In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['X', 4261, 'm', 7859, 4443, 287, 7605, 'X', 'z', 6017, 2097, 2447, 8915, 4657, 375, 81, 'I', 'C', 'T', 7455, 7461, 'W', 'e', 'n', 'O', '1627', '5687', '421', '1005', '2703', '2689', '2227', '6679', '5031', 'y', 'n', '2949', 'j', '7753', '1135', 'A', 't', 'b', 'x', 'B', 'D', 2439, 'Q', 'l', 'D', 3245], ['J', 'o', 3361, 8709, 8719, 'e', 'n', 'O', '1627', '5687', '421', '1005', '2703', '2689', '2227', '6679', '5031', 'y', 'n', '2949', 'j', '7753', '1135', 'A', 't', 'b', 'x', 'B', 'g', 'r', 4351, 'F', 2243, 8191, 5111, 6683, 'Y', 3647, 't', 'f', 2885, 5435, 7467, 'S', 9159, 8145, 'H', 'z']