In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['L', 'v', 'C', 'k', '1981', '5679', '225', 'c', 'H', '3831', '2341', '4061', '2041', 'o', '3561', 'G', '6259', 'b', '9819', 'w', '7083', 'J', 'T', '3393', 'u', 'U', 'o', 5291, 851, 'a', 725, 'O', 9923, 'Q', 2733, 1865, 6021, 699, 'W', 8461, 9929, 9929, 7401, 5031], [4047, 1601, 3739, 9893, 's', 931, 'l', 9987, 'E', 'J', 5467, 'y', 'C', 'k', '1981', '5679', '225', 'c', 'H', '3831', '2341', '4061', '2041', 'o', '3561', 'G', '6259', 'b', '9819', 'w', '7083', 'J', 'T', '3393', 'u', 'U', 'Y', 1483, 'B', 3483, 's', 723, 'R', 'C', 5591, 6843, 'R', 'd', 'Z', 't', 4085, 'j', 3181, 3125]