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

Ex Input:
['m', 'F', 5425, 1403, 6355, 7383, 'Y', 'e', 'K', '10031', 'S', '9599', 'V', 'i', '6919', 'r', 'm', 'I', 'x', '6889', 'M', '1977', 'S', 'c', 'm', '4569', 'F', 'C', 'u', 'N', 2741, 7825, 6521, 'R'], [8389, 7261, 4783, 6181, 6767, 9719, 2625, 'W', 4357, 1749, 887, 153, 8939, 'K', 1329, 'T', 'a', 'k', 'F', 't', 'K', '10031', 'S', '9599', 'V', 'i', '6919', 'r', 'm', 'I', 'x', '6889', 'M', '1977', 'S', 'c', 'm', '4569', 'F', 'C', 'u', 'K', 'E', 'P', 8489, 2309, 'j', 3937, 4731, 'H']

Ex Output:
K, 10031, S, 9599, V, i, 6919, r, m, I, x, 6889, M, 1977, S, c, m, 4569, F, C, u


Ex Input:
['x', 495, 'L', 'O', 2935, 'y', 163, 3507, 6515, '5249', '9751', '8269', '923', '10005', '9739', 'u', 'X', 'y', '4535', 'I', 'V', 'f', '8511', '8955', 's', '2255', '1', '7831', 't', 'w', 1985, 'F', 'V', 5375, 6359, 7963, 4103, 2625, 'p', 'N', 7945, 'L', 6909], [251, 'J', 'k', 4075, 'd', 'x', 'j', 'K', 'u', 605, 1667, 8527, 6845, 2537, 'O', 9259, 'o', 'B', '5249', '9751', '8269', '923', '10005', '9739', 'u', 'X', 'y', '4535', 'I', 'V', 'f', '8511', '8955', 's', '2255', '1', '7831', 't', 'j', 'S', 'H', 1289]

Ex Output:
5249, 9751, 8269, 923, 10005, 9739, u, X, y, 4535, I, V, f, 8511, 8955, s, 2255, 1, 7831, t


Ex Input:
[7571, 'u', '8575', '7973', 'X', '5969', 'J', 'P', 'h'], [9231, 719, '8575', '7973', 'X', '5969', 'C', 'r', 'Y']

Ex Output:

8575, 7973, X, 5969