In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['N', 2803, 8625, 'e', 'p', 627, 't', 4761, 7269, 'k', 'r', 8807, 'n', 2725, 5875, 'M', 'Y', 'O', 5057, 'P', 9383, 4975, 'l', 7749, 'J', 'e', '8835', 'c', 'C', 'r', 'C', 'n', 'C', '3505', '9551', '3685', '263', '6265', 'R', 'N', '9143', '6025', 'a', 's', 'a', '5453', 's', 'T', '7473', 'R', '5189', 'j', '1719', 'p', 255, 'o', 'r', 'e', 8707, 'F'], ['u', 'v', 'V', 'b', 'V', 'b', 5605, 'J', 'S', 'b', 'P', 'D', 'E', '8835', 'c', 'C', 'r', 'C', 'n', 'C', '3505', '9551', '3685', '263', '6265', 'R', 'N', '9143', '6025', 'a', 's', 'a', '5453', 's', 'T', '7473', 'R', '5189', 'j', '1719', 'F', 8017, 'N', 7279, 'D', 'N', 'b', 'x', 1951, 'V', 3315, 'O', 5765, 'G', 'h', 'z', 7571, 'Z', 'h', 285, 4703, 271, 'z', 'e']