In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['A', 'i', 9703, 1447, 'm', 'x', 2949, 9059, 5837, 9579, 1327, 'W', 161, 9679, 'C', 1317, 3869, 'D', 'C', 's', 8947, 'w', '261', '8829', 'H', 'P', '2067', 'Q', 'f', '3769', '961', 'O', 'y', 'g', '485', '3115', 'P', 'U', 'l', '2355', 'm', 'U', 'n', 'd', '5925', 'O', 'W', 'K', 'h', 2937, 'X', 3217, 'k', 6119, 9309, 'T', 1833, 5793, 'F', 5339, 7593, 'Z', 8591, 'j', 4251, 'D', 'w', 'U', 2943, 'W'], [4497, 'v', 3771, 1979, 8787, '261', '8829', 'H', 'P', '2067', 'Q', 'f', '3769', '961', 'O', 'y', 'g', '485', '3115', 'P', 'U', 'l', '2355', 'm', 'U', 'n', 'd', '5925', 'O', 'W', 'T', 'S', 'P', 7179, 'q', 'c', 649, 'i', 'O', 'L', 'f', 't', 'n', 8083, 'P', 'w', 2597, 'P', 5355, 'C']