bbros bbros brbos rbbos brbos rbbos bbors bbors bobrs obbrs bobrs obbrs brobs rbobs borbs obrbs robbs orbbs brobs rbobs borbs obrbs robbs orbbs bbrso bbrso brbso rbbso brbso rbbso bbsro bbsro bsbro sbbro bsbro sbbro brsbo rbsbo bsrbo sbrbo rsbbo srbbo brsbo rbsbo bsrbo sbrbo rsbbo srbbo bbosr bbosr bobsr obbsr bobsr obbsr bbsor bbsor bsbor sbbor bsbor sbbor bosbr obsbr bsobr sbobr osbbr sobbr bosbr obsbr bsobr sbobr osbbr sobbr brosb rbosb borsb obrsb robsb orbsb brsob rbsob bsrob sbrob rsbob srbob bosrb obsrb bsorb sborb osbrb sobrb rosbb orsbb rsobb srobb osrbb sorbb brosb rbosb borsb obrsb robsb orbsb brsob rbsob bsrob sbrob rsbob srbob bosrb obsrb bsorb sborb osbrb sobrb rosbb orsbb rsobb srobb osrbb sorbb
Note: these 'words' (valid or invalid) are all the permutations of the word bbros. These words are obtained by scrambling the letters in bbros.