next(1,2).
next(2,3).
next(3,4).
next(4,5).
next(5,6).
next(6,7).
next(7,8).
next(5,9).
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(16,21).
next(21,22).
next(22,23).
next(23,24).
next(24,25).
next(21,26).
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(34,35).
next(13,36).
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(41,46).
next(46,47).
next(47,48).
next(48,49).
next(49,50).
next(46,51).
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).
doAt(startflow,4).
doAt(a9,5).
doAt(a5,6).
doAt(endflow,7).
doAt(a12,9).
doAt(a19,10).
doAt(a1,11).
doAt(a14,12).
doAt(a20,13).
doAt(a16,14).
doAt(a17,15).
doAt(a11,16).
doAt(a15,17).
doAt(endflow,19).
doAt(a18,21).
doAt(a23,22).
doAt(endflow,24).
doAt(a21,26).
doAt(a6,27).
doAt(a8,28).
doAt(a4,29).
doAt(a25,30).
doAt(a24,31).
doAt(a3,32).
doAt(endflow,34).
doAt(a2,36).
doAt(a7,37).
doAt(a13,38).
doAt(a22,39).
doAt(a17,40).
doAt(a11,41).
doAt(a15,42).
doAt(endflow,44).
doAt(a18,46).
doAt(a23,47).
doAt(endflow,49).
doAt(a21,51).
doAt(a6,52).
doAt(a8,53).
doAt(a4,54).
doAt(a25,55).
doAt(a24,56).
doAt(a3,57).
doAt(endflow,59).
compAt(a5,x12,18).
compAt(a5,x12,23).
compAt(a5,x12,33).
compAt(a5,x12,43).
compAt(a5,x12,48).
compAt(a5,x12,58).
leftrightnexts(22,26).
leftrightnexts(17,21).
leftrightnexts(47,51).
leftrightnexts(42,46).
leftrightnexts(14,36).
leftrightnexts(6,9).