-er a-a aaa aae aag aao aar aas aea aee aeg aeo aer aes ag- aga age agg ago agr ags aoa aoe aog aoo aor aos ar- ara are arg aro arr ars as- asa ase asg aso asr ass eaa eae eag eao ear eas eea eee eeg eeo eer ees ega ege egg ego egr egs eo- eoa eoe eog eoo eor eos era ere erg ero err ers es- esa ese esg eso esr ess gaa gae gag gao gar gas ge- gea gee geg geo ger ges gga ggg ggo ggr ggs goa goe gog goo gor gos gra gre grg gro grr grs gsa gse gsg gso gsr gss oaa oae oag oao oar oas oea oee oeg oeo oer oes oga oge ogg ogo ogs oo- ooa oog ooo oor oos or- ora ore org oro orr ors os- osa ose osg oso osr oss ra- raa rae rag rao rar ras re- rea ree reg reo rer res rga rge rgg rgo rgr rgs roa roe rog roo ror ros rra rrg rrr rrs rsa rse rsg rso rsr rss saa sae sag sao sar sas se- sea see seg seo ser ses sga sge sgg sgo sgr sgs soa soe sog soo sor sos sr- sra sre srg sro srr srs ss- ssa sse ssg sso ssr sss