In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[6959, 845, 7759, 8261, 'D', 3193, 'l', 'F', 'S', '6857', '7239', '4699', '9905', 'W', '2773', '7581', 'C', '7059', '6201', '1855', '283', '325', '5787', 'h', 4177, 'M', 9461, 'z', 'i', 1433, 'K', 'X', 2885, 575], ['t', 'z', 3443, 867, 7115, 'f', 7779, 'n', 6373, 1585, 'S', '6857', '7239', '4699', '9905', 'W', '2773', '7581', 'C', '7059', '6201', '1855', '283', '325', '5787', 'B', 'F', 5579, 'm', 1375, 'p', 5589, 'Z', 'c', 2125, 7163, 2283, 'h', 't']