In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2213, 3605, 'p', 'W', 'n', 1615, 7943, 2621, 5439, 5991, 'z', 'i', 'x', 2693, 8219, 'O', 'p', 'W', '5919', '2269', '9471', '7797', '8047', '2133', 'j', '325', 'Q', 'z', '611', 'c', 'u', 'o', 'U', 'Q', 'a', '8531', '5805', '4983', '2443', 't', 's', 'I', '6697', '7081', '1109', 'I', 'B', 'H'], [7021, 'l', 6895, 'g', 9187, 8299, 167, 5397, 'g', 'l', 'K', 'n', 'z', 'l', 'h', 5001, 'V', 'E', 1523, 7597, 'y', 8011, 'U', 511, 'v', 1837, 'f', 7983, 5771, 'p', 'W', '5919', '2269', '9471', '7797', '8047', '2133', 'j', '325', 'Q', 'z', '611', 'c', 'u', 'o', 'U', 'Q', 'a', '8531', '5805', '4983', '2443', 't', 's', 'I', '6697', '7081', '1109', 'W', 'w', 'm', 'N', 2739, 'Y', 'T', 475, 'o', 7903, 2373, 'v', 'N', 4559, 7237, 'v', 'G']