In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['r', 2687, 'A', 5395, 'U', 'L', 4987, 8559, 7979, 'r', 'R', 6617, 'j', 7731, 7965, 8297, 3189, 4991, 'b', 8829, 6675, 7935, 7129, 10003, 3635, 'o', 'e', '159', 'b', 'Y', '5083', 'H', '6849', '4061', '823', '3367', 'H', '4809', '6377', 'd', 'y', 'D', 'Y', 'Y', '3067', 'N', 'b', '7591', '9971', 'y', 'o', '8627', '4771', '2793', 'Q', 'N', 'R', 'Y', 5107, 1757, 'X', 'k', 'n', 455, 6251, 4091, 'F', 'o', 4751, 'g', 'n', 'y', 8653, 6791, 4223, 'S', 3183, 8655, 9763], ['a', 2855, 1983, 8691, 5399, 1479, 2067, 'c', 'n', 'o', 8351, 5543, 1295, 'f', 'V', 'o', 'e', '159', 'b', 'Y', '5083', 'H', '6849', '4061', '823', '3367', 'H', '4809', '6377', 'd', 'y', 'D', 'Y', 'Y', '3067', 'N', 'b', '7591', '9971', 'y', 'o', '8627', '4771', '2793', 'Q', 'l', 9955]