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(11,15).
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(9,26).
next(26,27).
next(27,28).
next(28,29).
next(26,30).
next(30,31).
next(31,32).
next(32,33).
next(5,34).
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(42,47).
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(40,58).
next(58,59).
next(59,60).
next(60,61).
next(61,62).
next(58,63).
next(63,64).
next(64,65).
next(65,66).
next(66,67).
doAt(startflow,4).
doAt(a11,5).
doAt(a20,7).
doAt(a13,8).
doAt(a22,9).
doAt(a5,10).
doAt(a7,11).
doAt(a2,12).
doAt(endflow,13).
doAt(a1,15).
doAt(a8,16).
doAt(a14,17).
doAt(a9,18).
doAt(a19,19).
doAt(a4,20).
doAt(a23,21).
doAt(a17,22).
doAt(a25,23).
doAt(endflow,24).
doAt(a18,26).
doAt(a10,27).
doAt(endflow,28).
doAt(a12,30).
doAt(a21,31).
doAt(endflow,32).
doAt(a15,35).
doAt(a3,36).
doAt(a24,37).
doAt(a16,39).
doAt(a22,40).
doAt(a5,41).
doAt(a7,42).
doAt(a2,43).
doAt(endflow,45).
doAt(a1,47).
doAt(a8,48).
doAt(a14,49).
doAt(a9,50).
doAt(a19,51).
doAt(a4,52).
doAt(a23,53).
doAt(a17,54).
doAt(a25,55).
doAt(endflow,56).
doAt(a18,58).
doAt(a10,59).
doAt(endflow,61).
doAt(a12,63).
doAt(a21,65).
doAt(endflow,66).
compAt(a20,x10,34).
compAt(a20,x23,38).
compAt(a20,x26,44).
compAt(a20,x26,60).
compAt(a20,x26,64).
subsAt(a20,6).
leftrightnexts(12,15).
leftrightnexts(27,30).
leftrightnexts(10,26).
leftrightnexts(43,47).
leftrightnexts(59,63).
leftrightnexts(41,58).
leftrightnexts(6,34).