In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1425, 525, 'u', 'b', 'I', 1941, 'O', 3203, 4785, 989, 7327, 'i', 's', '4019', 'F', 'M', 'S', 'Y', 's', 'E', 'D', 'm', 'E', 'j', 'N', '8227', 'C', 'X', '6303', '8691', '4223', 'R', 5957, 3445, 7895, 9543, 1421, 5631, 'k', 5789, 249, 'c', 3631, 'C'], ['m', 'q', 'i', 's', '4019', 'F', 'M', 'S', 'Y', 's', 'E', 'D', 'm', 'E', 'j', 'N', '8227', 'C', 'X', '6303', '8691', '4223', 'b', 7931, 9975, 4671, 'g', 'l', 'C', 3587, 777, 'w', 4115, 'o']