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

[9639, 'C', 9853, 'A', 'k', 633, 1303, 6893, 1461, 'O', 'i', 'E', 'L', 8811, 1123, 1523, 285, 'G', 6701, 'v', 'E', 2799, 9503, '6601', 'Z', 'H', '2771', '1129', 'G', '3897', '3577', '1459', '6281', '7955', '3751', '5339', 'R', '4343', '9107', 'Q', 'H', 'r', 'I', 'n', '5191', 'E', '3385', '9711', 'g', 'W', 'O', 9249, 3181, 3455], ['x', 'l', 7827, 8297, 'D', 5453, 6611, '6601', 'Z', 'H', '2771', '1129', 'G', '3897', '3577', '1459', '6281', '7955', '3751', '5339', 'R', '4343', '9107', 'Q', 'H', 'r', 'I', 'n', '5191', 'E', '3385', '9711', 'g', 'W', 'y', 4363, 8699, 'H', 'h', 4081, 'F', 'S', 8027, 'p', 'j']
6601, Z, H, 2771, 1129, G, 3897, 3577, 1459, 6281, 7955, 3751, 5339, R, 4343, 9107, Q, H, r, I, n, 5191, E, 3385, 9711, g, W

[5555, 'e', 'k', '4653', 'S', 'q', 'o', 'z'], [8655, 3981, 'k', '4653', 'S', 'q', 'k', 8991, 8619, 's']
k, 4653, S, q

['b', 'N', 'O', 'C', 'l', 'B', '9069', '3711', '8703', '8677', '4651', '1699', 'I', 'm', '3969', '6219', 'W', '8583', '2693', 'Y', 'b', 's', 1341, 5657, 'P', 1779, 'Z', 'b', 4519, 6227, 3981, 'r', 1323, 'w', 'F', 885, 'y'], ['g', 'v', 'l', 'B', '9069', '3711', '8703', '8677', '4651', '1699', 'I', 'm', '3969', '6219', 'W', '8583', '2693', 'Y', 'b', 'e', 3235, 'H', 3697, 'Y', 'P', 2527, 4123, 8317, 4709, 'z']

l, B, 9069, 3711, 8703, 8677, 4651, 1699, I, m, 3969, 6219, W, 8583, 2693, Y, b