In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['W', 'L', 'n', 'C', '7929', '239', '2351', 'G', 'a', 's', '9339', 'K', 'Z', '1333', 'G', 'q', 'Y', 'l', 'M', 'u', 'c', '849', '635', 'A', 'X', 'o', 779, 'q', 5199, 9093, 5907, 'S', 'R', 'b', 387, 'd', 'p', 7273, 1835, 'G', 1733, 9627, 'X', 5147, 'C'], ['r', 'T', 'U', 's', 3539, 2153, 'm', 'w', 'd', 8215, 'z', 'V', 'r', 'q', 'z', 'y', 'l', 'c', 8815, 4863, '7929', '239', '2351', 'G', 'a', 's', '9339', 'K', 'Z', '1333', 'G', 'q', 'Y', 'l', 'M', 'u', 'c', '849', '635', 'A', 'X', 'u', 'J', 'J', 6389, 4399, 'M', 'W', 'H', 8901, 5303, 5489, 3127]