a-a a-t aaa aad aaf aak aao aar aas aat ad- ada add adf adk ado adr ads adt af- afa afd aff afk afo afr afs aft aka akd akk ako akr aks aoa aod aof aok aoo aor aos aot ar- ara ard arf ark aro arr ars art as- asa asd asf ask aso asr ass ast at- ata atd atf ato atr ats att daa dad daf dak dao dar das dat dda ddd ddf ddk ddo ddr dds ddt dfa dfd dff dfk dfo dfr dfs dft dka dkk dko dkr dks dkt doa dod dof dok doo dor dos dot dra drd drk dro drr drs drt dsa dsd dsf dsk dso dsr dss dst dta dtd dtf dtk dto dtr dts dtt faa fad faf fak fao far fas fat fda fdd fdf fdk fdo fdr fds fdt ffa ffd fff ffk ffo ffr ffs fft fka fkf fkk fkt foa fof fok foo for fos fot fra frd frf frk fro frr frs frt fsa fsd fsf fsk fso fsr fss fst fta ftd ftf ftk fto ftr fts ftt k-t ka- kaa kad kaf kak kao kar kas kat kda kdf kdk kdo kdr kds kdt kfa kfd kff kfo kfs kkk kkr kks kkt koa kod kof kok koo kor kos kot kra krd krf krk kro krr krs krt ksa ksd ksf ksk kso ksr kss kst kta ktf ktk kto ktr kts ktt oaa oad oaf oak oao oar oas oat oda odd odf odo odr ods odt of- ofa ofd off ofo ofr ofs oft oka okd okk oko okr oks oo- ooa ood oof ook ooo oor oos oot or- ora ord orf ork oro orr ors ort os- osa osd osf osk oso osr oss ost ot- ota otd otf otk oto otr ots ott ra- raa rad raf rak rao rar ras rat rda rdd rdf rdo rdr rds rdt rfa rfd rff rfk rfo rfr rfs rft rkf rkk rko rks rkt roa rod rof rok roo ror ros rot rra rrd rrf rrk rrr rrs rrt rsa rsd rsf rsk rso rsr rss rst rta rtd rtf rtk rto rtr rts rtt saa sad saf sak sao sar sas sat sda sdd sdf sdk sdo sdr sds sdt sfa sfd sff sfk sfo sfr sfs sft sk- ska skd skf skk sko skr sks skt soa sod sof sok soo sor sos sot sr- sra srd srf srk sro srr srs srt ss- ssa ssd ssf ssk sso ssr sss sst sta std stf stk sto str sts stt taa tad taf tak tao tar tas tat tda tdd tdf tdk tdo tdr tds tdt tfa tfd tff tfk tfo tfr tfs tft tka tkk tko tkr tks tkt to- toa tod tof tok too tor tos tot tra trd trf trk tro trr trs trt tsa tsd tsf tsk tso tsr tss tst tta ttd ttf ttk tto ttr tts ttt