In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7111, 'n', 2943, 'u', 'A', 'f', 'C', 2045, 7457, 8019, 'n', 'm', 'E', 'y', 'F', 'R', 'i', '2363', 'Q', '3821', 'p', '6121', 'f', 'D', 6201, 'H', 'D', 9391, 'f'], ['U', 'R', 'j', 521, 'm', 'E', 'y', 'F', 'R', 'i', '2363', 'Q', '3821', 'p', '6121', 'n', 'j', 'm', 'w', 311, 1133]