In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['R', 2247, 1313, 'D', 'l', '4803', 'P', 'w', 'O', '6733', '3141', 'H', 'l', '2999', '2407', '8191', '2065', '959', '8805', '9427', 'r', '6883', 'T', '6697', 'Q', '7533', 'y', '1535', 'A', '7331', 'j', 2139, 9075, 6061, 'U', 6493, 'w', 'U', 4373, 2569, 4211, 'x', 197, 'P', 9647, 'T', 5949, 4933, 'L', 'l', 1045], ['b', 4717, 'b', 'C', 9665, 'l', '4803', 'P', 'w', 'O', '6733', '3141', 'H', 'l', '2999', '2407', '8191', '2065', '959', '8805', '9427', 'r', '6883', 'T', '6697', 'Q', '7533', 'y', '1535', 'A', '7331', 's', 'V', 'c', 5155, 'L', 7903, 4133, 165, 'R', 'j']