dabba adbba dbaba bdaba abdba badba dabba adbba dbaba bdaba abdba badba dbbaa bdbaa dbbaa bdbaa bbdaa bbdaa abbda babda abbda babda bbada bbada dabab adbab dbaab bdaab abdab badab daabb adabb daabb adabb aadbb aadbb dbaab bdaab dabab adbab badab abdab abadb baadb aabdb aabdb baadb abadb dabab adbab dbaab bdaab abdab badab daabb adabb daabb adabb aadbb aadbb dbaab bdaab dabab adbab badab abdab abadb baadb aabdb aabdb baadb abadb dbbaa bdbaa dbbaa bdbaa bbdaa bbdaa dbaba bdaba dabba adbba badba abdba dbaba bdaba dabba adbba badba abdba bbada bbada babda abbda babda abbda abbad babad abbad babad bbaad bbaad ababd baabd aabbd aabbd baabd ababd ababd baabd aabbd aabbd baabd ababd bbaad bbaad babad abbad babad abbad
Note: these 'words' (valid or invalid) are all the permutations of the word dabba. These words are obtained by scrambling the letters in dabba.