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

[3937, 'R', 'H', '3517', '1845', 'Y', '8999', '7003', '6677', '8517', 'k', 'W', '5321', '5817', 's', '271', '4109', 'o', 5471, 's', 8751, 2307, 4959, 2645, 7227, 3355, 'Z', 'c', 'D', 1155, 'W', 'T'], ['V', 'B', 'z', 2111, 'H', '3517', '1845', 'Y', '8999', '7003', '6677', '8517', 'k', 'W', '5321', '5817', 's', '271', '4109', 'b', 8675, 9843, 'v', 'n']
H, 3517, 1845, Y, 8999, 7003, 6677, 8517, k, W, 5321, 5817, s, 271, 4109

['m', 'J', 'X', '8931', 'u', 'm'], ['V', 3299, 'X', '8931', 'Z', 6965]
X, 8931

['C', 'c', 'b', 'a', 6437, 2291, 'C', 'L', 393, 'A', 3427, 'g', 5771, 'J', 'U', 'A', 'J', 'b', '7047', 'D', 'y', '2329', '6063', '2319', 'p', 'x', 'c', 'O', '6915', 'M', 's', 'K', 't'], ['W', 'U', 2961, 'J', 'U', 'A', 'J', 'b', '7047', 'D', 'y', '2329', '6063', '2319', 'p', 'x', 'c', 'O', '6915', 'M', 's', 'V', 6663, 3623, 'Z', 2129, 771, 3213]

J, U, A, J, b, 7047, D, y, 2329, 6063, 2319, p, x, c, O, 6915, M, s