In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1209, 'D', 5473, 'c', 'M', 6233, 'V', 117, 'n', 'W', '7685', '165', '2397', 'x', 'c', '2843', 'A', '7139', '7515', '2363', '4333', '2729', '6231', 'w', 'g', 'V', 'm', '6053', 'Z', 'h', 'w', '3897', '3293', '9271', 'Y', '9475', 'm', 'p', 'f', 2895, 4749, 'a'], ['j', 'r', 1041, 's', 7337, 'd', 8223, 5427, 4969, 'H', 'R', 'V', 'k', 'C', 6053, 'p', 'p', 8201, 'i', 'n', 'W', '7685', '165', '2397', 'x', 'c', '2843', 'A', '7139', '7515', '2363', '4333', '2729', '6231', 'w', 'g', 'V', 'm', '6053', 'Z', 'h', 'w', '3897', '3293', '9271', 'Y', '9475', 'm', 'P', 'N', 'c', 'P', 'T', 'Q', 9091, 4969, 6011, 7113, 8685, 'Z', 'm', 'e', 1925, 'V', 'n', 'e', 4075, 'w', 'V', 'Y', 1953, 7057, 'f', 3111, 'U']