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

Ex Input:
[9945, 7993, 'D', 'C', 1341, 'S', 3245, 'v', 'R', 'a', 'Y', 'm', 'j', 'S', 2325, 7293, 8483, '2185', 'X', '5509', 'v', 'Q', '1557', '2811', '3957', '431', '2403', '9633', 'H', 'd', 'h', 'u', 'P', '3647', 't', '8345', '8157', 'a', '4759', '3097', 'o', 5889, 'c', 2547, 'q', 9407, 'M', 'O'], [2017, 'P', 9637, 7239, '2185', 'X', '5509', 'v', 'Q', '1557', '2811', '3957', '431', '2403', '9633', 'H', 'd', 'h', 'u', 'P', '3647', 't', '8345', '8157', 'a', '4759', '3097', 'Y', 'O', 'U', 495, 'U', 3945, 'h', 9439, 6821, 7583, 6249, 573, 'v', 'T', 2219, 3279]

Ex Output:
2185, X, 5509, v, Q, 1557, 2811, 3957, 431, 2403, 9633, H, d, h, u, P, 3647, t, 8345, 8157, a, 4759, 3097


Ex Input:
['o', 'f', '955', 'y', 'O', 2181], ['M', 'l', '955', 'y', 'h', 5209]

Ex Output:
955, y


Ex Input:
[8519, 'p', 'z', 'T', 3671, 'j', 'L', 'X', '8625', 'V', '9231', 'h', 'g', 'W', '4333', '5555', 'u', '2277', '3889', '275', '463', 'z', 'i', 'n', 's', 'G', '1615', '1913', 'p', '6515', 'X', 'X', 4481, 'M', 8361, 'Q', 'L', 'M', 'E', 3765, 5857, 3515], [2101, 7133, 4281, 7587, 7031, 6805, 8627, 1123, 'G', 'F', 's', 'Z', 'Z', 'a', 'z', 'A', 'R', 'D', 'K', 3305, 'C', 1673, 'u', 'o', 'j', 'L', 'X', '8625', 'V', '9231', 'h', 'g', 'W', '4333', '5555', 'u', '2277', '3889', '275', '463', 'z', 'i', 'n', 's', 'G', '1615', '1913', 'p', '6515', 'X', 'a', 'P', 'V', 2875, 's', 8875]

Ex Output:

j, L, X, 8625, V, 9231, h, g, W, 4333, 5555, u, 2277, 3889, 275, 463, z, i, n, s, G, 1615, 1913, p, 6515, X