ranus arnus rnaus nraus anrus narus rauns aruns ruans urans aurns uarns rnuas nruas runas urnas nuras unras anurs naurs aunrs uanrs nuars unars ransu arnsu rnasu nrasu anrsu narsu rasnu arsnu rsanu sranu asrnu sarnu rnsau nrsau rsnau srnau nsrau snrau ansru nasru asnru sanru nsaru snaru rausn arusn ruasn urasn aursn uarsn rasun arsun rsaun sraun asrun sarun rusan ursan rsuan sruan usran suran ausrn uasrn asurn saurn usarn suarn rnusa nrusa runsa urnsa nursa unrsa rnsua nrsua rsnua srnua nsrua snrua rusna ursna rsuna sruna usrna surna nusra unsra nsura snura usnra sunra anusr nausr aunsr uansr nuasr unasr ansur nasur asnur sanur nsaur snaur ausnr uasnr asunr saunr usanr suanr nusar unsar nsuar snuar usnar sunar
Note: these 'words' (valid or invalid) are all the permutations of the word ranus. These words are obtained by scrambling the letters in ranus.