-er -ol eee eef eel eeo eep eer ef- efe eff efl efo efp efr ele elf ell elo elp elr eo- eoe eof eol eoo eop eor ep- epe epf epl epo epp epr ere erf erl ero erp err fee fef fel feo fep fer ffe fff ffl ffo ffp ffr fle flf fll flo flp flr foe fof fol foo fop for fpe fpl fpo fpp fpr fre frf frl fro frp frr l-p lee lef lel leo lep ler lfe lff lfl lfo lfp lfr lle llf lll llo llp llr loe lof lol loo lop lor lpe lpf lpl lpo lpp lpr lrf lro lrp lrr oee oef oel oeo oep oer of- ofe off ofl ofo ofp ofr ole olf oll olo olp oo- oof ool ooo oop oor op- ope opf opl opo opp opr or- ore orf orl oro orp orr p-p pee pef pel peo pep per pfe pff pfl pfo pfp pfr ple plf pll plo plp plr poe pof pol poo pop por ppe ppf ppl ppo ppp ppr pre prf prl pro prp prr re- ree ref rel reo rep rer rfe rff rfl rfo rfp rfr rle rlf rll rlo rlp rlr roe rof rol roo rop ror rpe rpf rpl rpo rpp rpr rrf rrl rrp rrr