In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7451, 8939, 'i', 'C', 'o', 'i', 'q', 'I', 'h', 5669, 6103, 8179, 1815, 'P', 'G', 5921, 'X', 'p', 'f', 8153, 321, 8425, '1863', 'U', 'g', 'W', '8207', '7437', 'F', 'C', '9519', 'i', 'J', '1277', 'e', '2279', '8771', '731', '339', '1659', '5989', 'j', 'p', 'v', '59', 'b', 'X', '9445', '1419', '9803', '1361', 'Q', 'A', 3807, 'Q', 1953, 7207, 'j', 7843, 'O', 'S', 'k', 'N', 'T', 'K', 9911, 1837, 'b', 6729, 'H', 5837, 'N', 'a', 'x', 8677], [8379, 655, 6697, 'D', 'e', 'y', 'u', 'n', 9099, 'j', 4487, 'S', 'P', 2587, 'S', 'L', 'X', 'p', 6397, 3813, 'u', 5295, 'z', 'R', 'k', '1863', 'U', 'g', 'W', '8207', '7437', 'F', 'C', '9519', 'i', 'J', '1277', 'e', '2279', '8771', '731', '339', '1659', '5989', 'j', 'p', 'v', '59', 'b', 'X', '9445', '1419', '9803', '1361', 'r', 'k', 425, 7499, 161, 9015, 2573, 3605, 'P', 8881, 'h', 6559, 'l', 399]