-er -ol ddd dde ddl ddo ddp ddr dds de- ded dee del deo dep der des dev dl- dld dle dll dlo dlp dlr dls dlv dod doe dol doo dop dor dos dov dpd dpe dpl dpo dpp dpr dps dpv drd dre drl dro drp drr drs drv dsd dse dsl dso dsp dsr dss dsv dvd dve dvl dvp dvr dvs ed- edd ede edl edo edp edr eds eed eee eel eeo eep eer ees eev eld ele ell elo elp elr els elv eo- eod eoe eol eoo eop eor eos ep- epd epe epl epo epp epr eps erd ere erl ero erp err ers erv es- esd ese esl eso esp esr ess esv evd eve evl evo evp evr evs evv l-p ldd lde ldl ldo ldp ldr lds ldv led lee lel leo lep ler les lev lld lle lll llo llp llr lls llv lod loe lol loo lop lor los lov lpd lpe lpl lpo lpp lpr lps lpv lrd lro lrp lrr lrs lrv lsd lse lsl lso lsp lsr lss lsv lvd lve lvl lvp lvr lvs lvv odd ode odl odo odp odr ods odv oed oee oel oeo oep oer oes old ole oll olo olp ols oo- ood ool ooo oop oor oos oov op- opd ope opl opo opp opr ops opv or- ord ore orl oro orp orr ors orv os- osd ose osl oso osp osr oss osv ov- ovd ove ovl ovo ovp ovs ovv p-p pdd pde pdl pdo pdp pdr pds pdv ped pee pel peo pep per pes pev pld ple pll plo plp plr pls plv pod poe pol poo pop por pos pov ppd ppe ppl ppo ppp ppr pps ppv prd pre prl pro prp prr prs prv ps- psd pse psl pso psp psr pss psv pvd pve pvl pvo pvp pvr pvs pvv rdd rde rdl rdo rdp rdr rds rdv re- red ree rel reo rep rer res rev rld rle rll rlo rlp rlr rls rod roe rol roo rop ror ros rov rpd rpe rpl rpo rpp rpr rps rpv rrd rrl rrp rrr rrs rsd rse rsl rso rsp rsr rss rsv rvd rve rvl rvo rvp rvr rvs rvv sdd sde sdl sdo sdp sdr sds sdv se- sed see sel seo sep ser ses sev sld sle sll slo slp slr sls slv sod soe sol soo sop sor sos sov spd spe spl spo spp spr sps spv sr- srd sre srl sro srp srr srs srv ss- ssd sse ssl sso ssp ssr sss ssv svd sve svl svo svp svr svs svv v-e vdd vde vdl vdo vdp vdr vds vdv ved vee vel veo vep ver ves vl- vld vle vll vlo vlp vls vlv vod voe vol voo vop vor vos vov vpd vpe vpl vpo vpp vpr vps vrd vre vrp vrr vrs vsd vse vsl vso vsp vsr vss vsv vvo vvr vvs vvv