-er eee eel eem eep eer eet ele ell elm elp elr elt em- eme eml emm emp emr emt ep- epe epl epm epp epr ept ere erl erm erp err ert ete etl etm etp etr ett l-p lee lel lem lep ler let lle lll llm llp llr llt lme lml lmm lmp lmr lmt lpe lpl lpm lpp lpr lpt lrm lrp lrr lrt lte ltl ltm ltp ltr ltt m-r mee mel mem mep mer met mle mll mlm mlp mlr mlt mme mml mmm mmp mmr mmt mpe mpl mpm mpp mpr mpt mre mrl mrm mrp mrr mrt mte mtl mtm mtp mtr mtt p-p pee pel pem pep per pet ple pll plm plp plr plt pme pml pmm pmp pmr pmt ppe ppl ppm ppp ppr ppt pre prl prm prp prr prt pt- pte ptl ptm ptp ptr ptt re- ree rel rem rep rer ret rle rll rlm rlp rlr rlt rme rml rmm rmp rmr rmt rpe rpl rpm rpp rpr rpt rrl rrm rrp rrr rrt rte rtl rtm rtp rtr rtt te- tee tel tem tep ter tet tle tll tlm tlp tlr tlt tme tml tmm tmp tmr tmt tpe tpl tpm tpp tpr tpt tre trl trm trp trr trt tte ttl ttm ttp ttr ttt