-ey a-a a-b aaa aab aad aae aan aay ab- aba abb abd abe abn aby ad- ada adb add ade adn ady aea aeb aed aee aen aey an- ana anb and ane ann any ay- aya ayd aye ayn baa bab bad bae ban bay bba bbb bbd bbe bbn bby bda bdb bdd bde bdy be- bea beb bed bee ben bey bna bnb bnd bne bnn by- bya byd bye byn daa dab dad dae dan day dba dbb dbd dbe dbn dby dda ddb ddd dde ddn ddy de- dea deb ded dee den dey dna dnb dnd dne dnn dny dy- dya dyb dyd dye dyn dyy eaa eab ead eae ean eba ebb ebd ebe ebn eby ed- eda edb edd ede edn edy eea eeb eed eee een eey en- ena enb end ene enn eny eya eyd eye eyn naa nab nad nae nan nay nba nbb nbd nbe nbn nda ndb ndd nde ndn ndy ne- nea neb ned nee nen ney nna nnb nne nnn nya nyd nye nyn nyy yaa yab yad yae yan yay ybe yby yda yde ydn ydy yea yeb yed yee yen yey yna ynd yne ynn yny yyb yye yyy