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

[EX Q]: [621, 7677, 'b', '889', '6721', 'H', 'd', 'S'], [8151, 'F', 'b', '889', '6721', 'h', 4123]
[EX A]: b, 889, 6721

[EX Q]: ['R', 437, 'S', 'N', 'H', '3615', 'w', 'j', 'N', '6991', '7577', 'O', 'z', 'k', 'F', 'T', '3585', '5505', '5485', 'f', 'B', 3579, 'v', 8529, 'i'], ['w', 'j', 'X', 'G', 'I', 4567, 'H', 'w', 8869, 4535, 'L', 'q', 'u', 'V', 'L', '3615', 'w', 'j', 'N', '6991', '7577', 'O', 'z', 'k', 'F', 'T', '3585', '5505', '5485', 'f', 'R', 155]
[EX A]: 3615, w, j, N, 6991, 7577, O, z, k, F, T, 3585, 5505, 5485, f

[EX Q]: [3323, 'G', 'k', 9183, 't', 9885, 3767, 'D', 'u', 'C', 'O', '9231', 's', 'd', '3497', '6063', 'Z', 'S', '2799', 'u', '2777', '8507', 'G', 'j', 'z', 'B', 'F', 't', '5527', '8931', 'r', '10029', '7305', 'H', 't', 7899, 'F'], ['h', 'E', 4401, 'C', 1267, 1175, 2939, 'g', 'n', 'm', 'u', 'C', 'O', '9231', 's', 'd', '3497', '6063', 'Z', 'S', '2799', 'u', '2777', '8507', 'G', 'j', 'z', 'B', 'F', 't', '5527', '8931', 'r', '10029', '7305', 'H', 'q', 4957, 6929, 6135, 'M', 1875, 4101, 'L', 9477, 'Q', 'Z', 1039, 'A', 4355, 'l', 'w', 's', 4485, 'L', 6895, 753, 'm', 1205, 'V', 821, 8801]
[EX A]:
u, C, O, 9231, s, d, 3497, 6063, Z, S, 2799, u, 2777, 8507, G, j, z, B, F, t, 5527, 8931, r, 10029, 7305, H

