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