-er eee eel eem eep eer eet eie eii eil eim eip eir eit ele eli ell elm elp elr elt em- eme emi eml emm emp emr emt ep- epe epi epl epm epp epr ept ere eri erl erm erp err ert ete eti etl etm etp etr ett ie- iee iei iel iem iep ier iet iie iii iil iim iip iir iit il- ile ili ill ilm ilp ilr ilt im- ime imi iml imm imp imt ipe ipi ipl ipm ipp ipr ipt ir- ire iri irl irm irp irr irt ite iti itl itm itp itt l-p lee lei lel lem lep ler let lie lii lil lim lip lir lit lle lli lll llm llp llr llt lme lmi lml lmm lmp lmr lmt lpe lpi lpl lpm lpp lpr lpt lri lrm lrp lrr lrt lte lti ltl ltm ltp ltr ltt m-r mee mei mel mem mep mer met mi- mie mii mil mim mip mir mit mle mli mll mlm mlp mlr mlt mme mmi mml mmm mmp mmr mmt mpe mpi mpl mpm mpp mpr mpt mre mri mrl mrm mrp mrr mrt mte mti mtl mtm mtp mtr mtt p-p pee pei pel pem pep per pet pie pii pil pim pip pir pit ple pli pll plm plp plr plt pme pmi pml pmm pmp pmr pmt ppe ppi ppl ppm ppp ppr ppt pre pri prl prm prp prr prt pt- pte pti ptl ptm ptp ptr ptt re- ree rei rel rem rep rer ret rie rii ril rim rip rir rit rle rli rll rlm rlp rlr rlt rme rmi rml rmm rmp rmr rmt rpe rpi rpl rpm rpp rpr rpt rri rrl rrm rrp rrr rrt rte rti rtl rtm rtp rtr rtt te- tee tei tel tem tep ter tet tie tii til tim tip tir tit tle tli tll tlm tlp tlr tlt tme tmi tml tmm tmp tmr tmt tpe tpi tpl tpm tpp tpr tpt tre tri trl trm trp trr trt tte tti ttl ttm ttp ttr ttt