In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7265, 6393, 'M', '3515', 'H', '4575', '4025', '1703', 'L', 1657, 8807, 3955, 'L'], [8973, 'i', 2455, 'h', '3515', 'H', '4575', '4025', '1703', 'T', 7567]