bakh abkh bkah kbah akbh kabh bahk abhk bhak hbak ahbk habk bkha kbha bhka hbka khba hkba akhb kahb ahkb hakb khab hkab
Note: these 'words' (valid or invalid) are all the permutations of the word bakh. These words are obtained by scrambling the letters in bakh.