a-a aaa aad aaf aam aao aar aas ad- ada add adf adm ado adr ads af- afa afd aff afm afo afr afs ama amd amf amm amo amr ams aoa aod aof aom aoo aor aos ar- ara ard arf arm aro arr ars as- asa asd asf asm aso asr ass daa dad daf dam dao dar das dda ddd ddf ddm ddo ddr dds dfa dfd dff dfm dfo dfr dfs dma dmd dmf dmm dmo dmr dms doa dod dof dom doo dor dos dra drd drm dro drr drs dsa dsd dsf dsm dso dsr dss faa fad faf fam fao far fas fda fdd fdf fdm fdo fdr fds ffa ffd fff ffm ffo ffr ffs fma fmd fmf fmm fmo fmr fms foa fof fom foo for fos fra frd frf frm fro frr frs fsa fsd fsf fsm fso fsr fss m-f m-o m-r maa mad maf mam mao mar mas mda mdd mdf mdm mdo mdr mds mfa mfd mff mfm mfo mfr mfs mma mmd mmf mmm mmo mmr mms moa mod mof mom moo mor mos mra mrd mrf mrm mro mrr mrs msa msd msf msm mso msr mss oaa oad oaf oam oao oar oas oda odd odf odm odo odr ods of- ofa ofd off ofm ofo ofr ofs om- oma omd omf omm omo omr oms oo- ooa ood oof oom ooo oor oos or- ora ord orf orm oro orr ors os- osa osd osf osm oso osr oss ra- raa rad raf ram rao rar ras rda rdd rdf rdm rdo rdr rds rfa rfd rff rfm rfo rfr rfs rma rmd rmf rmm rmo rmr rms roa rod rof rom roo ror ros rra rrd rrf rrm rrr rrs rsa rsd rsf rsm rso rsr rss saa sad saf sam sao sar sas sda sdd sdf sdm sdo sdr sds sfa sfd sff sfm sfo sfr sfs sma smd smf smm smo smr sms soa sod sof som soo sor sos sr- sra srd srf srm sro srr srs ss- ssa ssd ssf ssm sso ssr sss