In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'c', 6491, 8343, 'f', 'Z', 'H', 5535, 'p', 'i', 657, 'i', 'o', 5979, 'o', 'w', 'b', 'N', 8881, 'C', '3435', 'r', '7823', '2445', '5409', 'Y', 's', '5585', '8993', '9621', 'f', 't', '6337', 'A', '3329', '5931', '4151', 'T', 'T', 'J', '7305', '995', '8545', '5727', 'q', 3047, 'V', 'v', 'A', 8947, 'F', 7161, 'C', 4121, 8459, 2615], [2829, 9921, 8167, 'C', '3435', 'r', '7823', '2445', '5409', 'Y', 's', '5585', '8993', '9621', 'f', 't', '6337', 'A', '3329', '5931', '4151', 'T', 'T', 'J', '7305', '995', '8545', '5727', 'm', 2137, 'u', 'S', 5303, 191, 'u', 2599, 1591, 4019, 'E', 'G', 6147, 3803, 'i', 3997, 'N', 'x', 'l', 7013, 'j', 1881, 7295, 'P']