-er -ey a-a a-b aaa aab aad aae aag aao aar aay ab- aba abb abd abe abg abo abr aby ad- ada adb add ade adg ado adr ady aea aeb aed aee aeg aeo aer aey ag- aga agb agd age agg ago agr agy aoa aob aod aoe aog aoo aor ar- ara arb ard are arg aro arr ary ay- aya ayd aye ayo ayr baa bab bad bae bag bao bar bay bba bbb bbd bbe bbg bbo bbr bby bda bdb bdd bde bdg bdo bdr bdy be- bea beb bed bee beg beo ber bey bga bgb bgd bge bgg bgo bgr boa bob bod boe bog boo bor boy bra brb brd bre brg bro brr bry by- bya byd bye byg byo byr daa dab dad dae dag dao dar day dba dbb dbd dbe dbg dbo dbr dby dda ddb ddd dde ddg ddo ddr ddy de- dea deb ded dee deg deo der dey dga dgd dge dgg dgr doa dob dod doe dog doo dor doy dra drb drd dre drg dro drr dry dy- dya dyb dyd dye dyo dyr dyy eaa eab ead eae eag eao ear eba ebb ebd ebe ebg ebo ebr eby ed- eda edb edd ede edg edo edr edy eea eeb eed eee eeg eeo eer eey ega egb egd ege egg ego egr egy eo- eoa eob eod eoe eog eoo eor era erb erd ere erg ero err ery eya eyd eye eyo eyr g-d gaa gab gad gae gag gao gar gay gba gbd gbe gbg gbo gbr gby gda gdb gdd gde gdo gdr ge- gea geb ged gee geg geo ger gey gga ggb ggd ggg ggo ggr goa gob god goe gog goo gor goy gra grb grd gre grg gro grr gry gy- gya gyb gyd gye gyo gyr oaa oab oad oae oag oao oar ob- oba obb obd obe obg obo obr oby oda odb odd ode odg odo odr oea oeb oed oee oeg oeo oer oey oga ogd oge ogg ogo ogy oo- ooa oob ood oog ooo oor or- ora orb ord ore org oro orr ory oya oyd oye oyo ra- raa rab rad rae rag rao rar ray rba rbb rbd rbe rbg rbo rbr rda rdb rdd rde rdg rdo rdr rdy re- rea reb red ree reg reo rer rey rga rgb rgd rge rgg rgo rgr roa rob rod roe rog roo ror roy rra rrb rrd rrg rrr ry- rya ryd rye ryg ryo ryr ryy yaa yab yad yae yag yao yar yay ybe ybg ybr yby yda yde ydg ydo ydy yea yeb yed yee yeg yeo yer yey yga ygo yob yod yoe yog yoo yor yoy yra yre yrg yro yyb yye yyg yyy