In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4345, 'k', 9329, 'x', 'D', 6743, '1991', '6555', '4473', 'C', 'S', 'Y', '3325', '59', 'C', 'Y', 'a', 'Y', '9029', '7983', '415', '5583', 'a', '1479', 'q', '1853', '7773', 'u', '5275', '8367', '985', 'w', 5025, 'k', 2361, 'O', 'i', 2883, 7143, 257, 3195, 6449, 3873, 'v', 6895, 'V', 6711, 1153, 9001, 7969, 'm', 7367], ['x', 't', 'O', 8205, 'z', 2737, 4539, 1243, 'p', 'W', 3971, 'D', 'f', 9069, 4047, 'S', 'I', 'L', 'g', 'G', '1991', '6555', '4473', 'C', 'S', 'Y', '3325', '59', 'C', 'Y', 'a', 'Y', '9029', '7983', '415', '5583', 'a', '1479', 'q', '1853', '7773', 'u', '5275', '8367', '985', 'f', 'H', 'd', 'J', 671, 'N', 'q', 'f', 'e', 7609, 6985, 'o', 'M', 6471, 'Z', 5463, 5417, 'l', 'y', 'r', 'P']