-er ddd dde ddf ddm ddo ddr dds ddt de- ded dee def dem deo der des det dev dfd dfe dff dfm dfo dfr dfs dft dfv dmd dme dmf dmm dmo dmr dms dmt dmv dod doe dof dom doo dor dos dot dov drd dre drm dro drr drs drt drv dsd dse dsf dsm dso dsr dss dst dsv dtd dte dtf dtm dto dtr dts dtt dtv dvd dve dvm dvr dvs dvt ed- edd ede edf edm edo edr eds edt eed eee eef eem eeo eer ees eet eev ef- efd efe eff efm efo efr efs eft em- emd eme emf emm emo emr ems emt emv eo- eod eoe eof eom eoo eor eos eot erd ere erf erm ero err ers ert erv es- esd ese esf esm eso esr ess est esv etd ete etf etm eto etr ets ett etv evd eve evf evm evo evr evs evt evv fdd fde fdf fdm fdo fdr fds fdt fed fee fef fem feo fer fes fet fev ffd ffe fff ffm ffo ffr ffs fft ffv fmd fme fmf fmm fmo fmr fms fmt fmv foe fof fom foo for fos fot frd fre frf frm fro frr frs frt fsd fse fsf fsm fso fsr fss fst fsv ftd fte ftf ftm fto ftr fts ftt ftv fvd fvt m-f m-o m-r m-v mdd mde mdf mdm mdo mdr mds mdt mdv med mee mef mem meo mer mes met mev mfd mfe mff mfm mfo mfr mfs mft mfv mmd mme mmf mmm mmo mmr mms mmt mmv mod moe mof mom moo mor mos mot mov mrd mre mrf mrm mro mrr mrs mrt mrv msd mse msf msm mso msr mss mst msv mtd mte mtf mtm mto mtr mts mtt mtv mvd mve mvf mvm mvo mvr mvs mvt mvv odd ode odf odm odo odr ods odt odv oed oee oef oem oeo oer oes oet of- ofd ofe off ofm ofo ofr ofs oft ofv om- omd ome omf omm omo omr oms omt omv oo- ood oof oom ooo oor oos oot oov or- ord ore orf orm oro orr ors ort orv os- osd ose osf osm oso osr oss ost osv ot- otd ote otf otm oto otr ots ott otv ov- ovd ove ovf ovo ovs ovv rdd rde rdf rdm rdo rdr rds rdt rdv re- red ree ref rem reo rer res ret rev rfd rfe rff rfm rfo rfr rfs rft rfv rmd rme rmf rmm rmo rmr rms rmt rmv rod roe rof rom roo ror ros rot rov rrd rrf rrm rrr rrs rrt rsd rse rsf rsm rso rsr rss rst rsv rtd rte rtf rtm rto rtr rts rtt rtv rvd rve rvf rvm rvo rvr rvs rvt rvv sdd sde sdf sdm sdo sdr sds sdt sdv se- sed see sef sem seo ser ses set sev sfd sfe sff sfm sfo sfr sfs sft sfv smd sme smf smm smo smr sms smt smv sod soe sof som soo sor sos sot sov sr- srd sre srf srm sro srr srs srt srv ss- ssd sse ssf ssm sso ssr sss sst ssv std ste stf stm sto str sts stt stv svd sve svf svm svo svr svs svt svv tdd tde tdf tdm tdo tdr tds tdt tdv te- ted tee tef tem teo ter tes tet tev tfd tfe tff tfm tfo tfr tfs tft tmd tme tmf tmm tmo tmr tms tmt tmv to- tod toe tof tom too tor tos tot tov trd tre trf trm tro trr trs trt trv tsd tse tsf tsm tso tsr tss tst tsv ttd tte ttf ttm tto ttr tts ttt ttv tvd tve tvf tvm tvo tvr tvs tvt v-e vdd vde vdf vdm vdo vdr vds vdt vdv ved vee vef vem veo ver ves vet vfd vff vfm vfr vfs vft vfv vm- vmd vmf vmm vmo vmr vmt vod voe vof vom voo vor vos vot vov vrd vre vrf vrm vrr vrs vrt vsd vse vsf vsm vso vsr vss vst vsv vte vtm vto vtr vts vtt vtv vvm vvo vvr vvs vvt vvv