baebk abebk beabk ebabk aebbk eabbk babek abbek bbaek bbaek abbek babek bebak ebbak bbeak bbeak ebbak bebak aebbk eabbk abebk baebk ebabk beabk baekb abekb beakb ebakb aebkb eabkb bakeb abkeb bkaeb kbaeb akbeb kabeb bekab ebkab bkeab kbeab ekbab kebab aekbb eakbb akebb kaebb ekabb keabb babke abbke bbake bbake abbke babke bakbe abkbe bkabe kbabe akbbe kabbe bbkae bbkae bkbae kbbae bkbae kbbae abkbe bakbe akbbe kabbe bkabe kbabe bebka ebbka bbeka bbeka ebbka bebka bekba ebkba bkeba kbeba ekbba kebba bbkea bbkea bkbea kbbea bkbea kbbea ebkba bekba ekbba kebba bkeba kbeba aebkb eabkb abekb baekb ebakb beakb aekbb eakbb akebb kaebb ekabb keabb abkeb bakeb akbeb kabeb bkaeb kbaeb ebkab bekab ekbab kebab bkeab kbeab
Note: these 'words' (valid or invalid) are all the permutations of the word baebk. These words are obtained by scrambling the letters in baebk.