TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: ['U', 1887, '8423', 'j', '8053', 'g', '5441', 'H', 'j', 3847, 'd', 'J', 1971, 'M'], ['y', 'T', 'C', 'z', 6299, 5393, '8423', 'j', '8053', 'g', '5441', 'H', 'x', 'f', 4189, 'h', 'e', 6577]

SOLUTION: 8423, j, 8053, g, 5441, H

PROBLEM: [7969, 7833, 9069, 'l', 'N', 7935, 7821, 'y', 'q', 'r', 'G', 'O', 'w', 'n', 'h', 'j', 'X', '9705', 'U', '7943', 'K', 'r', '4841', '2141', 'd', '2007', 'O', '5005', 'b', '7367', 'T', 'C', 't', '6865', 'Y', '1263', 'M', 'c', 'u', 5133, 'x', 117, 5841, 'd', 'z', 'A', 3299, 'O', 'W', 'E', 'Q', 8547, 'w', 5235, 9011], [2305, 'g', 'Y', 'v', 6105, 'm', 6457, 2715, 'b', 7811, 3401, 'H', 'h', 'j', 'X', '9705', 'U', '7943', 'K', 'r', '4841', '2141', 'd', '2007', 'O', '5005', 'b', '7367', 'T', 'C', 't', '6865', 'Y', '1263', 'K', 'Z']

SOLUTION: h, j, X, 9705, U, 7943, K, r, 4841, 2141, d, 2007, O, 5005, b, 7367, T, C, t, 6865, Y, 1263

PROBLEM: ['x', 9149, 4635, 5625, 'n', 3023, 2253, 'y', 't', 'Z', 'H', 'G', '5797', 'r', '8267', 'h', 'D', 2959, 'b', 9407, 'o', 8379], [3921, 3069, 'Z', 9395, 'y', 't', 'Z', 'H', 'G', '5797', 'r', '8267', 'O', 'V']

SOLUTION:
y, t, Z, H, G, 5797, r, 8267