-er eee eef eem een eep eer ees eet ef- efe eff efm efp efr efs eft em- eme emf emm emn emp emr ems emt en- ene enf enm enn enp enr ens ent ep- epe epf epm epn epp epr eps ept ere erf erm ern erp err ers ert es- ese esf esm esn esp esr ess est ete etf etm etn etp etr ets ett fee fef fem fen fep fer fes fet ffe fff ffm ffn ffp ffr ffs fft fme fmf fmm fmn fmp fmr fms fmt fne fnf fnm fnn fnp fnr fns fnt fpe fpm fpn fpp fpr fps fpt fre frf frm frn frp frr frs frt fse fsf fsm fsn fsp fsr fss fst fte ftf ftm ftn ftp ftr fts ftt m-f m-r mee mef mem men mep mer mes met mfe mff mfm mfn mfp mfr mfs mft mme mmf mmm mmn mmp mmr mms mmt mne mnf mnm mnn mnp mnr mns mnt mpe mpf mpm mpn mpp mpr mps mpt mre mrf mrm mrn mrp mrr mrs mrt mse msf msm msn msp msr mss mst mte mtf mtm mtn mtp mtr mts mtt ne- nee nef nem nen nep ner nes net nfe nff nfn nfp nfr nfs nft nme nmm nmn nmp nmr nms nmt nne nnf nnm nnn nnp nns nnt npe npf npm npn npp npr nps npt nre nrf nrm nrn nrp nrr nrs nrt nse nsf nsm nsn nsp nsr nss nst nte ntf ntm ntn ntp ntr nts ntt p-p pee pef pem pen pep per pes pet pfe pff pfm pfn pfp pfr pfs pft pme pmf pmm pmn pmp pmr pms pmt pn- pne pnf pnm pnn pnp pnr pns pnt ppe ppf ppm ppn ppp ppr pps ppt pre prf prm prn prp prr prs prt ps- pse psf psm psn psp psr pss pst pt- pte ptf ptm ptn ptp ptr pts ptt re- ree ref rem ren rep rer res ret rfe rff rfm rfn rfp rfr rfs rft rme rmf rmm rmn rmp rmr rms rmt rnm rnn rnp rnr rns rnt rpe rpf rpm rpn rpp rpr rps rpt rrf rrm rrn rrp rrr rrs rrt rse rsf rsm rsn rsp rsr rss rst rte rtf rtm rtn rtp rtr rts rtt se- see sef sem sen sep ser ses set sfe sff sfm sfn sfp sfr sfs sft sme smf smm smn smp smr sms smt sne snf snm snn snp snr sns snt spe spf spm spn spp spr sps spt sr- sre srf srm srn srp srr srs srt ss- sse ssf ssm ssn ssp ssr sss sst ste stf stm stn stp str sts stt te- tee tef tem ten tep ter tes tet tfe tff tfm tfn tfp tfr tfs tft tme tmf tmm tmn tmp tmr tms tmt tne tnf tnm tnn tnp tnr tns tnt tpe tpf tpm tpn tpp tpr tps tpt tre trf trm trn trp trr trs trt tse tsf tsm tsn tsp tsr tss tst tte ttf ttm ttn ttp ttr tts ttt