In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 'p', 401, 'S', 9797, 'Y', 7567, 8997, 2951, 'O', 3291, 'o', 1161, 1877, 3181, 's', 'Y', 6421, 2791, 'i', '1433', 'Y', 'E', 'z', 'h', '8885', 'd', '6519', 'H', '8829', 'y', 'z', '1121', 'D', 'k', '9257', '2695', 'A', '9143', 'S', 'm', '4365', 'd', 'o', 'Q', 't', 'S', 'I', 'y', 6799, 4231, 8391, 'b', 'u', 1607, 4441, 1151, 1053, 'B', 2481, 2145, 899], ['q', 'R', 'k', 8907, 445, 'w', 'g', 2049, 'R', 2327, 'Y', '1433', 'Y', 'E', 'z', 'h', '8885', 'd', '6519', 'H', '8829', 'y', 'z', '1121', 'D', 'k', '9257', '2695', 'A', '9143', 'S', 'm', '4365', 'd', 'o', 'Q', 'v', 1475, 6671, 'z', 'W', 'x', 'i', 'I', 'Z', 'N', 5711, 6001, 689, 2863, 'f', 'L', 'C', 'k', 'n', 'n', 'T', 8361, 'y', 4955]