tujb utjb tjub jtub ujtb jutb tubj utbj tbuj btuj ubtj butj tjbu jtbu tbju btju jbtu bjtu ujbt jubt ubjt bujt jbut bjut
Note: these 'words' (valid or invalid) are all the permutations of the word tujb. These words are obtained by scrambling the letters in tujb.