-er -ol ddd dde ddk ddl ddm ddo ddr dds ddt de- ded dee dek del dem deo der des det dke dkk dkl dkm dko dkr dks dkt dl- dld dle dlk dll dlm dlo dlr dls dlt dmd dme dmk dml dmm dmo dmr dms dmt dod doe dok dol dom doo dor dos dot drd dre drk drl drm dro drr drs drt dsd dse dsk dsl dsm dso dsr dss dst dtd dte dtk dtl dtm dto dtr dts dtt ed- edd ede edk edl edm edo edr eds edt eed eee eek eel eem eeo eer ees eet ekd eke ekl eko ekr eks ekt eld ele elk ell elm elo elr els elt em- emd eme emk eml emm emo emr ems emt eo- eod eoe eok eol eom eoo eor eos eot erd ere erk erl erm ero err ers ert es- esd ese esk esl esm eso esr ess est etd ete etk etl etm eto etr ets ett k-t kde kdk kdl kdm kdo kdr kds kdt ke- ked kee kek kel kem keo ker kes ket kke kkk kkl kkm kkr kks kkt kl- kld klm klo klr kls klt kmd kme kmk kml kmm kmo kms kmt kod koe kok kol kom koo kor kos kot krd krk krl kro krr krs krt ksd kse ksk ksl ksm kso ksr kss kst kte ktk ktl ktm kto ktr kts ktt ldd lde ldk ldl ldm ldo ldr lds ldt led lee lek lel lem leo ler les let lkl lkr lks lkt lld lle llk lll llm llo llr lls llt lmd lme lmk lml lmm lmo lmr lms lmt lod loe lok lol lom loo lor los lot lrd lrk lrm lro lrr lrs lrt lsd lse lsk lsl lsm lso lsr lss lst ltd lte ltk ltl ltm lto ltr lts ltt m-o m-r mdd mde mdk mdl mdm mdo mdr mds mdt med mee mek mel mem meo mer mes met mkd mke mkk mkl mkm mko mkr mks mkt mld mle mlk mll mlm mlo mlr mls mlt mmd mme mmk mml mmm mmo mmr mms mmt mod moe mok mol mom moo mor mos mot mrd mre mrk mrl mrm mro mrr mrs mrt msd mse msk msl msm mso msr mss mst mtd mte mtk mtl mtm mto mtr mts mtt odd ode odl odm odo odr ods odt oed oee oel oem oeo oer oes oet okd oke okk okl oko okr oks old ole olk oll olm olo ols olt om- omd ome oml omm omo omr oms omt oo- ood ook ool oom ooo oor oos oot or- ord ore ork orl orm oro orr ors ort os- osd ose osk osl osm oso osr oss ost ot- otd ote otk otl otm oto otr ots ott rdd rde rdl rdm rdo rdr rds rdt re- red ree rek rel rem reo rer res ret rke rkk rkm rko rks rkt rld rle rll rlm rlo rlr rls rlt rmd rme rml rmm rmo rmr rms rmt rod roe rok rol rom roo ror ros rot rrd rrk rrl rrm rrr rrs rrt rsd rse rsk rsl rsm rso rsr rss rst rtd rte rtk rtl rtm rto rtr rts rtt sdd sde sdk sdl sdm sdo sdr sds sdt se- sed see sek sel sem seo ser ses set sk- skd ske skk skl skm sko skr sks skt sld sle slk sll slm slo slr sls slt smd sme smk sml smm smo smr sms smt sod soe sok sol som soo sor sos sot sr- srd sre srk srl srm sro srr srs srt ss- ssd sse ssk ssl ssm sso ssr sss sst std ste stk stl stm sto str sts stt tdd tde tdk tdl tdm tdo tdr tds tdt te- ted tee tek tel tem teo ter tes tet tke tkk tkl tkm tko tkr tks tkt tld tle tlk tll tlm tlo tlr tls tlt tmd tme tmk tml tmm tmo tmr tms tmt to- tod toe tok tol tom too tor tos tot trd tre trk trl trm tro trr trs trt tsd tse tsk tsl tsm tso tsr tss tst ttd tte ttk ttl ttm tto ttr tts ttt