In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4841, 8607, 8217, 4437, 4265, '7663', '5083', '2453', '8427', '8927', 'p', 'n', '8197', '6213', '1621', '6925', '7453', '3607', 'U', 'E', 'E', '1795', 'E', 'a', 'S', 'Q', 'D', 'g', 'F', 'u', 'k', 'j', 'K', 'S'], [9501, 5123, 6129, 'Q', 'L', 'o', 2975, 'J', 2075, 'V', 'X', 1409, 365, 'L', 4277, 2327, 'r', 'b', 4425, 'Q', 'B', 'x', 'G', '7663', '5083', '2453', '8427', '8927', 'p', 'n', '8197', '6213', '1621', '6925', '7453', '3607', 'U', 'E', 'E', '1795', 'E', 'a', 'S', 'Q', 'D', 'g', 'n', 'H']