In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6905, 2531, 'v', 'E', 'f', 5407, 1771, 4537, 7617, 3083, 'O', 9841, 'O', 7205, 'W', '8021', 'f', 'y', 'v', 'y', 'H', '5537', 's', '3145', 'v', 'I', '7903', 'V', 'l', 'G', 'm', '3555', '2705', 'E', '5461', 'S', 'l', '7233', 'S', 7347, 5491, 's', 'h', 4233, 5647, 8463, 'L', 'Q', 'd', 't', 3883, 'D', 4203], [1765, 'S', 5313, 3417, 4957, 'K', 'x', 'w', 'T', 8351, 7193, 'j', 4005, 'W', 1755, 'M', 'Z', 1059, 5221, 'V', 3579, 3705, 'M', '8021', 'f', 'y', 'v', 'y', 'H', '5537', 's', '3145', 'v', 'I', '7903', 'V', 'l', 'G', 'm', '3555', '2705', 'E', '5461', 'S', 'l', '7233', 6765, 'o', 'p', 4497, 'c', 2931, 'K', 'f', 823, 6547, 's', 'M', 'Q', 'j', 'p', 687, 4707]