ablab balab albab labab blaab lbaab abalb baalb aablb aablb baalb abalb alabb laabb aalbb aalbb laabb alabb blaab lbaab balab ablab labab albab ablba balba albba labba blaba lbaba abbla babla abbla babla bbala bbala albba labba ablba balba lbaba blaba blbaa lbbaa bblaa bblaa lbbaa blbaa ababl baabl aabbl aabbl baabl ababl abbal babal abbal babal bbaal bbaal aabbl aabbl ababl baabl ababl baabl babal abbal bbaal bbaal abbal babal alabb laabb aalbb aalbb laabb alabb albab labab ablab balab lbaab blaab aablb aablb abalb baalb abalb baalb labab albab lbaab blaab ablab balab blaba lbaba balba ablba labba albba blbaa lbbaa bblaa bblaa lbbaa blbaa babla abbla bbala bbala abbla babla labba albba lbaba blaba ablba balba
Note: these 'words' (valid or invalid) are all the permutations of the word ablab. These words are obtained by scrambling the letters in ablab.