a-a aaa aao aar aav aaw aay aoa aoo aor aov aow ar- ara aro arr arv arw ary av- ava avo avr avw avy aw- awa awo awr awv aww awy ay- aya ayo ayr ayw oaa oao oar oav oaw oo- ooa ooo oor oov oow or- ora oro orr orv ory ov- ova ovo ovv owa owo oww oya oyo ra- raa rao rar rav raw ray roa roo ror rov row roy rra rrr rva rvo rvr rvv rvw rvy rwa rwr rwy ry- rya ryo ryr ryy v-a vaa vao var vav vaw vay voa voo vor vov vow voy vra vrr vry vva vvo vvr vvv vwa vwo waa wao war wav waw way woa woo wor wow woy wr- wra wro wrr wrw wry wva wvw wwa wwo wwv www wy- wya wyo wyr yaa yao yar yav yaw yay yoo yor yow yoy yra yro yva yvo yvr yvy yyy