-er -ol ddd dde ddk ddl ddo ddp ddr dds de- ded dee dek del deo dep der des dke dkk dkl dko dkp dkr dks dl- dld dle dlk dll dlo dlp dlr dls dod doe dok dol doo dop dor dos dpd dpe dpk dpl dpo dpp dpr dps drd dre drk drl dro drp drr drs dsd dse dsk dsl dso dsp dsr dss ed- edd ede edk edl edo edp edr eds eed eee eek eel eeo eep eer ees ekd eke ekl eko ekp ekr eks eld ele elk ell elo elp elr els eo- eod eoe eok eol eoo eop eor eos ep- epd epe epl epo epp epr eps erd ere erk erl ero erp err ers es- esd ese esk esl eso esp esr ess kde kdk kdl kdo kdp kdr kds ke- ked kee kek kel keo kep ker kes kke kkk kkl kkp kkr kks kl- kld klo klr kls kod koe kok kol koo kop kor kos kpd kpe kpk kpl kpo kpp kpr kps krd krk krl kro krp krr krs ksd kse ksk ksl kso ksp ksr kss l-p ldd lde ldk ldl ldo ldp ldr lds led lee lek lel leo lep ler les lkl lkp lkr lks lld lle llk lll llo llp llr lls lod loe lok lol loo lop lor los lpd lpe lpk lpl lpo lpp lpr lps lrd lrk lro lrp lrr lrs lsd lse lsk lsl lso lsp lsr lss odd ode odl odo odp odr ods oed oee oel oeo oep oer oes okd oke okk okl oko okp okr oks old ole olk oll olo olp ols oo- ood ook ool ooo oop oor oos op- opd ope opk opl opo opp opr ops or- ord ore ork orl oro orp orr ors os- osd ose osk osl oso osp osr oss p-p pdd pde pdk pdl pdo pdp pdr pds ped pee pek pel peo pep per pes pkd pke pkl pko pkp pkr pks pld ple plk pll plo plp plr pls pod poe pok pol poo pop por pos ppd ppe ppk ppl ppo ppp ppr pps prd pre prk prl pro prp prr prs ps- psd pse psk psl pso psp psr pss rdd rde rdl rdo rdp rdr rds re- red ree rek rel reo rep rer res rke rkk rko rkp rks rld rle rll rlo rlp rlr rls rod roe rok rol roo rop ror ros rpd rpe rpk rpl rpo rpp rpr rps rrd rrk rrl rrp rrr rrs rsd rse rsk rsl rso rsp rsr rss sdd sde sdk sdl sdo sdp sdr sds se- sed see sek sel seo sep ser ses sk- skd ske skk skl sko skp skr sks sld sle slk sll slo slp slr sls sod soe sok sol soo sop sor sos spd spe spk spl spo spp spr sps sr- srd sre srk srl sro srp srr srs ss- ssd sse ssk ssl sso ssp ssr sss