In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['r', 8081, 1185, 'Z', 5533, 'b', 3845, 'L', 'c', 4401, '6737', 'K', 'h', '6853', 'I', '2855', 't', '5009', '7967', 'U', 'u', '5003', '5267', 'y', '8363', 'h', 3453, 'i', 1941], [7679, 's', 2457, 'u', 505, 'R', 5775, 'u', '6737', 'K', 'h', '6853', 'I', '2855', 't', '5009', '7967', 'U', 'u', '5003', '5267', 'y', '8363', 'N', 'h', 2689, 'k', 3395, 8251, 2857]