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]: [7257, 'p', 'o', 7595, 'w', 'S', 'U', '3739', 'Z', 'n', 'm', 'M', '6421', '3519', 'B', '2639', 'a', '8269', 'j', '2425', 'E', 'E', 'V', 'H', 'D', 'd', 'M', 'o', '3915', 'v', 'P', 'l', 'i', 'q', 6171, 397, 1631], [4641, 1471, 5915, 1657, 4847, 'v', 3719, 'U', 9943, 'v', 2189, 9163, 'Y', 'C', 'e', 3867, 3395, 'm', 5999, 9653, 'K', 'H', 2767, 1999, 'w', 'S', 'U', '3739', 'Z', 'n', 'm', 'M', '6421', '3519', 'B', '2639', 'a', '8269', 'j', '2425', 'E', 'E', 'V', 'H', 'D', 'd', 'M', 'o', '3915', 'g', 5715, 'm', 'K', 'g', 'Q', 5439, 7327, 'V', 1335, 885, 9993, 'n', 2303, 1305, 9329, 'i', 5357, 't', 7567, 2211, 787, 7459]
[EX A]: w, S, U, 3739, Z, n, m, M, 6421, 3519, B, 2639, a, 8269, j, 2425, E, E, V, H, D, d, M, o, 3915

[EX Q]: ['v', 6021, 'g', 'f', 'w', 5031, 'f', 'H', 3, 4999, 'B', 'n', 5615, 5157, 'D', 5243, 3819, '9475', '1229', '2415', 'i', '2949', '10003', 'L', '505', 'f', '2605', 'x', 'w', 'i', '5327', '7079', '6985', '6817', 'r', '2613', 'X', 2979, 'A', 953, 'a'], [9271, 3871, 3611, 3001, 1653, 'G', 'u', 9563, 1931, 'u', 3241, 5723, 'E', 'm', '9475', '1229', '2415', 'i', '2949', '10003', 'L', '505', 'f', '2605', 'x', 'w', 'i', '5327', '7079', '6985', '6817', 'r', '2613', 'E', 'f', 'j', 'l']
[EX A]:
9475, 1229, 2415, i, 2949, 10003, L, 505, f, 2605, x, w, i, 5327, 7079, 6985, 6817, r, 2613