-er a-a aaa aad aae aaf aag aao aar aas ad- ada add ade adf adg ado adr ads aea aed aee aef aeg aeo aer aes af- afa afd afe aff afg afo afr afs ag- aga agd age agf agg ago agr ags aoa aod aoe aof aog aoo aor aos ar- ara ard are arf arg aro arr ars as- asa asd ase asf asg aso asr ass daa dad dae daf dag dao dar das dda ddd dde ddf ddg ddo ddr dds de- dea ded dee def deg deo der des dfa dfd dfe dff dfg dfo dfr dfs dga dgd dge dgf dgg dgr dgs doa dod doe dof dog doo dor dos dra drd dre drg dro drr drs dsa dsd dse dsf dsg dso dsr dss eaa ead eae eaf eag eao ear eas ed- eda edd ede edf edg edo edr eds eea eed eee eef eeg eeo eer ees ef- efa efd efe eff efg efo efr efs ega egd ege egf egg ego egr egs eo- eoa eod eoe eof eog eoo eor eos era erd ere erf erg ero err ers es- esa esd ese esf esg eso esr ess faa fad fae faf fag fao far fas fda fdd fde fdf fdg fdo fdr fds fea fed fee fef feg feo fer fes ffa ffd ffe fff ffg ffo ffr ffs fga fgd fge fgf fgg fgr fgs foa foe fof fog foo for fos fra frd fre frf frg fro frr frs fsa fsd fse fsf fsg fso fsr fss g-d gaa gad gae gaf gag gao gar gas gda gdd gde gdf gdo gdr gds ge- gea ged gee gef geg geo ger ges gfa gfd gfe gff gfo gfr gfs gga ggd ggg ggo ggr ggs goa god goe gof gog goo gor gos gra grd gre grf grg gro grr grs gsa gsd gse gsf gsg gso gsr gss oaa oad oae oaf oag oao oar oas oda odd ode odf odg odo odr ods oea oed oee oef oeg oeo oer oes of- ofa ofd ofe off ofg ofo ofr ofs oga ogd oge ogf ogg ogo ogs oo- ooa ood oof oog ooo oor oos or- ora ord ore orf org oro orr ors os- osa osd ose osf osg oso osr oss ra- raa rad rae raf rag rao rar ras rda rdd rde rdf rdg rdo rdr rds re- rea red ree ref reg reo rer res rfa rfd rfe rff rfg rfo rfr rfs rga rgd rge rgf rgg rgo rgr rgs roa rod roe rof rog roo ror ros rra rrd rrf rrg rrr rrs rsa rsd rse rsf rsg rso rsr rss saa sad sae saf sag sao sar sas sda sdd sde sdf sdg sdo sdr sds se- sea sed see sef seg seo ser ses sfa sfd sfe sff sfg sfo sfr sfs sga sgd sge sgf sgg sgo sgr sgs soa sod soe sof sog soo sor sos sr- sra srd sre srf srg sro srr srs ss- ssa ssd sse ssf ssg sso ssr sss