In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['m', 'R', 1791, 'v', 5547, 'p', 'j', 5069, 8061, 'G', 's', 1521, 2285, 1963, 'n', 'a', '4537', 'X', 'Z', '8981', 'W', 'u', '827', '4681', '2433', '3179', 'p', 'a', '4675', 'r', '3527', '3021', '6363', 'o', 'E', 'a', 6921, 'e', 7497, 'Y', 'p', 451, 'f', 6413, 3785, 1601, 3193, 'i'], [9375, 2255, 'j', '4537', 'X', 'Z', '8981', 'W', 'u', '827', '4681', '2433', '3179', 'p', 'a', '4675', 'r', '3527', '3021', '6363', 'o', 'E', 'f', 'K']