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

Ex Input:
[5173, 6195, 's', '1739', 'z', '6701', '4055', '10017', '9615', '8077', 'I', '2899', 'm', 'H', '8731', '4099', '333', '4715', 'K', '1037', 'k', 'L', 'M', 1893, 'X', 'e'], ['k', 8023, 'R', 'D', 7703, 'l', 7021, 195, 307, 'H', 365, 8069, 559, 8195, 'g', 's', '1739', 'z', '6701', '4055', '10017', '9615', '8077', 'I', '2899', 'm', 'H', '8731', '4099', '333', '4715', 'K', '1037', 'k', 'l', 'o', 4179, 'O', 'Z', 'g', 1391, 's', 10005, 2651, 'D', 9085, 'y', 'L', 'L']

Ex Output:
s, 1739, z, 6701, 4055, 10017, 9615, 8077, I, 2899, m, H, 8731, 4099, 333, 4715, K, 1037, k


Ex Input:
['d', 897, 't', 1807, 'k', 'P', '5013', '1811', '9411', 'U', 'z', '2793', '3221', '5643', 'j', '1793', '9507', 'J', '6147', 'i', '4383', '723', 'z', 'c'], [2741, 'D', 5443, 'Z', 'k', 129, 3339, 'k', 'T', 'P', '5013', '1811', '9411', 'U', 'z', '2793', '3221', '5643', 'j', '1793', '9507', 'J', '6147', 'i', '4383', '723', 'd', 4353]

Ex Output:
P, 5013, 1811, 9411, U, z, 2793, 3221, 5643, j, 1793, 9507, J, 6147, i, 4383, 723


Ex Input:
['A', 1529, 3467, 1613, 7293, 1083, 'I', '4989', 'N', 'm', '8799', '1313', '5539', '2169', 'b', 1807, 9595, 'r', 'm'], [509, 583, 'u', 1861, 'I', '4989', 'N', 'm', '8799', '1313', '5539', '2169', 'h', 'L', 7873, 'G']

Ex Output:

I, 4989, N, m, 8799, 1313, 5539, 2169