In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 3111, 'H', 3207, 7609, 'c', 'm', 4569, 'c', 'A', 'J', 6357, 'Q', '7347', '9821', '9215', 'V', '3301', '10021', 'I', 'J', 'X', '7149', 'L', 'N', '4481', 'U', 't', '4779', 'c', 'V', 'v', 'W', 'Y', 'x', 5351, 'E', 'Q', 2895, 'a', 7869, 9893, 'L', 6121, 'P', 'A', 25], ['H', 2711, 'N', 1941, 9425, 'e', 7229, '7347', '9821', '9215', 'V', '3301', '10021', 'I', 'J', 'X', '7149', 'L', 'N', '4481', 'U', 't', '4779', 'c', 'h', 3151, 3703, 'Y', 'Q', 'T', 6871, 3493, 'k', 'L', 3877, 3517, 'j']