a-a aaa aag aao aar aau aav ag- aga agg ago agr agu agv aoa aog aoo aor aou aov ar- ara arg aro arr aru arv au- aua aug auo aur auv av- ava avg avo avr avu gaa gag gao gar gau gav gga ggg ggo ggr ggu ggv goa gog goo gor gou gov gra grg gro grr gru grv gu- gua gug guo gur guu guv gva gvg gvo gvr gvu oaa oag oao oar oau oav oga ogg ogo oo- ooa oog ooo oor oov or- ora org oro orr oru orv ou- oua ouo our ov- ova ovo ovv ra- raa rag rao rar rau rav rga rgg rgo rgr rgv roa rog roo ror rou rov rra rrg rrr rru rua rug ruo rur ruu ruv rva rvg rvo rvr rvu rvv ua- uaa uag uao uar uau uav uga ugg ugo ugr ugu uoa uog uoo uor ur- ura urg uro urr uru uua uug uur uuu uva uvo uvu uvv v-a vaa vag vao var vau vav vga vgg vgo vgr vgu voa vog voo vor vou vov vra vrg vrr vru vug vur vuv vva vvg vvo vvr vvv