In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[2469, 5409, 6153, 'b', 'm', 'J', 'P', 3387, 's', '6649', '907', 'O', '9527', '8041', '1171', '8759', 'd', '1585', 'U', 'x', '5909', '993', 'H', '9089', '1367', 'n', 'X', 'b', 87, 'g', 8347], [4855, 'o', 8213, 'V', 2745, 'F', 4063, 'q', 1105, '6649', '907', 'O', '9527', '8041', '1171', '8759', 'd', '1585', 'U', 'x', '5909', '993', 'H', '9089', '1367', 'n', 'E', 'l', 'H', 'E']