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

Ex Input:
[3921, 181, 9775, 3681, 'n', 9145, 1931, 'j', 'G', 't', 7479, 487, 1837, 'C', 'u', 'G', 'V', '1647', 'T', 'O', 'Z', '431', 'H', 'o', '4139', 'J', 'L', '1139', 'X', 'K', '8985', '8247', '4001', 'o', 'A', 't', '7059', 'k', '5429', '8203', 'c', 'z', 'H', '1337', 'j', 3499, 'o', 3365, 3733, 3145, 'G', 545, 'B', 'I', 'N', 'Q', 1, 'k'], ['Y', 'R', 8925, 'A', 3997, 'E', 'b', 'G', 'x', 'G', 'V', '1647', 'T', 'O', 'Z', '431', 'H', 'o', '4139', 'J', 'L', '1139', 'X', 'K', '8985', '8247', '4001', 'o', 'A', 't', '7059', 'k', '5429', '8203', 'c', 'z', 'H', '1337', 'Y', 2903, 'c', 'S', 't', 7941, 4543, 4401, 'l', 'H', 685, 6115, 'L', 6117]

Ex Output:
G, V, 1647, T, O, Z, 431, H, o, 4139, J, L, 1139, X, K, 8985, 8247, 4001, o, A, t, 7059, k, 5429, 8203, c, z, H, 1337


Ex Input:
['W', 'Y', 'y', 'A', 'm', '6915', '3285', 'd', '1035', 'H', 'J', '7549', 'P', '5301', 'q', '4057', 'H', '5697', 'H', '5141', 'H', 2451, 'x', 3307, 'A', 7121, 'b', 3319], ['M', 'L', 5827, 'I', 'r', 'f', '6915', '3285', 'd', '1035', 'H', 'J', '7549', 'P', '5301', 'q', '4057', 'H', '5697', 'H', '5141', 'N', 3371, 691]

Ex Output:
6915, 3285, d, 1035, H, J, 7549, P, 5301, q, 4057, H, 5697, H, 5141


Ex Input:
[8275, 8051, '8885', 'F', 'U', 'k'], [8639, 'V', '8885', 'F', 'e', 'c']

Ex Output:

8885, F