naelb anelb nealb enalb aenlb eanlb naleb anleb nlaeb lnaeb alneb laneb nelab enlab nleab lneab elnab lenab aelnb ealnb alenb laenb elanb leanb naebl anebl neabl enabl aenbl eanbl nabel anbel nbael bnael abnel banel nebal enbal nbeal bneal ebnal benal aebnl eabnl abenl baenl ebanl beanl nalbe anlbe nlabe lnabe alnbe lanbe nable anble nbale bnale abnle banle nlbae lnbae nblae bnlae lbnae blnae albne labne ablne balne lbane blane nelba enlba nleba lneba elnba lenba nebla enbla nbela bnela ebnla benla nlbea lnbea nblea bnlea lbnea blnea elbna lebna eblna belna lbena blena aelbn ealbn alebn laebn elabn leabn aebln eabln abeln baeln ebaln bealn alben laben ablen balen lbaen blaen elban leban eblan belan lbean blean
Note: these 'words' (valid or invalid) are all the permutations of the word naelb. These words are obtained by scrambling the letters in naelb.