In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[257, 'o', '7097', '5913', 'U', 'Z', '3503', 'H', '4393', 'F', 'J', '4291', '3009', 'M', 'g', 'b', '4645', 'B', 'b', 'z', 'H', 2381, 3345, 'K'], ['C', 4147, 895, 181, 'k', 'u', 's', 'o', 'R', '7097', '5913', 'U', 'Z', '3503', 'H', '4393', 'F', 'J', '4291', '3009', 'M', 'g', 'b', '4645', 'B', 'b', 'Q', 407, 'W', 4639, 'v', 8525, 'v', 'U', 'B']