-er ddd dde ddm ddo ddr ddu ddz de- ded dee dem deo der deu dez dmd dme dmm dmo dmr dmu dmz dod doe dom doo dor dou doz drd dre drm dro drr dru drz dud due dum duo dur duz dzd dze dzo dzr dzu ed- edd ede edm edo edr edu eed eee eem eeo eer em- emd eme emm emo emr emu eo- eod eoe eom eoo eor eou erd ere erm ero err eru erz eu- eud eue eur eze ezo ezr ezz m-o m-r mdd mde mdm mdo mdr mdu mdz med mee mem meo mer meu mez mmd mme mmm mmo mmr mmu mmz mod moe mom moo mor mou moz mrd mre mrm mro mrr mru mrz mud mue mum mur muu mzm odd ode odm odo odr odu oed oee oem oeo oer om- omd ome omm omo omr omu omz oo- ood oom ooo oor or- ord ore orm oro orr oru orz ou- oud oue oum ouo our oze ozm ozo ozu ozz rdd rde rdm rdo rdr rdu re- red ree rem reo rer reu rez rmd rme rmm rmo rmr rod roe rom roo ror rou roz rrd rrm rrr rru rud rue rum ruo rur ruu ruz rze rzm rzo udd ude udm udo udr udu ued uee uem uer um- umd ume umm umo umr umu uod uoe uom uoo uor ur- urd ure urm uro urr uru urz uue uum uur uuu uzo uzu zdm zed zee zem zeo zer zez zmd zmm zo- zod zoe zom zoo zor zou zro zud zum zur zuz zzr zzz