In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 939, 'l', 4543, 3019, 'B', 4755, 'K', 'X', 'f', '1535', '4899', '3143', '8929', '7693', 'l', '9247', 'q', '4215', '9893', '8719', 'd', 'O', 'l', '8403', 'n', '9091', 'K', 's', '4211', 'K', '7265', '2237', '3455', 'g', 'W', '2847', 'V', 8621, 'h', 'Y', 'x', 'E', 'w', 's', 'R', 3651, 'O', 7749, 'I', 2351, 5871, 'r', 1381, 'G', 'p', 'R', 253, 'J'], [3881, 4239, 'p', 'X', 1025, 1847, 9447, 9405, 7049, 'w', '1535', '4899', '3143', '8929', '7693', 'l', '9247', 'q', '4215', '9893', '8719', 'd', 'O', 'l', '8403', 'n', '9091', 'K', 's', '4211', 'K', '7265', '2237', '3455', 'g', 'W', '2847', 'E', 'a', 1069, 455, 'F', 9823, 6603, 1757, 'O', 'f']