In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6579, 2507, 7995, 'd', 2469, '7029', 'u', '6601', '673', 'O', 'G', '393', '7889', 'o', '6149', 'x', 'B', 'Z', 2069, 1863, 'z', 'N', 'u', 191], [1, 'a', 6713, 7397, 'S', 'i', 'w', '7029', 'u', '6601', '673', 'O', 'G', '393', '7889', 'o', '6149', 'x', 'B', 'I', 2973, 'P', 8767]