In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['r', 4395, 'G', 9811, 1329, 'l', 3319, 247, 'W', 't', 'z', 'D', '8637', 'O', '9513', '235', 'l', 'X', 'a', 'E', 'H', 'V', 'Z', '8615', '6217', 'a', '4203', 'x', '6365', '9165', '7781', '361', 'J', 'g', 'y', 7385, 7173, 1535, 'f', 5567, 'W', 'x', 'Q'], ['K', 6869, 6527, 'Z', 2723, 'M', 45, 'z', 'O', 'u', 2375, 6939, 'e', 8909, 'E', 'r', 6397, 'e', 3157, '8637', 'O', '9513', '235', 'l', 'X', 'a', 'E', 'H', 'V', 'Z', '8615', '6217', 'a', '4203', 'x', '6365', '9165', '7781', '361', 'J', 'g', 'A', 9979, 'q', 'w', 'Q', 8749, 'u', 4623, 1989]