In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['c', 'Q', 7339, 'h', 'X', 6673, 'r', 'l', 4327, '195', '6179', 'm', 'j', 'p', 'b', 'B', 'O', 'Q', 'A', '6257', 'C', 'Y', 2099, 'v', 6013, 'w', 'E', 8355, 1977, 5921, 'D', 6539], ['Y', 8055, 9093, 'Z', 3517, 'n', 'E', 323, 'M', '195', '6179', 'm', 'j', 'p', 'b', 'B', 'O', 'Q', 'A', '6257', 'C', 'e', 3291, 6959, 'Y', 7471, 3195, 'n', 'd', 5725, 3673, 'u']