In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7673, 8271, 'p', 'c', 'G', 1057, 2019, 2191, 791, 'd', 't', 1691, 6149, 'D', 3505, 5713, 'p', 6365, 6993, 81, 8253, 'X', 'Q', 6205, 1383, 'f', '7543', '7469', 'p', '6533', 'e', '867', 'd', 'r', '5029', 'a', 'L', 'e', '8097', 'J', '1833', '4029', 'o', 'K', 'a', '9053', '2837', 'Q', '9395', 'Y', 'P', 3005, 9063, 1569, 5517, 's', 8389, 'I', 'y', 'Y', 5997, 'c', 5823, 4903, 8973, 4185, 'M'], [8239, 3777, 'F', 'e', 'f', 9937, 'm', 875, 6913, 'k', 1931, 8209, 3989, 3291, 'r', 'G', 7385, 1433, 'f', '7543', '7469', 'p', '6533', 'e', '867', 'd', 'r', '5029', 'a', 'L', 'e', '8097', 'J', '1833', '4029', 'o', 'K', 'a', '9053', '2837', 'Q', '9395', 'Y', 'p', 'j', 'D', 9805, 'j', 4067, 573, 455, 'P', 'A', 'H', 'V', 'd', 'Y', 3829, 'k', 'f', 7617]