In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['N', 's', '1387', 'Z', '2055', '6101', 'P', 'R', 'f', 't', 'r', 'e', 'O', '4079', 'n', 's', 'P', 'c', 'B', 'X', 'U', 'e', 'C', 'n', 'r'], ['U', 8585, 9227, 3135, 'u', 'Z', 'I', 3769, 283, 3869, '1387', 'Z', '2055', '6101', 'P', 'R', 'f', 't', 'r', 'e', 'O', '4079', 'n', 'g', 's', 'f', 'x', 1359, 'T', 7815, 7083]