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

Ex Input:
[571, 969, 3069, 7455, 'g', 'Z', 237, 8231, 71, 'X', '873', 'N', 'u', 'c', 'n', '759', 'p', 'I', '1007', 'O', 'V', '9137', 'G', '1727', '7437', 't', '8909', 'L', 'C', 'R', 3217, 1445, 3493, 'Y', 'G', 6747, 751, 1347, 7337, 'Z'], ['z', 'U', 477, 'm', 'y', 7909, 413, 6315, 'v', 7173, 1403, 'F', 'M', 7559, 7589, 9021, 'U', 2859, '873', 'N', 'u', 'c', 'n', '759', 'p', 'I', '1007', 'O', 'V', '9137', 'G', '1727', '7437', 't', '8909', 'L', 'k', 3817, 'Q', 1165]

Ex Output:
873, N, u, c, n, 759, p, I, 1007, O, V, 9137, G, 1727, 7437, t, 8909, L


Ex Input:
[6475, 9471, 3883, 'k', 3715, 'h', '4275', '3019', '9711', 'd', '7655', 'j', 'Y', 'H', 'f', '3135', '9479', 'K', 'E', 'J', '9713', '6953', 's', 'g', 'G', 9013, 1643, 619, 'b', 'k', 'z', 'd', 'w', 'E', 7989, 'o', 'C', 'Y'], [3391, 's', 5761, 9389, 6131, 'a', 1723, 451, 4781, 'S', 8389, 'l', 'P', 'h', '4275', '3019', '9711', 'd', '7655', 'j', 'Y', 'H', 'f', '3135', '9479', 'K', 'E', 'J', '9713', '6953', 'D', 7661, 885, 'J', 7381, 2713, 1355, 451, 'N', 'P', 'T', 5127, 8301, 1891, 9947, 'x', 7295]

Ex Output:
h, 4275, 3019, 9711, d, 7655, j, Y, H, f, 3135, 9479, K, E, J, 9713, 6953


Ex Input:
[3957, 205, 'U', 'P', 3513, 7985, 'n', 'L', 'G', 'h', '7083', '9427', 'A', 'W', 'Q', '1419', 'V', '3251', 'f', '3763', '1571', '6261', 'v', 'U', 'G', '3687', '3101', 'b', '7555', 'Q', 'q', 579, 2041, 'i', 6279, 7027, 'd', 6323, 'F', 8273, 'f'], [5117, 4221, 'Y', 'l', 'B', 'q', 'g', 'W', 2915, 'a', 'N', 'Z', 'v', 'h', '7083', '9427', 'A', 'W', 'Q', '1419', 'V', '3251', 'f', '3763', '1571', '6261', 'v', 'U', 'G', '3687', '3101', 'b', '7555', 'Q', 'D', 'T', 1057, 'Q', 6761, 'p', 9909, 5243]

Ex Output:

h, 7083, 9427, A, W, Q, 1419, V, 3251, f, 3763, 1571, 6261, v, U, G, 3687, 3101, b, 7555, Q