-ey a-a a-b a-t aaa aab aad aae aan aat aay ab- aba abb abd abe abn abt aby ad- ada adb add ade adn adt ady aea aeb aed aee aen aet aey an- ana anb and ane ann ant any at- ata atb atd ate atn att ay- aya ayd aye ayn ayt baa bab bad bae ban bat bay bba bbb bbd bbe bbn bbt bby bda bdb bdd bde bdt bdy be- bea beb bed bee ben bet bey bna bnb bnd bne bnn bnt bta btb btd bte btn btt bty by- bya byd bye byn byt daa dab dad dae dan dat day dba dbb dbd dbe dbn dbt dby dda ddb ddd dde ddn ddt ddy de- dea deb ded dee den det dey dna dnb dnd dne dnn dnt dny dta dtb dtd dte dtn dtt dty dy- dya dyb dyd dye dyn dyy eaa eab ead eae ean eat eba ebb ebd ebe ebn ebt eby ed- eda edb edd ede edn edt edy eea eeb eed eee een eet eey en- ena enb end ene enn ent eny eta etb etd ete etn ett ety eya eyd eye eyn eyt naa nab nad nae nan nat nay nba nbb nbd nbe nbn nbt nda ndb ndd nde ndn ndt ndy ne- nea neb ned nee nen net ney nna nnb nne nnn nnt nta ntb ntd nte ntn ntt nya nyd nye nyn nyt nyy taa tab tad tae tan tat tay tba tbb tbd tbe tbn tbt tda tdb tdd tde tdn tdt tdy te- tea teb ted tee ten tet tey tna tnb tnd tne tnn tnt tta ttb ttd tte ttn ttt tty tya tyd tye tyn tyt yaa yab yad yae yan yat yay ybe yby yda yde ydn ydt ydy yea yeb yed yee yen yet yey yna ynd yne ynn yny yta ytd yte ytn ytt yyb yye yyt yyy