In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['z', 957, 9811, 'v', 4455, 7471, 5495, 'n', 3749, 1393, 'c', 'O', '4411', 'G', '4845', '2481', 'X', '8495', '8171', '2073', '7783', 'y', 'Y', '249', 'm', 's', '1623', 'D', '7743', 'a', '1483', '1281', 'e', '5605', '3413', 'w', '6619', '2609', 'y', '8087', 'j', 'm', 'z', 4115, 5373, 'z', 'G', 'B', 'z', 7001, 'x', 2963, 'I', 6465, 7511, 6439, 'b'], [2191, 3213, 9193, 'u', 5345, 6535, 'w', 'm', 'r', 2211, 1117, 'y', '4411', 'G', '4845', '2481', 'X', '8495', '8171', '2073', '7783', 'y', 'Y', '249', 'm', 's', '1623', 'D', '7743', 'a', '1483', '1281', 'e', '5605', '3413', 'w', '6619', '2609', 'y', '8087', 'j', 'r', 17, 'G', 'g']