In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Q', 'L', 3901, 3741, 'B', 8419, 2273, 'j', 'o', 'y', '4369', 'T', 'H', '8765', 'R', '9567', '6699', '1521', '7349', 'h', '1571', 'j', 'z', 6147, 'h'], [2115, 7503, 'y', '4369', 'T', 'H', '8765', 'R', '9567', '6699', '1521', '7349', 'h', '1571', 'j', 'j', 7717, 'F', 'v', 8675, 'k', 'R', 3975, 5579]