In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['M', 8927, 'c', 8117, 'E', 4085, 'I', 'q', 'x', 9421, 's', 7451, 'j', 'X', 'E', '5921', 'z', '9117', 'F', 'h', '7077', 'a', '9981', '3579', 'w', '4379', '5585', 'S', '5937', 'J', 'S', '3613', '2433', 'j', 'V', 'Z', 2853, 8075, 's', 975, 5131, 2995, 6395, 'b', 2455, 9151, 6629, 'B', 'x', 6797, 'L'], ['C', 'r', 5739, 'A', 6657, 'A', 'P', 'U', 'o', 8615, '5921', 'z', '9117', 'F', 'h', '7077', 'a', '9981', '3579', 'w', '4379', '5585', 'S', '5937', 'J', 'S', '3613', '2433', 'j', 'f', 5941, 4157, 2493, 3779, 'Y', 1091, 's', 9477, 'a', 'U', 4373, 4003, 'I']