In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'C', 1361, '4157', 'K', 'A', 'J', 'A', '8447', '63', 'L', 'l', 'P', '4599', 'x', 'n', 'd', 'Z', '4683', 'j', 'U', 'M', 1127, 8279, 'h'], [887, 9199, 'R', 2345, 'E', 'q', '4157', 'K', 'A', 'J', 'A', '8447', '63', 'L', 'l', 'P', '4599', 'x', 'n', 'd', 'Z', '4683', 'Q', 3069, 1823, 't', 'X', 'b']