In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
Q: ['d', 5155, 'y', 't', 'z', 2297, 'b', 'P', 'a', 'I', 7949, 'f', 'Y', 'H', 'u', 'S', 'y', 'A', 'B', 5505, '5357', '6519', 'N', 't', '7889', 'g', 'R', '1421', 'S', '6947', 'h', 'i', '8755', '6107', '1467', 'l', '4195', '9647', 'k', '323', 'P', 'r', 6883, 'Y', 'n', 'G', 'K', 'q', 'H', 'z', 7541, 2533, 6833, 8927, 'K', 8647], [1833, 681, '5357', '6519', 'N', 't', '7889', 'g', 'R', '1421', 'S', '6947', 'h', 'i', '8755', '6107', '1467', 'l', '4195', '9647', 'k', '323', 'U', 9459, 2103, 'F', 5669, 6115, 871, 209, 5199, 7123, 'D', 'E']
A: 
5357, 6519, N, t, 7889, g, R, 1421, S, 6947, h, i, 8755, 6107, 1467, l, 4195, 9647, k, 323