briks rbiks birks ibrks ribks irbks brkis rbkis bkris kbris rkbis krbis bikrs ibkrs bkirs kbirs ikbrs kibrs rikbs irkbs rkibs kribs ikrbs kirbs brisk rbisk birsk ibrsk ribsk irbsk brsik rbsik bsrik sbrik rsbik srbik bisrk ibsrk bsirk sbirk isbrk sibrk risbk irsbk rsibk sribk isrbk sirbk brksi rbksi bkrsi kbrsi rkbsi krbsi brski rbski bsrki sbrki rsbki srbki bksri kbsri bskri sbkri ksbri skbri rksbi krsbi rskbi srkbi ksrbi skrbi biksr ibksr bkisr kbisr ikbsr kibsr biskr ibskr bsikr sbikr isbkr sibkr bksir kbsir bskir sbkir ksbir skbir iksbr kisbr iskbr sikbr ksibr skibr riksb irksb rkisb krisb ikrsb kirsb riskb irskb rsikb srikb isrkb sirkb rksib krsib rskib srkib ksrib skrib iksrb kisrb iskrb sikrb ksirb skirb
Note: these 'words' (valid or invalid) are all the permutations of the word briks. These words are obtained by scrambling the letters in briks.