In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Q', 9523, 'x', 7075, 'D', 6681, 'F', 6853, 8277, 4609, 'c', 'Y', 'A', 3933, 'm', 9095, 6313, 6021, 's', '6429', '3179', '7109', 'y', 'P', '8369', 'y', '7669', '897', '6487', 'U', '3273', '7407', '2447', 'F', '7579', '4653', '7619', '2241', 'G', 'y', '239', '7193', 'Q', 'u', 'a', 521, 'I', 8901, 3913, 8569, 3299, 'A', 1617, 'g', 'Q', 'j', 'R', 1257, 'g'], [7959, 'x', 'a', 'S', 'Z', 's', '6429', '3179', '7109', 'y', 'P', '8369', 'y', '7669', '897', '6487', 'U', '3273', '7407', '2447', 'F', '7579', '4653', '7619', '2241', 'G', 'y', '239', '7193', 'Q', 'J', 4099, 'w', 3433, 'a', 5767, 83, 'z', 7783, 609]