instruction:
In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
question:
['A', 'f', 's', 619, 'P', '6773', '2907', 'j', 'Y', '3815', '5619', '3681', '1259', 'k', 'k', 'p', '7817', 'e', '1227', 'T', '7201', 'o', 'o', 'W', 'U', 'E', '4881', 'h', '9013', '8427', 'W', 'B', '5309', 'V', 'L'], [7877, 9179, 'B', 'F', 'e', 4663, 'd', 7957, 'F', 'F', 'k', 'f', 8559, 'U', '6773', '2907', 'j', 'Y', '3815', '5619', '3681', '1259', 'k', 'k', 'p', '7817', 'e', '1227', 'T', '7201', 'o', 'o', 'W', 'U', 'E', '4881', 'h', '9013', '8427', 'W', 'B', '5309', 'J', 'R', 't', 'J', 'D', 'U', 'x', 'G', 'y', 'L', 7841, 'g', 's', 8385, 1631, 'Z', 6679, 4419, 'Y', 9253, 3709, 'E', 'a']
answer:
6773, 2907, j, Y, 3815, 5619, 3681, 1259, k, k, p, 7817, e, 1227, T, 7201, o, o, W, U, E, 4881, h, 9013, 8427, W, B, 5309


question:
[6161, 9929, 'e', 2649, '8399', 'W', 'G', 'l', '3443', 'W', 'F', 'J', 'g', 'r', 'R', '41', 'c', 'c', '87', 'N', '7757', '2641', 'Z', 'v', 'g', '1365', 'R', '6435', 'J', 'Y', 3203, 5389], ['x', 'p', 7335, 4343, 'R', 6755, 'Q', 8319, 'N', 4111, 'a', 'M', 'n', 5739, 'j', 3435, 'J', 6645, 'O', 4833, '8399', 'W', 'G', 'l', '3443', 'W', 'F', 'J', 'g', 'r', 'R', '41', 'c', 'c', '87', 'N', '7757', '2641', 'Z', 'v', 'g', '1365', 'R', '6435', 'P', 'q', 549]
answer:
8399, W, G, l, 3443, W, F, J, g, r, R, 41, c, c, 87, N, 7757, 2641, Z, v, g, 1365, R, 6435


question:
[3109, 'O', '4271', 'c', 'L', 3547], ['D', 'R', '4271', 'c', 'O', 7223]
answer:

4271, c