-ey a-a a-b aaa aab aad aae aag aao aay ab- aba abb abd abe abg abo aby ad- ada adb add ade adg ado ady aea aeb aed aee aeg aeo aey ag- aga agb agd age agg ago agy aoa aob aod aoe aog aoo ay- aya ayd aye ayo baa bab bad bae bag bao bay bba bbb bbd bbe bbg bbo bby bda bdb bdd bde bdg bdo bdy be- bea beb bed bee beg beo bey bga bgb bgd bge bgg bgo boa bob bod boe bog boo boy by- bya byd bye byg byo daa dab dad dae dag dao day dba dbb dbd dbe dbg dbo dby dda ddb ddd dde ddg ddo ddy de- dea deb ded dee deg deo dey dga dgd dge dgg doa dob dod doe dog doo doy dy- dya dyb dyd dye dyo dyy eaa eab ead eae eag eao eba ebb ebd ebe ebg ebo eby ed- eda edb edd ede edg edo edy eea eeb eed eee eeg eeo eey ega egb egd ege egg ego egy eo- eoa eob eod eoe eog eoo eya eyd eye eyo g-d gaa gab gad gae gag gao gay gba gbd gbe gbg gbo gby gda gdb gdd gde gdo ge- gea geb ged gee geg geo gey gga ggb ggd ggg ggo goa gob god goe gog goo goy gy- gya gyb gyd gye gyo oaa oab oad oae oag oao ob- oba obb obd obe obg obo oby oda odb odd ode odg odo oea oeb oed oee oeg oeo oey oga ogd oge ogg ogo ogy oo- ooa oob ood oog ooo oya oyd oye oyo yaa yab yad yae yag yao yay ybe ybg yby yda yde ydg ydo ydy yea yeb yed yee yeg yeo yey yga ygo yob yod yoe yog yoo yoy yyb yye yyg yyy