In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['C', 'c', 'u', 'B', 9975, 9349, 1653, 'f', 5539, 'C', 7383, 6997, '6551', 'b', 'P', '955', 'h', '5449', 'C', '851', '2193', 'i', 'd', 'I', '83', '7547', 'e', '1035', 'D', '5667', 'w', '6155', 'O', '3267', '4651', 'O', 7027, 6533, 8353], ['x', 'D', 9933, 'u', 8577, 9213, 3015, 1269, 9513, 'R', 7577, 4275, 'm', 'i', 273, 'R', 'j', 2955, 8099, 'B', 'V', 9375, '6551', 'b', 'P', '955', 'h', '5449', 'C', '851', '2193', 'i', 'd', 'I', '83', '7547', 'e', '1035', 'D', '5667', 'w', '6155', 'O', '3267', '4651', 'b', 'u', 4805, 6831, 'm', 'w', 'B', 'l', 'u', 'Y', 5941, 8639, 'A', 3961, 'm', 4861]