nkwo knwo nwko wnko kwno wkno nkow know nokw onkw konw oknw nwok wnok nowk onwk wonk ownk kwon wkon kown okwn wokn owkn
Note: these 'words' (valid or invalid) are all the permutations of the word nkwo. These words are obtained by scrambling the letters in nkwo.