In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 1453, 7721, 1625, 'U', 'f', 5755, 'd', 'b', 1239, 'm', 3449, 8479, 7249, 3431, 'T', 1189, 'l', 'm', 'k', 3267, 7257, 5183, 3831, 'o', 'U', '9215', 'o', 'Z', '5389', '279', '5749', '9173', '1549', 't', '1689', '5143', 'C', 'q', '1217', 'B', '8399', 'W', 'a', '8469', '2175', 'x', 'h', '6647', 'A', 'Q', 1137, 'C', 'F', 'm', 4683, 9459, 4099, 'i', 'L', 'j', 5875, 'i', 'v', 1671], [4781, 8375, 7231, 'V', 6663, 9875, 'J', 5155, 'G', 2489, 'L', 987, 2293, 'q', 5135, 6363, 'b', 821, 'i', 6783, 'a', 7469, 'u', 4709, 'o', 'U', '9215', 'o', 'Z', '5389', '279', '5749', '9173', '1549', 't', '1689', '5143', 'C', 'q', '1217', 'B', '8399', 'W', 'a', '8469', '2175', 'x', 'h', '6647', 'A', 'W', 'V', 8035, 'I', 'I', 'b', 6919, 'J', 'Q', 'g', 'I', 't', 6413, 7383]