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(25,26).
next(26,27).
next(24,28).
next(28,29).
next(29,30).
next(30,31).
next(31,32).
next(29,33).
next(33,34).
next(34,35).
next(16,36).
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(48,52).
next(52,53).
next(53,54).
next(15,55).
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(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(70,74).
next(74,75).
next(75,76).
doAt(startflow,7).
doAt(a23,8).
doAt(a11,10).
doAt(a12,12).
doAt(a1,14).
doAt(a25,15).
doAt(a19,16).
doAt(a24,17).
doAt(a18,18).
doAt(a4,19).
doAt(a13,20).
doAt(a21,21).
doAt(a9,22).
doAt(a7,23).
doAt(a8,24).
doAt(a2,25).
doAt(endflow,26).
doAt(a3,28).
doAt(a15,29).
doAt(a5,30).
doAt(endflow,31).
doAt(a20,33).
doAt(endflow,34).
doAt(a6,36).
doAt(a18,37).
doAt(a4,38).
doAt(a13,39).
doAt(a21,40).
doAt(a9,41).
doAt(a7,42).
doAt(a8,43).
doAt(a2,44).
doAt(endflow,45).
doAt(a3,47).
doAt(a15,48).
doAt(a5,49).
doAt(endflow,50).
doAt(a20,52).
doAt(endflow,53).
doAt(a16,55).
doAt(a10,56).
doAt(a14,57).
doAt(a22,58).
doAt(a18,59).
doAt(a4,60).
doAt(a13,61).
doAt(a21,62).
doAt(a9,63).
doAt(a7,64).
doAt(a8,65).
doAt(a2,66).
doAt(endflow,67).
doAt(a3,69).
doAt(a15,70).
doAt(a5,71).
doAt(endflow,72).
doAt(a20,74).
doAt(endflow,75).
compAt(a1,x14,11).
subsAt(a11,9).
subsAt(a1,13).
leftrightnexts(30,33).
leftrightnexts(25,28).
leftrightnexts(49,52).
leftrightnexts(44,47).
leftrightnexts(17,36).
leftrightnexts(71,74).
leftrightnexts(66,69).
leftrightnexts(16,55).