TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: ['D', 'B', 6407, 'L', 'P', 'B', '4529', 'r', 's', 7599, 373], ['f', 'E', 'L', 'P', 'B', '4529', 't', 3723]

SOLUTION: L, P, B, 4529

PROBLEM: [3277, 9365, 4973, 'q', 'S', 6337, 3661, 'Q', 'J', 'c', '3205', '2707', '1869', '1285', 'z', 'c', 'l', 'w', 5939, 6533, 'h', 1877, 10017, 'q'], ['L', 8235, 'n', 'Q', 'J', 'c', '3205', '2707', '1869', '1285', 'z', 'c', 'O', 1591, 'C', 2553, 2613, 'E', 3577, 'u']

SOLUTION: Q, J, c, 3205, 2707, 1869, 1285, z, c

PROBLEM: [6291, 4241, 4183, 2715, 'r', '6815', 's', 'E', '9693', '9357', 'j', 'o', 'D', 'd', 4911], ['W', 6199, 'q', 'v', 'I', 'G', 'y', 'r', '6815', 's', 'E', '9693', '9357', 'j', 'c', 4563]

SOLUTION:
r, 6815, s, E, 9693, 9357, j