a-a aaa aag aao aar aav ag- aga agg ago agr agv aoa aog aoo aor aov ar- ara arg aro arr arv av- ava avg avo avr gaa gag gao gar gav gga ggg ggo ggr ggv goa gog goo gor gov gra grg gro grr grv gva gvg gvo gvr oaa oag oao oar oav oga ogg ogo oo- ooa oog ooo oor oov or- ora org oro orr orv ov- ova ovo ovv ra- raa rag rao rar rav rga rgg rgo rgr rgv roa rog roo ror rov rra rrg rrr rva rvg rvo rvr rvv v-a vaa vag vao var vav vga vgg vgo vgr voa vog voo vor vov vra vrg vrr vva vvg vvo vvr vvv