-er a-a aaa aae aag aak aao aap aar aas aea aee aeg aek aeo aep aer aes ag- aga age agg agk ago agp agr ags aka ake akg akk ako akp akr aks aoa aoe aog aok aoo aop aor aos ap- apa ape apg apk apo app apr aps ar- ara are arg ark aro arp arr ars as- asa ase asg ask aso asp asr ass eaa eae eag eak eao eap ear eas eea eee eeg eek eeo eep eer ees ega ege egg ego egp egr egs eka eke ekg eko ekp ekr eks eo- eoa eoe eog eok eoo eop eor eos ep- epa epe epg epo epp epr eps era ere erg erk ero erp err ers es- esa ese esg esk eso esp esr ess g-p gaa gae gag gak gao gap gar gas ge- gea gee geg gek geo gep ger ges gga ggg ggo ggp ggr ggs gka gko gkp gks goa goe gog gok goo gop gor gos gpa gpe gpg gpk gpo gpp gpr gps gra gre grg grk gro grp grr grs gsa gse gsg gsk gso gsp gsr gss ka- kaa kae kag kak kao kap kar kas ke- kea kee keg kek keo kep ker kes kga kgo kgp kgs kke kkk kkp kkr kks koa koe kog kok koo kop kor kos kpa kpe kpk kpo kpp kpr kps kra krg krk kro krp krr krs ksa kse ksg ksk kso ksp ksr kss oaa oae oag oak oao oap oar oas oea oee oeg oeo oep oer oes oga oge ogg ogo ogp ogs oka oke okg okk oko okp okr oks oo- ooa oog ook ooo oop oor oos op- opa ope opg opk opo opp opr ops or- ora ore org ork oro orp orr ors os- osa ose osg osk oso osp osr oss p-p paa pae pag pak pao pap par pas pea pee peg pek peo pep per pes pga pge pgg pgk pgo pgp pgr pgs pka pke pkg pko pkp pkr pks poa poe pog pok poo pop por pos ppa ppe ppg ppk ppo ppp ppr pps pra pre prg prk pro prp prr prs ps- psa pse psg psk pso psp psr pss ra- raa rae rag rak rao rap rar ras re- rea ree reg rek reo rep rer res rga rge rgg rgk rgo rgp rgr rgs rke rkg rkk rko rkp rks roa roe rog rok roo rop ror ros rpa rpe rpg rpk rpo rpp rpr rps rra rrg rrk rrp rrr rrs rsa rse rsg rsk rso rsp rsr rss saa sae sag sak sao sap sar sas se- sea see seg sek seo sep ser ses sga sge sgg sgk sgo sgp sgr sgs sk- ska ske skg skk sko skp skr sks soa soe sog sok soo sop sor sos spa spe spg spk spo spp spr sps sr- sra sre srg srk sro srp srr srs ss- ssa sse ssg ssk sso ssp ssr sss