In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4531, 'P', 'w', 't', 7013, 'K', 'v', 'D', 'x', '3895', 'Y', 'b', '2073', '649', '8365', 'M', 'L', 'O', 'i', '7773', '7901', '2485', '6777', 'U', '6679', 'a', 1039, 7061, 3389, 4395, 'd', 3835, 4261, 69, 'H', 7099, 2933, 2263, 'J', 'k', 8493, 'w'], ['C', 8699, 3143, 5191, 4963, 2845, 'a', 'D', 'x', '3895', 'Y', 'b', '2073', '649', '8365', 'M', 'L', 'O', 'i', '7773', '7901', '2485', '6777', 'U', '6679', 'p', 515, 2861]