TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: [2787, 'N', 'I', 'M', 'x', '3825', 'r', '1041', 'y', 'a', 'v', 6057], ['F', 6523, 'x', '3825', 'r', '1041', 's', 'C', 3001, 8425]

SOLUTION: x, 3825, r, 1041

PROBLEM: [7491, 'w', 'F', 2929, '6969', '2729', '4371', '6153', 'a', 'r', 'y', 'h', 'y', 'g', 'C', '1381', '5801', '8697', '4093', 'X', 'n', 821, 1983, 'S', 6305, 'O', 6533, 'q', 901, 'U', 2911], [3143, 1605, 4373, 'T', 7055, '6969', '2729', '4371', '6153', 'a', 'r', 'y', 'h', 'y', 'g', 'C', '1381', '5801', '8697', '4093', 'r', 'Z', 943, 861, 8883, 'b', 'n', 3409, 8943, 'M']

SOLUTION: 6969, 2729, 4371, 6153, a, r, y, h, y, g, C, 1381, 5801, 8697, 4093

PROBLEM: ['x', 4059, 'l', '5627', 'w', 'Z'], [7125, 2369, 'l', '5627', 'N', 'X']

SOLUTION:
l, 5627