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(10,14).
next(14,15).
next(15,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(17,21).
next(21,22).
next(22,23).
next(23,24).
next(6,25).
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(34,39).
next(39,40).
next(40,41).
next(41,42).
next(42,43).
next(43,44).
next(44,45).
next(45,46).
next(42,47).
next(47,48).
next(48,49).
next(49,50).
next(50,51).
next(28,52).
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(60,61).
next(61,62).
next(62,63).
next(63,64).
next(60,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
next(71,72).
next(68,73).
next(73,74).
next(74,75).
next(75,76).
next(76,77).
doAt(startflow,4).
doAt(a4,6).
doAt(a18,8).
doAt(a1,9).
doAt(a8,10).
doAt(a12,11).
doAt(endflow,12).
doAt(a7,14).
doAt(a19,15).
doAt(a22,16).
doAt(a25,17).
doAt(a2,18).
doAt(endflow,19).
doAt(a13,21).
doAt(a11,22).
doAt(endflow,23).
doAt(a6,25).
doAt(a21,26).
doAt(a5,27).
doAt(a10,28).
doAt(a23,29).
doAt(a24,30).
doAt(a20,32).
doAt(a1,33).
doAt(a8,34).
doAt(a12,35).
doAt(endflow,37).
doAt(a7,39).
doAt(a19,40).
doAt(a22,41).
doAt(a25,42).
doAt(a2,43).
doAt(endflow,45).
doAt(a13,47).
doAt(a11,48).
doAt(endflow,50).
doAt(a3,52).
doAt(a15,53).
doAt(a16,54).
doAt(a17,55).
doAt(a9,56).
doAt(a24,57).
doAt(a20,58).
doAt(a1,59).
doAt(a8,60).
doAt(a12,61).
doAt(endflow,63).
doAt(a7,65).
doAt(a19,66).
doAt(a22,67).
doAt(a25,68).
doAt(a2,69).
doAt(endflow,71).
doAt(a13,73).
doAt(a11,74).
doAt(endflow,76).
compAt(a18,x15,5).
compAt(a18,x16,31).
compAt(a18,x2,36).
compAt(a18,x2,44).
compAt(a18,x2,49).
compAt(a18,x2,62).
compAt(a18,x2,70).
compAt(a18,x2,75).
subsAt(a18,7).
leftrightnexts(18,21).
leftrightnexts(11,14).
leftrightnexts(43,47).
leftrightnexts(35,39).
leftrightnexts(69,73).
leftrightnexts(61,65).
leftrightnexts(29,52).
leftrightnexts(7,25).