-er -ol ddd dde ddf ddl ddo ddr dds de- ded dee def del deo der des dev dfd dfe dff dfl dfo dfr dfs dfv dl- dld dle dlf dll dlo dlr dls dlv dod doe dof dol doo dor dos dov drd dre drl dro drr drs drv dsd dse dsf dsl dso dsr dss dsv dvd dve dvl dvr dvs ed- edd ede edf edl edo edr eds eed eee eef eel eeo eer ees eev ef- efd efe eff efl efo efr efs eld ele elf ell elo elr els elv eo- eod eoe eof eol eoo eor eos erd ere erf erl ero err ers erv es- esd ese esf esl eso esr ess esv evd eve evf evl evo evr evs evv fdd fde fdf fdl fdo fdr fds fed fee fef fel feo fer fes fev ffd ffe fff ffl ffo ffr ffs ffv fld fle flf fll flo flr fls foe fof fol foo for fos frd fre frf frl fro frr frs fsd fse fsf fsl fso fsr fss fsv fvd ldd lde ldf ldl ldo ldr lds ldv led lee lef lel leo ler les lev lfd lfe lff lfl lfo lfr lfs lld lle llf lll llo llr lls llv lod loe lof lol loo lor los lov lrd lrf lro lrr lrs lrv lsd lse lsf lsl lso lsr lss lsv lvd lve lvf lvl lvr lvs lvv odd ode odf odl odo odr ods odv oed oee oef oel oeo oer oes of- ofd ofe off ofl ofo ofr ofs ofv old ole olf oll olo ols oo- ood oof ool ooo oor oos oov or- ord ore orf orl oro orr ors orv os- osd ose osf osl oso osr oss osv ov- ovd ove ovf ovl ovo ovs ovv rdd rde rdf rdl rdo rdr rds rdv re- red ree ref rel reo rer res rev rfd rfe rff rfl rfo rfr rfs rfv rld rle rlf rll rlo rlr rls rod roe rof rol roo ror ros rov rrd rrf rrl rrr rrs rsd rse rsf rsl rso rsr rss rsv rvd rve rvf rvl rvo rvr rvs rvv sdd sde sdf sdl sdo sdr sds sdv se- sed see sef sel seo ser ses sev sfd sfe sff sfl sfo sfr sfs sfv sld sle slf sll slo slr sls slv sod soe sof sol soo sor sos sov sr- srd sre srf srl sro srr srs srv ss- ssd sse ssf ssl sso ssr sss ssv svd sve svf svl svo svr svs svv v-e vdd vde vdf vdl vdo vdr vds vdv ved vee vef vel veo ver ves vfd vff vfl vfr vfs vfv vl- vld vle vlf vll vlo vls vlv vod voe vof vol voo vor vos vov vrd vre vrf vrr vrs vsd vse vsf vsl vso vsr vss vsv vvo vvr vvs vvv