In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[9951, 283, 5603, 'i', 'A', 'n', 'i', 'j', 'T', 7245, 'C', '1937', '8555', 'h', 'U', '2453', 'R', 'i', '6195', 'w', '241', '1237', 'D', 'm', 'g', 'j', '2835', 'A', '7577', '8533', '4005', 'Z', '1573', '3857', 'V', 'a', 'k', 8881, 9315, 5077, 'Q', 'V', 7365, 715, 943], ['H', 'F', 'H', 'f', 6441, 'T', '1937', '8555', 'h', 'U', '2453', 'R', 'i', '6195', 'w', '241', '1237', 'D', 'm', 'g', 'j', '2835', 'A', '7577', '8533', '4005', 'Z', '1573', '3857', 'V', 'a', 'B', 'o', 'L', 6607, 'I', 'W', 9119, 6973, 'P', 'l', 1735, 9673, 4953, 'G', 4003]