In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4389, 4149, 2537, 7061, '8213', '5373', '611', '4237', 'X', 'W', 'l', 'x', 5321, 4091], ['z', 4749, 2781, 'g', 'l', '8213', '5373', '611', '4237', 'X', 'h', 'z', 'A']