basts absts bsats sbats asbts sabts batss abtss btass tbass atbss tabss bstas sbtas btsas tbsas stbas tsbas astbs satbs atsbs tasbs stabs tsabs basst absst bsast sbast asbst sabst basst absst bsast sbast asbst sabst bssat sbsat bssat sbsat ssbat ssbat assbt sasbt assbt sasbt ssabt ssabt batss abtss btass tbass atbss tabss basts absts bsats sbats asbts sabts btsas tbsas bstas sbtas tsbas stbas atsbs tasbs astbs satbs tsabs stabs bstsa sbtsa btssa tbssa stbsa tsbsa bssta sbsta bssta sbsta ssbta ssbta btssa tbssa bstsa sbtsa tsbsa stbsa stsba tssba sstba sstba tssba stsba astsb satsb atssb tassb stasb tsasb asstb sastb asstb sastb ssatb ssatb atssb tassb astsb satsb tsasb stasb stsab tssab sstab sstab tssab stsab
Note: these 'words' (valid or invalid) are all the permutations of the word basts. These words are obtained by scrambling the letters in basts.