In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[3055, 'u', 'c', 'R', 'd', 's', 'y', 'H', '1685', '105', '645', '5959', 'X', '1189', '7', '8867', '5945', '8501', '1543', 'I', 'x', '7761', '4145', 'm', '521', 'r', 1317, 'B', 5015, 8565], ['j', 3559, 5521, 'x', 'Q', 6869, 4639, 'f', 't', 'c', 'R', 'd', 's', 'y', 'H', '1685', '105', '645', '5959', 'X', '1189', '7', '8867', '5945', '8501', '1543', 'I', 'x', '7761', '4145', 'm', '521', 'L', 'M', 1213, 't', 'r', 8951, 7245, 6695, 'T']