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(20,24).
next(24,25).
next(25,26).
next(19,27).
next(27,28).
next(7,29).
next(29,30).
next(30,31).
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(44,45).
next(45,46).
next(46,47).
next(47,48).
next(48,49).
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(50,59).
next(59,60).
next(60,61).
doAt(startflow,6).
doAt(a4,7).
doAt(a8,9).
doAt(a11,12).
doAt(a10,13).
doAt(a18,14).
doAt(a24,15).
doAt(a21,16).
doAt(a17,17).
doAt(a3,18).
doAt(a9,19).
doAt(a5,20).
doAt(a25,21).
doAt(endflow,22).
doAt(a23,24).
doAt(endflow,25).
doAt(endflow,27).
doAt(a16,31).
doAt(a12,32).
doAt(a6,33).
doAt(a7,34).
doAt(a1,37).
doAt(a13,38).
doAt(a14,39).
doAt(a15,40).
doAt(a20,41).
doAt(a22,42).
doAt(a19,43).
doAt(a10,44).
doAt(a18,45).
doAt(a24,46).
doAt(a21,47).
doAt(a17,48).
doAt(a3,49).
doAt(a9,50).
doAt(a5,52).
doAt(a25,53).
doAt(endflow,54).
doAt(a23,56).
doAt(endflow,57).
doAt(endflow,60).
compAt(a11,x13,8).
compAt(a10,x6,11).
compAt(a10,x6,29).
compAt(a8,x6,30).
compAt(a8,x9,35).
compAt(a11,x16,36).
compAt(a11,x13,51).
compAt(a11,x13,59).
subsAt(a11,10).
leftrightnexts(21,24).
leftrightnexts(20,27).
leftrightnexts(53,56).
leftrightnexts(51,59).
leftrightnexts(8,29).