In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6679, 'l', 'u', 6159, 's', 'G', 4823, 'v', '1765', 'b', '5121', 'f', '6619', '5945', '9585', 'k', 'U', '3357', '5611', 'y', 'K', 'n', 't', 'Z', '7221', '7219', 'h', 'i', 'U', 'h', 'y', '8215', '2265', 'x', '5737', '187', 'N', 4383, 5285, 7687, 'y', 'G', 'i', 9371, 7575, 7543, 7415, 'd', 8089, 'o', 9825, 'X', 1371, 'X', 'w', 8195, 3911, 'M', 'x', 3379, 6421, 'a'], ['n', 'W', 'D', 'b', 'j', '1765', 'b', '5121', 'f', '6619', '5945', '9585', 'k', 'U', '3357', '5611', 'y', 'K', 'n', 't', 'Z', '7221', '7219', 'h', 'i', 'U', 'h', 'y', '8215', '2265', 'x', '5737', '187', 'D', 1275, 'v', 2767, 'T', 9263, 'g', 'o', 'I', 5149, 'X', 9353, 'N', 'W', 'e', 3995, 3681, 821, 5081, 'T', 6101, 'z', 'y', 9077, 8599, 9339, 'L', 8807]