-er -ol ddd dde ddf ddl ddm ddo ddr dds ddt de- ded dee def del dem deo der des det dfd dfe dff dfl dfm dfo dfr dfs dft dl- dld dle dlf dll dlm dlo dlr dls dlt dmd dme dmf dml dmm dmo dmr dms dmt dod doe dof dol dom doo dor dos dot drd dre drl drm dro drr drs drt dsd dse dsf dsl dsm dso dsr dss dst dtd dte dtf dtl dtm dto dtr dts dtt ed- edd ede edf edl edm edo edr eds edt eed eee eef eel eem eeo eer ees eet ef- efd efe eff efl efm efo efr efs eft eld ele elf ell elm elo elr els elt em- emd eme emf eml emm emo emr ems emt eo- eod eoe eof eol eom eoo eor eos eot erd ere erf erl erm ero err ers ert es- esd ese esf esl esm eso esr ess est etd ete etf etl etm eto etr ets ett fdd fde fdf fdl fdm fdo fdr fds fdt fed fee fef fel fem feo fer fes fet ffd ffe fff ffl ffm ffo ffr ffs fft fld fle flf fll flm flo flr fls flt fmd fme fmf fml fmm fmo fmr fms fmt foe fof fol fom foo for fos fot frd fre frf frl frm fro frr frs frt fsd fse fsf fsl fsm fso fsr fss fst ftd fte ftf ftl ftm fto ftr fts ftt ldd lde ldf ldl ldm ldo ldr lds ldt led lee lef lel lem leo ler les let lfd lfe lff lfl lfm lfo lfr lfs lft lld lle llf lll llm llo llr lls llt lmd lme lmf lml lmm lmo lmr lms lmt lod loe lof lol lom loo lor los lot lrd lrf lrm lro lrr lrs lrt lsd lse lsf lsl lsm lso lsr lss lst ltd lte ltf ltl ltm lto ltr lts ltt m-f m-o m-r mdd mde mdf mdl mdm mdo mdr mds mdt med mee mef mel mem meo mer mes met mfd mfe mff mfl mfm mfo mfr mfs mft mld mle mlf mll mlm mlo mlr mls mlt mmd mme mmf mml mmm mmo mmr mms mmt mod moe mof mol mom moo mor mos mot mrd mre mrf mrl mrm mro mrr mrs mrt msd mse msf msl msm mso msr mss mst mtd mte mtf mtl mtm mto mtr mts mtt odd ode odf odl odm odo odr ods odt oed oee oef oel oem oeo oer oes oet of- ofd ofe off ofl ofm ofo ofr ofs oft old ole olf oll olm olo ols olt om- omd ome omf oml omm omo omr oms omt oo- ood oof ool oom ooo oor oos oot or- ord ore orf orl orm oro orr ors ort os- osd ose osf osl osm oso osr oss ost ot- otd ote otf otl otm oto otr ots ott rdd rde rdf rdl rdm rdo rdr rds rdt re- red ree ref rel rem reo rer res ret rfd rfe rff rfl rfm rfo rfr rfs rft rld rle rlf rll rlm rlo rlr rls rlt rmd rme rmf rml rmm rmo rmr rms rmt rod roe rof rol rom roo ror ros rot rrd rrf rrl rrm rrr rrs rrt rsd rse rsf rsl rsm rso rsr rss rst rtd rte rtf rtl rtm rto rtr rts rtt sdd sde sdf sdl sdm sdo sdr sds sdt se- sed see sef sel sem seo ser ses set sfd sfe sff sfl sfm sfo sfr sfs sft sld sle slf sll slm slo slr sls slt smd sme smf sml smm smo smr sms smt sod soe sof sol som soo sor sos sot sr- srd sre srf srl srm sro srr srs srt ss- ssd sse ssf ssl ssm sso ssr sss sst std ste stf stl stm sto str sts stt tdd tde tdf tdl tdm tdo tdr tds tdt te- ted tee tef tel tem teo ter tes tet tfd tfe tff tfl tfm tfo tfr tfs tft tld tle tlf tll tlm tlo tlr tls tlt tmd tme tmf tml tmm tmo tmr tms tmt to- tod toe tof tol tom too tor tos tot trd tre trf trl trm tro trr trs trt tsd tse tsf tsl tsm tso tsr tss tst ttd tte ttf ttl ttm tto ttr tts ttt