In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[805, 'x', 835, 'o', 'W', 'y', 3805, 6583, '6379', '195', 'L', '2175', 'M', '835', '3565', 'V', 'w', '2033', 'x', '9687', 'm', '4761', 'f', 'a', 'Z', 5493, 'S', 'm', 5807, 'F', 6425, 't'], ['c', 3477, '6379', '195', 'L', '2175', 'M', '835', '3565', 'V', 'w', '2033', 'x', '9687', 'm', '4761', 'b', 't', 5369, 9131, 'M', 'Y']