In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4749, 'f', 6175, 'b', 'm', 1409, 'I', 8119, 'N', '7923', '4627', '9277', '175', 'O', '7215', 'm', 'X', '55', 'v', 'k', '6129', 'r', '1825', 'H', '8991', 'u', 't', 'x', 2923, 'X', 'G', 'Q', 'a', 'B', 2463, 'p', 7449, 8399, 'Z', 1655, 'g', 3215, 'q', 'I'], [2101, 'o', 4705, 'z', 1519, 'f', 'q', 'p', 4723, 495, 'D', 'N', '7923', '4627', '9277', '175', 'O', '7215', 'm', 'X', '55', 'v', 'k', '6129', 'r', '1825', 'H', '8991', 'u', 'j', 'C', 9909, 'X', 3261, 'q', 'X', 'L', 'Q', 't', 'N', 2241]