In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 3489, 'R', '6131', 'K', 'g', '9817', '353', 'r', '9713', 'T', 'H', '6285', 'i', '9971', 'y', 'A', 'L', 4199, 1955, 5351, 'X', 'g', 'd', 'w', 7501, 2555], [2275, 'T', 'K', 'B', 'f', 9421, 9603, 5483, 'V', 'R', '6131', 'K', 'g', '9817', '353', 'r', '9713', 'T', 'H', '6285', 'i', '9971', 'n', 7867, 'r', 'k', 'D', 'U', 1789, 1677, 8471, 9883, 5591, 'H', 8053]