In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['j', 'n', 4853, 'e', 2317, 'Z', 'b', 3229, 7643, 'Q', 2477, 1255, 2791, 't', 'n', '7741', '7225', '8059', 'H', '4447', 'I', 'c', '8927', 's', '6633', 'g', 'm', '2273', '7157', 'w', '7613', '8607', '2503', 'i', 'q', 4141, 1071, 2611, 'r', 'k', 5579, 1549, 'm', 'i', 'H', 3743, 'k', 447], ['H', 6371, 'y', 'm', 1809, 2269, 'E', 'S', 1841, 9861, 'a', 'u', 'Z', 'p', 501, 6263, 'c', 'g', '7741', '7225', '8059', 'H', '4447', 'I', 'c', '8927', 's', '6633', 'g', 'm', '2273', '7157', 'w', '7613', '8607', '2503', 'k', 'i', 4973, 'b', 9037]