In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 'x', 7945, 8217, 8429, 5091, 8127, 'h', 'E', 673, 7197, 'u', 1947, 'C', 'W', 9539, 'z', 'P', 'D', 1537, '4575', '4159', '6509', 'f', '3499', 'U', '8957', 'f', 'A', 'f', '5651', '4369', '9515', 'V', 'J', 'W', 'x', 'l', '359', '7827', 'E', 'y', 'U'], [9533, 'T', 5643, 'i', 'N', '4575', '4159', '6509', 'f', '3499', 'U', '8957', 'f', 'A', 'f', '5651', '4369', '9515', 'V', 'J', 'W', 'x', 'l', '359', '7827', 'E', 'X', 'C', 4553]