rcdas crdas rdcas drcas cdras dcras rcads crads racds arcds cards acrds rdacs dracs radcs ardcs darcs adrcs cdars dcars cadrs acdrs dacrs adcrs rcdsa crdsa rdcsa drcsa cdrsa dcrsa rcsda crsda rscda srcda csrda scrda rdsca drsca rsdca srdca dsrca sdrca cdsra dcsra csdra scdra dscra sdcra rcasd crasd racsd arcsd carsd acrsd rcsad crsad rscad srcad csrad scrad rascd arscd rsacd sracd asrcd sarcd casrd acsrd csard scard ascrd sacrd rdasc drasc radsc ardsc darsc adrsc rdsac drsac rsdac srdac dsrac sdrac rasdc arsdc rsadc sradc asrdc sardc dasrc adsrc dsarc sdarc asdrc sadrc cdasr dcasr cadsr acdsr dacsr adcsr cdsar dcsar csdar scdar dscar sdcar casdr acsdr csadr scadr ascdr sacdr dascr adscr dsacr sdacr asdcr sadcr
Note: these 'words' (valid or invalid) are all the permutations of the word rcdas. These words are obtained by scrambling the letters in rcdas.