In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1143, 'T', 5631, 'A', 251, 5155, 's', '6561', '4929', 'n', '8937', 'L', '2735', 'W', '1281', 'R', 'G', 'm', 5957, 'm', 'O', 5611, 'i', 'j', 'n', 'l', 'o'], ['M', 687, 3851, 'H', 'B', 1837, 5913, '6561', '4929', 'n', '8937', 'L', '2735', 'W', '1281', 'R', 'G', 'j', 'K', 'd', 7241, 'N', 's', 5921]