In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7415, 3383, 'b', 'y', 'j', 'S', '2231', 'M', 'J', '8009', '9171', 'U', '7067', 'l', '1499', '6865', 'F', '9545', 'w', '7351', 'T', '2465', 'A', 4811, 'N', 'V', 'S', 'G', 9529, 'I', 'f', 'o', 'H', 883, 4211], ['Q', 4545, 'g', 'y', 'p', 6183, 2937, 3225, 8075, 's', 823, 5353, 2183, 8781, 1061, 'v', 845, 8265, 'y', 'j', 'S', '2231', 'M', 'J', '8009', '9171', 'U', '7067', 'l', '1499', '6865', 'F', '9545', 'w', '7351', 'T', '2465', 's', 'I', 'P', 8405, 'd', 'g', 6949, 4715, 8049, 'Q']