In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['z', 3279, 'g', 4807, 'M', 'y', 5945, 'O', 'p', '623', '9311', 't', '2081', 'Q', '1117', '8885', 'B', 'z', 667, 6433, 'y', 'r', 6885, 'L', 'C'], [1797, 'r', 5625, 9653, 7131, 'T', 9475, 'p', '623', '9311', 't', '2081', 'Q', '1117', '8885', 'B', 'B', 'C', 'j', 'p', 'j']