eee eel eem eep eet ele ell elm elp elt em- eme eml emm emp emt ep- epe epl epm epp ept ete etl etm etp ett l-p lee lel lem lep let lle lll llm llp llt lme lml lmm lmp lmt lpe lpl lpm lpp lpt lte ltl ltm ltp ltt mee mel mem mep met mle mll mlm mlp mlt mme mml mmm mmp mmt mpe mpl mpm mpp mpt mte mtl mtm mtp mtt p-p pee pel pem pep pet ple pll plm plp plt pme pml pmm pmp pmt ppe ppl ppm ppp ppt pt- pte ptl ptm ptp ptt te- tee tel tem tep tet tle tll tlm tlp tlt tme tml tmm tmp tmt tpe tpl tpm tpp tpt tte ttl ttm ttp ttt