-er eee eel eem eep eer eie eii eil eim eip eir ele eli ell elm elp elr em- eme emi eml emm emp emr ep- epe epi epl epm epp epr ere eri erl erm erp err ie- iee iei iel iem iep ier iie iii iil iim iip iir il- ile ili ill ilm ilp ilr im- ime imi iml imm imp ipe ipi ipl ipm ipp ipr ir- ire iri irl irm irp irr l-p lee lei lel lem lep ler lie lii lil lim lip lir lle lli lll llm llp llr lme lmi lml lmm lmp lmr lpe lpi lpl lpm lpp lpr lri lrm lrp lrr m-r mee mei mel mem mep mer mi- mie mii mil mim mip mir mle mli mll mlm mlp mlr mme mmi mml mmm mmp mmr mpe mpi mpl mpm mpp mpr mre mri mrl mrm mrp mrr p-p pee pei pel pem pep per pie pii pil pim pip pir ple pli pll plm plp plr pme pmi pml pmm pmp pmr ppe ppi ppl ppm ppp ppr pre pri prl prm prp prr re- ree rei rel rem rep rer rie rii ril rim rip rir rle rli rll rlm rlp rlr rme rmi rml rmm rmp rmr rpe rpi rpl rpm rpp rpr rri rrl rrm rrp rrr