-er -ol ddd dde ddk ddl ddo ddp ddr dds ddt de- ded dee dek del deo dep der des det dke dkk dkl dko dkp dkr dks dkt dl- dld dle dlk dll dlo dlp dlr dls dlt dod doe dok dol doo dop dor dos dot dpd dpe dpk dpl dpo dpp dpr dps dpt drd dre drk drl dro drp drr drs drt dsd dse dsk dsl dso dsp dsr dss dst dtd dte dtk dtl dto dtp dtr dts dtt ed- edd ede edk edl edo edp edr eds edt eed eee eek eel eeo eep eer ees eet ekd eke ekl eko ekp ekr eks ekt eld ele elk ell elo elp elr els elt eo- eod eoe eok eol eoo eop eor eos eot ep- epd epe epl epo epp epr eps ept erd ere erk erl ero erp err ers ert es- esd ese esk esl eso esp esr ess est etd ete etk etl eto etp etr ets ett k-t kde kdk kdl kdo kdp kdr kds kdt ke- ked kee kek kel keo kep ker kes ket kke kkk kkl kkp kkr kks kkt kl- kld klo klr kls klt kod koe kok kol koo kop kor kos kot kpd kpe kpk kpl kpo kpp kpr kps kpt krd krk krl kro krp krr krs krt ksd kse ksk ksl kso ksp ksr kss kst kte ktk ktl kto ktp ktr kts ktt l-p ldd lde ldk ldl ldo ldp ldr lds ldt led lee lek lel leo lep ler les let lkl lkp lkr lks lkt lld lle llk lll llo llp llr lls llt lod loe lok lol loo lop lor los lot lpd lpe lpk lpl lpo lpp lpr lps lpt lrd lrk lro lrp lrr lrs lrt lsd lse lsk lsl lso lsp lsr lss lst ltd lte ltk ltl lto ltp ltr lts ltt odd ode odl odo odp odr ods odt oed oee oel oeo oep oer oes oet okd oke okk okl oko okp okr oks old ole olk oll olo olp ols olt oo- ood ook ool ooo oop oor oos oot op- opd ope opk opl opo opp opr ops opt or- ord ore ork orl oro orp orr ors ort os- osd ose osk osl oso osp osr oss ost ot- otd ote otk otl oto otp otr ots ott p-p pdd pde pdk pdl pdo pdp pdr pds pdt ped pee pek pel peo pep per pes pet pkd pke pkl pko pkp pkr pks pkt pld ple plk pll plo plp plr pls plt pod poe pok pol poo pop por pos pot ppd ppe ppk ppl ppo ppp ppr pps ppt prd pre prk prl pro prp prr prs prt ps- psd pse psk psl pso psp psr pss pst pt- ptd pte ptk ptl pto ptp ptr pts ptt rdd rde rdl rdo rdp rdr rds rdt re- red ree rek rel reo rep rer res ret rke rkk rko rkp rks rkt rld rle rll rlo rlp rlr rls rlt rod roe rok rol roo rop ror ros rot rpd rpe rpk rpl rpo rpp rpr rps rpt rrd rrk rrl rrp rrr rrs rrt rsd rse rsk rsl rso rsp rsr rss rst rtd rte rtk rtl rto rtp rtr rts rtt sdd sde sdk sdl sdo sdp sdr sds sdt se- sed see sek sel seo sep ser ses set sk- skd ske skk skl sko skp skr sks skt sld sle slk sll slo slp slr sls slt sod soe sok sol soo sop sor sos sot spd spe spk spl spo spp spr sps spt sr- srd sre srk srl sro srp srr srs srt ss- ssd sse ssk ssl sso ssp ssr sss sst std ste stk stl sto stp str sts stt tdd tde tdk tdl tdo tdp tdr tds tdt te- ted tee tek tel teo tep ter tes tet tke tkk tkl tko tkp tkr tks tkt tld tle tlk tll tlo tlp tlr tls tlt to- tod toe tok tol too top tor tos tot tpd tpe tpk tpl tpo tpp tpr tps tpt trd tre trk trl tro trp trr trs trt tsd tse tsk tsl tso tsp tsr tss tst ttd tte ttk ttl tto ttp ttr tts ttt