In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['t', 'q', 73, 'f', 'k', 'r', 'y', 'J', 6729, 'u', 'n', 9233, 'Z', 8611, 1999, 883, 5745, 4201, 'E', 9501, 8137, 'O', 'D', 785, 'm', 8259, 'i', 'm', 'J', 'c', 'D', 'u', '7627', '4159', '2163', 'Z', 'J', '8297', 'F', '3441', 'I', '5775', 'p', 'D', 'F', 'a', '5707', '8825', '8067', '5723', 'z', 'D', 'x', 'r', 'N', 'D', 'f', 'z', 4677, 'H', 'k', 's', 'w', 9255, 'M', 3699, 'r', 57, 'W', 7165, 6831, 'z', 'H', 4113, 'u', 'o', 2119], ['U', 'c', 6297, 4559, 'l', 'L', 'k', 'u', 'w', 4299, 's', 7417, 7715, 3003, 2403, 'R', 'L', 7619, 5611, 'Y', 's', 'g', 741, 2235, 899, 9743, 8163, 'J', 'c', 'D', 'u', '7627', '4159', '2163', 'Z', 'J', '8297', 'F', '3441', 'I', '5775', 'p', 'D', 'F', 'a', '5707', '8825', '8067', '5723', 'z', 'D', 'x', 'r', 'N', 'D', 'K', 5607, 'C', 'q', 1737, 1677, 'B', 'x', 3003, 9451, 7765, 3901]