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(16,20).
next(20,21).
next(21,22).
next(22,23).
next(23,24).
next(24,25).
next(25,26).
next(26,27).
next(21,28).
next(28,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(33,34).
next(15,35).
next(35,36).
next(14,37).
next(37,38).
next(10,39).
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(48,52).
next(52,53).
next(53,54).
next(54,55).
next(55,56).
next(56,57).
next(57,58).
next(58,59).
next(53,60).
next(60,61).
next(61,62).
next(62,63).
next(63,64).
next(64,65).
next(65,66).
next(47,67).
next(67,68).
next(46,69).
next(69,70).
doAt(startflow,4).
doAt(a19,6).
doAt(a25,8).
doAt(a22,9).
doAt(a2,10).
doAt(a20,11).
doAt(a10,12).
doAt(a21,13).
doAt(a14,14).
doAt(a15,15).
doAt(a5,16).
doAt(a4,17).
doAt(endflow,18).
doAt(a17,20).
doAt(a13,21).
doAt(a23,22).
doAt(a11,23).
doAt(a1,24).
doAt(a18,25).
doAt(endflow,26).
doAt(a3,28).
doAt(a16,29).
doAt(a11,30).
doAt(a1,31).
doAt(a18,32).
doAt(endflow,33).
doAt(endflow,35).
doAt(endflow,37).
doAt(a8,39).
doAt(a6,40).
doAt(a12,41).
doAt(a9,42).
doAt(a7,43).
doAt(a10,44).
doAt(a21,45).
doAt(a14,46).
doAt(a15,47).
doAt(a5,48).
doAt(a4,49).
doAt(endflow,50).
doAt(a17,52).
doAt(a13,53).
doAt(a23,54).
doAt(a11,55).
doAt(a1,56).
doAt(a18,57).
doAt(endflow,58).
doAt(a3,60).
doAt(a16,61).
doAt(a11,62).
doAt(a1,63).
doAt(a18,64).
doAt(endflow,65).
doAt(endflow,67).
doAt(endflow,69).
compAt(a25,x17,5).
subsAt(a25,7).
leftrightnexts(22,28).
leftrightnexts(17,20).
leftrightnexts(16,35).
leftrightnexts(15,37).
leftrightnexts(54,60).
leftrightnexts(49,52).
leftrightnexts(48,67).
leftrightnexts(47,69).
leftrightnexts(11,39).