unesr nuesr uensr eunsr neusr enusr unser nuser usner suner nsuer snuer uesnr eusnr usenr suenr esunr seunr nesur ensur nseur sneur esnur senur uners nuers uenrs eunrs neurs enurs unres nures urnes runes nrues rnues uerns eurns urens ruens eruns reuns nerus enrus nreus rneus ernus renus unsre nusre usnre sunre nsure snure unrse nurse urnse runse nruse rnuse usrne surne ursne rusne srune rsune nsrue snrue nrsue rnsue srnue rsnue uesrn eusrn usern suern esurn seurn uersn eursn uresn ruesn erusn reusn usren suren ursen rusen sruen rsuen esrun serun ersun resun sreun rseun nesru ensru nseru sneru esnru senru nersu enrsu nresu rnesu ernsu rensu nsreu snreu nrseu rnseu srneu rsneu esrnu sernu ersnu resnu srenu rsenu
Note: these 'words' (valid or invalid) are all the permutations of the word unesr. These words are obtained by scrambling the letters in unesr.