-er eee eef eel een eer ef- efe eff efl efr ele elf ell eln elr elu en- ene enf enl enn enr enu ere erf erl ern err eru eu- eue euf eul eun eur fee fef fel fen fer feu ffe fff ffl ffn ffr ffu fle flf fll fln flr flu fne fnf fnl fnn fnr fnu fre frf frl frn frr fru fue fuf ful fun fur fuu lee lef lel len ler leu lfe lff lfl lfn lfr lfu lle llf lll lln llr llu lne lnl lnn lnr lnu lrf lrn lrr lru lue luf lul lun lur luu ne- nee nef nel nen ner neu nfe nff nfl nfn nfr nfu nle nlf nll nln nlr nlu nne nnf nnl nnn nnu nre nrf nrl nrn nrr nru nue nul nun nur nuu re- ree ref rel ren rer reu rfe rff rfl rfn rfr rfu rle rlf rll rln rlr rlu rnn rnr rnu rrf rrl rrn rrr rru rue ruf run rur ruu uee uef uel uen uer ufe uff ufl ufn ufr ufu ule ulf ull uln ulr ulu un- une unf unl unn unr unu ur- ure urf url urn urr uru uue uun uur uuu

-ene eeee eefe eefl eefn eele efen elee elef elen eler elfe elle ellu elne elue elul enee enel ener enne ennu enue enuf enur erel eren erer erle erll erne erre erur euer eule eur- eure feel feen feer fefe feff fele felf fell fene fenn fere fern ferr feru ffee ffff ffrr ffun flee flen fler flue fluf flur fnuf free fren frue frun fuel fuff fufu fule full fulu fune funf fur- fure furl furn furr le-u leef leel leen leer lefe leff lele lell lelu lene lenn lere lern leun leur llef lleu llll lner lrne lrrr luef luer lufe luff lufu lule lull lulu lune lunn lure neef neel neen neer nefe neff nefl nele nelf nell nene nenu nere nerf nerl nerr neru neue neuf neun neur neuu nfer nfff nler nnnn nren nrrl nuee nuel nuer nuff nule null nune nunn nure nurl nurn nurr nuru reef reel reen refe reff refl refn refr refu rele rell rene renn renu rere reru reue reuf reul reuu rfef rffl rlee rlef rleu rrle rrrr rrun ruel ruen ruer rufe ruff rule rull rune runf runn rure ruru ruun uele uell ufel ufer uffe ulee ulen ulfe ulle ullr ulne ulul unee unef unen uner unle unlf unne unrf ure- urfe urff urle urne urre urun urur uuen uulu uuuu

eeeee eeler eener efere effer efren efuru elele elene elfen ellel ellen eller ellul elren elulu eluru enfer enfeu enlen enuff enure enurn ereen erere erlen ernen ernle euell eulen euler eurel eurre feele feeln feere felle fener feneu fenne ferel feren ferle ferr- ferre feuer feule fleen fleer flene flenu flere fleur fluff flure flurn flurr freel freer frere freur fu-fu fulen fulle fullf funel funen furel furen leell leere lefeu leffe leful leleu lelle lenne leren lerer lerne lueen luen lufre lulle lulul lunel lunne luren lurer lurne lurue lurun neele neelu neere nefen nefer neffe nefre nelle nellu neree nerre nerul nerur neuen neuer neueu neune neur- neure neurl nfler nu-nu nuell nulle nunun nure- nurlu nurun reefe reene reere refel refen refer reffe refne relee relue renee rener renfe renne rere- reree rerun reuel reuen reuer reule reune ruele ruell ruere rueun ruffe ruler runer runne ruule uelen uelfe ufere ulene ullur ululu uluru unfun unfur unnun unnur unref unrun unurn urelu uuuuu

eeuler efeler effere eleele elefun elfern ellern enfree enleen enlure ernee ernulf euller feeler fellen feller fennel fenner ferfel ferfer fernel ferner ferrel ferren ferrer ferrur ferule feulen fleure fluren flurre freele frefre frenne freren freure frllen fueler fuffle fuller funnel funner funrun furfen furfur furler furner furrer furrfu leeful leelee leerer leerne leffel leffen lefull lenner lerner leurne luffer lufful luller lunen luneur lunlun lunner lunule lurulu n-rule neener nefere neffel nennur nerful nerrer nerull neuere neueue neuler neuner nuenen nuller nurulu re-run reefer reeffe reeler reeuel refeel refeff refell reflee reflue refuel refurl releef reller relleu renner renren renule rereel rerule reuele reuere reuler reulle rueful ruelle ruffer ruffle ruller runnel runner ullern unfeel unfele unfere unfree unfull unfurl unlull unreel unrufe unrule urnell urnful uruffe

effurun enferre erenler felfree fellner fennell ferrell ferrere ferrule ferrure feruler feulner fleener fleerer fluelen fluffer freerun fueller funnell furrene furrure leffler lefulle lenfell lleufer luenell lureful lurleen neuffen neuffer nufenen referee referer refrene releefe rennell rennere rerefer ruffler runfree

feelfree fellerer flueelen fluellen freefell fulleren neferure referree referrer refueler refunnel unleeful unreeler unrueful

fllllllll fullerene funfunfun neferefre refueller runrunrun unleueful unruleful

freerunner funnelfuel rufflerule

neferneferure runner-runner