-ene eeee eefe eefl eefn eeke eele efen efke ekek eken eker ekne elee elef elek elen eler elfe elke elle elne enee enel ener enke enkr enne erel eren erer erke erle erll erne erre f--k feek feel feen feer fefe feff feke fele felf felk fell fene fenk fenn fere ferk fern ferr ffee ffff ffrr flee flen fler free fren keef keek keel keen keer keff kefr keke kekl kele kelf kelk kell keln ken- kene kenk kenl kenn kenr ker- kere kerf kerk kerl kern kerr kfel kfer kfff kffk kffn kflf kfll kfln kfnf kfnk kfnl kfnn kfre kfrn kfrr kken kkfn kkfr kkkk kklf kkll kkln kkne kknn kkre kkrf kkrk kkrl kkrn kkrr klee klef klek klen kler klfe klff klfn klkk klkl klkn klkr klle kllk klne klnn klrf klrk klrn klrr knee knef knek knel knen knfl knfr knkk knlf knlr knnk knnr knrk kree kref krek kren krfe krff krfn krke krkk krkn krkr krle krlf krln krne krnk krnn krre krrf krrk krrl krrn krrr leef leek leel leen leer lefe leff leke lekk lele lell lene lenk lenn lere lerk lern llef llll lner lnnk lrne lrrr neef neel neen neer nefe neff nefl neke nele nelf nell nene nere nerf nerk nerl nerr nfer nfff nkrf nler nnnn nren nrrl reef reek reel reen refe reff refl refn refr reke rele rell rene renk renn rere rfef rffl rkkf rlee rlef rrle rrrr