abaca baaca aabca aabca baaca abaca abcaa bacaa acbaa cabaa bcaaa cbaaa aacba aacba acaba caaba acaba caaba bacaa abcaa bcaaa cbaaa acbaa cabaa abaac baaac aabac aabac baaac abaac abaac baaac aabac aabac baaac abaac aaabc aaabc aaabc aaabc aaabc aaabc baaac abaac baaac abaac aabac aabac abcaa bacaa acbaa cabaa bcaaa cbaaa abaca baaca aabca aabca baaca abaca acaba caaba aacba aacba caaba acaba bcaaa cbaaa bacaa abcaa cabaa acbaa aacab aacab acaab caaab acaab caaab aaacb aaacb aaacb aaacb aaacb aaacb acaab caaab aacab aacab caaab acaab acaab caaab aacab aacab caaab acaab bacaa abcaa bcaaa cbaaa acbaa cabaa baaca abaca baaca abaca aabca aabca bcaaa cbaaa bacaa abcaa cabaa acbaa acaba caaba aacba aacba caaba acaba
Note: these 'words' (valid or invalid) are all the permutations of the word abaca. These words are obtained by scrambling the letters in abaca.