In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6537, 'x', 'n', 6569, 'f', 9, 'u', 'P', '9609', 'c', 'J', '5487', 'v', '3149', '7071', '9043', 'u', 'L', '6989', '3401', 'z', '8473', 'V', 'O', 'p', 6661, 'y', 'K', 7703, 'm', 6049], ['G', 5713, 9915, 'm', 'o', 'D', 8907, 7583, 'E', 6155, 'T', 'V', 'S', 8737, 5705, 'u', 'P', '9609', 'c', 'J', '5487', 'v', '3149', '7071', '9043', 'u', 'L', '6989', '3401', 'z', '8473', 'V', 'O', 't', 4995, 'Y', 'm', 'S', 'y', 'g', 'a', 5015, 8087, 7493, 5749, 8903, 4269, 'D', 'z', 2571, 529]