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(15,19).
next(19,20).
next(20,21).
next(11,22).
next(22,23).
next(23,24).
next(24,25).
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(31,35).
next(35,36).
next(36,37).
next(26,38).
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(25,50).
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(58,59).
next(59,60).
next(57,61).
next(61,62).
next(62,63).
next(52,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
next(68,72).
next(72,73).
next(73,74).
doAt(startflow,7).
doAt(a11,8).
doAt(a2,10).
doAt(a12,11).
doAt(a9,13).
doAt(a23,14).
doAt(a22,15).
doAt(a16,16).
doAt(endflow,17).
doAt(a1,19).
doAt(endflow,20).
doAt(a14,22).
doAt(a19,23).
doAt(a3,24).
doAt(a17,25).
doAt(a5,26).
doAt(a7,28).
doAt(a23,29).
doAt(a22,31).
doAt(a16,32).
doAt(endflow,33).
doAt(a1,35).
doAt(endflow,36).
doAt(a18,38).
doAt(a25,39).
doAt(a10,40).
doAt(a23,41).
doAt(a22,43).
doAt(a16,44).
doAt(endflow,45).
doAt(a1,47).
doAt(endflow,48).
doAt(a15,50).
doAt(a20,51).
doAt(a4,52).
doAt(a13,53).
doAt(a6,54).
doAt(a21,55).
doAt(a23,56).
doAt(a22,57).
doAt(a16,58).
doAt(endflow,59).
doAt(a1,61).
doAt(endflow,62).
doAt(a8,64).
doAt(a6,65).
doAt(a21,66).
doAt(a23,67).
doAt(a22,68).
doAt(a16,69).
doAt(endflow,70).
doAt(a1,72).
doAt(endflow,73).
compAt(a23,x10,27).
compAt(a9,x24,30).
compAt(a9,x24,42).
subsAt(a2,9).
subsAt(a9,12).
leftrightnexts(16,19).
leftrightnexts(32,35).
leftrightnexts(44,47).
leftrightnexts(27,38).
leftrightnexts(58,61).
leftrightnexts(69,72).
leftrightnexts(53,64).
leftrightnexts(26,50).
leftrightnexts(12,22).