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(14,22).
next(22,23).
next(11,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(30,31).
next(31,32).
next(28,33).
next(33,34).
next(34,35).
next(35,36).
next(27,37).
next(37,38).
next(38,39).
next(10,40).
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(47,52).
next(52,53).
next(53,54).
next(54,55).
next(46,56).
next(56,57).
next(57,58).
next(44,59).
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(67,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(69,73).
next(73,74).
next(74,75).
next(68,76).
next(76,77).
doAt(startflow,7).
doAt(a9,8).
doAt(a15,10).
doAt(a2,11).
doAt(a20,13).
doAt(a21,14).
doAt(a25,15).
doAt(a19,16).
doAt(endflow,17).
doAt(a1,19).
doAt(endflow,20).
doAt(endflow,22).
doAt(a14,25).
doAt(a7,26).
doAt(a21,27).
doAt(a25,28).
doAt(a19,29).
doAt(endflow,31).
doAt(a1,33).
doAt(endflow,35).
doAt(endflow,38).
doAt(a12,40).
doAt(a24,41).
doAt(a5,42).
doAt(a6,44).
doAt(a8,45).
doAt(a21,46).
doAt(a25,47).
doAt(a19,48).
doAt(endflow,50).
doAt(a1,52).
doAt(endflow,54).
doAt(endflow,57).
doAt(a4,59).
doAt(a11,60).
doAt(a18,61).
doAt(a17,62).
doAt(a16,63).
doAt(a23,64).
doAt(a10,65).
doAt(a13,66).
doAt(a22,67).
doAt(a21,68).
doAt(a25,69).
doAt(a19,70).
doAt(endflow,71).
doAt(a1,73).
doAt(endflow,74).
doAt(endflow,76).
compAt(a20,x24,9).
compAt(a20,x3,12).
compAt(a20,x3,24).
compAt(a20,x23,30).
compAt(a20,x23,34).
compAt(a20,x23,37).
compAt(a20,x23,43).
compAt(a20,x3,49).
compAt(a20,x3,53).
compAt(a20,x3,56).
leftrightnexts(16,19).
leftrightnexts(15,22).
leftrightnexts(29,33).
leftrightnexts(28,37).
leftrightnexts(12,24).
leftrightnexts(48,52).
leftrightnexts(47,56).
leftrightnexts(70,73).
leftrightnexts(69,76).
leftrightnexts(45,59).
leftrightnexts(11,40).