-er a-a aaa aae aag aak aao aar aas aea aee aeg aek aeo aer aes ag- aga age agg agk ago agr ags aka ake akg akk ako akr aks aoa aoe aog aok aoo aor aos ar- ara are arg ark aro arr ars as- asa ase asg ask aso asr ass eaa eae eag eak eao ear eas eea eee eeg eek eeo eer ees ega ege egg ego egr egs eka eke ekg eko ekr eks eo- eoa eoe eog eok eoo eor eos era ere erg erk ero err ers es- esa ese esg esk eso esr ess gaa gae gag gak gao gar gas ge- gea gee geg gek geo ger ges gga ggg ggo ggr ggs gka gko gks goa goe gog gok goo gor gos gra gre grg grk gro grr grs gsa gse gsg gsk gso gsr gss ka- kaa kae kag kak kao kar kas ke- kea kee keg kek keo ker kes kga kgo kgs kke kkk kkr kks koa koe kog kok koo kor kos kra krg krk kro krr krs ksa kse ksg ksk kso ksr kss oaa oae oag oak oao oar oas oea oee oeg oeo oer oes oga oge ogg ogo ogs oka oke okg okk oko okr oks oo- ooa oog ook ooo oor oos or- ora ore org ork oro orr ors os- osa ose osg osk oso osr oss ra- raa rae rag rak rao rar ras re- rea ree reg rek reo rer res rga rge rgg rgk rgo rgr rgs rke rkg rkk rko rks roa roe rog rok roo ror ros rra rrg rrk rrr rrs rsa rse rsg rsk rso rsr rss saa sae sag sak sao sar sas se- sea see seg sek seo ser ses sga sge sgg sgk sgo sgr sgs sk- ska ske skg skk sko skr sks soa soe sog sok soo sor sos sr- sra sre srg srk sro srr srs ss- ssa sse ssg ssk sso ssr sss