-er ddd dde ddi ddm ddo ddr de- ded dee dei dem deo der dev di- did die dii dim dio dir div dmd dme dmi dmm dmo dmr dmv dod doe doi dom doo dor dov drd dre dri drm dro drr drv dvd dve dvi dvm dvr ed- edd ede edi edm edo edr eed eee eem eeo eer eev eid eie eii eim eio eir eiv em- emd eme emi emm emo emr emv eo- eod eoe eoi eom eoo eor erd ere eri erm ero err erv evd eve evi evm evo evr evv i-d i-v idd ide idi idm ido idr idv ie- ied iee iei iem ier iev iid iie iii iim iio iir im- imd ime imi imm imo imv io- iod ioe ioi iom ioo ior iov ir- ird ire iri irm iro irr irv ivd ive ivi ivo ivr ivv m-o m-r m-v mdd mde mdi mdm mdo mdr mdv med mee mei mem meo mer mev mi- mid mie mii mim mio mir miv mmd mme mmi mmm mmo mmr mmv mod moe moi mom moo mor mov mrd mre mri mrm mro mrr mrv mvd mve mvi mvm mvo mvr mvv o-i odd ode odi odm odo odr odv oed oee oei oem oeo oer oid oie oii oim oio oir oiv om- omd ome omi omm omo omr omv oo- ood ooi oom ooo oor oov or- ord ore ori orm oro orr orv ov- ovd ove ovi ovo ovv rdd rde rdi rdm rdo rdr rdv re- red ree rei rem reo rer rev rid rie rii rim rio rir riv rmd rme rmi rmm rmo rmr rmv rod roe roi rom roo ror rov rrd rri rrm rrr rvd rve rvi rvm rvo rvr rvv v-e vdd vde vdi vdm vdo vdr vdv ved vee vei vem veo ver vi- vid vie vii vim vio vir viv vm- vmd vmi vmm vmo vmr vod voe voi vom voo vor vov vrd vre vri vrm vrr vvi vvm vvo vvr vvv