-ey bbb bbd bbe bbn bbt bby bdb bdd bde bdt bdy be- beb bed bee ben bet bey bnb bnd bne bnn bnt btb btd bte btn btt bty by- byd bye byn byt dbb dbd dbe dbn dbt dby ddb ddd dde ddn ddt ddy de- deb ded dee den det dey dnb dnd dne dnn dnt dny dtb dtd dte dtn dtt dty dy- dyb dyd dye dyn dyy ebb ebd ebe ebn ebt eby ed- edb edd ede edn edt edy eeb eed eee een eet eey en- enb end ene enn ent eny etb etd ete etn ett ety eyd eye eyn eyt nbb nbd nbe nbn nbt ndb ndd nde ndn ndt ndy ne- neb ned nee nen net ney nnb nne nnn nnt ntb ntd nte ntn ntt nyd nye nyn nyt nyy tbb tbd tbe tbn tbt tdb tdd tde tdn tdt tdy te- teb ted tee ten tet tey tnb tnd tne tnn tnt ttb ttd tte ttn ttt tty tyd tye tyn tyt ybe yby yde ydn ydt ydy yeb yed yee yen yet yey ynd yne ynn yny ytd yte ytn ytt yyb yye yyt yyy