a-a aaa aad aao aar aas ad- ada add ado adr ads aoa aod aoo aor aos ar- ara ard aro arr ars as- asa asd aso asr ass daa dad dao dar das dda ddd ddo ddr dds doa dod doo dor dos dra drd dro drr drs dsa dsd dso dsr dss oaa oad oao oar oas oda odd odo odr ods oo- ooa ood ooo oor oos or- ora ord oro orr ors os- osa osd oso osr oss ra- raa rad rao rar ras rda rdd rdo rdr rds roa rod roo ror ros rra rrd rrr rrs rsa rsd rso rsr rss saa sad sao sar sas sda sdd sdo sdr sds soa sod soo sor sos sr- sra srd sro srr srs ss- ssa ssd sso ssr sss