-er -up eee eef eel een eep eer ef- efe eff efl efp efr ele elf ell eln elp elr elu en- ene enf enl enn enp enr enu ep- epe epf epl epn epp epr epu ere erf erl ern erp err eru eu- eue euf eul eun eup eur fee fef fel fen fep fer feu ffe fff ffl ffn ffp ffr ffu fle flf fll fln flp flr flu fne fnf fnl fnn fnp fnr fnu fpe fpl fpn fpp fpr fpu fre frf frl frn frp frr fru fue fuf ful fun fup fur fuu l-p lee lef lel len lep ler leu lfe lff lfl lfn lfp lfr lfu lle llf lll lln llp llr llu lne lnl lnn lnp lnr lnu lpe lpf lpl lpn lpp lpr lpu lrf lrn lrp lrr lru lue luf lul lun lup lur luu ne- nee nef nel nen nep ner neu nfe nff nfl nfn nfp nfr nfu nle nlf nll nln nlp nlr nlu nne nnf nnl nnn nnp nnu npe npf npl npn npp npr npu nre nrf nrl nrn nrp nrr nru nue nul nun nup nur nuu p-p pee pef pel pen pep per peu pfe pff pfl pfn pfp pfr pfu ple plf pll pln plp plr plu pn- pne pnf pnl pnn pnp pnr pnu ppe ppf ppl ppn ppp ppr ppu pre prf prl prn prp prr pru pue puf pul pun pup pur puu re- ree ref rel ren rep rer reu rfe rff rfl rfn rfp rfr rfu rle rlf rll rln rlp rlr rlu rnn rnp rnr rnu rpe rpf rpl rpn rpp rpr rpu rrf rrl rrn rrp rrr rru rue ruf run rup rur ruu uee uef uel uen uep uer ufe uff ufl ufn ufp ufr ufu ule ulf ull uln ulp ulr ulu un- une unf unl unn unp unr unu up- upe upf upn upp upr upu ur- ure urf url urn urp urr uru uue uun uur uuu