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', 2021, 9935, '873', 'T', '9883', 'y', 8789, 'v'], ['g', 7321, '873', 'T', '9883', 'p', 9721]

SOLUTION: 873, T, 9883

PROBLEM: ['z', 3279, 'C', 'F', 9153, 'E', 417, 'P', 6405, 1849, 4819, 'V', 4497, 2031, 'L', 'g', '8015', 'D', 'b', '3659', 'P', 'm', '6013', '6583', '6705', '8449', 'a', 'X', '2087', 'Y', 'L', 'i', 5651, 'y', 'L', 2993, 2605, 6805, 'w', 5731, 'Q', 9359, 'Y', 4267, 2985], ['F', 'x', 5427, 4915, 2541, 'H', 'S', 8953, 'L', 7911, 'b', 'I', 1945, 859, 'i', 'g', '8015', 'D', 'b', '3659', 'P', 'm', '6013', '6583', '6705', '8449', 'a', 'X', '2087', 'Y', 'N', 1971, 'a']

SOLUTION: g, 8015, D, b, 3659, P, m, 6013, 6583, 6705, 8449, a, X, 2087, Y

PROBLEM: [1353, 'U', 8637, 5701, 295, 'e', '5621', '5893', '9729', '3659', '1133', 'U', '123', 'U', '7967', 'N', 'Q', '9243', 'P', 5193, 'k', 'U', 8955, 7953, 'h'], [4251, 9421, 'e', '5621', '5893', '9729', '3659', '1133', 'U', '123', 'U', '7967', 'N', 'Q', '9243', 'q', 'G', 'h', 'u', 'T', 3931, 'k', 4743, 'Z', 't', 'y']

SOLUTION:
e, 5621, 5893, 9729, 3659, 1133, U, 123, U, 7967, N, Q, 9243