TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: [8471, 8309, 'g', 'f', 5019, 'd', 8129, 'r', 'e', 'l', 'B', '7297', 'c', '2785', '919', 'B', '5459', 'L', 5985, 2953, 6897, 'n', 9209, 3281, 'w', 4011, 't'], ['g', 7529, 'q', 6213, 'c', 'l', 6053, 'r', 'e', 'l', 'B', '7297', 'c', '2785', '919', 'B', '5459', 'B', 2159, 7633, 8707]

SOLUTION: r, e, l, B, 7297, c, 2785, 919, B, 5459

PROBLEM: [6137, 1795, 'J', 9247, 'r', 'w', 'E', 's', '687', 'N', '8213', '1751', '2567', '5673', 'y', '6821', '6863', '8847', 'z', 's', 'N', 'z', 'J', 7209, 'S'], [3317, 657, 3971, 8789, 4953, 9693, 'O', 7845, 'r', 'w', 'E', 's', '687', 'N', '8213', '1751', '2567', '5673', 'y', '6821', '6863', '8847', 'z', 's', 'N', 'z', 'M', 'A', 'B', 'l']

SOLUTION: r, w, E, s, 687, N, 8213, 1751, 2567, 5673, y, 6821, 6863, 8847, z, s, N, z

PROBLEM: [6719, 'h', 4905, 2097, 'O', 'Y', 'Z', 'q', '6779', '8877', '4431', 'f', '6241', 'j', 'R', 2803, 'h', 'w', 6941], [8687, 9831, 'T', 'g', 'i', 'J', 'Z', 'q', '6779', '8877', '4431', 'f', '6241', 'L', 'C', 8969]

SOLUTION:
Z, q, 6779, 8877, 4431, f, 6241