In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['l', 4049, 'A', 3447, 1073, 4683, '1449', '2807', '2167', '4481', 'N', 'o', 'N', 'y', 'X', 'N', '2535', 'V', '457', '8815', '5791', '5627', '577', '2869', 'y', '7615', 'M', '7429', 'D', 'j', '3857', 'a', '5309', '5723', 'j', 'N', 'B', 3577, 'S', 8509, 'w', 'L', 'l', 5311, 8221, 'N', 'q', 'L', 2443, 'n', 'v', 7505, 'p', 'A', 'X', 4425, 5379, 5583, 'A', 'I', 'o', 'Y', 'M'], [9973, 'g', 'N', 'K', 2533, 379, 6807, 'W', 2303, '1449', '2807', '2167', '4481', 'N', 'o', 'N', 'y', 'X', 'N', '2535', 'V', '457', '8815', '5791', '5627', '577', '2869', 'y', '7615', 'M', '7429', 'D', 'j', '3857', 'a', '5309', '5723', 'j', 'N', 'D', 'u', 6725, 'H', 9625, 'o', 'E', 'Y', 'm', 1493, 'z', 8107, 7607, 'z', 'f', 'Z', 6701, 2255, 'D', 3795, 's']