-er -ol ddd dde ddl ddm ddo ddp ddr dds de- ded dee del dem deo dep der des dl- dld dle dll dlm dlo dlp dlr dls dmd dme dml dmm dmo dmp dmr dms dod doe dol dom doo dop dor dos dpd dpe dpl dpm dpo dpp dpr dps drd dre drl drm dro drp drr drs dsd dse dsl dsm dso dsp dsr dss ed- edd ede edl edm edo edp edr eds eed eee eel eem eeo eep eer ees eld ele ell elm elo elp elr els em- emd eme eml emm emo emp emr ems eo- eod eoe eol eom eoo eop eor eos ep- epd epe epl epm epo epp epr eps erd ere erl erm ero erp err ers es- esd ese esl esm eso esp esr ess l-p ldd lde ldl ldm ldo ldp ldr lds led lee lel lem leo lep ler les lld lle lll llm llo llp llr lls lmd lme lml lmm lmo lmp lmr lms lod loe lol lom loo lop lor los lpd lpe lpl lpm lpo lpp lpr lps lrd lrm lro lrp lrr lrs lsd lse lsl lsm lso lsp lsr lss m-o m-r mdd mde mdl mdm mdo mdp mdr mds med mee mel mem meo mep mer mes mld mle mll mlm mlo mlp mlr mls mmd mme mml mmm mmo mmp mmr mms mod moe mol mom moo mop mor mos mpd mpe mpl mpm mpo mpp mpr mps mrd mre mrl mrm mro mrp mrr mrs msd mse msl msm mso msp msr mss odd ode odl odm odo odp odr ods oed oee oel oem oeo oep oer oes old ole oll olm olo olp ols om- omd ome oml omm omo omp omr oms oo- ood ool oom ooo oop oor oos op- opd ope opl opm opo opp opr ops or- ord ore orl orm oro orp orr ors os- osd ose osl osm oso osp osr oss p-p pdd pde pdl pdm pdo pdp pdr pds ped pee pel pem peo pep per pes pld ple pll plm plo plp plr pls pmd pme pml pmm pmo pmp pmr pms pod poe pol pom poo pop por pos ppd ppe ppl ppm ppo ppp ppr pps prd pre prl prm pro prp prr prs ps- psd pse psl psm pso psp psr pss rdd rde rdl rdm rdo rdp rdr rds re- red ree rel rem reo rep rer res rld rle rll rlm rlo rlp rlr rls rmd rme rml rmm rmo rmp rmr rms rod roe rol rom roo rop ror ros rpd rpe rpl rpm rpo rpp rpr rps rrd rrl rrm rrp rrr rrs rsd rse rsl rsm rso rsp rsr rss sdd sde sdl sdm sdo sdp sdr sds se- sed see sel sem seo sep ser ses sld sle sll slm slo slp slr sls smd sme sml smm smo smp smr sms sod soe sol som soo sop sor sos spd spe spl spm spo spp spr sps sr- srd sre srl srm sro srp srr srs ss- ssd sse ssl ssm sso ssp ssr sss