In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6755, 'V', 'j', 7681, 'V', 'B', 881, 2507, 'i', 'm', '6571', 'B', 'y', 'k', '503', 'C', 'g', '4783', '5807', 'P', '8353', '9679', '71', 't', 2057, 4625, 2119, 'z', 'm', 'y', 1257, 'o', 'z', 4285, 'E'], ['h', 's', 933, 3249, 'm', '6571', 'B', 'y', 'k', '503', 'C', 'g', '4783', '5807', 'P', '8353', '9679', '71', 'Z', 2049, 6569]