-er -ol ddd dde ddl ddo ddp ddr dds ddx de- ded dee del deo dep der des dex dl- dld dle dll dlo dlp dlr dls dlx dod doe dol doo dop dor dos dox dpd dpe dpl dpo dpp dpr dps drd dre drl dro drp drr drs drx dsd dse dsl dso dsp dsr dss dsx dxd dxl dxo dxp dxr dxs dxx ed- edd ede edl edo edp edr eds edx eed eee eel eeo eep eer ees eex eld ele ell elo elp elr els elx eo- eod eoe eol eoo eop eor eos ep- epd epe epl epo epp epr eps epx erd ere erl ero erp err ers es- esd ese esl eso esp esr ess esx ex- exd exe exl exo exp exr exs exx l-p ldd lde ldl ldo ldp ldr lds led lee lel leo lep ler les lex lld lle lll llo llp llr lls lod loe lol loo lop lor los lox lpd lpe lpl lpo lpp lpr lps lpx lrd lro lrp lrr lrs lsd lse lsl lso lsp lsr lss lxd lxo lxr lxx odd ode odl odo odp odr ods oed oee oel oeo oep oer oes oex old ole oll olo olp ols oo- ood ool ooo oop oor oos oox op- opd ope opl opo opp opr ops opx or- ord ore orl oro orp orr ors orx os- osd ose osl oso osp osr oss osx ox- oxo oxx p-p pdd pde pdl pdo pdp pdr pds pdx ped pee pel peo pep per pes pex pld ple pll plo plp plr pls plx pod poe pol poo pop por pos pox ppd ppe ppl ppo ppp ppr pps ppx prd pre prl pro prp prr prs prx ps- psd pse psl pso psp psr pss psx pxe pxl pxr pxs rdd rde rdl rdo rdp rdr rds rdx re- red ree rel reo rep rer res rex rld rle rll rlo rlp rlr rls rod roe rol roo rop ror ros rox rpd rpe rpl rpo rpp rpr rps rpx rrd rrl rrp rrr rrs rsd rse rsl rso rsp rsr rss rsx rxp rxr rxs sdd sde sdl sdo sdp sdr sds se- sed see sel seo sep ser ses sex sld sle sll slo slp slr sls slx sod soe sol soo sop sor sos sox spd spe spl spo spp spr sps spx sr- srd sre srl sro srp srr srs srx ss- ssd sse ssl sso ssp ssr sss ssx sxl sxs xde xdr xds xed xee xel xep xer xes xex xld xlr xls xod xoo xop xor xos xox xpd xpe xpl xpo xpp xps xrd xrx xsl xsp xss xxl xxo xxp xxx