raids arids riads irads airds iards radis ardis rdais drais adris daris ridas irdas rdias drias idras diras aidrs iadrs adirs dairs idars diars raisd arisd riasd irasd airsd iarsd rasid arsid rsaid sraid asrid sarid risad irsad rsiad sriad israd sirad aisrd iasrd asird saird isard siard radsi ardsi rdasi drasi adrsi darsi rasdi arsdi rsadi sradi asrdi sardi rdsai drsai rsdai srdai dsrai sdrai adsri dasri asdri sadri dsari sdari ridsa irdsa rdisa drisa idrsa dirsa risda irsda rsida srida isrda sirda rdsia drsia rsdia srdia dsria sdria idsra disra isdra sidra dsira sdira aidsr iadsr adisr daisr idasr diasr aisdr iasdr asidr saidr isadr siadr adsir dasir asdir sadir dsair sdair idsar disar isdar sidar dsiar sdiar
Note: these 'words' (valid or invalid) are all the permutations of the word raids. These words are obtained by scrambling the letters in raids.