In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['k', 'u', 3737, 'O', 8987, 3343, 'c', 'F', 1665, 'R', 'O', 'O', 4509, 3133, 'S', 329, 'b', 571, 5783, '1967', '1273', '2567', '7481', 'q', '5681', 'i', 'O', '5719', '8231', '1183', 'e', '5193', '9751', 'j', 'r', 'e', '4691', 'F', 'i', '1857', 'q', 'C', 'q', 'r', '6321', '621', 'F', 'x', 'o', 'H', 's', 9125, 333, 6205, 193, 671, 'B', 's', 'a', 7373, 923, 2981, 1603, 3091, 'W', 'O', 'S', 'R', 2917, 4177, 8075, 'Z', 'a', 4047, 2557, 4717, 9557, 'R'], ['X', 'c', 'j', 1137, 8657, 3543, 'g', 6041, 'c', 'A', 1605, 1533, 9709, 'z', 'w', 'X', 8551, 'a', 'l', 4859, 'E', '1967', '1273', '2567', '7481', 'q', '5681', 'i', 'O', '5719', '8231', '1183', 'e', '5193', '9751', 'j', 'r', 'e', '4691', 'F', 'i', '1857', 'q', 'C', 'q', 'r', '6321', '621', 'F', 'x', 'o', 'v', 569, 'e', 8123]