sspur sspur spsur pssur spsur pssur ssupr ssupr suspr usspr suspr usspr spusr psusr supsr uspsr pussr upssr spusr psusr supsr uspsr pussr upssr sspru sspru spsru pssru spsru pssru ssrpu ssrpu srspu rsspu srspu rsspu sprsu psrsu srpsu rspsu prssu rpssu sprsu psrsu srpsu rspsu prssu rpssu ssurp ssurp susrp ussrp susrp ussrp ssrup ssrup srsup rssup srsup rssup sursp usrsp srusp rsusp urssp russp sursp usrsp srusp rsusp urssp russp spurs psurs suprs usprs pusrs upsrs sprus psrus srpus rspus prsus rpsus surps usrps srups rsups ursps rusps purss uprss pruss rpuss urpss rupss spurs psurs suprs usprs pusrs upsrs sprus psrus srpus rspus prsus rpsus surps usrps srups rsups ursps rusps purss uprss pruss rpuss urpss rupss
Note: these 'words' (valid or invalid) are all the permutations of the word sspur. These words are obtained by scrambling the letters in sspur.