-ene eeee eefe eefl eefn eeke eele efen efke ekek eken eker ekne ekur elee elef elek elen eler elex elfe elke elle ellu elne elue elul enee enel ener enke enkr enne ennu enue enuf enur er-x erel eren erer erfx erke erle erll erne erre erur euer eule eur- eure exel exen exer exrx exul f--k feek feel feen feer fefe feff feke fele felf felk fell fene fenk fenn fere ferk fern ferr feru feux ffee ffff ffrr ffun flee flen fler flex flue fluf flur flux fnuf free fren frex frue frun fuel fuff fufu fuke fukk fuku fule fulk full fulu fune funf funk funx fur- fure furl furn furr fuxl keef keek keel keen keer keff kefr kefx keke kekl keku kele kelf kelk kell keln kelu ken- kene kenk kenl kenn kenr kenu ker- kere kerf kerk kerl kern kerr keru kerx keul keun keur kexl kexx kfel kfer kfff kffk kffn kffx kfkx kflf kfll kfln kflx kfnf kfnk kfnl kfnn kfnx kfre kfrn kfrr kfru kfrx kful kfun kfxe kfxf kfxl kfxn kfxr kfxu kfxx kken kkex kkfn kkfr kkkk kklf kkll kkln kklx kkne kknn kknu kknx kkre kkrf kkrk kkrl kkrn kkrr kkrx kkuu kkxk kkxl kkxx klee klef klek klen kler klex klfe klff klfn klfx klkk klkl klkn klkr klkx klle kllk klne klnn klrf klrk klrn klrr klru klrx klue kluf kluk klun klur kluu klux klxk klxr klxx knee knef knek knel knen kneu knex knfl knfr knfx knkk knlf knlr knlx knnk knnr knrk knrx knue knuk knur knxr knxx kree kref krek kren kreu krex krfe krff krfn krfx krke krkk krkn krkr krku krkx krle krlf krln krlx krne krnk krnn krnu krre krrf krrk krrl krrn krrr krrx krue kruf kruk krul krun krur krux krxf krxk krxl krxr krxx kuek kuel kuen kueu kuff kufn kufr kufx kuke kukk kukl kukn kuku kule kulf kull kuln kulu kune kunk kunr kunu kunx kure kurk kurl kurr kuru kuuk kuul kuur kuuu kuxx kxel kxen kxex kxff kxfn kxkk kxku kxkx kxle kxll kxlr kxlu kxlx kxne kxre kxrk kxrr kxrx kxul kxxe kxxf kxxk kxxl kxxn kxxr kxxx le-u leef leek leel leen leer lefe leff leke lekk lele lell lelu lene lenk lenn lere lerk lern leuk leun leur lexx llef lleu llll lner lnnk lrne lrrr luef luer lufe luff lufu luke lule lull lulu lune lunk lunn lure lurk luuk luxe lxxx 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 nexe nexx nfer nfff nkrf nler nnnn nren nrrl nuee nuel nuer nuff nufx 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 reux rexx 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 ulex ulfe ulle ullr ulne uluk ulul unee unef unen uner unke unkl unkn unle unlf unne unrf ure- urex urfe urff urke urle urne urre uruk urun urur uuen uulu uuuu uxue uxul xeer xefe xen- xene xenn xenu xer- xexe xfer xnee xuxu xxxx