In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6145, 'K', 2757, 8923, 2487, 7837, 'd', 6019, 7339, 743, 9397, 'U', 985, '7421', '2983', 'r', '4263', '1871', 'R', '6553', '3289', '9983', '8043', 'j', 'b', 'k', 'I', '5797', 'P', 'b', 'o', 'v', '4925', '6293', '9283', 'k', '8347', '877', 'P', '7377', '7923', 'e', 551, 'Q', 'S', 'j', 'N', 'j', 6367, 6227, 'K', 897, 4159, 2387], ['V', 573, 'j', 7873, 5645, 7687, 4903, '7421', '2983', 'r', '4263', '1871', 'R', '6553', '3289', '9983', '8043', 'j', 'b', 'k', 'I', '5797', 'P', 'b', 'o', 'v', '4925', '6293', '9283', 'k', '8347', '877', 'P', '7377', '7923', 'A', 'd', 5019, 'C', 1111, 1267, 'z', 'h', 'a', 3975, 1575, 2587, 'I', 'v', 'b', 1811]