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(9,13).
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(18,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(27,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
next(36,37).
next(37,38).
next(17,39).
next(39,40).
next(40,41).
next(41,42).
next(13,43).
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(48,53).
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(63,64).
next(64,65).
next(65,66).
next(66,67).
next(67,68).
next(47,69).
next(69,70).
next(70,71).
next(71,72).
doAt(startflow,5).
doAt(a7,7).
doAt(a6,9).
doAt(a24,10).
doAt(endflow,11).
doAt(a2,13).
doAt(a19,14).
doAt(a12,15).
doAt(a15,16).
doAt(a5,17).
doAt(a23,18).
doAt(a18,19).
doAt(endflow,21).
doAt(a21,23).
doAt(a10,24).
doAt(a1,25).
doAt(a9,26).
doAt(a11,27).
doAt(a22,28).
doAt(endflow,29).
doAt(a8,31).
doAt(a16,32).
doAt(a17,33).
doAt(a4,34).
doAt(a3,36).
doAt(endflow,37).
doAt(a13,39).
doAt(endflow,41).
doAt(a25,43).
doAt(a14,44).
doAt(a12,45).
doAt(a15,46).
doAt(a5,47).
doAt(a23,48).
doAt(a18,49).
doAt(endflow,51).
doAt(a21,53).
doAt(a10,54).
doAt(a1,55).
doAt(a9,56).
doAt(a11,57).
doAt(a22,58).
doAt(endflow,59).
doAt(a8,61).
doAt(a16,62).
doAt(a17,63).
doAt(a4,64).
doAt(a3,66).
doAt(endflow,67).
doAt(a13,69).
doAt(endflow,71).
compAt(a24,x14,6).
compAt(a24,x18,8).
compAt(a24,x13,20).
compAt(a24,x13,35).
compAt(a24,x13,40).
compAt(a24,x13,50).
compAt(a24,x13,65).
compAt(a24,x13,70).
leftrightnexts(28,31).
leftrightnexts(19,23).
leftrightnexts(18,39).
leftrightnexts(58,61).
leftrightnexts(49,53).
leftrightnexts(48,69).
leftrightnexts(14,43).
leftrightnexts(10,13).