In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6417, 7889, 'P', 'Y', 'Z', 'l', 4327, 3879, 'G', 1849, 465, 'U', 'J', '1003', '3303', 'V', 'V', '9015', 'a', '3755', 'k', 'T', 'Y', '297', 'V', '8601', '3687', '7857', '4593', 'T', 'A', '9209', '8071', 'i', 'V', 'R', 'x', 'Q', 'U', 8195, 7793, 'u', 'Z', 'S', 'F', 'd', 2229, 'B', 2877, 'L', 'j', 'i', 559, 'O', 6659, 7477], [8977, 'n', 7221, 'a', 'y', 5847, 4997, 3671, 8231, 9801, 'I', 3739, 'F', 1775, 5507, 'G', 'c', 899, 'l', 'o', 'l', 'p', 369, 1541, 'J', '1003', '3303', 'V', 'V', '9015', 'a', '3755', 'k', 'T', 'Y', '297', 'V', '8601', '3687', '7857', '4593', 'T', 'A', '9209', '8071', 'i', 'V', 'R', 5095, 7227, 1027, 'T', 'o', 'V', 9163, 3785, 'Y', 5699, 'K', 'E', 'Z', 'i', 'A', 'r', 3713, 7033, 3397, 'j', 6761, 'B']