-ol eee eef eel een eeo eep ef- efe eff efl efo efp ele elf ell eln elo elp en- ene enf enl enn eno enp eo- eoe eof eol eon eoo eop ep- epe epf epl epn epo epp fee fef fel fen feo fep ffe fff ffl ffn ffo ffp fle flf fll fln flo flp fne fnf fnl fnn fnp foe fof fol fon foo fop fpe fpl fpn fpo fpp l-p lee lef lel len leo lep lfe lff lfl lfn lfo lfp lle llf lll lln llo llp lne lnl lnn lno lnp loe lof lol lon loo lop lpe lpf lpl lpn lpo lpp ne- nee nef nel nen neo nep nfe nff nfl nfn nfo nfp nle nlf nll nln nlo nlp nne nnf nnl nnn nno nnp no- noe nof nol non noo nop npe npf npl npn npo npp oee oef oel oen oeo oep of- ofe off ofl ofn ofo ofp ole olf oll oln olo olp on- one onf onl onn ono onp oo- oof ool oon ooo oop op- ope opf opl opn opo opp p-p pee pef pel pen peo pep pfe pff pfl pfn pfo pfp ple plf pll pln plo plp pn- pne pnf pnl pnn pno pnp poe pof pol pon poo pop ppe ppf ppl ppn ppo ppp