bubas ubbas bbuas bbuas ubbas bubas buabs ubabs baubs abubs uabbs aubbs bbaus bbaus babus abbus babus abbus ubabs buabs uabbs aubbs baubs abubs bubsa ubbsa bbusa bbusa ubbsa bubsa busba ubsba bsuba sbuba usbba subba bbsua bbsua bsbua sbbua bsbua sbbua ubsba busba usbba subba bsuba sbuba buasb ubasb bausb abusb uabsb aubsb busab ubsab bsuab sbuab usbab subab basub absub bsaub sbaub asbub sabub uasbb ausbb usabb suabb asubb saubb bbasu bbasu babsu abbsu babsu abbsu bbsau bbsau bsbau sbbau bsbau sbbau basbu absbu bsabu sbabu asbbu sabbu basbu absbu bsabu sbabu asbbu sabbu ubasb buasb uabsb aubsb bausb abusb ubsab busab usbab subab bsuab sbuab uasbb ausbb usabb suabb asubb saubb basub absub bsaub sbaub asbub sabub
Note: these 'words' (valid or invalid) are all the permutations of the word bubas. These words are obtained by scrambling the letters in bubas.