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(14,18).
next(18,19).
next(19,20).
next(20,21).
next(21,22).
next(22,23).
next(23,24).
next(21,25).
next(25,26).
next(26,27).
next(27,28).
next(28,29).
next(29,30).
next(7,31).
next(31,32).
next(32,33).
next(33,34).
next(34,35).
next(35,36).
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(41,45).
next(45,46).
next(46,47).
next(47,48).
next(45,49).
next(49,50).
next(50,51).
next(51,52).
next(52,53).
next(53,54).
next(54,55).
next(52,56).
next(56,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
doAt(startflow,5).
doAt(a9,6).
doAt(a23,7).
doAt(a25,9).
doAt(a22,10).
doAt(a13,11).
doAt(endflow,12).
doAt(a21,14).
doAt(a2,15).
doAt(endflow,16).
doAt(a5,18).
doAt(a15,19).
doAt(a14,20).
doAt(a11,21).
doAt(a19,22).
doAt(endflow,23).
doAt(a20,25).
doAt(a7,26).
doAt(a1,27).
doAt(a8,28).
doAt(endflow,29).
doAt(a18,32).
doAt(a6,33).
doAt(a4,35).
doAt(a12,36).
doAt(a16,37).
doAt(a24,38).
doAt(a17,39).
doAt(a10,40).
doAt(a22,41).
doAt(a13,42).
doAt(endflow,43).
doAt(a21,45).
doAt(a2,46).
doAt(endflow,47).
doAt(a5,49).
doAt(a15,50).
doAt(a14,51).
doAt(a11,52).
doAt(a19,53).
doAt(endflow,54).
doAt(a20,56).
doAt(a7,57).
doAt(a1,58).
doAt(a8,59).
doAt(endflow,60).
compAt(a25,x20,31).
compAt(a25,x6,34).
subsAt(a25,8).
leftrightnexts(22,25).
leftrightnexts(15,18).
leftrightnexts(11,14).
leftrightnexts(53,56).
leftrightnexts(46,49).
leftrightnexts(42,45).
leftrightnexts(8,31).