-er a-a aaa aae aaf aam aao aar aas aea aee aef aem aeo aer aes af- afa afe aff afm afo afr afs ama ame amf amm amo amr ams aoa aoe aof aom aoo aor aos ar- ara are arf arm aro arr ars as- asa ase asf asm aso asr ass eaa eae eaf eam eao ear eas eea eee eef eem eeo eer ees ef- efa efe eff efm efo efr efs em- ema eme emf emm emo emr ems eo- eoa eoe eof eom eoo eor eos era ere erf erm ero err ers es- esa ese esf esm eso esr ess faa fae faf fam fao far fas fea fee fef fem feo fer fes ffa ffe fff ffm ffo ffr ffs fma fme fmf fmm fmo fmr fms foa foe fof fom foo for fos fra fre frf frm fro frr frs fsa fse fsf fsm fso fsr fss m-f m-o m-r maa mae maf mam mao mar mas mea mee mef mem meo mer mes mfa mfe mff mfm mfo mfr mfs mma mme mmf mmm mmo mmr mms moa moe mof mom moo mor mos mra mre mrf mrm mro mrr mrs msa mse msf msm mso msr mss oaa oae oaf oam oao oar oas oea oee oef oem oeo oer oes of- ofa ofe off ofm ofo ofr ofs om- oma ome omf omm omo omr oms oo- ooa oof oom ooo oor oos or- ora ore orf orm oro orr ors os- osa ose osf osm oso osr oss ra- raa rae raf ram rao rar ras re- rea ree ref rem reo rer res rfa rfe rff rfm rfo rfr rfs rma rme rmf rmm rmo rmr rms roa roe rof rom roo ror ros rra rrf rrm rrr rrs rsa rse rsf rsm rso rsr rss saa sae saf sam sao sar sas se- sea see sef sem seo ser ses sfa sfe sff sfm sfo sfr sfs sma sme smf smm smo smr sms soa soe sof som soo sor sos sr- sra sre srf srm sro srr srs ss- ssa sse ssf ssm sso ssr sss