In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6901, 'f', 3943, 2189, 'H', 'l', 'f', 'j', 't', 'p', 8233, 9063, 'Q', 2553, 'k', 1105, 'f', '8627', '9759', '7785', '7509', 'j', 'j', '209', '1575', 'v', 'k', '57', 'f', '8563', 'y', 'v', 'V', 'F', '5793', 'm', 'n', 'u', '8695', 'R', 'U', 'D', 'Y', 'i', 335], [5059, 5457, 'r', 'm', 4439, 'w', 'f', 'S', 'c', 2963, 'f', '8627', '9759', '7785', '7509', 'j', 'j', '209', '1575', 'v', 'k', '57', 'f', '8563', 'y', 'v', 'V', 'F', '5793', 'm', 'n', 'u', '8695', 'R', 'U', 'O', 6579, 'y', 'p', 5397, 'y', 2091, 'W']