crabs rcabs carbs acrbs racbs arcbs crbas rcbas cbras bcras rbcas brcas cabrs acbrs cbars bcars abcrs bacrs rabcs arbcs rbacs bracs abrcs barcs crasb rcasb carsb acrsb racsb arcsb crsab rcsab csrab scrab rscab srcab casrb acsrb csarb scarb ascrb sacrb rascb arscb rsacb sracb asrcb sarcb crbsa rcbsa cbrsa bcrsa rbcsa brcsa crsba rcsba csrba scrba rscba srcba cbsra bcsra csbra scbra bscra sbcra rbsca brsca rsbca srbca bsrca sbrca cabsr acbsr cbasr bcasr abcsr bacsr casbr acsbr csabr scabr ascbr sacbr cbsar bcsar csbar scbar bscar sbcar abscr bascr asbcr sabcr bsacr sbacr rabsc arbsc rbasc brasc abrsc barsc rasbc arsbc rsabc srabc asrbc sarbc rbsac brsac rsbac srbac bsrac sbrac absrc basrc asbrc sabrc bsarc sbarc
Note: these 'words' (valid or invalid) are all the permutations of the word crabs. These words are obtained by scrambling the letters in crabs.