In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['F', 1839, 'u', '4413', '4657', 'j', 'J', '1593', 'R', '8621', '6865', '4941', '9201', '8651', '6799', '7709', 'T', '2113', '8813', 'v', 'P', 3557, 'S', 859, 3075, 'a'], ['V', 6389, 'Q', 'D', 'U', 'z', 6345, 'b', 9325, 'a', 'F', 'p', 'u', '4413', '4657', 'j', 'J', '1593', 'R', '8621', '6865', '4941', '9201', '8651', '6799', '7709', 'T', '2113', '8813', 'M', 'K', 6265, 'K', 3973, 'b', 3721, 'E', 2989, 'P', 'g', 6879]