In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['K', 'o', 'r', 'm', 'D', 5447, 'a', 't', '3139', 'I', '4909', 'c', 'b', '8557', '6869', 'E', 'x', '527', 'N', 'C', '3543', 'k', 'O', '7523', '5801', 'b', '7691', '4611', 't', 'C', '6189', '5315', '3991', '5001', '3507', '4787', 'U', '5637', 'Z', 'P', 2665, 'V', 'd', 4303, 'O', 245, 'p', 'm', 5769, 'N', 'U', 'h', 'b', 1917, 4935, 'T', 'v', 'V', 6443, 1729, 't', 5597, 1261, 9997], ['S', 'X', 9821, 2285, 'n', 225, 4083, 'w', 'x', '3139', 'I', '4909', 'c', 'b', '8557', '6869', 'E', 'x', '527', 'N', 'C', '3543', 'k', 'O', '7523', '5801', 'b', '7691', '4611', 't', 'C', '6189', '5315', '3991', '5001', '3507', '4787', 'U', '5637', 'K', 'P', 'U', 5345, 6509, 'u', 4993, 7145, 'r', 'y']