In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 'V', 'Y', 3415, 'Q', 4049, 'v', 3255, 'a', 'P', 'I', 'X', 6235, 'f', 6175, 1701, 1711, 'c', 'b', '7939', 'z', 'R', '3513', 'w', 'M', 'k', '7275', 'R', 'P', 'U', 'x', '3169', 'Q', '8381', '5077', '1805', '2545', 'C', 'p', 7685, 'y', 3355, 'x', 'F', 'K', 'o', 4805, 'k', 'u', 3407, 3891, 'q', 10029, 1543], ['T', 'r', 'K', 'u', 'x', 'y', 795, 9695, 7231, 'l', 7445, 3493, 6113, 'B', 2747, 539, 'b', '7939', 'z', 'R', '3513', 'w', 'M', 'k', '7275', 'R', 'P', 'U', 'x', '3169', 'Q', '8381', '5077', '1805', '2545', 'C', 's', 7211, 'N', 'K', 3433, 'i', 'p', 3973, 'c', 3195, 525, 7531, 'b', 7171, 9081]