quib uqib qiub iqub uiqb iuqb qubi uqbi qbui bqui ubqi buqi qibu iqbu qbiu bqiu ibqu biqu uibq iubq ubiq buiq ibuq biuq
Note: these 'words' (valid or invalid) are all the permutations of the word quib. These words are obtained by scrambling the letters in quib.