In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1385, 'y', 4053, 8453, 471, 2743, 'o', 329, 661, 1553, 'O', 's', 'n', 'i', 215, 'I', '7649', '57', '3969', 'E', 'G', '6809', '2355', 'B', 'n', '8823', '647', 'I', '7895', '3355', '7181', '5607', '2505', 'b', '193', 'W', 'r', 'n', 'o', 7817, 263], ['V', 'x', 3389, 6289, 3725, 3577, 1625, 'M', 'M', 209, 2323, 2437, 'c', 'n', 225, 'u', 1737, 'I', '7649', '57', '3969', 'E', 'G', '6809', '2355', 'B', 'n', '8823', '647', 'I', '7895', '3355', '7181', '5607', '2505', 'b', '193', 'W', 'r', 'n', 'm', 'J', 5631, 639, 6111, 2903, 'H', 's', 9211, 4331, 'm', 3993, 'u', 'j', 'm', 6821, 'U']