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(18,19).
next(10,20).
next(20,21).
next(21,22).
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(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(30,40).
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(41,50).
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(52,61).
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(61,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
next(76,77).
doAt(startflow,7).
doAt(a6,10).
doAt(a21,12).
doAt(a23,14).
doAt(a15,15).
doAt(a20,17).
doAt(endflow,18).
doAt(a1,21).
doAt(a19,24).
doAt(a8,26).
doAt(a13,27).
doAt(a17,28).
doAt(a3,29).
doAt(a11,30).
doAt(a9,32).
doAt(a25,33).
doAt(a23,34).
doAt(a15,35).
doAt(a20,37).
doAt(endflow,38).
doAt(a12,40).
doAt(a24,41).
doAt(a2,42).
doAt(a25,43).
doAt(a23,44).
doAt(a15,45).
doAt(a20,47).
doAt(endflow,48).
doAt(a4,50).
doAt(a18,51).
doAt(a16,52).
doAt(a7,53).
doAt(a25,54).
doAt(a23,55).
doAt(a15,56).
doAt(a20,58).
doAt(endflow,59).
doAt(a14,61).
doAt(a10,62).
doAt(a25,63).
doAt(a23,64).
doAt(a15,65).
doAt(a20,67).
doAt(endflow,68).
doAt(a22,70).
doAt(a25,71).
doAt(a23,72).
doAt(a15,73).
doAt(a20,75).
doAt(endflow,76).
compAt(a23,x6,8).
compAt(a21,x6,9).
compAt(a21,x24,11).
compAt(a23,x3,13).
compAt(a23,x3,20).
compAt(a20,x1,22).
compAt(a20,x22,23).
compAt(a15,x17,25).
compAt(a23,x11,31).
subsAt(a20,16).
subsAt(a20,36).
subsAt(a20,46).
subsAt(a20,57).
subsAt(a20,66).
subsAt(a20,74).
leftrightnexts(62,70).
leftrightnexts(53,61).
leftrightnexts(42,50).
leftrightnexts(31,40).
leftrightnexts(11,20).