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', 897, 't', 1807, 'k', 'P', '5013', '1811', '9411', 'U', 'z', '2793', '3221', '5643', 'j', '1793', '9507', 'J', '6147', 'i', '4383', '723', 'z', 'c'], [2741, 'D', 5443, 'Z', 'k', 129, 3339, 'k', 'T', 'P', '5013', '1811', '9411', 'U', 'z', '2793', '3221', '5643', 'j', '1793', '9507', 'J', '6147', 'i', '4383', '723', 'd', 4353]

SOLUTION: P, 5013, 1811, 9411, U, z, 2793, 3221, 5643, j, 1793, 9507, J, 6147, i, 4383, 723

PROBLEM: [4931, 5661, 8651, 'l', 'd', '9585', 'r', 'U', 'z', '6511', '9443', '2917', 'K', 2179, 5747, 'C'], [3737, 7345, 3921, 'i', 9199, 3269, '9585', 'r', 'U', 'z', '6511', '9443', '2917', 'A', 'd', 185, 'M']

SOLUTION: 9585, r, U, z, 6511, 9443, 2917

PROBLEM: [5773, 3451, 333, 7403, 7921, 'l', '9389', '849', '8321', '7701', 'm', '5293', '7055', 'r', '1355', '1949', 'x', 5223, 'X', 'r'], ['y', 4693, 'k', 'i', 'm', 'l', '9389', '849', '8321', '7701', 'm', '5293', '7055', 'r', '1355', '1949', 'f', 3091, 'q', 'Z']

SOLUTION:
l, 9389, 849, 8321, 7701, m, 5293, 7055, r, 1355, 1949