a-a aaa aag aan aao aar ag- aga agg agn ago agr an- ana ang ann ano anr aoa aog aon aoo aor ar- ara arg arn aro arr gaa gag gan gao gar gga ggg ggn ggo ggr gna gnn gno gnr goa gog gon goo gor gra grg grn gro grr naa nag nan nao nar nga ngg ngn ngo nna nng nnn nno no- noa nog non noo nor nra nrg nrn nro nrr oaa oag oan oao oar oga ogg ogn ogo on- ona ong onn ono onr oo- ooa oog oon ooo oor or- ora org orn oro orr ra- raa rag ran rao rar rga rgg rgn rgo rgr rna rng rnn rno rnr roa rog ron roo ror rra rrg rrn rrr