quep uqep qeup equp ueqp euqp qupe uqpe qpue pque upqe puqe qepu eqpu qpeu pqeu epqu pequ uepq eupq upeq pueq epuq peuq
Note: these 'words' (valid or invalid) are all the permutations of the word quep. These words are obtained by scrambling the letters in quep.