In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

Ex Input:
['P', 'h', 9391, 'u', 9757, 'y', 'a', 'j', 'k', 'Y', '2091', 'U', 'p', 7959, 'F'], [1713, 2679, 'y', 'a', 'j', 'k', 'Y', '2091', 'U', 'V', 'r', 't', 'f', 8179]

Ex Output:
y, a, j, k, Y, 2091, U

Ex Input:
[5401, 'j', 'y', 'I', 'X', 'o', 'P', 'F', 'Z', 'N', '3703', 'V', 'b', 'I', '6417', 'c', '5287', 'K', '9693', 'r', 'Z', 'F', 2683, 8021, 'c', 8229, 1989, 'm', 'r', 'O', 393, 2007, 9669, 'g', 8273], [6117, 7069, 'N', 'b', 7691, 3999, 8865, 1449, 'J', 'H', 'n', 'S', 7143, 6141, 2137, 'I', 'X', 'o', 'P', 'F', 'Z', 'N', '3703', 'V', 'b', 'I', '6417', 'c', '5287', 'K', '9693', 'h', 4013, 9577, 3799]

Ex Output:
I, X, o, P, F, Z, N, 3703, V, b, I, 6417, c, 5287, K, 9693

Ex Input:
[799, 'D', 'T', 'd', 'c', '4713', '5959', 'r', 'B', 7545], [5857, 'm', 'd', 'c', '4713', '5959', 's', 'm']

Ex Output:
d, c, 4713, 5959