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

Ex Input:
[6529, 'i', 8343, 't', 'h', 5181, 'k', '5863', 'm', 'P', '9787', 'r', '1383', 'U', 'a', 'p', 'T', '1635', 'J', 'X', 'O', 'E', 'W', 625, 'O', 'm'], [4169, 8965, 6125, 'U', 'x', 'E', 7203, 'I', 81, 'P', 'r', 8581, 'k', '5863', 'm', 'P', '9787', 'r', '1383', 'U', 'a', 'p', 'T', '1635', 'J', 'X', 'O', 'v', 'f', 'q', 'b', 'm', 'f', 9239, 'b', 895, 703, 7809, 'E', 'l', 'c', 7915]

Ex Output:
k, 5863, m, P, 9787, r, 1383, U, a, p, T, 1635, J, X, O


Ex Input:
[9273, 'C', 'u', 6963, 'W', 7827, 3953, 'p', 6281, 7421, 'j', 'Y', 'P', 253, 5393, 'k', 9437, 'f', 6067, 'l', 6167, 'j', 'o', 'y', 'R', '5165', 'K', '6947', '2583', '3721', 'u', 'b', 'e', 'G', 'B', '3777', '623', '8995', '7339', 'b', '8633', '6783', 'l', 'q', '9637', '2791', '6545', 'W', 'G', 'a', 'v', 'h', 3895, 'C', 719, 1945, 'S'], ['G', 4797, 'z', 9055, 'c', 't', 7175, 1231, 'I', 'X', 1415, 'n', 7801, 'K', 7581, 'X', 3735, 'a', 'R', '5165', 'K', '6947', '2583', '3721', 'u', 'b', 'e', 'G', 'B', '3777', '623', '8995', '7339', 'b', '8633', '6783', 'l', 'q', '9637', '2791', '6545', 'W', 'G', 'a', 'C', 'E', 'p', 'e', 'O', 'O', 9127, 'c', 6151, 5929, 'v', 'Z', 6375, 'F', 6255, 6803, 'Y', 'Z', 6865, 5889, 1719, 305, 5127, 'g', 'x', 8743]

Ex Output:
R, 5165, K, 6947, 2583, 3721, u, b, e, G, B, 3777, 623, 8995, 7339, b, 8633, 6783, l, q, 9637, 2791, 6545, W, G, a


Ex Input:
[4779, 'v', 8093, 1429, 3779, 'R', 1615, 'R', 'E', 8083, 5165, 'P', 979, 2315, 'r', 'h', 't', '5997', 'f', 'd', 'y', 'd', '2017', 'C', 'j', 'R', 'O', '1227', 'D', 'F', '6243', 'y', 'w', '6501', 'z', 'N', 'w', 'h', 4701, 5929, 7935, 3617, 6793, 'q', 4205, 1837, 'u', 2101], ['l', 3497, 1255, 957, 5685, 'i', 'B', 'r', 'h', 't', '5997', 'f', 'd', 'y', 'd', '2017', 'C', 'j', 'R', 'O', '1227', 'D', 'F', '6243', 'y', 'w', '6501', 'z', 'N', 'w', 'o', 6879, 'V', 2553, 6713, 1509, 3513, 7215, 's', 17]

Ex Output:

r, h, t, 5997, f, d, y, d, 2017, C, j, R, O, 1227, D, F, 6243, y, w, 6501, z, N, w