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

['R', 't', 'y', '2887', 'x', 4883], [5691, 9457, 'y', '2887', 'u', 'Y']
y, 2887

['M', 'w', 9985, 4793, 'R', '6127', '5051', 'e', '6973', '5935', 'e', '8843', '8801', 'q', '4307', 'R', '2797', 'e', '3417', 'Q', 'X', 'b', 9903, 3977, 967, 'i', 'a', 2753, 'L'], [6925, 'w', 1371, 'w', 8257, 't', 6667, 'I', 4609, 5231, 'L', 'R', '6127', '5051', 'e', '6973', '5935', 'e', '8843', '8801', 'q', '4307', 'R', '2797', 'e', '3417', 'Q', 'X', 'U', 'x', 'w', 'H', 'n', 3339, 3271, 1439, 'A', 6725, 3041, 'R']
R, 6127, 5051, e, 6973, 5935, e, 8843, 8801, q, 4307, R, 2797, e, 3417, Q, X

[1115, 7239, 'Q', 'S', 1737, 'n', '8225', '893', 'P', 'v', '6469', '5749', 'N', 'V', 5597, 'h', 7911, 9125, 7519, 'I', 'S'], [4395, 819, 9559, 9829, 5835, 'n', '8225', '893', 'P', 'v', '6469', '5749', 'N', 'E', 2299, 3403]

n, 8225, 893, P, v, 6469, 5749, N