In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[689, 547, 'R', 9853, 7381, 697, 7681, 'n', '9435', '3719', '5917', 'b', 'V', '8737', '8197', '5337', '6037', 'O', '4067', '1761', '4497', '4155', '1807', '5983', '3965', '2759', 'I', '9469', '7723', 't', '4055', '2033', 'z', 3911, 1357, 3401, 'g', 689, 9595, 'k', 'q', 945, 2993, 'E'], [5231, 'T', 225, 8777, 'm', 'N', 7889, 'j', 6561, 'y', '9435', '3719', '5917', 'b', 'V', '8737', '8197', '5337', '6037', 'O', '4067', '1761', '4497', '4155', '1807', '5983', '3965', '2759', 'I', '9469', '7723', 't', '4055', '2033', 'i', 'b', 'Q', 8805, 1215, 5853, 'A', 4737, 'V', 'b', 4273, 'q', 9233, 3783, 'B', 'f', 'l', 'q', 'F', 5021]