In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 5437, 3889, 6177, 'a', 25, 8823, 'h', 1553, 'k', 'g', 'p', 'R', '1121', 'd', 'y', 'd', 'e', 'u', 'z', '8607', 'V', 'K', 'b', '8341', 'p', '9005', '3859', 'r', 'r', 5189, 125, 3873, 'v', 'r', 3345, 's', 5737, 4563, 'k', 'q', 8895], ['x', 'p', 'n', 5259, 'J', 3743, 'U', 'R', '1121', 'd', 'y', 'd', 'e', 'u', 'z', '8607', 'V', 'K', 'b', '8341', 'p', '9005', '3859', 'r', 'd', 1903, 'j', 'D', 3089, 'H', 'r', 'o', 'Z', 'F', 1791, 'x', 'J', 3899, 'd', 1225, 2637]