In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3253, 2793, 'p', 'y', 'H', 7325, 'X', '8041', 'v', '2647', '6905', '9945', 'd', '7243', '4195', '2131', '1607', 'U', 'D', '9197', 'G', 'z', 'g', '7111', '6599', 'P', 'A', '8025', 'D', 'L', 'e', 8269, 269, 'r', 'i', 3431, 2303, 2175, 305, 2725, 'O', 'R', 'j', 9375, 2705, 'k'], ['K', 'v', 'N', 'U', 10029, 6189, 7879, 215, 9449, 7557, 'X', '8041', 'v', '2647', '6905', '9945', 'd', '7243', '4195', '2131', '1607', 'U', 'D', '9197', 'G', 'z', 'g', '7111', '6599', 'P', 'A', '8025', 't', 7729, 9235, 'z', 3301, 'E', 3925, 1015, 'n', 'U']