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

Ex Input:
['Q', 'N', 'm', 'L', 2015, 'W', 'D', 'd', 'c', 'Q', 'I', 'N', 'W', 'j', 'A', 6921, 'X', 'H', 'N', 'l', 'U', 'p', '4397', 'X', '1559', '167', 'i', '8689', '9273', 'J', 'r', 'a', 'K', '5511', 'R', 'z', 'T', 'f', 'V', 'E', 'V', 6753, 'z', 2281, 'Y', 7397, 115, 3973, 8083, 6475, 'L', 'z', 5969, 3581, 'm', 3171, 3211], ['R', 5629, 'k', 3959, 'R', 'O', 'U', 'V', 'N', 'o', 3345, 'P', 4317, 'M', 'g', 8331, 'v', 'T', 'R', 'Y', 'X', 'H', 'N', 'l', 'U', 'p', '4397', 'X', '1559', '167', 'i', '8689', '9273', 'J', 'r', 'a', 'K', '5511', 'R', 'z', 'T', 'f', 'r', 'u', 9505, 3363, 4823, 'w', 'i', 'B', 'Q', 'Y', 'H', 'R', 2991, 's', 'U', 5579, 'C', 'F', 'E', 'j', 'P']

Ex Output:
X, H, N, l, U, p, 4397, X, 1559, 167, i, 8689, 9273, J, r, a, K, 5511, R, z, T, f


Ex Input:
['C', 'b', 'L', 9325, 'M', 'p', 7813, 'J', '1879', 'l', '6011', '8425', '5761', '8567', '529', '3079', '2611', '9387', '909', '751', 'Q', 4393, 'x', 5071, 6297], [347, 'W', 8317, 'm', 655, 2215, 9489, 9125, 7317, 'J', '1879', 'l', '6011', '8425', '5761', '8567', '529', '3079', '2611', '9387', '909', '751', 'L', 6565, 5537, 'C', 'S', 543, 5541, 'Z', 'q', 'W', 8259, 9311]

Ex Output:
J, 1879, l, 6011, 8425, 5761, 8567, 529, 3079, 2611, 9387, 909, 751


Ex Input:
['y', 'x', 9651, 641, 7151, 'M', 717, '7315', '7377', 'R', 'Q', '7113', '6517', 'q', 'v', 'n', 2711, 'Y', 'G', 2405, 'W', 'U', 119], ['F', 'V', 'R', 5549, 'C', 4961, '7315', '7377', 'R', 'Q', '7113', '6517', 'q', 'v', 'H', 'z', 6487, 2875, 'p', 4831, 'D', 2001]

Ex Output:

7315, 7377, R, Q, 7113, 6517, q, v