TASK DEFINITION: In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
PROBLEM: [6183, 4797, '4489', 'H', '1839', 'C', '5943', 'D', '2243', 'v', 'R', '2369', '653', 'Z', '4951', 'o', '5709', 'E', '6715', 'E', 'O', 'd', '9889', 'I', 'L', 'f', 2015], ['U', 'Z', 'q', 583, 'T', 'L', 5311, 'L', 't', 'A', 'W', 6061, 9623, 'x', '4489', 'H', '1839', 'C', '5943', 'D', '2243', 'v', 'R', '2369', '653', 'Z', '4951', 'o', '5709', 'E', '6715', 'E', 'O', 'd', '9889', 'I', 'q', 'X', 9877, 8877, 'R', 5899]

SOLUTION: 4489, H, 1839, C, 5943, D, 2243, v, R, 2369, 653, Z, 4951, o, 5709, E, 6715, E, O, d, 9889, I

PROBLEM: ['o', 833, 'H', 'I', 'x', 'u', 'a', 'L', 'H', 'g', '4519', 'J', 'E'], [9993, 'z', 'g', 'u', 'a', 'L', 'H', 'g', '4519', 'V', 9115]

SOLUTION: u, a, L, H, g, 4519

PROBLEM: ['U', 't', 'C', '9659', '1421', '7821', '4271', 'K', '8197', 'v', 'k', 9969], [1583, 5493, 7423, 1445, 'B', 8161, 'C', '9659', '1421', '7821', '4271', 'K', '8197', 'd', 'v', 4099, 5905, 4147, 6651]

SOLUTION:
C, 9659, 1421, 7821, 4271, K, 8197