In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 'B', 'x', 2073, 4471, 5783, 7581, 1469, 'G', 'X', '75', 'z', 'V', '5745', '1619', 'D', 'l', 'u', 'a', '5401', 'H', 'L', 5243, 'a', 7049], ['D', 'V', 'Q', 'R', 231, 'f', 'V', 'G', 'X', '75', 'z', 'V', '5745', '1619', 'D', 'l', 'u', 'a', '5401', 'H', 's', 6997, 9549, 'Z', 'C']