eee eel eem een eep ees eet ele ell elm eln elp els elt em- eme eml emm emn emp ems emt en- ene enl enm enn enp ens ent ep- epe epl epm epn epp eps ept es- ese esl esm esn esp ess est ete etl etm etn etp ets ett l-p lee lel lem len lep les let lle lll llm lln llp lls llt lme lml lmm lmn lmp lms lmt lne lnl lnm lnn lnp lns lnt lpe lpl lpm lpn lpp lps lpt lse lsl lsm lsn lsp lss lst lte ltl ltm ltp lts ltt mee mel mem men mep mes met mle mll mlm mln mlp mls mlt mme mml mmm mmn mmp mms mmt mne mnl mnm mnn mnp mns mnt mpe mpl mpm mpn mpp mps mpt mse msl msm msn msp mss mst mte mtl mtm mtn mtp mts mtt ne- nee nel nem nen nep nes net nle nll nlm nln nlp nls nlt nme nml nmm nmn nmp nms nmt nne nnl nnm nnn nnp nns nnt npe npl npm npn npp nps npt nse nsl nsm nsn nsp nss nst nte ntm ntn ntp nts ntt p-p pee pel pem pen pep pes pet ple pll plm pln plp pls plt pme pml pmm pmn pmp pms pmt pn- pne pnl pnm pnn pnp pns pnt ppe ppl ppm ppn ppp pps ppt ps- pse psl psm psn psp pss pst pt- pte ptl ptm ptn ptp pts ptt se- see sel sem sen sep ses set sle sll slm sln slp sls slt sme sml smm smn smp sms smt sne snl snm snn snp sns snt spe spl spm spn spp sps spt ss- sse ssl ssm ssn ssp sss sst ste stl stm stn stp sts stt te- tee tel tem ten tep tes tet tle tll tlm tln tlp tls tlt tme tml tmm tmn tmp tms tmt tne tnl tnm tnn tnp tns tnt tpe tpl tpm tpn tpp tps tpt tse tsl tsm tsn tsp tss tst tte ttl ttm ttn ttp tts ttt