In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 9479, 'Y', 3071, 5013, 'f', 2767, 1941, 'J', 'l', 6721, 3589, 9863, 'Y', 'T', 'u', 'H', 2553, 'g', 'u', 617, 'P', 'H', 'b', 'e', 'a', 'w', 'J', '9801', '5123', 'O', 'P', 'r', 'I', 'm', '1015', '481', 'Z', '709', 'u', '5389', 'Y', 'z', '8077', 'a', 'f', '1287', '2963', '8807', 'y', 's', 4913, 5899, 821, 4929, 'x', 'T', 6393, 'f', 'B', 'd', 1629, 7607, 5543, 'K', 'O', 'Y', 2823, 8797, 5283, 'B', 3471, 'a'], [5751, 1135, 6767, 4443, 'l', 't', 'A', 'D', 's', 2613, 7335, 'J', 2579, 'w', 'l', 7183, 7655, 'u', 4855, 5771, 'D', 7173, 't', 'r', 'o', 'D', 'J', 'H', 'b', 'e', 'a', 'w', 'J', '9801', '5123', 'O', 'P', 'r', 'I', 'm', '1015', '481', 'Z', '709', 'u', '5389', 'Y', 'z', '8077', 'a', 'f', '1287', '2963', '8807', 'H', 'A', 1831, 'G', 3803, 'R', 'f', 'B', 2475, 9555, 257, 5101, 2251, 'I', 'W', 'B', 'C', 'd']