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

[6839, 'h', 6347, 'c', 'u', 793, 601, 't', 'w', 3237, 'U', '5583', 'z', 'X', 'L', '4399', 'Q', 'H', 'h', 'Q', 'D', '8725', 'u', 'a', '8719', 'f', 'E', '8309', '2711', 'E', '9927', '3625', 'G', 'E', '7087', 'T', '2201', 'm', 's', '3821', 'b', 'v', 9597, 'X', 2647, 'C', 155, 'B', 5459, 3691, 9935, 9189], ['k', 6433, 5973, 9407, 9023, 2147, 2247, 'k', 6665, 9491, 'K', 2537, 'r', 2469, 'd', 2941, 'H', 8667, 855, 'V', 'U', '5583', 'z', 'X', 'L', '4399', 'Q', 'H', 'h', 'Q', 'D', '8725', 'u', 'a', '8719', 'f', 'E', '8309', '2711', 'E', '9927', '3625', 'G', 'E', '7087', 'T', '2201', 'm', 's', '3821', 'w', 'B', 6551, 'i', 'v', 773, 'M', 'I', 'R']
U, 5583, z, X, L, 4399, Q, H, h, Q, D, 8725, u, a, 8719, f, E, 8309, 2711, E, 9927, 3625, G, E, 7087, T, 2201, m, s, 3821

[2481, 7755, 2663, 2449, 4291, 'b', 5343, 'F', 'A', '3811', 'G', 'I', '415', '6825', '2449', 'q', 'W', 'x', 't', 'K', 'l', 539, 3959], ['W', 'N', 'K', 4351, '3811', 'G', 'I', '415', '6825', '2449', 'q', 'W', 'x', 'c', 9833]
3811, G, I, 415, 6825, 2449, q, W, x

[1055, 'L', 'W', 'z', 'O', 4321, 'H', 'U', '1713', 'z', 'I', 'Q', '9037', 't', 9601, 2421, 'E'], [3359, 'Y', 'H', 'U', '1713', 'z', 'I', 'Q', '9037', 'b', 6005, 6459]

H, U, 1713, z, I, Q, 9037