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(23,24).
next(24,25).
next(25,26).
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(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(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(55,65).
next(65,66).
next(66,67).
next(67,68).
next(68,69).
next(69,70).
next(70,71).
doAt(startflow,20).
doAt(a2,21).
doAt(a21,24).
doAt(a19,26).
doAt(a25,30).
doAt(a11,33).
doAt(a23,35).
doAt(a12,36).
doAt(a15,37).
doAt(a3,40).
doAt(a18,44).
doAt(a7,46).
doAt(a17,47).
doAt(a20,50).
doAt(a13,51).
doAt(a22,53).
doAt(a24,55).
doAt(a9,56).
doAt(a6,57).
doAt(a10,58).
doAt(a16,59).
doAt(a4,60).
doAt(a5,61).
doAt(a14,62).
doAt(endflow,63).
doAt(a8,65).
doAt(a4,66).
doAt(a5,67).
doAt(a14,69).
doAt(endflow,70).
compAt(a9,x7,23).
compAt(a11,x10,25).
compAt(a7,x17,27).
compAt(a18,x17,28).
compAt(a23,x17,29).
compAt(a3,x25,31).
compAt(a12,x25,32).
compAt(a20,x23,34).
compAt(a9,x16,39).
compAt(a22,x3,41).
compAt(a13,x3,42).
compAt(a18,x3,43).
compAt(a22,x3,48).
compAt(a13,x3,49).
compAt(a6,x14,54).
compAt(a9,x9,68).
subsAt(a21,22).
subsAt(a3,38).
subsAt(a7,45).
subsAt(a22,52).
leftrightnexts(56,65).