In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['p', 8147, 'F', 3239, 'v', 4895, 'L', 'o', 9163, 7207, 'L', 'e', 4959, 'l', 'V', 'b', 'P', '437', '1325', '761', '7553', '3925', '6989', 'P', '4027', 'H', 'Q', 'b', '8797', 'o', 'X', '8855', '3235', '8081', 'p', 'D', 'n', '3661', 'L', '6633', '8811', 'R', 'J', 'V', 9281, 6067, 213, 941, 5825, 5539, 'W', 4531, 813, 5787, 'i', 4267, 'M', 'r', 'T', 4851], [1715, 'm', 3335, 9729, 'Q', 'C', 9847, 1995, 9687, 4819, 'Z', 8443, 'y', 'D', 'O', 'x', 'I', 'U', 'r', 'U', 6191, 'P', '437', '1325', '761', '7553', '3925', '6989', 'P', '4027', 'H', 'Q', 'b', '8797', 'o', 'X', '8855', '3235', '8081', 'p', 'D', 'n', '3661', 'L', '6633', '8811', 'R', 'P', 'N', 'V', 'q', 'o', 'w', 2885, 2537, 'J', 7947, 'u', 'T', 8499]