In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1683, 43, 'r', 745, 'E', 'E', 'q', '1137', 'Q', '6327', '691', 'b', '5653', '1079', '929', '8455', 'n', 'h', '9503', 'U', 1899, 545, 'J', 'A', 4979, 'n', 789, 'z'], ['S', 'P', 1123, 3333, 9575, 911, 'F', 'B', 'O', 'E', 'q', '1137', 'Q', '6327', '691', 'b', '5653', '1079', '929', '8455', 'n', 'h', '9503', 'I', 6253, 'L', 5933, 9101, 'M', 1419, 5749, 'H', 'w', 5069, 6779, 4751]