a-a aaa aad aaf aar aas ad- ada add adf adr ads af- afa afd aff afr afs ar- ara ard arf arr ars as- asa asd asf asr ass daa dad daf dar das dda ddd ddf ddr dds dfa dfd dff dfr dfs dra drd drr drs dsa dsd dsf dsr dss faa fad faf far fas fda fdd fdf fdr fds ffa ffd fff ffr ffs fra frd frf frr frs fsa fsd fsf fsr fss ra- raa rad raf rar ras rda rdd rdf rdr rds rfa rfd rff rfr rfs rra rrd rrf rrr rrs rsa rsd rsf rsr rss saa sad saf sar sas sda sdd sdf sdr sds sfa sfd sff sfr sfs sr- sra srd srf srr srs ss- ssa ssd ssf ssr sss