-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

dddd ddre dedd dede dedo dedu deed deef deem deer defe deff defo dem- demd deme demo demu deor der- dere derf derm dero derr deue deum deur deux dex- dexe dfer dfoe dfrf do-x dod- dodd dode dodo doer doff dome domm domo dood doof doom door dord dore dorf dorm doro dorr doru doud doue douf doum dour doux dred dree dref drem drod drof drom drou drue drum druu dudd dude dudo dudu duer duff dufu dume dumm duo- dure duro duru duur dxdr dxed dxef dxfe dxfm dxfx dxme dxmf dxmr dxmx dxom dxrd dxre dxrf dxrm dxrr dxrx dxue dxum dxur dxxr dxxx edde eddm eddo ede- edem eder edex edfu edme edod edom edou edrm edru edur eede eedu eeee eefe eemo eero efeo efmd efor emer emeu emex emme emmu emod emor emre eode eore eoux er-x erde erdf ered erem erer erfx erme ermo erod eroe eroo erre erro erum erur eude eudm euer eur- eure euro exed exer exfo exmr exo- exod exor exrx exum fdom fede feed feem feer fefe feff fefo feme femm feod feof ferd fere ferm fero ferr feru feud feux ffee ffff ffrr fmod fode foed foer fofo fome fomo food foof foom for- ford fore form foro forr foud four foxe foxx fred free frem freo frex froe from frou frue frum fudd fude fuff fufu fume fumo fuor fur- fure furm furo furr fxdd mddm mdef mdme mdmf mdmx mdud medd mede medo medu meed meef meem meer mefe meff mefo meme memo memr memu memx meor meou mer- merd mere merf merm mero meru meum meux mexx mfor mfou mmdf mmdx mmfd mmff mmmd mmmm mmod mmor mmrf mmxx modd mode modo modu modx moed moef moex mofe moff mofo mofu mome momo momu mood mooe moor mord more morf moro moru moud moue mouf mour moux moxe moxo mrdd mred mree mrmd mrud mudd mude mudu mued muee muff mufu mume mumm mumo mumu murd mure muro murr muru muxe muxu o-eo oddd oded odem odeo oder odex odmr odom odoo odor odou odum odur oedo oeme oere oerm oeuf ofdr ofem ofer off- offe offo offr offu ofme ofor ofre omed omee omeo omer omex omo- omoe omoo omor omox omre omro omuo ooer ooff oome oooo oord oore orde ordo ordu ore- ored orem oreo orer orex orfe orff orfu orme ormo oro- oroe orof orom oror orro orum oude oued ouer oufe ouff oume our- oure ouro ouu- oxer oxo- oxof oxox oxud oxuf oxxo rder redd rede redo redr redu redx reed reef reem refd refe reff refr refu reme remo reod reof reou rerd rere rero reru reue reuf reuu reux rexx rfef rfem rmxd rodd rode rodo roed roer rofe roff rofo romd rome romm romo rood roof room roor roox rore roro roru roud roue rouf roum roux roxo rred rrrr rrum rudd rude rudo rued ruer rufe ruff rufo rume rumm rumo rurd rure ruro ruru ruud udem uder udoo udox ufer uffe umde umer umff ummo umoe umor uofm uofo uomo uor- uore urde urdu ure- ured urex urfe urff uro- urom uroo urox urre urum urur uuuu uxem uxor uxue x-ed xdmf xdmx xdxf xeer xefe xeme xemu xer- xero xexe xfer xmdf xmdr xome xoom xoro xoxo xrod xumo xuxu xxxo xxxx

-form d-mer d-rod