In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[927, 5763, 'L', 1209, 757, 'd', 'H', '2777', 'G', '7725', '7359', '2117', '447', 'p', '3883', '6539', 'Y', 'o', 909, 'F', 'f', 1939, 1413, 1879, 5493], [1527, 4443, 'M', 3203, '2777', 'G', '7725', '7359', '2117', '447', 'p', '3883', '6539', 'F', 2451, 7115, 5441, 'e']