In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'v', 8807, 6575, 'g', 'J', 'R', 'S', 'F', '5867', 'R', '9537', 'T', '2443', '5433', 'y', 'Z', 'a', 'e', 'A', 'L', 'Q', 9219, 9171], ['H', 3359, 'D', 'o', 'Y', 'J', 'R', 'S', 'F', '5867', 'R', '9537', 'T', '2443', '5433', 'y', 'j', 715, 801, 'y']