-er eee eef eeg eem eeo eer ees eet ef- efe eff efg efm efo efr efs eft ege egf egg egm ego egr egs egt em- eme emf emg emm emo emr ems emt eo- eoe eof eog eom eoo eor eos eot ere erf erg erm ero err ers ert es- ese esf esg esm eso esr ess est ete etf etg etm eto etr ets ett fee fef feg fem feo fer fes fet ffe fff ffg ffm ffo ffr ffs fft fge fgf fgg fgm fgr fgs fgt fme fmf fmg fmm fmo fmr fms fmt foe fof fog fom foo for fos fot fre frf frg frm fro frr frs frt fse fsf fsg fsm fso fsr fss fst fte ftf ftg ftm fto ftr fts ftt ge- gee gef geg gem geo ger ges get gfe gff gfm gfo gfr gfs gft ggg ggm ggo ggr ggs ggt gme gmf gmg gmm gmo gmr gms gmt goe gof gog gom goo gor gos got gre grf grg grm gro grr grs grt gse gsf gsg gsm gso gsr gss gst gte gtf gtg gtm gto gtr gts gtt m-f m-o m-r mee mef meg mem meo mer mes met mfe mff mfg mfm mfo mfr mfs mft mge mgf mgm mgo mgr mgs mgt mme mmf mmg mmm mmo mmr mms mmt moe mof mog mom moo mor mos mot mre mrf mrg mrm mro mrr mrs mrt mse msf msg msm mso msr mss mst mte mtf mtg mtm mto mtr mts mtt oee oef oeg oem oeo oer oes oet of- ofe off ofg ofm ofo ofr ofs oft oge ogf ogg ogo ogs ogt om- ome omf omg omm omo omr oms omt oo- oof oog oom ooo oor oos oot or- ore orf org orm oro orr ors ort os- ose osf osg osm oso osr oss ost ot- ote otf otg otm oto otr ots ott re- ree ref reg rem reo rer res ret rfe rff rfg rfm rfo rfr rfs rft rge rgf rgg rgo rgr rgs rgt rme rmf rmg rmm rmo rmr rms rmt roe rof rog rom roo ror ros rot rrf rrg rrm rrr rrs rrt rse rsf rsg rsm rso rsr rss rst rte rtf rtg rtm rto rtr rts rtt se- see sef seg sem seo ser ses set sfe sff sfg sfm sfo sfr sfs sft sge sgf sgg sgm sgo sgr sgs sgt sme smf smg smm smo smr sms smt soe sof sog som soo sor sos sot sr- sre srf srg srm sro srr srs srt ss- sse ssf ssg ssm sso ssr sss sst ste stf stg stm sto str sts stt te- tee tef teg tem teo ter tes tet tfe tff tfg tfm tfo tfr tfs tft tge tgf tgg tgm tgo tgr tgs tgt tme tmf tmg tmm tmo tmr tms tmt to- toe tof tog tom too tor tos tot tre trf trg trm tro trr trs trt tse tsf tsg tsm tso tsr tss tst tte ttf ttg ttm tto ttr tts ttt