(101,102).
next(102,103).
next(103,104).
next(104,105).
next(105,106).
next(106,107).
next(107,108).
next(108,109).
next(106,110).
next(110,111).
next(111,112).
next(112,113).
next(110,114).
next(114,115).
next(115,116).
next(116,117).
next(117,118).
next(118,119).
next(116,120).
next(120,121).
next(121,122).
next(122,123).
next(120,124).
next(124,125).
next(125,126).
next(126,127).
next(127,128).
next(128,129).
next(129,130).
next(130,131).
next(131,132).
next(132,133).
next(133,134).
next(134,135).
next(132,136).
next(136,137).
next(137,138).
next(138,139).
next(139,140).
next(137,141).
next(141,142).
next(142,143).
next(143,144).
doAt(startflow,5).
doAt(a16,6).
doAt(a14,8).
doAt(a38,9).
doAt(a21,10).
doAt(a25,11).
doAt(endflow,12).
doAt(a39,14).
doAt(a34,15).
doAt(a5,16).
doAt(a33,17).
doAt(a11,18).
doAt(a1,19).
doAt(a4,20).
doAt(endflow,21).
doAt(a41,23).
doAt(a10,24).
doAt(endflow,25).
doAt(a35,27).
doAt(a40,28).
doAt(a27,29).
doAt(a13,30).
doAt(endflow,31).
doAt(a15,33).
doAt(a31,34).
doAt(endflow,35).
doAt(a24,37).
doAt(a17,38).
doAt(a12,39).
doAt(a8,40).
doAt(a3,41).
doAt(a19,42).
doAt(a37,43).
doAt(a42,44).
doAt(a7,45).
doAt(a44,46).
doAt(endflow,47).
doAt(a43,49).
doAt(a32,50).
doAt(a22,51).
doAt(endflow,52).
doAt(a6,54).
doAt(a26,55).
doAt(endflow,56).
doAt(a36,58).
doAt(a18,59).
doAt(a9,60).
doAt(a2,61).
doAt(a1,62).
doAt(a4,63).
doAt(endflow,64).
doAt(a41,66).
doAt(a10,67).
doAt(endflow,68).
doAt(a35,70).
doAt(a40,71).
doAt(a27,72).
doAt(a13,73).
doAt(endflow,74).
doAt(a15,76).
doAt(a31,77).
doAt(endflow,78).
doAt(a24,80).
doAt(a17,81).
doAt(a12,82).
doAt(a8,83).
doAt(a3,84).
doAt(a19,85).
doAt(a37,86).
doAt(a42,87).
doAt(a7,88).
doAt(a44,89).
doAt(endflow,90).
doAt(a43,92).
doAt(a32,93).
doAt(a22,94).
doAt(endflow,95).
doAt(a6,97).
doAt(a26,98).
doAt(endflow,99).
doAt(a30,101).
doAt(a28,102).
doAt(a23,103).
doAt(a20,104).
doAt(a29,105).
doAt(a1,106).
doAt(a4,107).
doAt(endflow,108).
doAt(a41,110).
doAt(a10,111).
doAt(endflow,112).
doAt(a35,114).
doAt(a40,115).
doAt(a27,116).
doAt(a13,117).
doAt(endflow,118).
doAt(a15,120).
doAt(a31,121).
doAt(endflow,122).
doAt(a24,124).
doAt(a17,125).
doAt(a12,126).
doAt(a8,127).
doAt(a3,128).
doAt(a19,129).
doAt(a37,130).
doAt(a42,131).
doAt(a7,132).
doAt(a44,133).
doAt(endflow,134).
doAt(a43,136).
doAt(a32,137).
doAt(a22,138).
doAt(endflow,139).
doAt(a6,141).
doAt(a26,142).
doAt(endflow,143).
subsAt(a14,7).
leftrightnexts(51,54).
leftrightnexts(46,49).
leftrightnexts(34,37).
leftrightnexts(30,33).
leftrightnexts(24,27).
leftrightnexts(20,23).
leftrightnexts(94,97).
leftrightnexts(89,92).
leftrightnexts(77,80).
leftrightnexts(73,76).
leftrightnexts(67,70).
leftrightnexts(63,66).
leftrightnexts(138,141).
leftrightnexts(133,136).
leftrightnexts(121,124).
leftrightnexts(117,120).
leftrightnexts(111,114).
leftrightnexts(107,110).
leftrightnexts(61,101).
leftrightnexts(18,58).
leftrightnexts(10,14).