-er eee eef eel eem eep eer ef- efe eff efi efl efm efp efr eie eif eii eil eim eip eir ele elf eli ell elm elp elr em- eme emf emi eml emm emp emr ep- epe epf epi epl epm epp epr ere erf eri erl erm erp err fee fef fei fel fem fep fer ffe fff ffi ffl ffm ffp ffr fie fif fii fil fim fip fir fle flf fli fll flm flp flr fme fmf fmi fml fmm fmp fmr fpe fpi fpl fpm fpp fpr fre frf fri frl frm frp frr i-f ie- iee ief iei iel iem iep ier ife iff ifi ifl ifm ifp ifr iie iif iii iil iim iip iir il- ile ilf ili ill ilm ilp ilr im- ime imf imi iml imm imp ipe ipf ipi ipl ipm ipp ipr ir- ire irf iri irl irm irp irr l-p lee lef lei lel lem lep ler lfe lff lfi lfl lfm lfp lfr lie lif lii lil lim lip lir lle llf lli lll llm llp llr lme lmf lmi lml lmm lmp lmr lpe lpf lpi lpl lpm lpp lpr lrf lri lrm lrp lrr m-f m-r mee mef mei mel mem mep mer mfe mff mfi mfl mfm mfp mfr mi- mie mif mii mil mim mip mir mle mlf mli mll mlm mlp mlr mme mmf mmi mml mmm mmp mmr mpe mpf mpi mpl mpm mpp mpr mre mrf mri mrl mrm mrp mrr p-p pee pef pei pel pem pep per pfe pff pfi pfl pfm pfp pfr pie pif pii pil pim pip pir ple plf pli pll plm plp plr pme pmf pmi pml pmm pmp pmr ppe ppf ppi ppl ppm ppp ppr pre prf pri prl prm prp prr re- ree ref rei rel rem rep rer rfe rff rfi rfl rfm rfp rfr rie rif rii ril rim rip rir rle rlf rli rll rlm rlp rlr rme rmf rmi rml rmm rmp rmr rpe rpf rpi rpl rpm rpp rpr rrf rri rrl rrm rrp rrr