In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['u', 9235, 'Y', 3637, 'Q', 895, 'Z', 325, 5481, 9719, 'b', 'x', 1171, '8867', '6481', '9815', 'N', '8621', '8573', 'R', 'K', '8009', '519', 'Y', 'I', '6473', '3967', '37', '1675', 'W', 'N', '3237', 'X', 'p', 's', 'W', 8415, 3425, 'Y', 7325, 4645, 9089, 'Z'], [8883, 9103, 9639, 3701, 'N', 2489, 1873, 'q', 'p', 9167, 3177, 6931, 'j', '8867', '6481', '9815', 'N', '8621', '8573', 'R', 'K', '8009', '519', 'Y', 'I', '6473', '3967', '37', '1675', 'W', 'N', '3237', 'X', 'Y', 'M', 3919, 'E', 9363, 't', 'a', 'j', 2683, 8749, 5775, 1119, 'm', 2567, 1719, 'z']