In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9509, 'd', 255, 5535, 'I', 'J', 'r', 'u', 1977, 'y', 'l', 6103, 4667, 'E', '3241', 'c', 'S', 'p', 'e', '2435', 'S', 'x', '2667', 'x', '4453', 'Z', '9615', '2011', '6279', '4589', '7823', 'h', '6163', '6763', '8207', 'n', 3627, 'q', 6811, 'o', 'm', 6411, 'L', 9731, 's'], [7359, 'c', 'b', 9125, 'U', 2525, 8893, 'M', 279, 'E', '3241', 'c', 'S', 'p', 'e', '2435', 'S', 'x', '2667', 'x', '4453', 'Z', '9615', '2011', '6279', '4589', '7823', 'h', '6163', '6763', '8207', 'R', 'v', 'g', 'M', 'd', 'G', 'l', 'F', 'Q', 5721, 8983, 4943, 'W', 'X', 'y', 5263, 'w', 2001, 2715, 9605, 's', 'j']