In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6765, 2217, 'A', 929, 7975, 'x', 'N', 7059, 4863, 'I', 'O', 'F', 1265, 'i', 'j', '2185', 't', 'j', 'd', 'C', '6089', 'p', '6175', 'F', '785', 'k', '4043', 'r', 'v', 'h', 'N', 's', '3373', '1579', 'f', 'W', 'F', 'W', 6123, 'c', 4491, 'O', 'B', 'R'], [3779, 'P', 'Q', 'E', 8645, 'o', 1533, 1465, 's', 'w', 1909, 8835, 2715, 9965, 7131, 397, 2555, '2185', 't', 'j', 'd', 'C', '6089', 'p', '6175', 'F', '785', 'k', '4043', 'r', 'v', 'h', 'N', 's', '3373', '1579', 'u', 'g', 'F', 7077, 'e', 'D', 'x', 9003, 't', 'b']