-er -ey a-a a-b aaa aab aad aae aah aao aar aay ab- aba abb abd abe abh abo abr aby ad- ada adb add ade adh ado adr ady aea aeb aed aee aeh aeo aer aey aha ahb ahd ahe ahh aho ahr ahy aoa aob aod aoe aoh aoo aor ar- ara arb ard are arh aro arr ary ay- aya ayd aye ayh ayo ayr baa bab bad bae bah bao bar bay bba bbb bbd bbe bbh bbo bbr bby bda bdb bdd bde bdh bdo bdr bdy be- bea beb bed bee beh beo ber bey bha bhb bhd bhe bhh bho bhr boa bob bod boe boh boo bor boy bra brb brd bre brh bro brr bry by- bya byd bye byh byo byr daa dab dad dae dah dao dar day dba dbb dbd dbe dbh dbo dbr dby dda ddb ddd dde ddh ddo ddr ddy de- dea deb ded dee deh deo der dey dh- dha dhb dhd dhe dhh dho dhr doa dob dod doe doh doo dor doy dra drb drd dre dro drr dry dy- dya dyb dyd dye dyo dyr dyy eaa eab ead eae eah eao ear eba ebb ebd ebe ebh ebo ebr eby ed- eda edb edd ede edh edo edr edy eea eeb eed eee eeo eer eey eha ehb ehd ehe ehh eho ehr eo- eoa eob eod eoe eoh eoo eor era erb erd ere erh ero err ery eya eyd eye eyo eyr haa hab had hae hah hao har hay hba hbb hbd hbe hbh hbo hbr hby hda hdb hdd hde hdh hdo hdr hdy he- hea heb hed hee heh heo her hey hha hhb hhd hhe hhh hho hhr hhy hoa hob hod hoe hoh hoo hor hoy hr- hra hrb hrd hre hrh hro hrr hy- hya hyb hyd hye hyh hyo hyr hyy oaa oab oad oae oah oao oar ob- oba obb obd obe obh obo obr oby oda odb odd ode odh odo odr oea oeb oed oee oeh oeo oer oey oha ohd ohe ohh oho ohr oo- ooa oob ood ooh ooo oor or- ora orb ord ore orh oro orr ory oya oyd oye oyo ra- raa rab rad rae rah rao rar ray rba rbb rbd rbe rbh rbo rbr rda rdb rdd rde rdh rdo rdr rdy re- rea reb red ree reh reo rer rey rh- rha rhb rhd rhe rhh rho rhr roa rob rod roe roh roo ror roy rra rrb rrd rrh rrr ry- rya ryd rye ryo ryr ryy yaa yab yad yae yah yao yar yay ybe ybr yby yda yde ydo ydy yea yeb yed yee yeh yeo yer yey yha yhe yob yod yoe yoo yor yoy yra yre yro yyb yye yyy