a-a aaa aag aak aao aar ag- aga agg agk ago agr aka akg akk ako akr aoa aog aok aoo aor ar- ara arg ark aro arr gaa gag gak gao gar gga ggg ggo ggr gka gko goa gog gok goo gor gra grg grk gro grr ka- kaa kag kak kao kar kga kgo kkk kkr koa kog kok koo kor kra krg krk kro krr oaa oag oak oao oar oga ogg ogo oka okg okk oko okr oo- ooa oog ook ooo oor or- ora org ork oro orr ra- raa rag rak rao rar rga rgg rgk rgo rgr rkg rkk rko roa rog rok roo ror rra rrg rrk rrr