-er a-a aaa aae aam aao aar aas aea aee aem aeo aer aes ama ame amm amo amr ams aoa aoe aom aoo aor aos ar- ara are arm aro arr ars as- asa ase asm aso asr ass eaa eae eam eao ear eas eea eee eem eeo eer ees em- ema eme emm emo emr ems eo- eoa eoe eom eoo eor eos era ere erm ero err ers es- esa ese esm eso esr ess m-o m-r maa mae mam mao mar mas mea mee mem meo mer mes mma mme mmm mmo mmr mms moa moe mom moo mor mos mra mre mrm mro mrr mrs msa mse msm mso msr mss oaa oae oam oao oar oas oea oee oem oeo oer oes om- oma ome omm omo omr oms oo- ooa oom ooo oor oos or- ora ore orm oro orr ors os- osa ose osm oso osr oss ra- raa rae ram rao rar ras re- rea ree rem reo rer res rma rme rmm rmo rmr rms roa roe rom roo ror ros rra rrm rrr rrs rsa rse rsm rso rsr rss saa sae sam sao sar sas se- sea see sem seo ser ses sma sme smm smo smr sms soa soe som soo sor sos sr- sra sre srm sro srr srs ss- ssa sse ssm sso ssr sss