nelq enlq nleq lneq elnq lenq neql enql nqel qnel eqnl qenl nlqe lnqe nqle qnle lqne qlne elqn leqn eqln qeln lqen qlen
Note: these 'words' (valid or invalid) are all the permutations of the word nelq. These words are obtained by scrambling the letters in nelq.