In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['G', 'M', 'b', 'Q', 'I', 't', 'H', 8341, 7415, 2793, 6907, 6321, 'i', 1871, 'j', 'j', 'e', '1989', '8417', '9503', '7475', '8807', 'k', 'R', 'y', 'j', '3893', '2187', 't', '9937', '4509', '4369', '1379', 'V', '4109', 'V', 'L', 5901, 9629, 8059, 'f', 'G', 'p', 9457, 7637], ['D', 4347, 'p', 'm', 7127, 8789, 6853, 'O', 'F', 'Y', 1915, 'B', 8847, 's', 'c', 9277, 'd', 1319, 2983, 'j', 'e', '1989', '8417', '9503', '7475', '8807', 'k', 'R', 'y', 'j', '3893', '2187', 't', '9937', '4509', '4369', '1379', 'V', '4109', 'G', 2659, 559, 'e', 'U']