In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7207, 'm', 'z', 'c', 'i', 'c', 'e', 'W', 8215, 'V', '4911', '9783', 'b', 'f', 'C', '6411', 'B', 'd', '7749', 'u', '7525', '5955', '7077', 'G', '4157', 'M', 5727, 'R', 'z', 1941, 9209, 'A', 1737, 'b', 'L', 7731, 'R', 3273], [4835, 'i', 'L', 'x', 6957, '4911', '9783', 'b', 'f', 'C', '6411', 'B', 'd', '7749', 'u', '7525', '5955', '7077', 'G', '4157', 'g', 'F', 1637, 'n', 1163, 'Y', 'K', 721, 8133, 475]