In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'A', 7687, 281, 'v', 'P', 'i', 7785, 'J', 'Y', 3523, '355', '7389', 'Q', '4119', 'I', 'r', '6615', '8467', 'C', '9539', '4047', 'F', 'B', '2161', 'm', 'W', 'C', 'O', '7731', '3331', 'i', 267, 'p', 4649, 'n', 'H', 'y', 2593, 4947, 3199, 7407, 8623, 'S'], ['T', 9895, 1551, 'O', 5617, 'p', '355', '7389', 'Q', '4119', 'I', 'r', '6615', '8467', 'C', '9539', '4047', 'F', 'B', '2161', 'm', 'W', 'C', 'O', '7731', '3331', 'S', 'C', 2099, 6507, 489, 9845, 6641, 2521]