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(26,27).
next(27,28).
next(28,29).
next(29,30).
next(19,31).
next(31,32).
next(32,33).
next(33,34).
next(31,35).
next(35,36).
next(36,37).
next(15,38).
next(38,39).
next(39,40).
next(40,41).
next(41,42).
next(42,43).
next(43,44).
next(44,45).
next(42,46).
next(46,47).
next(47,48).
next(48,49).
next(49,50).
next(50,51).
next(51,52).
next(41,53).
next(53,54).
next(54,55).
next(55,56).
next(53,57).
next(57,58).
next(58,59).
doAt(startflow,3).
doAt(a22,7).
doAt(a9,8).
doAt(a7,9).
doAt(a5,10).
doAt(a25,11).
doAt(a13,12).
doAt(a17,13).
doAt(a14,14).
doAt(a24,15).
doAt(a23,16).
doAt(a16,17).
doAt(a4,18).
doAt(a19,19).
doAt(a18,20).
doAt(a6,21).
doAt(endflow,22).
doAt(a20,24).
doAt(a1,25).
doAt(a21,26).
doAt(a2,27).
doAt(a8,28).
doAt(endflow,29).
doAt(a10,31).
doAt(a3,32).
doAt(endflow,33).
doAt(a11,35).
doAt(endflow,36).
doAt(a15,38).
doAt(a16,39).
doAt(a4,40).
doAt(a19,41).
doAt(a18,42).
doAt(a6,43).
doAt(endflow,44).
doAt(a20,46).
doAt(a1,47).
doAt(a21,48).
doAt(a2,49).
doAt(a8,50).
doAt(endflow,51).
doAt(a10,53).
doAt(a3,54).
doAt(endflow,55).
doAt(a11,57).
doAt(endflow,58).
compAt(a22,x8,4).
compAt(a22,x10,5).
compAt(a22,x19,6).
leftrightnexts(21,24).
leftrightnexts(32,35).
leftrightnexts(20,31).
leftrightnexts(43,46).
leftrightnexts(54,57).
leftrightnexts(42,53).
leftrightnexts(16,38).