In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

Let me give you an example: [5797, 8817, '8297', 'b', 'U', 'b'], [5843, 8809, '8297', 'b', 'W', 'C']
The answer to this example can be: 8297, b
Here is why: Here, '8297, b' is the longest common subsequence in both the input lists [5797, 8817, '8297', 'b', 'U', 'b'] and [5843, 8809, '8297', 'b', 'W', 'C'].

OK. solve this:
['l', 6817, 'G', 3995, 6097, 671, 6515, 'l', 9431, 'f', 'd', 'V', 'R', 1157, 2615, 'e', 9475, 6407, 'Y', 's', 'R', 'L', 'k', '9657', '2833', 'M', '9947', 'a', '6445', '1379', '949', '2579', '1179', 'n', '7809', '5051', 'd', '6765', 'm', '821', '9863', '9623', '8883', '8537', 'x', 'W', 'i', 'i', 5261, 'w', 'M', 'C', 4631, 'i', 5287, 6657, 'W', 251, 'Y', 'j'], ['R', 1845, 'U', 1173, 3165, 4753, 3813, 9565, 'N', 'Y', 2027, '9657', '2833', 'M', '9947', 'a', '6445', '1379', '949', '2579', '1179', 'n', '7809', '5051', 'd', '6765', 'm', '821', '9863', '9623', '8883', '8537', 'x', 'W', 'i', 'm', 'q', 883, 7285, 'S', 477, 'N', 7749, 'T', 4667, 4753, 2045, 5619, 9927, 'w', 'I', 'f', 7363, 1175, 'i', 6291, 'w', 'h', 'z']
Answer:
9657, 2833, M, 9947, a, 6445, 1379, 949, 2579, 1179, n, 7809, 5051, d, 6765, m, 821, 9863, 9623, 8883, 8537, x, W, i