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(13,17).
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(17,27).
next(27,28).
next(28,29).
next(9,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
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(39,43).
next(43,44).
next(44,45).
next(45,46).
next(46,47).
next(44,48).
next(48,49).
next(49,50).
next(50,51).
next(51,52).
next(43,53).
next(53,54).
next(54,55).
next(34,56).
next(56,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(62,63).
next(60,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(65,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
next(64,74).
next(74,75).
next(75,76).
doAt(startflow,4).
doAt(a8,7).
doAt(a4,8).
doAt(a13,9).
doAt(a24,10).
doAt(a21,11).
doAt(a19,12).
doAt(a23,13).
doAt(a17,14).
doAt(endflow,15).
doAt(a3,17).
doAt(a14,18).
doAt(a5,19).
doAt(endflow,20).
doAt(a9,22).
doAt(a10,23).
doAt(a11,24).
doAt(endflow,25).
doAt(a12,27).
doAt(endflow,28).
doAt(a15,30).
doAt(a18,31).
doAt(a7,32).
doAt(a20,33).
doAt(a1,34).
doAt(a6,35).
doAt(a22,36).
doAt(a25,37).
doAt(a19,38).
doAt(a23,39).
doAt(a17,40).
doAt(endflow,41).
doAt(a3,43).
doAt(a14,44).
doAt(a5,45).
doAt(endflow,46).
doAt(a9,48).
doAt(a10,49).
doAt(a11,50).
doAt(endflow,51).
doAt(a12,53).
doAt(endflow,54).
doAt(a16,56).
doAt(a22,57).
doAt(a25,58).
doAt(a19,59).
doAt(a23,60).
doAt(a17,61).
doAt(endflow,62).
doAt(a3,64).
doAt(a14,65).
doAt(a5,66).
doAt(endflow,67).
doAt(a9,69).
doAt(a10,70).
doAt(a11,71).
doAt(endflow,72).
doAt(a12,74).
doAt(endflow,75).
compAt(a8,x15,5).
compAt(a8,x16,6).
leftrightnexts(19,22).
leftrightnexts(18,27).
leftrightnexts(14,17).
leftrightnexts(45,48).
leftrightnexts(44,53).
leftrightnexts(40,43).
leftrightnexts(66,69).
leftrightnexts(65,74).
leftrightnexts(61,64).
leftrightnexts(35,56).
leftrightnexts(10,30).