In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[1119, 4237, 4525, 'q', 'D', 'u', '1715', '3429', '2773', 'X', '645', 'L', 'K', 'y', 'F', '5205', 'S', 'v', '3415', 'I', 'R', '2591', 'p', '6557', 'G', '5979', 'V', 'j', 'U', '3561', 'O', 1835, 4941, 'u', 9975, 1093, 725, 'V', 'l', 4621, 6475, 9279, 9619, 'Z', 'B', 3633], ['a', 'B', '1715', '3429', '2773', 'X', '645', 'L', 'K', 'y', 'F', '5205', 'S', 'v', '3415', 'I', 'R', '2591', 'p', '6557', 'G', '5979', 'V', 'j', 'U', '3561', 'C', 5489, 731, 6355, 'i', 3553, 8189, 'l', 2183, 419, 'f', 2833, 7039, 'r', 2209, 'v', 'Z', 1459]