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(10,16).
next(16,17).
next(17,18).
next(18,19).
next(19,20).
next(20,21).
next(21,22).
next(22,23).
next(19,24).
next(24,25).
next(25,26).
next(26,27).
next(27,28).
next(24,29).
next(29,30).
next(30,31).
next(31,32).
next(32,33).
next(29,34).
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(38,43).
next(43,44).
next(44,45).
next(45,46).
doAt(startflow,3).
doAt(a24,6).
doAt(a21,7).
doAt(a4,8).
doAt(a6,9).
doAt(a14,10).
doAt(a3,11).
doAt(a2,12).
doAt(a15,13).
doAt(endflow,14).
doAt(a1,16).
doAt(a9,17).
doAt(a20,18).
doAt(a5,19).
doAt(a12,20).
doAt(a15,21).
doAt(endflow,22).
doAt(a22,24).
doAt(a7,25).
doAt(a15,26).
doAt(endflow,27).
doAt(a19,29).
doAt(a18,30).
doAt(a15,31).
doAt(endflow,32).
doAt(a17,34).
doAt(a11,35).
doAt(a25,36).
doAt(a23,37).
doAt(a8,38).
doAt(a13,39).
doAt(a15,40).
doAt(endflow,41).
doAt(a10,43).
doAt(a15,44).
doAt(endflow,45).
compAt(a24,x3,4).
subsAt(a24,5).
leftrightnexts(39,43).
leftrightnexts(30,34).
leftrightnexts(25,29).
leftrightnexts(20,24).
leftrightnexts(11,16).