gabba agbba gbaba bgaba abgba bagba gabba agbba gbaba bgaba abgba bagba gbbaa bgbaa gbbaa bgbaa bbgaa bbgaa abbga babga abbga babga bbaga bbaga gabab agbab gbaab bgaab abgab bagab gaabb agabb gaabb agabb aagbb aagbb gbaab bgaab gabab agbab bagab abgab abagb baagb aabgb aabgb baagb abagb gabab agbab gbaab bgaab abgab bagab gaabb agabb gaabb agabb aagbb aagbb gbaab bgaab gabab agbab bagab abgab abagb baagb aabgb aabgb baagb abagb gbbaa bgbaa gbbaa bgbaa bbgaa bbgaa gbaba bgaba gabba agbba bagba abgba gbaba bgaba gabba agbba bagba abgba bbaga bbaga babga abbga babga abbga abbag babag abbag babag bbaag bbaag ababg baabg aabbg aabbg baabg ababg ababg baabg aabbg aabbg baabg ababg bbaag bbaag babag abbag babag abbag
Note: these 'words' (valid or invalid) are all the permutations of the word gabba. These words are obtained by scrambling the letters in gabba.