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(19,20).
next(20,21).
next(21,22).
next(19,23).
next(23,24).
next(24,25).
next(25,26).
next(11,27).
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(33,38).
next(38,39).
next(39,40).
next(40,41).
next(41,42).
next(10,43).
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(51,52).
next(52,53).
next(53,54).
next(54,55).
next(55,56).
next(56,57).
next(57,58).
next(55,59).
next(59,60).
next(60,61).
next(61,62).
next(49,63).
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(72,73).
next(70,74).
next(74,75).
next(75,76).
next(76,77).
doAt(startflow,7).
doAt(a16,9).
doAt(a13,10).
doAt(a14,11).
doAt(a21,14).
doAt(a17,15).
doAt(a4,16).
doAt(a1,17).
doAt(a19,18).
doAt(a3,19).
doAt(a8,20).
doAt(endflow,21).
doAt(a2,23).
doAt(a22,24).
doAt(endflow,25).
doAt(a24,27).
doAt(a11,28).
doAt(a17,29).
doAt(a4,30).
doAt(a1,31).
doAt(a19,32).
doAt(a3,33).
doAt(a8,34).
doAt(endflow,36).
doAt(a2,38).
doAt(a22,39).
doAt(endflow,41).
doAt(a23,43).
doAt(a5,44).
doAt(a18,45).
doAt(a6,47).
doAt(a15,48).
doAt(a10,49).
doAt(a20,50).
doAt(a17,51).
doAt(a4,52).
doAt(a1,53).
doAt(a19,54).
doAt(a3,55).
doAt(a8,56).
doAt(endflow,57).
doAt(a2,59).
doAt(a22,60).
doAt(endflow,61).
doAt(a7,63).
doAt(a9,64).
doAt(a25,65).
doAt(a17,66).
doAt(a4,67).
doAt(a1,68).
doAt(a19,69).
doAt(a3,70).
doAt(a8,71).
doAt(endflow,72).
doAt(a2,74).
doAt(a22,75).
doAt(endflow,76).
compAt(a17,x5,8).
compAt(a21,x9,13).
compAt(a21,x9,35).
compAt(a21,x9,40).
compAt(a21,x9,46).
subsAt(a21,12).
leftrightnexts(20,23).
leftrightnexts(34,38).
leftrightnexts(12,27).
leftrightnexts(56,59).
leftrightnexts(71,74).
leftrightnexts(50,63).
leftrightnexts(11,43).