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(21,33).
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).
doAt(startflow,7).
doAt(a7,13).
doAt(a14,19).
doAt(a13,21).
doAt(a8,25).
doAt(a4,27).
doAt(a2,28).
doAt(a12,29).
doAt(a6,30).
doAt(endflow,31).
doAt(a10,34).
doAt(a5,35).
doAt(a3,36).
doAt(a1,37).
doAt(a15,38).
doAt(a9,39).
doAt(a2,40).
doAt(a12,41).
doAt(a6,42).
doAt(endflow,43).
compAt(a4,x2,8).
compAt(a7,x2,9).
compAt(a8,x3,10).
compAt(a14,x3,11).
compAt(a7,x3,12).
compAt(a4,x1,14).
compAt(a8,x1,15).
compAt(a14,x1,16).
compAt(a8,x3,17).
compAt(a14,x3,18).
compAt(a8,x3,20).
compAt(a4,x2,22).
compAt(a4,x1,23).
compAt(a8,x1,24).
compAt(a4,x2,33).
subsAt(a4,26).
leftrightnexts(22,33).