In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1231, 'a', 9367, '155', 'r', '1473', '5679', '3161', 'L', 'e', 'b', 'm', '9427', '2001', '5293', '3487', 'K', '6467', 'S', 'e', 6603, 'm', 8145, 'L', 's', 1273, 9291, 'X'], [5773, 'D', 'W', 'F', 5987, 'D', 'H', 2095, 'I', 'X', 29, '155', 'r', '1473', '5679', '3161', 'L', 'e', 'b', 'm', '9427', '2001', '5293', '3487', 'K', '6467', 'S', 'C', 'a']