-er -ol eee eef eel eem eeo eer ees eet ef- efe eff efl efm efo efr efs eft ele elf ell elm elo elr els elt em- eme emf eml emm emo emr ems emt eo- eoe eof eol eom eoo eor eos eot ere erf erl erm ero err ers ert es- ese esf esl esm eso esr ess est ete etf etl etm eto etr ets ett fee fef fel fem feo fer fes fet ffe fff ffl ffm ffo ffr ffs fft fle flf fll flm flo flr fls flt fme fmf fml fmm fmo fmr fms fmt foe fof fol fom foo for fos fot fre frf frl frm fro frr frs frt fse fsf fsl fsm fso fsr fss fst fte ftf ftl ftm fto ftr fts ftt lee lef lel lem leo ler les let lfe lff lfl lfm lfo lfr lfs lft lle llf lll llm llo llr lls llt lme lmf lml lmm lmo lmr lms lmt loe lof lol lom loo lor los lot lrf lrm lro lrr lrs lrt lse lsf lsl lsm lso lsr lss lst lte ltf ltl ltm lto ltr lts ltt m-f m-o m-r mee mef mel mem meo mer mes met mfe mff mfl mfm mfo mfr mfs mft mle mlf mll mlm mlo mlr mls mlt mme mmf mml mmm mmo mmr mms mmt moe mof mol mom moo mor mos mot mre mrf mrl mrm mro mrr mrs mrt mse msf msl msm mso msr mss mst mte mtf mtl mtm mto mtr mts mtt oee oef oel oem oeo oer oes oet of- ofe off ofl ofm ofo ofr ofs oft ole olf oll olm olo ols olt om- ome omf oml omm omo omr oms omt oo- oof ool oom ooo oor oos oot or- ore orf orl orm oro orr ors ort os- ose osf osl osm oso osr oss ost ot- ote otf otl otm oto otr ots ott re- ree ref rel rem reo rer res ret rfe rff rfl rfm rfo rfr rfs rft rle rlf rll rlm rlo rlr rls rlt rme rmf rml rmm rmo rmr rms rmt roe rof rol rom roo ror ros rot rrf rrl rrm rrr rrs rrt rse rsf rsl rsm rso rsr rss rst rte rtf rtl rtm rto rtr rts rtt se- see sef sel sem seo ser ses set sfe sff sfl sfm sfo sfr sfs sft sle slf sll slm slo slr sls slt sme smf sml smm smo smr sms smt soe sof sol som soo sor sos sot sr- sre srf srl srm sro srr srs srt ss- sse ssf ssl ssm sso ssr sss sst ste stf stl stm sto str sts stt te- tee tef tel tem teo ter tes tet tfe tff tfl tfm tfo tfr tfs tft tle tlf tll tlm tlo tlr tls tlt tme tmf tml tmm tmo tmr tms tmt to- toe tof tol tom too tor tos tot tre trf trl trm tro trr trs trt tse tsf tsl tsm tso tsr tss tst tte ttf ttl ttm tto ttr tts ttt