-er eee eel eem eep eer ees ele ell elm elp elr els em- eme eml emm emp emr ems ep- epe epl epm epp epr eps ere erl erm erp err ers es- ese esl esm esp esr ess l-p lee lel lem lep ler les lle lll llm llp llr lls lme lml lmm lmp lmr lms lpe lpl lpm lpp lpr lps lrm lrp lrr lrs lse lsl lsm lsp lsr lss m-r mee mel mem mep mer mes mle mll mlm mlp mlr mls mme mml mmm mmp mmr mms mpe mpl mpm mpp mpr mps mre mrl mrm mrp mrr mrs mse msl msm msp msr mss p-p pee pel pem pep per pes ple pll plm plp plr pls pme pml pmm pmp pmr pms ppe ppl ppm ppp ppr pps pre prl prm prp prr prs ps- pse psl psm psp psr pss re- ree rel rem rep rer res rle rll rlm rlp rlr rls rme rml rmm rmp rmr rms rpe rpl rpm rpp rpr rps rrl rrm rrp rrr rrs rse rsl rsm rsp rsr rss se- see sel sem sep ser ses sle sll slm slp slr sls sme sml smm smp smr sms spe spl spm spp spr sps sr- sre srl srm srp srr srs ss- sse ssl ssm ssp ssr sss