a-a a-t aaa aad aao aas aat ad- ada add ado ads adt aoa aod aoo aos aot as- asa asd aso ass ast at- ata atd ato ats att daa dad dao das dat dda ddd ddo dds ddt doa dod doo dos dot dsa dsd dso dss dst dta dtd dto dts dtt oaa oad oao oas oat oda odd odo ods odt oo- ooa ood ooo oos oot os- osa osd oso oss ost ot- ota otd oto ots ott saa sad sao sas sat sda sdd sdo sds sdt soa sod soo sos sot ss- ssa ssd sso sss sst sta std sto sts stt taa tad tao tas tat tda tdd tdo tds tdt to- toa tod too tos tot tsa tsd tso tss tst tta ttd tto tts ttt