In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Y', 'l', 6297, 9773, '6077', 'B', 'x', 'C', '7371', '5635', '9551', '8421', '6587', 'Y', 'L', 'i', '1275', 'J', 's', 'C', '10005', 'x', '9473', 'I', 'T', 'O', 2961, 6077, 'L', 5737, 99, 2363, 'A', 'I', 'E', 5649, 4127, 'm', 3085], ['g', 8141, 'Y', 7433, 1501, 2423, 'P', 8359, 8589, 7265, 265, 'N', 'J', 8251, 'f', '6077', 'B', 'x', 'C', '7371', '5635', '9551', '8421', '6587', 'Y', 'L', 'i', '1275', 'J', 's', 'C', '10005', 'x', '9473', 'I', 'K', 9051, 'Q', 'M']