a-a aaa aad aaf aak aam aao aar aas ad- ada add adf adk adm ado adr ads af- afa afd aff afk afm afo afr afs aka akd akk akm ako akr aks ama amd amf amk amm amo amr ams aoa aod aof aok aom aoo aor aos ar- ara ard arf ark arm aro arr ars as- asa asd asf ask asm aso asr ass daa dad daf dak dam dao dar das dda ddd ddf ddk ddm ddo ddr dds dfa dfd dff dfk dfm dfo dfr dfs dka dkk dkm dko dkr dks dma dmd dmf dmk dmm dmo dmr dms doa dod dof dok dom doo dor dos dra drd drk drm dro drr drs dsa dsd dsf dsk dsm dso dsr dss faa fad faf fak fam fao far fas fda fdd fdf fdk fdm fdo fdr fds ffa ffd fff ffk ffm ffo ffr ffs fka fkf fkk fkm fma fmd fmf fmm fmo fmr fms foa fof fok fom foo for fos fra frd frf frk frm fro frr frs fsa fsd fsf fsk fsm fso fsr fss ka- kaa kad kaf kak kam kao kar kas kda kdf kdk kdm kdo kdr kds kfa kfd kff kfm kfo kfs kkk kkm kkr kks kma kmd kmf kmk kmm kmo kms koa kod kof kok kom koo kor kos kra krd krf krk kro krr krs ksa ksd ksf ksk ksm kso ksr kss m-f m-o m-r maa mad maf mak mam mao mar mas mda mdd mdf mdk mdm mdo mdr mds mfa mfd mff mfm mfo mfr mfs mka mkd mkk mkm mko mkr mks mma mmd mmf mmk mmm mmo mmr mms moa mod mof mok mom moo mor mos mra mrd mrf mrk mrm mro mrr mrs msa msd msf msk msm mso msr mss oaa oad oaf oak oam oao oar oas oda odd odf odm odo odr ods of- ofa ofd off ofm ofo ofr ofs oka okd okk oko okr oks om- oma omd omf omm omo omr oms oo- ooa ood oof ook oom ooo oor oos or- ora ord orf ork orm oro orr ors os- osa osd osf osk osm oso osr oss ra- raa rad raf rak ram rao rar ras rda rdd rdf rdm rdo rdr rds rfa rfd rff rfk rfm rfo rfr rfs rkf rkk rkm rko rks rma rmd rmf rmm rmo rmr rms roa rod rof rok rom roo ror ros rra rrd rrf rrk rrm rrr rrs rsa rsd rsf rsk rsm rso rsr rss saa sad saf sak sam sao sar sas sda sdd sdf sdk sdm sdo sdr sds sfa sfd sff sfk sfm sfo sfr sfs sk- ska skd skf skk skm sko skr sks sma smd smf smk smm smo smr sms soa sod sof sok som soo sor sos sr- sra srd srf srk srm sro srr srs ss- ssa ssd ssf ssk ssm sso ssr sss