-er ddd dde ddf ddn ddo ddr de- ded dee def den deo der dev dfd dfe dff dfn dfo dfr dfv dnd dne dnf dnn dno dnr dod doe dof don doo dor dov drd dre drn dro drr drv dvd dve dvn dvr ed- edd ede edf edn edo edr eed eee eef een eeo eer eev ef- efd efe eff efo efr en- end ene enf enn eno enr env eo- eod eoe eof eon eoo eor erd ere erf ern ero err erv evd eve evf evn evo evr evv fdd fde fdf fdn fdo fdr fed fee fef fen feo fer fev ffd ffe fff ffn ffo ffr ffv fnd fne fnf fnn fnr fnv foe fof fon foo for frd fre frf frn fro frr fvd ndd nde ndf ndn ndo ndr ndv ne- ned nee nef nen neo ner nev nfd nfe nff nfn nfo nfr nfv nne nnf nnn nno nnv no- nod noe nof non noo nor nov nrd nre nrf nrn nro nrr nrv nvd nve nvn nvv odd ode odf odn odo odr odv oed oee oef oen oeo oer of- ofd ofe off ofn ofo ofr ofv on- ond one onf onn ono onr oo- ood oof oon ooo oor oov or- ord ore orf orn oro orr orv ov- ovd ove ovf ovo ovv rdd rde rdf rdn rdo rdr rdv re- red ree ref ren reo rer rev rfd rfe rff rfn rfo rfr rfv rnd rnn rno rnr rnv rod roe rof ron roo ror rov rrd rrf rrn rrr rvd rve rvf rvn rvo rvr rvv v-e vdd vde vdf vdo vdr vdv ved vee vef ven veo ver vfd vff vfn vfr vfv vn- vnd vnf vno vnr vnv vod voe vof von voo vor vov vrd vre vrf vrn vrr vvo vvr vvv