In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['E', 'M', 'B', 4331, 'f', 3649, 'r', 7345, 7215, '4923', '4941', '4355', 'v', '5773', '1229', '1517', '4395', '5783', '161', 'b', 'U', 5067, 3717, 'J', 'u', 'X', 3429], [4891, 'Z', 4213, 'f', 'z', 't', 2777, 6509, 9497, 6257, 1147, '4923', '4941', '4355', 'v', '5773', '1229', '1517', '4395', '5783', '161', 'b', 'a', 9125, 'k', 8711, 'w']