-er -ey ddd dde ddm ddo ddr ddx ddy de- ded dee dem deo der dex dey dmd dme dmm dmo dmr dmx dod doe dom doo dor dox doy drd dre drm dro drr drx dry dxd dxo dxr dxx dy- dyd dye dym dyo dyr dyy ed- edd ede edm edo edr edx edy eed eee eem eeo eer eex eey em- emd eme emm emo emr emx eo- eod eoe eom eoo eor erd ere erm ero err ery ex- exd exe exo exr exx exy eyd eye eym eyo eyr m-o m-r mdd mde mdm mdo mdr mdx mdy med mee mem meo mer mex mey mmd mme mmm mmo mmr mmx mod moe mom moo mor mox moy mrd mre mrm mro mrr mrx mry mxd mxr my- myd mye mym myo myr myx odd ode odm odo odr oed oee oem oeo oer oex oey om- omd ome omm omo omr omx omy oo- ood oom ooo oor oox or- ord ore orm oro orr orx ory ox- oxo oxx oxy oyd oye oyo rdd rde rdm rdo rdr rdx rdy re- red ree rem reo rer rex rey rmd rme rmm rmo rmr rmx rod roe rom roo ror rox roy rrd rrm rrr rxr ry- ryd rye rym ryo ryr ryy xde xdm xdr xed xee xem xer xex xmd xmm xmo xmr xmx xod xom xoo xor xox xrd xrx xry xxo xxx xxy xyr xyy yde ydo ydy yed yee yem yeo yer yex yey yme ymm ymo yod yoe yom yoo yor yox yoy yre yro yxe yxy yye yyy