rcala crala racla arcla carla acrla rclaa crlaa rlcaa lrcaa clraa lcraa ralca arlca rlaca lraca alrca larca calra aclra clara lcara alcra lacra rcaal craal racal arcal caral acral rcaal craal racal arcal caral acral raacl aracl raacl aracl aarcl aarcl caarl acarl caarl acarl aacrl aacrl rclaa crlaa rlcaa lrcaa clraa lcraa rcala crala racla arcla carla acrla rlaca lraca ralca arlca larca alrca clara lcara calra aclra lacra alcra ralac arlac rlaac lraac alrac larac raalc aralc raalc aralc aarlc aarlc rlaac lraac ralac arlac larac alrac alarc laarc aalrc aalrc laarc alarc calar aclar claar lcaar alcar lacar caalr acalr caalr acalr aaclr aaclr claar lcaar calar aclar lacar alcar alacr laacr aalcr aalcr laacr alacr
Note: these 'words' (valid or invalid) are all the permutations of the word rcala. These words are obtained by scrambling the letters in rcala.