-er a-a aaa aae aao aar aas aea aee aeo aer aes aoa aoe aoo aor aos ar- ara are aro arr ars as- asa ase aso asr ass eaa eae eao ear eas eea eee eeo eer ees eo- eoa eoe eoo eor eos era ere ero err ers es- esa ese eso esr ess oaa oae oao oar oas oea oee oeo oer oes oo- ooa ooo oor oos or- ora ore oro orr ors os- osa ose oso osr oss ra- raa rae rao rar ras re- rea ree reo rer res roa roe roo ror ros rra rrr rrs rsa rse rso rsr rss saa sae sao sar sas se- sea see seo ser ses soa soe soo sor sos sr- sra sre sro srr srs ss- ssa sse sso ssr sss