In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['E', 121, 4539, 'a', 'M', 'H', 'D', 'B', 'k', 'y', 'O', 'I', 'R', '747', '2793', '4181', '3073', 'C', 3487, 3597, 2591, 'T', 703, 't', 'H', 5545, 4789, 4737, 3597], [7225, 'A', 'h', 9949, 1879, 6461, 5389, 5247, 239, 2545, 't', 'e', 9321, 'w', 'a', 'M', 'H', 'D', 'B', 'k', 'y', 'O', 'I', 'R', '747', '2793', '4181', '3073', 'M', 9071, 9787, 2171, 9047, 2143, 'r', 'Z', 6511]