dense ednse dnese ndese endse nedse desne edsne dsene sdene esdne sedne dnsee ndsee dsnee sdnee nsdee sndee ensde nesde esnde sende nsede snede denes ednes dnees ndees endes nedes deens edens deens edens eedns eedns dnees ndees denes ednes nedes endes eneds needs eends eends needs eneds desen edsen dseen sdeen esden seden deesn edesn deesn edesn eedsn eedsn dseen sdeen desen edsen seden esden esedn seedn eesdn eesdn seedn esedn dnsee ndsee dsnee sdnee nsdee sndee dnese ndese dense ednse nedse endse dsene sdene desne edsne sedne esdne nsede snede nesde ensde sende esnde ensed nesed esned sened nseed sneed enesd neesd eensd eensd neesd enesd esend seend eesnd eesnd seend esend nseed sneed nesed ensed sened esned
Note: these 'words' (valid or invalid) are all the permutations of the word dense. These words are obtained by scrambling the letters in dense.