oacca aocca ocaca coaca acoca caoca oacca aocca ocaca coaca acoca caoca occaa cocaa occaa cocaa ccoaa ccoaa accoa cacoa accoa cacoa ccaoa ccaoa oacac aocac ocaac coaac acoac caoac oaacc aoacc oaacc aoacc aaocc aaocc ocaac coaac oacac aocac caoac acoac acaoc caaoc aacoc aacoc caaoc acaoc oacac aocac ocaac coaac acoac caoac oaacc aoacc oaacc aoacc aaocc aaocc ocaac coaac oacac aocac caoac acoac acaoc caaoc aacoc aacoc caaoc acaoc occaa cocaa occaa cocaa ccoaa ccoaa ocaca coaca oacca aocca caoca acoca ocaca coaca oacca aocca caoca acoca ccaoa ccaoa cacoa accoa cacoa accoa accao cacao accao cacao ccaao ccaao acaco caaco aacco aacco caaco acaco acaco caaco aacco aacco caaco acaco ccaao ccaao cacao accao cacao accao
Note: these 'words' (valid or invalid) are all the permutations of the word oacca. These words are obtained by scrambling the letters in oacca.