In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['Q', 2743, 7239, 'u', 'Z', 3369, 'b', 6221, 7975, 'l', 'P', '9699', 'E', 'I', '2791', '5919', 'm', 'T', 'w', 'b', 6079, 3773, 'X', 6709, 4851], [7405, 1617, 's', 'U', 'H', 'R', 'u', 'q', 3671, 'X', 'l', 'P', '9699', 'E', 'I', '2791', '5919', 'm', 'T', 'w', 'v', 5447, 'L', 833, 1881, 'i', 'V', 87, 9433]