In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 4969, 'F', 7033, 'R', 4915, 8859, '9209', 'o', 'M', '4221', 'Z', '6795', '9087', '8527', '305', 'X', 'J', 'F', 3533, 'a', 'T'], ['J', 'V', '9209', 'o', 'M', '4221', 'Z', '6795', '9087', '8527', '305', 'l', 3809]