In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['H', 'b', 4491, '2907', 'O', 'O', '5191', 'd', '7655', '1431', 'X', 'F', 'N', '4303', 'j', '1901', 'E', 'm', 'C', 'm', 'b', '10017', '8179', '6441', '3193', '7939', '9205', '4315', '8827', '1935', 'V', 'O', 'c', 815, 1569, 'f', 867, 'W'], [3801, 'Y', 'y', 'c', 3801, '2907', 'O', 'O', '5191', 'd', '7655', '1431', 'X', 'F', 'N', '4303', 'j', '1901', 'E', 'm', 'C', 'm', 'b', '10017', '8179', '6441', '3193', '7939', '9205', '4315', '8827', '1935', 'D', 947, 'Q', 3205, 'e', 'z', 'm', 9423, 1775]