sltas lstas stlas tslas ltsas tlsas slats lsats salts aslts lasts alsts stals tsals satls astls tasls atsls ltass tlass latss altss talss atlss sltsa lstsa stlsa tslsa ltssa tlssa slsta lssta sslta sslta lssta slsta stsla tssla sstla sstla tssla stsla ltssa tlssa lstsa sltsa tslsa stlsa slast lsast salst aslst lasst alsst slsat lssat sslat sslat lssat slsat saslt asslt ssalt ssalt asslt saslt lasst alsst lsast slast aslst salst stasl tsasl satsl astsl tassl atssl stsal tssal sstal sstal tssal stsal sastl asstl ssatl ssatl asstl sastl tassl atssl tsasl stasl astsl satsl ltass tlass latss altss talss atlss ltsas tlsas lstas sltas tslas stlas lasts alsts lsats slats aslts salts tasls atsls tsals stals astls satls
Note: these 'words' (valid or invalid) are all the permutations of the word sltas. These words are obtained by scrambling the letters in sltas.