In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['O', 1945, 8957, 'i', 'H', 'T', 1259, 6167, 'X', 2331, 'R', 2501, 3149, '7137', '3163', '5461', '2523', 'C', '7769', '8389', 'A', '2183', 'c', '1925', '9549', 'C', '2001', '407', 'R', 'b', '2635', '9861', 'x', 3603, 1135, 'X', 2087, 9291, 3087, 9955, 8455, 'i', 6205, 'G'], [8315, 855, 897, 'q', 5675, 'K', 2543, 'E', 'm', 635, 361, 433, 9565, 4621, 'a', 'O', 7199, 'L', 'y', '7137', '3163', '5461', '2523', 'C', '7769', '8389', 'A', '2183', 'c', '1925', '9549', 'C', '2001', '407', 'R', 'b', '2635', '9861', 'K', 4863, 'w', 'u', 'c', 'f', 'Y', 1601, 5271, 9155, 123, 'r', 'W', 'W']