In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4139, 2017, 7595, 'd', 6947, 1735, 'a', 929, 4143, 'I', 't', 3367, 9133, '9989', '6111', '167', '3593', '5189', '1607', 'Q', 'E', 'O', 't', 'h', 'c', 'k', '3223', '5269', '6289', '5231', '7535', '4851', 'c', 'C', '3179', 'L', 'U', 'M', 'X', 'd', 767, 'g', 4567, 'i', 'j', 2029, 247, 9485], ['l', 9373, 2169, 2645, 9097, 57, 'u', 8705, 'd', 9949, 2087, 4779, 'b', 's', 'B', 6053, 'D', '9989', '6111', '167', '3593', '5189', '1607', 'Q', 'E', 'O', 't', 'h', 'c', 'k', '3223', '5269', '6289', '5231', '7535', '4851', 'c', 'C', '3179', 'R', 'a', 'E', 7153, 'i', 2035, 453, 'F', 'P', 'S', 'l']