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

['R', 'k', 'g', 4045, 'W', '4923', '9161', '4031', '7443', 'f', 'U', 2683, 'Y'], [943, 'v', '4923', '9161', '4031', '7443', 'f', 't', 'm', 9213]
4923, 9161, 4031, 7443, f

['G', 9195, 'n', 'x', 'A', '3777', 'd', 'K', 'W', '1911', '93', '5157', 'j', 'd', 'L'], ['y', 'I', 8025, 5165, 4825, 'L', 'A', 10001, 'x', 'A', '3777', 'd', 'K', 'W', '1911', '93', '5157', 'E', 'b']
x, A, 3777, d, K, W, 1911, 93, 5157

['l', 'K', 'm', 4045, '1379', 't', 'C', 'r', 'G', 't', 'X', 'd', 3185, 'e', 'a', 'h', 'c'], [8491, 'y', '1379', 't', 'C', 'r', 'G', 't', 'X', 'Q', 1089]

1379, t, C, r, G, t, X