-er eee eel eep eer ees ele ell elp elr els ep- epe epl epp epr eps ere erl erp err ers es- ese esl esp esr ess l-p lee lel lep ler les lle lll llp llr lls lpe lpl lpp lpr lps lrp lrr lrs lse lsl lsp lsr lss p-p pee pel pep per pes ple pll plp plr pls ppe ppl ppp ppr pps pre prl prp prr prs ps- pse psl psp psr pss re- ree rel rep rer res rle rll rlp rlr rls rpe rpl rpp rpr rps rrl rrp rrr rrs rse rsl rsp rsr rss se- see sel sep ser ses sle sll slp slr sls spe spl spp spr sps sr- sre srl srp srr srs ss- sse ssl ssp ssr sss