In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[401, 'j', 1563, 'j', 'L', 'w', 'U', 'Q', 'I', 'l', 'w', 1539, 'j', '2321', '8607', 'F', '8479', '5695', 'O', 'z', 'F', 'n', 'b', 'W', '329', '8471', 'L', '9891', 'W', 'h', '2039', '4091', '5041', 'v', '4535', '9925', 'C', 'F', '7793', 'u', 'H', 'Q', 8913, 's', 'i', 9323, 8479, 'U', 'B'], ['L', 'I', 'n', 1185, 5107, 4281, 5267, 'B', 8621, 1023, 9987, 'M', 1157, 9629, 3155, 'w', '2321', '8607', 'F', '8479', '5695', 'O', 'z', 'F', 'n', 'b', 'W', '329', '8471', 'L', '9891', 'W', 'h', '2039', '4091', '5041', 'v', '4535', '9925', 'C', 'F', '7793', 'X', 'j', 8617, 'N', 'a', 'i', 131, 6127, 8097, 'z', 299, 'X']