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

[6507, 8623, 6879, '1327', '6971', 'd', 'A', 3663, 7831], [1711, 4751, 3479, '1327', '6971', 'd', 'u', 1771]
1327, 6971, d

['z', 'j', 'G', 'w', 'h', 5009, 'z', 'r', '1279', 'z', '1337', 'R', 'R', 9761, 'D', 713], ['a', 'T', 'A', 'z', 'r', '1279', 'z', '1337', 'R', 'J', 'z', 'L', 'P']
z, r, 1279, z, 1337, R

['B', 'd', 4681, 3865, 6697, 'z', 'y', 'F', 'b', 'C', '5083', '8953', 't', 'p', 'O', 9145, 9929, 2947, 'S', 6823, 9807], ['w', 'c', 1733, 'y', 'F', 'b', 'C', '5083', '8953', 't', 'p', 'M', 9183, 5901, 'I', 'T', 'A', 'E']

y, F, b, C, 5083, 8953, t, p

