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(23,24).
next(24,25).
next(22,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(30,31).
next(27,32).
next(32,33).
next(33,34).
next(34,35).
next(14,36).
next(36,37).
next(37,38).
next(38,39).
next(39,40).
next(40,41).
next(41,42).
next(42,43).
next(43,44).
next(44,45).
next(45,46).
next(43,47).
next(47,48).
next(48,49).
next(49,50).
next(50,51).
next(51,52).
next(48,53).
next(53,54).
next(54,55).
next(55,56).
next(36,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(65,69).
next(69,70).
next(70,71).
next(71,72).
next(72,73).
next(73,74).
next(70,75).
next(75,76).
next(76,77).
next(77,78).
doAt(startflow,6).
doAt(a3,8).
doAt(a13,11).
doAt(a4,12).
doAt(a15,13).
doAt(a20,14).
doAt(a6,15).
doAt(a7,16).
doAt(a21,17).
doAt(a17,18).
doAt(a19,19).
doAt(a24,20).
doAt(a16,21).
doAt(a9,22).
doAt(a8,23).
doAt(endflow,24).
doAt(a18,26).
doAt(a14,27).
doAt(a2,28).
doAt(a10,29).
doAt(endflow,30).
doAt(a11,32).
doAt(a10,33).
doAt(endflow,34).
doAt(a23,36).
doAt(a12,37).
doAt(a21,38).
doAt(a17,39).
doAt(a19,40).
doAt(a24,41).
doAt(a16,42).
doAt(a9,43).
doAt(a8,44).
doAt(endflow,45).
doAt(a18,47).
doAt(a14,48).
doAt(a2,49).
doAt(a10,50).
doAt(endflow,51).
doAt(a11,53).
doAt(a10,54).
doAt(endflow,55).
doAt(a1,57).
doAt(a25,58).
doAt(a22,59).
doAt(a21,60).
doAt(a17,61).
doAt(a19,62).
doAt(a24,63).
doAt(a16,64).
doAt(a9,65).
doAt(a8,66).
doAt(endflow,67).
doAt(a18,69).
doAt(a14,70).
doAt(a2,71).
doAt(a10,72).
doAt(endflow,73).
doAt(a11,75).
doAt(a10,76).
doAt(endflow,77).
compAt(a4,x15,7).
compAt(a15,x18,10).
subsAt(a13,9).
leftrightnexts(28,32).
leftrightnexts(23,26).
leftrightnexts(49,53).
leftrightnexts(44,47).
leftrightnexts(71,75).
leftrightnexts(66,69).
leftrightnexts(37,57).
leftrightnexts(15,36).