In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['P', 8059, 'A', 385, 't', 1999, 269, 'T', 'B', 'S', '5291', 'b', 'x', 'o', '7813', 'R', 'D', '1301', '2079', 'H', '3587', '1325', '8977', '5565', 'u', 'v', 'D', 'I', '6267', 'H', '6663', 'I', 'B', 'f', '2383', 'K', 6409, 'W', 'h', 9673, 1829, 'K', 'A'], [1099, 1609, 'q', 9603, 'B', 3251, 'o', 'x', 1197, 'O', 'u', 't', 'K', 'c', 1185, 'l', 'v', 'e', 'q', 9255, 'u', 'S', '5291', 'b', 'x', 'o', '7813', 'R', 'D', '1301', '2079', 'H', '3587', '1325', '8977', '5565', 'u', 'v', 'D', 'I', '6267', 'H', '6663', 'I', 'B', 'f', '2383', 'V', 6939]