In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7213, 6679, 3625, 1493, 'H', 'A', 'z', '1021', '7423', 'x', 'Z', '9165', 't', 'I', 'G', '9489', 'q', '6287', 'T', '1423', 'm', 'U', '8973', '8551', '7529', 'I', 8637], ['G', 'e', 'P', 'e', 6551, 1749, 'v', 2243, 1459, 'i', 7897, 843, 'H', 'A', 'z', '1021', '7423', 'x', 'Z', '9165', 't', 'I', 'G', '9489', 'q', '6287', 'T', '1423', 'm', 'U', '8973', '8551', '7529', 't', 'W', 581, 6053, 'i', 8841, 'i', 1871, 2399, 'G', 9595, 4507, 2733, 'b', 'X']