ddick ddick didck iddck didck iddck ddcik ddcik dcdik cddik dcdik cddik dicdk idcdk dcidk cdidk icddk ciddk dicdk idcdk dcidk cdidk icddk ciddk ddikc ddikc didkc iddkc didkc iddkc ddkic ddkic dkdic kddic dkdic kddic dikdc idkdc dkidc kdidc ikddc kiddc dikdc idkdc dkidc kdidc ikddc kiddc ddcki ddcki dcdki cddki dcdki cddki ddkci ddkci dkdci kddci dkdci kddci dckdi cdkdi dkcdi kdcdi ckddi kcddi dckdi cdkdi dkcdi kdcdi ckddi kcddi dickd idckd dcikd cdikd icdkd cidkd dikcd idkcd dkicd kdicd ikdcd kidcd dckid cdkid dkcid kdcid ckdid kcdid ickdd cikdd ikcdd kicdd ckidd kcidd dickd idckd dcikd cdikd icdkd cidkd dikcd idkcd dkicd kdicd ikdcd kidcd dckid cdkid dkcid kdcid ckdid kcdid ickdd cikdd ikcdd kicdd ckidd kcidd
Note: these 'words' (valid or invalid) are all the permutations of the word ddick. These words are obtained by scrambling the letters in ddick.