bbb bbd bbf bbi bbn bbt bby bdb bdd bdf bdi bdt bdy bfb bfd bff bfi bfn bft bfy bi- bib bid bif bii bin bit biy bnb bnd bnf bni bnn bnt btb btd btf bti btn btt bty by- byd byf byi byn byt dbb dbd dbf dbi dbn dbt dby ddb ddd ddf ddi ddn ddt ddy dfb dfd dff dfi dfn dft di- dib did dif dii din dit diy dnb dnd dnf dni dnn dnt dny dtb dtd dtf dti dtn dtt dty dy- dyb dyd dyn dyy fbb fbd fbf fbi fbn fbt fdb fdd fdf fdi fdn fdt ffd fff ffi ffn fft ffy fib fid fif fii fin fit fnb fnd fnf fni fnn fnt ftb ftd ftf fti ftn ftt fty fy- fyb fyi fyn i-d i-f ibb ibd ibf ibi ibn ibt iby idb idd idf idi idn idt idy ifb ifd iff ifi ifn ift ify iib iid iif iii iin iit in- inb ind inf ini inn int iny itb itd itf iti itn itt ity iyt iyy n-i nbb nbd nbf nbi nbn nbt ndb ndd ndf ndi ndn ndt ndy nfb nfd nff nfi nfn nft nib nid nif nii nin nit nnb nnf nni nnn nnt ntb ntd ntf nti ntn ntt nyd nyf nyn nyt nyy tbb tbd tbf tbi tbn tbt tdb tdd tdf tdi tdn tdt tdy tfb tfd tff tfi tfn tft tib tid tif tii tin tit tiy tnb tnd tnf tni tnn tnt ttb ttd ttf tti ttn ttt tty tyd tyf tyn tyt ybf ybi yby ydn ydt ydy yfd yff yft yid yif yii yin yit ynd ynn yny ytd ytf ytn ytt yyb yyf yyt yyy