In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9781, 'e', 's', 8215, 'j', 'I', 'r', 7263, 9515, 'H', 5787, 'S', 9259, 183, 5389, 'o', 111, 7633, '529', 'a', '5413', 'y', 'M', 'b', 'b', 'l', 'v', '2359', 'R', 'T', 'E', 'A', 'Y', '8547', 'l', 'R', '4113', '2697', 'L', 'j', 'y', '3789', 'r', 'u', 4139, 755, 7635, 6759], ['Y', 5089, 'T', 9905, 'S', 5271, 'n', 9185, 'T', 4589, '529', 'a', '5413', 'y', 'M', 'b', 'b', 'l', 'v', '2359', 'R', 'T', 'E', 'A', 'Y', '8547', 'l', 'R', '4113', '2697', 'L', 'j', 'y', '3789', 'r', 'W', 5461, 2947, 9101, 'P', 'E', 'U']