In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[261, 'P', 'T', 5901, 9689, 2941, 7201, 'B', 'c', 'Q', 'V', 'q', '7405', 'p', '3743', '6597', '117', '9001', 'Q', 'R', 'z', 'W', '6829', 'v', 'b', 'C'], ['y', 'G', 6603, 'P', 'f', 'f', 641, 777, 'L', 'o', 'j', 9803, 1513, 8939, 'Q', 'V', 'q', '7405', 'p', '3743', '6597', '117', '9001', 'Q', 'R', 'z', 'W', '6829', 'v', 'z', 'M', 'h', 'j', 'W', 3287, 'U', 1003, 'e', 'O', 'S']