nodus ondus ndous dnous odnus donus nouds onuds nuods unods ounds uonds nduos dnuos nudos undos dunos udnos oduns douns oudns uodns duons udons nodsu ondsu ndosu dnosu odnsu donsu nosdu onsdu nsodu snodu osndu sondu ndsou dnsou nsdou sndou dsnou sdnou odsnu dosnu osdnu sodnu dsonu sdonu nousd onusd nuosd unosd ounsd uonsd nosud onsud nsoud snoud osnud sonud nusod unsod nsuod snuod usnod sunod ousnd uosnd osund sound usond suond nduso dnuso nudso undso dunso udnso ndsuo dnsuo nsduo snduo dsnuo sdnuo nusdo unsdo nsudo snudo usndo sundo dusno udsno dsuno sduno usdno sudno odusn dousn oudsn uodsn duosn udosn odsun dosun osdun sodun dsoun sdoun ousdn uosdn osudn soudn usodn suodn duson udson dsuon sduon usdon sudon
Note: these 'words' (valid or invalid) are all the permutations of the word nodus. These words are obtained by scrambling the letters in nodus.