In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4521, 9297, 1549, 'j', 6533, 5069, 2291, 3507, 6815, 1619, 5771, 'k', '1705', '9637', 'd', 'g', '3717', 'Q', 'V', '8195', 'S', 'E', 'a', 'y', 'r', 'k', 'o', 'L', 3267, 'L', 2907, 'l', 4505, 'm', 3519, 'g'], ['T', 'r', '1705', '9637', 'd', 'g', '3717', 'Q', 'V', '8195', 'S', 'E', 'a', 'y', 'A', 873, 's', 1819, 4947, 'E', 'k', 'I', 'M']