gowk ogwk gwok wgok owgk wogk gokw ogkw gkow kgow okgw kogw gwko wgko gkwo kgwo wkgo kwgo owkg wokg okwg kowg wkog kwog
Note: these 'words' (valid or invalid) are all the permutations of the word gowk. These words are obtained by scrambling the letters in gowk.