-er -ol ddd dde ddl ddm ddo ddr ddx de- ded dee del dem deo der dex dl- dld dle dll dlm dlo dlr dlx dmd dme dml dmm dmo dmr dmx dod doe dol dom doo dor dox drd dre drl drm dro drr drx dxd dxl dxo dxr dxx ed- edd ede edl edm edo edr edx eed eee eel eem eeo eer eex eld ele ell elm elo elr elx em- emd eme eml emm emo emr emx eo- eod eoe eol eom eoo eor erd ere erl erm ero err ex- exd exe exl exo exr exx ldd lde ldl ldm ldo ldr led lee lel lem leo ler lex lld lle lll llm llo llr lmd lme lml lmm lmo lmr lod loe lol lom loo lor lox lrd lrm lro lrr lxd lxo lxr lxx m-o m-r mdd mde mdl mdm mdo mdr mdx med mee mel mem meo mer mex mld mle mll mlm mlo mlr mlx mmd mme mml mmm mmo mmr mmx mod moe mol mom moo mor mox mrd mre mrl mrm mro mrr mrx mxd mxl mxr odd ode odl odm odo odr oed oee oel oem oeo oer oex old ole oll olm olo om- omd ome oml omm omo omr omx oo- ood ool oom ooo oor oox or- ord ore orl orm oro orr orx ox- oxo oxx rdd rde rdl rdm rdo rdr rdx re- red ree rel rem reo rer rex rld rle rll rlm rlo rlr rmd rme rml rmm rmo rmr rmx rod roe rol rom roo ror rox rrd rrl rrm rrr rxr xde xdm xdr xed xee xel xem xer xex xld xlm xlr xmd xml xmm xmo xmr xmx xod xom xoo xor xox xrd xrx xxl xxo xxx