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

Ex Input:
[2945, 6951, 2771, 'k', 'G', '7377', 'd', 'a', 'p', 'J', 'c', 'R', '6641', 'a', '2235', '3033', '3189', '7299', 'h', 'T', '5111', 'k', 'd', 4197, 'j', 'p', 'z', 1911, 'w', 6663, 7993, 5973, 3193, 7387, 'h', 'e', 8663, 2715], ['U', 'a', 'f', 7179, 7859, 'C', 6081, 2069, 3459, 'm', 'w', 'k', 'q', 'k', 'G', '7377', 'd', 'a', 'p', 'J', 'c', 'R', '6641', 'a', '2235', '3033', '3189', '7299', 'h', 'T', '5111', 'k', 'e', 'v', 'f', 5943, 8771, 'K', 'i', 'c', 'x', 7745, 'F', 'x', 3855, 'S', 5113, 1205]

Ex Output:
k, G, 7377, d, a, p, J, c, R, 6641, a, 2235, 3033, 3189, 7299, h, T, 5111, k


Ex Input:
[9575, 'B', 2013, 'J', 'e', 7839, 1517, 1505, 'T', 1109, 5639, 'o', '4409', 'L', '9207', '2481', 'W', '5287', 'h', 'b', 'h', 'T', 'g', 'k', '5867', 'p', '3705', '1257', '4107', '3389', 'a', 'r', 'j', 3455, 4281, 7515, 2685, 617, 'M', 'f', 1943, 2675, 'L', 'U'], [1429, 2865, 'Y', 745, '4409', 'L', '9207', '2481', 'W', '5287', 'h', 'b', 'h', 'T', 'g', 'k', '5867', 'p', '3705', '1257', '4107', '3389', 'a', 'r', 'F', 'r', 'w', 3275, 'x', 'y', 'R', 'N', 'P', 4961, 'm', 'v', 'L', 'g', 'B']

Ex Output:
4409, L, 9207, 2481, W, 5287, h, b, h, T, g, k, 5867, p, 3705, 1257, 4107, 3389, a, r


Ex Input:
[5555, 'e', 'k', '4653', 'S', 'q', 'o', 'z'], [8655, 3981, 'k', '4653', 'S', 'q', 'k', 8991, 8619, 's']

Ex Output:

k, 4653, S, q