In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['A', 'r', 'E', 4087, 'z', 'o', 2455, 'V', '9893', 'M', '4411', '9237', '7445', '8527', '237', '4883', '6337', 'W', '3333', '2145', '5041', 'b', 'k', 'n', '2029', '4769', '8863', 'y', 'j', '7075', '1391', 'N', 7267, 'U'], [5171, 7123, 'F', 'O', 'k', 'e', 8577, 4807, 1081, 7821, 'h', 'Z', 'C', 'p', 3255, 6959, 'H', 'I', '9893', 'M', '4411', '9237', '7445', '8527', '237', '4883', '6337', 'W', '3333', '2145', '5041', 'b', 'k', 'n', '2029', '4769', '8863', 'y', 'j', '7075', '1391', 't', 'H', 4629, 'k', 'K', 'J', 8873, 'h', 1855, 'z', 'i']