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(22,23).
next(20,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(24,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(30,36).
next(36,37).
next(37,38).
next(38,39).
next(39,40).
next(40,41).
next(10,42).
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(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(62,63).
next(59,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(65,71).
next(71,72).
next(72,73).
next(73,74).
next(74,75).
next(75,76).
doAt(startflow,6).
doAt(a23,9).
doAt(a6,10).
doAt(a16,11).
doAt(a25,13).
doAt(a20,14).
doAt(a18,15).
doAt(a2,16).
doAt(a24,17).
doAt(a19,18).
doAt(a22,19).
doAt(a1,20).
doAt(a3,21).
doAt(endflow,22).
doAt(a7,24).
doAt(a17,25).
doAt(a12,26).
doAt(endflow,27).
doAt(a10,29).
doAt(a15,30).
doAt(a14,31).
doAt(a11,32).
doAt(a12,33).
doAt(endflow,34).
doAt(a5,36).
doAt(a9,37).
doAt(a11,38).
doAt(a12,39).
doAt(endflow,40).
doAt(a21,42).
doAt(a13,44).
doAt(a8,45).
doAt(a25,47).
doAt(a20,49).
doAt(a18,50).
doAt(a2,51).
doAt(a24,52).
doAt(a19,53).
doAt(a22,54).
doAt(a1,55).
doAt(a3,56).
doAt(endflow,57).
doAt(a7,59).
doAt(a17,60).
doAt(a12,61).
doAt(endflow,62).
doAt(a10,64).
doAt(a15,65).
doAt(a14,66).
doAt(a11,67).
doAt(a12,68).
doAt(endflow,69).
doAt(a5,71).
doAt(a9,72).
doAt(a11,73).
doAt(a12,74).
doAt(endflow,75).
compAt(a25,x23,8).
compAt(a25,x5,43).
compAt(a16,x7,48).
subsAt(a23,7).
subsAt(a25,12).
subsAt(a25,46).
leftrightnexts(31,36).
leftrightnexts(25,29).
leftrightnexts(21,24).
leftrightnexts(66,71).
leftrightnexts(60,64).
leftrightnexts(56,59).
leftrightnexts(11,42).