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(6,13).
next(13,14).
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(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(23,28).
next(28,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(29,34).
next(34,35).
next(35,36).
next(36,37).
next(37,38).
next(20,39).
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(48,49).
next(45,50).
next(50,51).
next(51,52).
next(52,53).
next(53,54).
next(54,55).
next(51,56).
next(56,57).
next(57,58).
next(58,59).
next(59,60).
next(42,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(63,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
next(69,74).
next(74,75).
next(75,76).
next(76,77).
next(77,78).
doAt(startflow,5).
doAt(a17,6).
doAt(a4,8).
doAt(a9,10).
doAt(endflow,11).
doAt(a2,13).
doAt(a22,15).
doAt(a15,17).
doAt(a6,18).
doAt(a16,19).
doAt(a23,20).
doAt(a25,21).
doAt(a7,22).
doAt(a19,23).
doAt(a3,24).
doAt(endflow,26).
doAt(a20,28).
doAt(a21,29).
doAt(a5,30).
doAt(endflow,32).
doAt(a18,34).
doAt(a13,35).
doAt(endflow,37).
doAt(a14,39).
doAt(a24,40).
doAt(a8,41).
doAt(a11,42).
doAt(a10,43).
doAt(a7,44).
doAt(a19,45).
doAt(a3,46).
doAt(endflow,48).
doAt(a20,50).
doAt(a21,51).
doAt(a5,52).
doAt(endflow,54).
doAt(a18,56).
doAt(a13,57).
doAt(endflow,59).
doAt(a12,61).
doAt(a7,62).
doAt(a19,63).
doAt(a3,64).
doAt(endflow,66).
doAt(a20,68).
doAt(a21,69).
doAt(a5,70).
doAt(endflow,72).
doAt(a18,74).
doAt(a13,75).
doAt(endflow,77).
compAt(a9,x13,9).
compAt(a4,x17,14).
compAt(a9,x9,16).
compAt(a9,x23,25).
compAt(a9,x23,31).
compAt(a9,x23,36).
compAt(a9,x23,47).
compAt(a9,x23,53).
compAt(a9,x23,58).
compAt(a9,x23,65).
compAt(a9,x23,71).
compAt(a9,x23,76).
subsAt(a4,7).
leftrightnexts(30,34).
leftrightnexts(24,28).
leftrightnexts(52,56).
leftrightnexts(46,50).
leftrightnexts(70,74).
leftrightnexts(64,68).
leftrightnexts(43,61).
leftrightnexts(21,39).
leftrightnexts(7,13).