TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: [6507, 8623, 6879, '1327', '6971', 'd', 'A', 3663, 7831], [1711, 4751, 3479, '1327', '6971', 'd', 'u', 1771]

SOLUTION: 1327, 6971, d

PROBLEM: [6971, 'd', 'J', 'p', 'F', 5463, 'F', 'P', 1897, 'J', 'O', 'j', 'H', 'y', '3659', '9455', 'P', '9829', 'm', 'Q', 7829, 'C', 5311], ['E', 'R', 'H', 217, 'J', 'O', 'j', 'H', 'y', '3659', '9455', 'P', '9829', 'm', 'T', 5849, 1449]

SOLUTION: J, O, j, H, y, 3659, 9455, P, 9829, m

PROBLEM: [7377, 1987, 'N', 'p', 't', '2929', '9983', '7321', '9193', 'B', 'V', '1733', 'o', 'T', 8071, 9433, 'n', 'U'], ['q', 'g', 5683, 6497, 'q', 7587, 'u', 8819, 'T', 'c', 'N', 'p', 't', '2929', '9983', '7321', '9193', 'B', 'V', '1733', 'Q', 7419, 'W', 'p', 2765, 5831]

SOLUTION:
N, p, t, 2929, 9983, 7321, 9193, B, V, 1733