eee eel eem eep ees eet eie eii eil eim eip eis eit ele eli ell elm elp els elt em- eme emi eml emm emp ems emt ep- epe epi epl epm epp eps ept es- ese esi esl esm esp ess est ete eti etl etm etp ets ett ie- iee iei iel iem iep ies iet iie iii iil iim iip iis iit il- ile ili ill ilm ilp ils ilt im- ime imi iml imm imp ims imt ipe ipi ipl ipm ipp ips ipt is- ise isi isl ism isp iss ist ite iti itl itm itp its itt l-p lee lei lel lem lep les let lie lii lil lim lip lis lit lle lli lll llm llp lls llt lme lmi lml lmm lmp lms lmt lpe lpi lpl lpm lpp lps lpt lse lsi lsl lsm lsp lss lst lte lti ltl ltm ltp lts ltt mee mei mel mem mep mes met mi- mie mii mil mim mip mis mit mle mli mll mlm mlp mls mlt mme mmi mml mmm mmp mms mmt mpe mpi mpl mpm mpp mps mpt mse msi msl msm msp mss mst mte mti mtl mtm mtp mts mtt p-p pee pei pel pem pep pes pet pie pii pil pim pip pis pit ple pli pll plm plp pls plt pme pmi pml pmm pmp pms pmt ppe ppi ppl ppm ppp pps ppt ps- pse psi psl psm psp pss pst pt- pte pti ptl ptm ptp pts ptt se- see sei sel sem sep ses set sie sii sil sim sip sis sit sle sli sll slm slp sls slt sme smi sml smm smp sms smt spe spi spl spm spp sps spt ss- sse ssi ssl ssm ssp sss sst ste sti stl stm stp sts stt te- tee tei tel tem tep tes tet tie tii til tim tip tis tit tle tli tll tlm tlp tls tlt tme tmi tml tmm tmp tms tmt tpe tpi tpl tpm tpp tps tpt tse tsi tsl tsm tsp tss tst tte tti ttl ttm ttp tts ttt