-er ddd dde ddf ddm ddo ddr ddu ddx de- ded dee def dem deo der deu dex dfd dfe dff dfm dfo dfr dfu dfx dmd dme dmf dmm dmo dmr dmu dmx dod doe dof dom doo dor dou dox drd dre drm dro drr dru drx dud due duf dum duo dur dux dxd dxo dxr dxx ed- edd ede edf edm edo edr edu edx eed eee eef eem eeo eer eex ef- efd efe eff efm efo efr efx em- emd eme emf emm emo emr emu emx eo- eod eoe eof eom eoo eor eou erd ere erf erm ero err eru eu- eud eue euf eur eux ex- exd exe exo exr exu exx fdd fde fdf fdm fdo fdr fdu fdx fed fee fef fem feo fer feu fex ffd ffe fff ffm ffo ffr ffu ffx fmd fme fmf fmm fmo fmr fmu fmx foe fof fom foo for fou fox frd fre frf frm fro frr fru fud fue fuf fum fuo fur fuu fux fxe fxm fxr fxu fxx m-f m-o m-r mdd mde mdf mdm mdo mdr mdu mdx med mee mef mem meo mer meu mex mfd mfe mff mfm mfo mfr mfu mmd mme mmf mmm mmo mmr mmu mmx mod moe mof mom moo mor mou mox mrd mre mrf mrm mro mrr mru mrx mud mue muf mum mur muu mux mxd mxr mxu odd ode odf odm odo odr odu oed oee oef oem oeo oer oex of- ofd ofe off ofm ofo ofr ofu ofx om- omd ome omf omm omo omr omu omx oo- ood oof oom ooo oor oox or- ord ore orf orm oro orr oru orx ou- oud oue ouf oum ouo our ox- oxf oxo oxx rdd rde rdf rdm rdo rdr rdu rdx re- red ree ref rem reo rer reu rex rfd rfe rff rfm rfo rfr rfu rmd rme rmf rmm rmo rmr rmx rod roe rof rom roo ror rou rox rrd rrf rrm rrr rru rud rue ruf rum ruo rur ruu rux rxr udd ude udf udm udo udr udu udx ued uee uef uem uer ufd ufe uff ufm ufo ufr ufu ufx um- umd ume umf umm umo umr umu uod uoe uom uoo uor uox ur- urd ure urf urm uro urr uru urx uue uum uur uuu uxf uxo uxr uxu xde xdf xdm xdr xed xee xem xer xeu xex xfe xfm xfx xmd xmf xmm xmo xmr xmu xmx xod xof xom xoo xor xox xrd xrf xrx xue xxo xxx