-er a-a aaa aae aag aak aar aas aea aee aeg aek aer aes ag- aga age agg agk agr ags aka ake akg akk akr aks ar- ara are arg ark arr ars as- asa ase asg ask asr ass eaa eae eag eak ear eas eea eee eeg eek eer ees ega ege egg egr egs eka eke ekg ekr eks era ere erg erk err ers es- esa ese esg esk esr ess gaa gae gag gak gar gas ge- gea gee geg gek ger ges gga ggg ggr ggs gka gks gra gre grg grk grr grs gsa gse gsg gsk gsr gss ka- kaa kae kag kak kar kas ke- kea kee keg kek ker kes kga kgs kke kkk kkr kks kra krg krk krr krs ksa kse ksg ksk ksr kss ra- raa rae rag rak rar ras re- rea ree reg rek rer res rga rge rgg rgk rgr rgs rke rkg rkk rks rra rrg rrk rrr rrs rsa rse rsg rsk rsr rss saa sae sag sak sar sas se- sea see seg sek ser ses sga sge sgg sgk sgr sgs sk- ska ske skg skk skr sks sr- sra sre srg srk srr srs ss- ssa sse ssg ssk ssr sss