brock rbock borck obrck robck orbck brcok rbcok bcrok cbrok rcbok crbok bocrk obcrk bcork cbork ocbrk cobrk rocbk orcbk rcobk crobk ocrbk corbk brokc rbokc borkc obrkc robkc orbkc brkoc rbkoc bkroc kbroc rkboc krboc bokrc obkrc bkorc kborc okbrc kobrc rokbc orkbc rkobc krobc okrbc korbc brcko rbcko bcrko cbrko rcbko crbko brkco rbkco bkrco kbrco rkbco krbco bckro cbkro bkcro kbcro ckbro kcbro rckbo crkbo rkcbo krcbo ckrbo kcrbo bockr obckr bcokr cbokr ocbkr cobkr bokcr obkcr bkocr kbocr okbcr kobcr bckor cbkor bkcor kbcor ckbor kcbor ockbr cokbr okcbr kocbr ckobr kcobr rockb orckb rcokb crokb ocrkb corkb rokcb orkcb rkocb krocb okrcb korcb rckob crkob rkcob krcob ckrob kcrob ockrb cokrb okcrb kocrb ckorb kcorb
Note: these 'words' (valid or invalid) are all the permutations of the word brock. These words are obtained by scrambling the letters in brock.