In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 3323, 't', 6049, 8457, 'O', 'p', 'B', '9989', '3325', 'y', '1605', 'N', '9991', 'J', 'M', '7731', '4623', 'P', 'V', 'H', 'B', 'G', 'q', 7453, 4565, 'W', 261, 7325, 5121, 9249, 'l', 'P', 4835, 'r', 6897, 5517], ['y', 5153, 'g', 2665, 'N', 'u', 'l', 'g', 1437, 5167, 'U', 'H', 395, 2041, 'O', 'p', 'B', '9989', '3325', 'y', '1605', 'N', '9991', 'J', 'M', '7731', '4623', 'P', 'V', 'H', 'B', 'q', 'W', 4257, 7095, 2771, 7471, 'i', 4767, 2757, 6611, 4217, 7887, 'H', 'j', 8861]