osbcb sobcb obscb boscb sbocb bsocb oscbb socbb ocsbb cosbb scobb csobb obcsb bocsb ocbsb cobsb bcosb cbosb sbcob bscob scbob csbob bcsob cbsob osbbc sobbc obsbc bosbc sbobc bsobc osbbc sobbc obsbc bosbc sbobc bsobc obbsc bobsc obbsc bobsc bbosc bbosc sbboc bsboc sbboc bsboc bbsoc bbsoc oscbb socbb ocsbb cosbb scobb csobb osbcb sobcb obscb boscb sbocb bsocb ocbsb cobsb obcsb bocsb cbosb bcosb scbob csbob sbcob bscob cbsob bcsob obcbs bocbs ocbbs cobbs bcobs cbobs obbcs bobcs obbcs bobcs bbocs bbocs ocbbs cobbs obcbs bocbs cbobs bcobs bcbos cbbos bbcos bbcos cbbos bcbos sbcbo bscbo scbbo csbbo bcsbo cbsbo sbbco bsbco sbbco bsbco bbsco bbsco scbbo csbbo sbcbo bscbo cbsbo bcsbo bcbso cbbso bbcso bbcso cbbso bcbso
Note: these 'words' (valid or invalid) are all the permutations of the word osbcb. These words are obtained by scrambling the letters in osbcb.