In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['y', 2173, 'y', '8779', '5243', '8915', '3035', '4121', 'S', '8573', 'T', 'H', '9329', '3157', 'u', 'u', 'l', '9735', '6457', 'N', 'm', '3249', 'r', '7811', '2487', '9811', 'S', 'R', 'j', 'i', 'd', '5189', 'L', 1389, 2627, 4791, 'Q', 1079], [6593, 'L', 'X', 577, 5553, 9659, 'A', 't', 'p', 'j', 'p', 'q', 6757, 2551, 3929, 'm', 'y', '8779', '5243', '8915', '3035', '4121', 'S', '8573', 'T', 'H', '9329', '3157', 'u', 'u', 'l', '9735', '6457', 'N', 'm', '3249', 'r', '7811', '2487', '9811', 'S', 'R', 'j', 'i', 'd', '5189', 'J', 6479, 'v', 'a', 'l', 7509, 4293, 't', 'C', 6003, 941, 1891, 'c', 8681]