a-a a-z aaa aag aar aas aaz ag- aga agg agr ags agz ar- ara arg arr ars arz as- asa asg asr ass asz az- aza azg azs azz gaa gag gar gas gaz gga ggg ggr ggs ggz gra grg grr grs gsa gsg gsr gss gza gzr ra- raa rag rar ras raz rga rgg rgr rgs rra rrg rrr rrs rsa rsg rsr rss rza saa sag sar sas saz sga sgg sgr sgs sr- sra srg srr srs ss- ssa ssg ssr sss ssz sza szr z-g zaa zag zar zas zaz zgg zgs zrs zsa zsg zsz zzr zzs zzz