In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[4205, 901, 'x', 2661, 4789, 'L', 'K', 'L', 'w', 'V', 'M', '7595', 'Z', 'f', 'w', '8571', 'U', '9061', 'h', 'S', '9953', 'Y', 'G', '2377', '7139', '1887', '6477', 'b', '681', 'F', 'o', '8227', '3533', 'D', 4771, 3029, 'e', 4519, 343, 'M', 2679, 3761, 9203, 'D', 3437, 5083, 'k', 'D', 'l', 6195], ['b', 3891, '7595', 'Z', 'f', 'w', '8571', 'U', '9061', 'h', 'S', '9953', 'Y', 'G', '2377', '7139', '1887', '6477', 'b', '681', 'F', 'o', '8227', '3533', 'j', 7791, 667, 6037, 'X', 'D', 'c']