TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: ['R', 't', 'y', '2887', 'x', 4883], [5691, 9457, 'y', '2887', 'u', 'Y']

SOLUTION: y, 2887

PROBLEM: [4665, 'U', 1617, 4891, 3015, 'k', '9381', '4077', 'f', 'T', 'G', 'z', '9879', 'q', 'f', 'g', 'G', '8765', 'D', '1755', 'B', 'H', 'y', 6819, 9689, 4667, 6651, 'Z', 4359, 3239, 'k'], [4575, 7833, 7267, 't', 'C', 'k', '9381', '4077', 'f', 'T', 'G', 'z', '9879', 'q', 'f', 'g', 'G', '8765', 'D', '1755', 'v', 4883, 'l', 3055]

SOLUTION: k, 9381, 4077, f, T, G, z, 9879, q, f, g, G, 8765, D, 1755

PROBLEM: [943, 4963, 'N', 'x', 'M', '6061', '3523', 'i', '5889', '6055', '7889', 'I', '9959', '2815', 'R', '2373', '325', 'D', 'd', 'Q', '5401', 'M', 'P', 'm', 5031, 'z', 3853, 'A', 4083, 'X', 5771], [2777, 'b', 'P', 'i', 'B', 'x', 9983, 'g', 'x', 9013, 4895, 7861, 'F', 'd', 3881, 4959, '6061', '3523', 'i', '5889', '6055', '7889', 'I', '9959', '2815', 'R', '2373', '325', 'D', 'd', 'Q', '5401', 'M', 'O', 'p', 'O', 6571, 735, 'n', 3455, 'I', 2715, 'F', 'g', 'C', 'm', 'Y']

SOLUTION:
6061, 3523, i, 5889, 6055, 7889, I, 9959, 2815, R, 2373, 325, D, d, Q, 5401, M