In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 4209, 3469, 'V', 3137, 'D', 1521, 'l', 'N', 'b', 'l', '9123', '4131', '3559', 'v', 'A', 's', '85', 'C', '9187', '2981', 'e', 'k', '4085', '677', '3227', 'h', 'o', '3073', 'o', '6179', 'L', '1609', '4151', 'I', 'i', 7277, 3209, 8829, 9441, 3801, 'U'], ['m', 1899, 'C', 3121, 'X', 1307, 'X', 4495, 'P', 147, 5961, 'l', 'L', 'b', 6411, 'V', 'W', 'Q', 'd', 7317, 'u', 'f', '9123', '4131', '3559', 'v', 'A', 's', '85', 'C', '9187', '2981', 'e', 'k', '4085', '677', '3227', 'h', 'o', '3073', 'o', '6179', 'L', '1609', '4151', 'I', 'D', 1043, 5379, 'S', 4505, 'p', 7121, 4611, 'I', 'K', 4917, 'h', 3707, 'U', 'c']