In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['R', 'C', 't', 'w', 'j', 9849, 1831, 4071, '3535', '3509', '4629', '6641', 'v', '9699', 'w', '8619', '8405', '361', 'r', 9669, 'k', 635, 'T'], ['s', 7949, 283, 'l', 'S', 465, 'y', 8583, 2537, 'f', '3535', '3509', '4629', '6641', 'v', '9699', 'w', '8619', '8405', '361', 'Q', 'i', 3765, 137, 'n', 'X', 'p', 'S']