-er -ey a-a aaa aae aao aar aav aay aea aee aeo aer aev aey aoa aoe aoo aor aov ar- ara are aro arr arv ary av- ava ave avo avr avy ay- aya aye ayo ayr eaa eae eao ear eav eea eee eeo eer eev eey eo- eoa eoe eoo eor era ere ero err erv ery eva eve evo evr evv evy eya eye eyo eyr oaa oae oao oar oav oea oee oeo oer oey oo- ooa ooo oor oov or- ora ore oro orr orv ory ov- ova ove ovo ovv oya oye oyo ra- raa rae rao rar rav ray re- rea ree reo rer rev rey roa roe roo ror rov roy rra rrr rva rve rvo rvr rvv rvy ry- rya rye ryo ryr ryy v-a v-e vaa vae vao var vav vay vea vee veo ver vey voa voe voo vor vov voy vra vre vrr vry vva vvo vvr vvv vye yaa yae yao yar yav yay yea yee yeo yer yev yey yoe yoo yor yoy yra yre yro yva yve yvo yvr yvy yye yyy