instruction:
In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
question:
[4339, 'i', 7857, 315, 'W', '3573', '689', 'y', '9557', 'J', 'b', '2185', 'i', 7649, 'F', 'g', 6973], ['r', 5097, 5467, 't', 'N', 'Y', 'W', '3573', '689', 'y', '9557', 'J', 'b', '2185', 'l', 837, 643, 2055, 'J', 'I']
answer:
W, 3573, 689, y, 9557, J, b, 2185


question:
['J', 6791, 'x', 'f', 'n', '5565', '4103', 'q', 'n', 'h', '625', '2981', '3243', 'q', '2705', '5505', 's', '4423', 'j', '9819', '3841', 'Z', 'i', 'n', 'R', 9199, 455, 'i'], [4051, 8463, 'i', 6667, 'N', 'k', 'X', 2629, 'I', 'O', 5057, 1059, 4265, 'B', 3819, 'c', 9941, 'R', 'a', 5545, 'x', 'f', 'n', '5565', '4103', 'q', 'n', 'h', '625', '2981', '3243', 'q', '2705', '5505', 's', '4423', 'j', '9819', '3841', 'Z', 'a', 9953, 6229, 'F', 2985]
answer:
x, f, n, 5565, 4103, q, n, h, 625, 2981, 3243, q, 2705, 5505, s, 4423, j, 9819, 3841, Z


question:
[447, 4245, 2287, 2709, 'E', 8831, 'z', 'T', 1623, 'O', 'r', 6883, 1077, 1091, 'R', 'F', 'X', 'k', 'X', 't', 'F', 'l', 'P', 7633, 1081, 'Y', 'Z', 'j', 'V', 'H', '3249', 'c', '5187', '3763', 'g', '1763', 'b', 'C', 'U', '6601', '105', '2059', '1383', '5237', '431', '1595', '997', '3917', '4307', '1523', 'J', 'u', 'k', '1533', '1599', 'y', 'U', 'r', 5011, 'n', 8525, 'C', 'W', 3915, 3349, 'n', 'E', 4155, 'Q', 7845, 'n', 5119, 3433, 4387, 7367, 8053, 'x', 3001, 'a', 'T', 'l', 885, 3649, 'u'], ['s', 'q', 'J', 'V', 'H', '3249', 'c', '5187', '3763', 'g', '1763', 'b', 'C', 'U', '6601', '105', '2059', '1383', '5237', '431', '1595', '997', '3917', '4307', '1523', 'J', 'u', 'k', '1533', '1599', 'y', 'Z', 7459, 9909, 6341, 'o', 'E', 'd', 'q', 'h', 4715, 5089, 'o', 'A', 8033, 6267, 6459, 'U', 6913, 'a', 563, 2573, 5567, 9129, 8301, 1515, 8197, 'i']
answer:

V, H, 3249, c, 5187, 3763, g, 1763, b, C, U, 6601, 105, 2059, 1383, 5237, 431, 1595, 997, 3917, 4307, 1523, J, u, k, 1533, 1599, y