In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

Ex Input:
['w', 5919, 'P', 6117, 7697, 'Y', 4467, '3097', '2793', 'x', 'P', 'c', 'o', '8777', 'D', '1983', '2397', 'X', 't', 'k', '8109', '2549', 'b', '7173', '3843', 'k', 'u', 'P', 1347, 'y', 'r', 'o', 5611, 'L', 999, 4781], [9955, 'n', 8107, 7059, 'V', 'E', 2417, 1811, 3625, 623, 'T', 'R', 'p', 'l', 'W', 8103, 3691, 'N', '3097', '2793', 'x', 'P', 'c', 'o', '8777', 'D', '1983', '2397', 'X', 't', 'k', '8109', '2549', 'b', '7173', '3843', 'k', 'k', 'p', 'L', 1311, 591, 'J', 5611, 'Q', 'p', 'I', 5921, 237, 'y', 1981, 3861, 'B', 'n', 'r', 'H']

Ex Output:
3097, 2793, x, P, c, o, 8777, D, 1983, 2397, X, t, k, 8109, 2549, b, 7173, 3843, k


Ex Input:
['d', 897, 't', 1807, 'k', 'P', '5013', '1811', '9411', 'U', 'z', '2793', '3221', '5643', 'j', '1793', '9507', 'J', '6147', 'i', '4383', '723', 'z', 'c'], [2741, 'D', 5443, 'Z', 'k', 129, 3339, 'k', 'T', 'P', '5013', '1811', '9411', 'U', 'z', '2793', '3221', '5643', 'j', '1793', '9507', 'J', '6147', 'i', '4383', '723', 'd', 4353]

Ex Output:
P, 5013, 1811, 9411, U, z, 2793, 3221, 5643, j, 1793, 9507, J, 6147, i, 4383, 723


Ex Input:
['U', 4681, 'N', 151, '3141', '8631', '3481', 'v', 'o', 'e', 1169, 7545, 'T', 7529], ['e', 1817, '3141', '8631', '3481', 'v', 'o', 'b', 3321]

Ex Output:

3141, 8631, 3481, v, o