-ey a-a a-b aaa aab aad aae aah aay ab- aba abb abd abe abh aby ad- ada adb add ade adh ady aea aeb aed aee aeh aey aha ahb ahd ahe ahh ahy ay- aya ayd aye ayh baa bab bad bae bah bay bba bbb bbd bbe bbh bby bda bdb bdd bde bdh bdy be- bea beb bed bee beh bey bha bhb bhd bhe bhh by- bya byd bye byh daa dab dad dae dah day dba dbb dbd dbe dbh dby dda ddb ddd dde ddh ddy de- dea deb ded dee deh dey dh- dha dhb dhd dhe dhh dy- dya dyb dyd dye dyy eaa eab ead eae eah eba ebb ebd ebe ebh eby ed- eda edb edd ede edh edy eea eeb eed eee eey eha ehb ehd ehe ehh eya eyd eye haa hab had hae hah hay hba hbb hbd hbe hbh hby hda hdb hdd hde hdh hdy he- hea heb hed hee heh hey hha hhb hhd hhe hhh hhy hy- hya hyb hyd hye hyh hyy yaa yab yad yae yah yay ybe yby yda yde ydy yea yeb yed yee yeh yey yha yhe yyb yye yyy