In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['t', 8433, 'c', 't', '3251', '9649', 'P', '9421', '8401', 'V', '7581', 'D', 't', '8925', '3237', 'p', '4133', '1451', 'p', '7459', '725', 'X', 'Y', '857', '9325', '65', '9621', 'I', 'y', '8113', 'K', 8961, 7029, 'e', 'v', 1297, 't', 'F', 8069, 3583, 'T'], ['L', 'C', 1709, 'c', 'M', 'b', 'A', 'J', 'M', 'N', 'm', '3251', '9649', 'P', '9421', '8401', 'V', '7581', 'D', 't', '8925', '3237', 'p', '4133', '1451', 'p', '7459', '725', 'X', 'Y', '857', '9325', '65', '9621', 'I', 'y', '8113', 'w', 'Z', 'N', 6845, 833, 'Q', 3949, 5249, 'M', 9585, 'R', 2789, 'm', 't', 3017, 'd', 2115, 'k', 'x', 'g', 6541, 'M', 8659]