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(10,15).
next(15,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(16,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(22,28).
next(28,29).
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(8,38).
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(38,47).
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(55,56).
next(56,57).
next(57,58).
next(58,59).
doAt(startflow,6).
doAt(a20,8).
doAt(a7,9).
doAt(a17,10).
doAt(a18,12).
doAt(endflow,13).
doAt(a21,15).
doAt(a14,16).
doAt(a5,17).
doAt(endflow,20).
doAt(a15,22).
doAt(a23,23).
doAt(endflow,26).
doAt(a25,28).
doAt(a9,30).
doAt(a16,31).
doAt(a11,32).
doAt(a6,33).
doAt(a22,34).
doAt(endflow,36).
doAt(a19,38).
doAt(a24,40).
doAt(endflow,45).
doAt(a4,48).
doAt(a12,49).
doAt(a1,50).
doAt(a3,51).
doAt(a2,52).
doAt(a8,53).
doAt(a13,54).
doAt(endflow,58).
compAt(a18,x20,7).
compAt(a18,x10,11).
compAt(a18,x16,18).
compAt(a18,x24,19).
compAt(a18,x16,24).
compAt(a18,x24,25).
compAt(a18,x24,29).
compAt(a18,x16,35).
compAt(a7,x12,39).
compAt(a18,x16,41).
compAt(a7,x16,42).
compAt(a18,x10,43).
compAt(a18,x24,44).
compAt(a7,x12,47).
compAt(a18,x16,55).
compAt(a7,x16,56).
compAt(a18,x10,57).
leftrightnexts(23,28).
leftrightnexts(17,22).
leftrightnexts(11,15).
leftrightnexts(39,47).
leftrightnexts(9,38).