In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9575, 'B', 2013, 'J', 'e', 7839, 1517, 1505, 'T', 1109, 5639, 'o', '4409', 'L', '9207', '2481', 'W', '5287', 'h', 'b', 'h', 'T', 'g', 'k', '5867', 'p', '3705', '1257', '4107', '3389', 'a', 'r', 'j', 3455, 4281, 7515, 2685, 617, 'M', 'f', 1943, 2675, 'L', 'U'], [1429, 2865, 'Y', 745, '4409', 'L', '9207', '2481', 'W', '5287', 'h', 'b', 'h', 'T', 'g', 'k', '5867', 'p', '3705', '1257', '4107', '3389', 'a', 'r', 'F', 'r', 'w', 3275, 'x', 'y', 'R', 'N', 'P', 4961, 'm', 'v', 'L', 'g', 'B']