In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['I', 'T', 9743, 9717, 'c', 'U', 'l', '317', '867', '3497', '1127', '7109', 'g', '2499', 'p', 't', 'W', '7411', 'f', '9381', '8213', 'p', '9799', '841', '3715', 'C', '2707', 'v', 'N', 'R', 'N', 'V', 'a', 'R', 'X', 'a', 8269, 2615, 9103, 8151, 'K', 799, 7321], [2269, 's', 4503, 'x', 1605, 'w', 2227, 'd', 8475, 'K', 2921, 'C', 2437, 5321, 'c', 2145, 2815, 2939, 'o', 629, 'w', 'S', 5971, 'Z', 'c', 'U', 'l', '317', '867', '3497', '1127', '7109', 'g', '2499', 'p', 't', 'W', '7411', 'f', '9381', '8213', 'p', '9799', '841', '3715', 'C', '2707', 'v', 'N', 'R', 'N', 'V', 'm', 'g', 6487, 5253, 885, 1647, 2703, 985, 'b', 9417, 'f', 4031, 4271, 'd', 'X', 'b', 4669, 'c', 'r', 389, 'P', 2205, 3225, 'm', 'H']