a-a a-t aaa aad aao aar aas aat ad- ada add ado adr ads adt aoa aod aoo aor aos aot ar- ara ard aro arr ars art as- asa asd aso asr ass ast at- ata atd ato atr ats att daa dad dao dar das dat dda ddd ddo ddr dds ddt doa dod doo dor dos dot dra drd dro drr drs drt dsa dsd dso dsr dss dst dta dtd dto dtr dts dtt oaa oad oao oar oas oat oda odd odo odr ods odt oo- ooa ood ooo oor oos oot or- ora ord oro orr ors ort os- osa osd oso osr oss ost ot- ota otd oto otr ots ott ra- raa rad rao rar ras rat rda rdd rdo rdr rds rdt roa rod roo ror ros rot rra rrd rrr rrs rrt rsa rsd rso rsr rss rst rta rtd rto rtr rts rtt saa sad sao sar sas sat sda sdd sdo sdr sds sdt soa sod soo sor sos sot sr- sra srd sro srr srs srt ss- ssa ssd sso ssr sss sst sta std sto str sts stt taa tad tao tar tas tat tda tdd tdo tdr tds tdt to- toa tod too tor tos tot tra trd tro trr trs trt tsa tsd tso tsr tss tst tta ttd tto ttr tts ttt