In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7837, 'Q', 'y', 6831, 963, 1559, 2557, 213, 9459, 1347, 'A', 7155, 'n', 1749, 5101, 4237, 'H', 'Z', 6671, 5219, '7241', '1189', '3891', 'B', 'N', 'u', '1929', 'h', 'A', '2289', '875', 'x', 'S', 'i', '2633', 'f', 'i', 'k', 'D', 'n', 'y', 'G', 'P'], ['h', 'd', 'X', 2159, 907, 4873, 6581, 4311, 1367, 8363, 8655, 'e', 7945, 'E', 'v', 1249, 7179, 'b', 9937, '7241', '1189', '3891', 'B', 'N', 'u', '1929', 'h', 'A', '2289', '875', 'x', 'S', 'i', '2633', 'f', 'i', 'k', 'D', 'n', 'y', 'X', 4581]