instruction:
In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
question:
[2255, 4205, 'U', '7567', 'k', 5167], ['Q', 9439, 'U', '7567', 'H', 1307]
answer:
U, 7567


question:
[3409, 'W', 7371, 705, 4353, 6055, 1109, '2039', '1331', 'M', '1507', '1583', '9005', '3561', 'm', '3453', '9927', 'L', '5625', '3923', '5839', 'b', 'a', '1865', 'l', 'Z', '4855', '2985', 'l', '7011', 'Z', 'f', '6205', 'd', 'r', 5975, 7455, 'P', 7563, 'A', 797, 'm', 'y', 'S'], [851, 'D', 'Z', 't', 'd', 189, 'V', 'o', 8559, 3455, '2039', '1331', 'M', '1507', '1583', '9005', '3561', 'm', '3453', '9927', 'L', '5625', '3923', '5839', 'b', 'a', '1865', 'l', 'Z', '4855', '2985', 'l', '7011', 'Z', 'f', '6205', 'x', 'q', 7907, 857, 2245, 5847, 'h']
answer:
2039, 1331, M, 1507, 1583, 9005, 3561, m, 3453, 9927, L, 5625, 3923, 5839, b, a, 1865, l, Z, 4855, 2985, l, 7011, Z, f, 6205


question:
[4709, 3917, 4043, 'm', 6747, 9707, 'S', 'd', 'g', '7197', 't', '1109', 'G', '3387', 'O', 'k', 'M', 'a', 'v', '5417', 'T', '2147', 'D', 'U', '6633', '1001', '4199', 'O', '2695', '9745', '1885', 'R', '9557', 'n', 'z', 4857, 3121, 'o', 4961, 'B', 'w', 2757, 'F', 5393, 'e', 'I', 6007, 317, 501, 3881, 'j', 1455], ['S', 6173, 'd', 'g', '7197', 't', '1109', 'G', '3387', 'O', 'k', 'M', 'a', 'v', '5417', 'T', '2147', 'D', 'U', '6633', '1001', '4199', 'O', '2695', '9745', '1885', 'R', '9557', 'B', 997, 'O', 'Q', 'Y', 4541, 8951, 'Q', 5665, 'c', 8861, 'C', 1815, 'G', 'u', 6343, 9673, 2315, 9851, 'S', 'P', 'z', 'Z', 1917, 4577]
answer:

d, g, 7197, t, 1109, G, 3387, O, k, M, a, v, 5417, T, 2147, D, U, 6633, 1001, 4199, O, 2695, 9745, 1885, R, 9557