nsyw snyw nysw ynsw synw ysnw nswy snwy nwsy wnsy swny wsny nyws ynws nwys wnys ywns wyns sywn yswn swyn wsyn ywsn wysn
Note: these 'words' (valid or invalid) are all the permutations of the word nsyw. These words are obtained by scrambling the letters in nsyw.