-ene eeee eefe eefl eefn eeke eele efen efke ekek eken eker ekne ekur elee elef elek elen eler elfe elke elle ellu elne elue elul enee enel ener enke enkr enne ennu enue enuf enur erel eren erer erke erle erll erne erre erur euer eule eur- eure f--k feek feel feen feer fefe feff feke fele felf felk fell fene fenk fenn fere ferk fern ferr feru ffee ffff ffrr ffun flee flen fler flue fluf flur fnuf free fren frue frun fuel fuff fufu fuke fukk fuku fule fulk full fulu fune funf funk fur- fure furl furn furr keef keek keel keen keer keff kefr keke kekl keku kele kelf kelk kell keln kelu ken- kene kenk kenl kenn kenr kenu ker- kere kerf kerk kerl kern kerr keru keul keun keur kfel kfer kfff kffk kffn kflf kfll kfln kfnf kfnk kfnl kfnn kfre kfrn kfrr kfru kful kfun kken kkfn kkfr kkkk kklf kkll kkln kkne kknn kknu kkre kkrf kkrk kkrl kkrn kkrr kkuu klee klef klek klen kler klfe klff klfn klkk klkl klkn klkr klle kllk klne klnn klrf klrk klrn klrr klru klue kluf kluk klun klur kluu knee knef knek knel knen kneu knfl knfr knkk knlf knlr knnk knnr knrk knue knuk knur kree kref krek kren kreu krfe krff krfn krke krkk krkn krkr krku krle krlf krln krne krnk krnn krnu krre krrf krrk krrl krrn krrr krue kruf kruk krul krun krur kuek kuel kuen kueu kuff kufn kufr kuke kukk kukl kukn kuku kule kulf kull kuln kulu kune kunk kunr kunu kure kurk kurl kurr kuru kuuk kuul kuur kuuu le-u leef leek leel leen leer lefe leff leke lekk lele lell lelu lene lenk lenn lere lerk lern leuk leun leur llef lleu llll lner lnnk lrne lrrr luef luer lufe luff lufu luke lule lull lulu lune lunk lunn lure lurk luuk neef neel neen neer nefe neff nefl neke neku nele nelf nell nene nenu nere nerf nerk nerl nerr neru neue neuf neuk neun neur neuu nfer nfff nkrf nler nnnn nren nrrl nuee nuel nuer nuff nuke nuku nule null nune nunk nunn nure nurl nurn nurr nuru nuuk reef reek reel reen refe reff refl refn refr refu reke rele rell rene renk renn renu rere reru reue reuf reuk reul reuu rfef rffl rkkf rlee rlef rleu rrle rrrr rrun ruel ruen ruer rufe ruff ruke rukk rukn ruku rule rulk rull rune runf runk runn rure ruru ruun uele uell ufel ufer uffe ufuk ukek ukeu ukur ulee ulek ulen ulfe ulle ullr ulne uluk ulul unee unef unen uner unke unkl unkn unle unlf unne unrf ure- urfe urff urke urle urne urre uruk urun urur uuen uulu uuuu