-er ddd dde ddf ddg ddm ddo ddr de- ded dee def deg dem deo der dfd dfe dff dfg dfm dfo dfr dgd dge dgf dgg dgm dgr dmd dme dmf dmg dmm dmo dmr dod doe dof dog dom doo dor drd dre drg drm dro drr ed- edd ede edf edg edm edo edr eed eee eef eeg eem eeo eer ef- efd efe eff efg efm efo efr egd ege egf egg egm ego egr em- emd eme emf emg emm emo emr eo- eod eoe eof eog eom eoo eor erd ere erf erg erm ero err fdd fde fdf fdg fdm fdo fdr fed fee fef feg fem feo fer ffd ffe fff ffg ffm ffo ffr fgd fge fgf fgg fgm fgr fmd fme fmf fmg fmm fmo fmr foe fof fog fom foo for frd fre frf frg frm fro frr g-d gdd gde gdf gdm gdo gdr ge- ged gee gef geg gem geo ger gfd gfe gff gfm gfo gfr ggd ggg ggm ggo ggr gmd gme gmf gmg gmm gmo gmr god goe gof gog gom goo gor grd gre grf grg grm gro grr m-f m-o m-r mdd mde mdf mdg mdm mdo mdr med mee mef meg mem meo mer mfd mfe mff mfg mfm mfo mfr mgd mge mgf mgm mgo mgr mmd mme mmf mmg mmm mmo mmr mod moe mof mog mom moo mor mrd mre mrf mrg mrm mro mrr odd ode odf odg odm odo odr oed oee oef oeg oem oeo oer of- ofd ofe off ofg ofm ofo ofr ogd oge ogf ogg ogo om- omd ome omf omg omm omo omr oo- ood oof oog oom ooo oor or- ord ore orf org orm oro orr rdd rde rdf rdg rdm rdo rdr re- red ree ref reg rem reo rer rfd rfe rff rfg rfm rfo rfr rgd rge rgf rgg rgo rgr rmd rme rmf rmg rmm rmo rmr rod roe rof rog rom roo ror rrd rrf rrg rrm rrr