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(11,19).
next(19,20).
next(20,21).
next(21,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(20,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(10,35).
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(40,52).
next(52,53).
next(53,54).
next(54,55).
next(55,56).
next(56,57).
next(57,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
doAt(startflow,7).
doAt(a22,8).
doAt(a11,10).
doAt(a3,11).
doAt(a12,14).
doAt(a25,16).
doAt(endflow,17).
doAt(a8,20).
doAt(a7,22).
doAt(a25,24).
doAt(endflow,27).
doAt(a2,29).
doAt(a25,31).
doAt(endflow,33).
doAt(a4,36).
doAt(a13,37).
doAt(a20,38).
doAt(a24,39).
doAt(a15,40).
doAt(a6,41).
doAt(a17,43).
doAt(a1,44).
doAt(a25,46).
doAt(endflow,50).
doAt(a23,53).
doAt(a16,54).
doAt(a18,55).
doAt(a5,56).
doAt(a21,57).
doAt(a19,58).
doAt(a9,59).
doAt(a14,60).
doAt(a17,62).
doAt(a1,63).
doAt(a25,65).
doAt(endflow,66).
compAt(a12,x4,9).
compAt(a12,x6,13).
compAt(a12,x6,19).
compAt(a25,x25,21).
compAt(a12,x19,25).
compAt(a12,x22,26).
compAt(a12,x19,32).
compAt(a25,x23,35).
compAt(a25,x25,42).
compAt(a12,x6,47).
compAt(a12,x19,48).
compAt(a12,x22,49).
compAt(a12,x22,52).
compAt(a25,x25,61).
subsAt(a12,12).
subsAt(a25,15).
subsAt(a25,23).
subsAt(a25,30).
subsAt(a25,45).
subsAt(a25,64).
leftrightnexts(21,29).
leftrightnexts(12,19).
leftrightnexts(41,52).
leftrightnexts(11,35).