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

Ex Input:
['A', 'f', 's', 619, 'P', '6773', '2907', 'j', 'Y', '3815', '5619', '3681', '1259', 'k', 'k', 'p', '7817', 'e', '1227', 'T', '7201', 'o', 'o', 'W', 'U', 'E', '4881', 'h', '9013', '8427', 'W', 'B', '5309', 'V', 'L'], [7877, 9179, 'B', 'F', 'e', 4663, 'd', 7957, 'F', 'F', 'k', 'f', 8559, 'U', '6773', '2907', 'j', 'Y', '3815', '5619', '3681', '1259', 'k', 'k', 'p', '7817', 'e', '1227', 'T', '7201', 'o', 'o', 'W', 'U', 'E', '4881', 'h', '9013', '8427', 'W', 'B', '5309', 'J', 'R', 't', 'J', 'D', 'U', 'x', 'G', 'y', 'L', 7841, 'g', 's', 8385, 1631, 'Z', 6679, 4419, 'Y', 9253, 3709, 'E', 'a']

Ex Output:
6773, 2907, j, Y, 3815, 5619, 3681, 1259, k, k, p, 7817, e, 1227, T, 7201, o, o, W, U, E, 4881, h, 9013, 8427, W, B, 5309


Ex Input:
[7319, 'V', 'f', 't', 'M', 'L'], [4655, 3353, 'f', 't', 'G', 1263]

Ex Output:
f, t


Ex Input:
['N', 'b', 'G', 2585, 3393, 'U', 'M', '7255', 'J', '3875', '2953', '6945', '5285', '9777', 'n', '2351', 'r', 'P', 'm', 'L', 'F', 5435, 8095, 2339, 5491, 3359, 1533, 4957], ['J', 8195, 'W', 'I', 'T', 'i', 'b', 337, 6941, 'i', 1073, 'b', 8835, 'D', 'M', '7255', 'J', '3875', '2953', '6945', '5285', '9777', 'n', '2351', 'r', 'P', 'm', 'L', 'h', 'H', 'b', 'G', 'a', 'x']

Ex Output:

M, 7255, J, 3875, 2953, 6945, 5285, 9777, n, 2351, r, P, m, L