In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['J', 'b', 'R', 'v', 6421, 'i', 4179, '3583', '7897', '9525', 'b', '4163', '5465', '255', '5923', 't', 9093, 9035, 8487], ['V', 'j', '3583', '7897', '9525', 'b', '4163', '5465', '255', '5923', 'F', 6281, 8109, 'R', 2589]