a = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89];
b = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];

a=set(a);
b=set(b);

new = [x for x in a if x in a and x in b];
print(new);