-er ddd dde ddf ddg ddm ddo ddr dds de- ded dee def deg dem deo der des dfd dfe dff dfg dfm dfo dfr dfs dgd dge dgf dgg dgm dgr dgs dmd dme dmf dmg dmm dmo dmr dms dod doe dof dog dom doo dor dos drd dre drg drm dro drr drs dsd dse dsf dsg dsm dso dsr dss ed- edd ede edf edg edm edo edr eds eed eee eef eeg eem eeo eer ees ef- efd efe eff efg efm efo efr efs egd ege egf egg egm ego egr egs em- emd eme emf emg emm emo emr ems eo- eod eoe eof eog eom eoo eor eos erd ere erf erg erm ero err ers es- esd ese esf esg esm eso esr ess fdd fde fdf fdg fdm fdo fdr fds fed fee fef feg fem feo fer fes ffd ffe fff ffg ffm ffo ffr ffs fgd fge fgf fgg fgm fgr fgs fmd fme fmf fmg fmm fmo fmr fms foe fof fog fom foo for fos frd fre frf frg frm fro frr frs fsd fse fsf fsg fsm fso fsr fss g-d gdd gde gdf gdm gdo gdr gds ge- ged gee gef geg gem geo ger ges gfd gfe gff gfm gfo gfr gfs ggd ggg ggm ggo ggr ggs gmd gme gmf gmg gmm gmo gmr gms god goe gof gog gom goo gor gos grd gre grf grg grm gro grr grs gsd gse gsf gsg gsm gso gsr gss m-f m-o m-r mdd mde mdf mdg mdm mdo mdr mds med mee mef meg mem meo mer mes mfd mfe mff mfg mfm mfo mfr mfs mgd mge mgf mgm mgo mgr mgs mmd mme mmf mmg mmm mmo mmr mms mod moe mof mog mom moo mor mos mrd mre mrf mrg mrm mro mrr mrs msd mse msf msg msm mso msr mss odd ode odf odg odm odo odr ods oed oee oef oeg oem oeo oer oes of- ofd ofe off ofg ofm ofo ofr ofs ogd oge ogf ogg ogo ogs om- omd ome omf omg omm omo omr oms oo- ood oof oog oom ooo oor oos or- ord ore orf org orm oro orr ors os- osd ose osf osg osm oso osr oss rdd rde rdf rdg rdm rdo rdr rds re- red ree ref reg rem reo rer res rfd rfe rff rfg rfm rfo rfr rfs rgd rge rgf rgg rgo rgr rgs rmd rme rmf rmg rmm rmo rmr rms rod roe rof rog rom roo ror ros rrd rrf rrg rrm rrr rrs rsd rse rsf rsg rsm rso rsr rss sdd sde sdf sdg sdm sdo sdr sds se- sed see sef seg sem seo ser ses sfd sfe sff sfg sfm sfo sfr sfs sgd sge sgf sgg sgm sgo sgr sgs smd sme smf smg smm smo smr sms sod soe sof sog som soo sor sos sr- srd sre srf srg srm sro srr srs ss- ssd sse ssf ssg ssm sso ssr sss