In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6373, 1001, 7791, 'p', 'm', 5273, 'z', 'z', 'u', '1947', 'K', '8573', '9159', '5453', '5617', 'x', 'j', 'W', '759', 'I', 'V', 'p', 'l', '8295', '4719', 'h', '7829', '9917', 'x', '9141', '7507', 'e', 'b', 'a', '6677', '6811', '2079', 'L', 'J', 'K', 359, 'K', 'b', 'J', 6163, 'l', 5875, 9819, 2299, 1259, 299, 8477, 'U', 'f', 399, 4117, 'R', 7457, 'h', 'I', 9863, 9875, 411], ['N', 'w', 'M', 5791, 6073, 'Q', 3079, 'z', 'u', '1947', 'K', '8573', '9159', '5453', '5617', 'x', 'j', 'W', '759', 'I', 'V', 'p', 'l', '8295', '4719', 'h', '7829', '9917', 'x', '9141', '7507', 'e', 'b', 'a', '6677', '6811', '2079', 'N', 'd', 7011, 1341, 'W', 2261, 4797, 9961, 'u', 'O', 8929, 4257, 'i', 1761, 4515, 7673, 'r', 'a', 'V', 'B', 'X', 'x', 5651, 'y', 1483, 3351]