So we cut this region between the ga and this region also between our ga. Now, another way of saying that our mechanism of action is along a palindromic sequence is to basically say that the way we cut our double stream DNA molecule is to form a molecule that is characterized by a two fold rotational symmetry. So this should be rotational symmetry. So one interesting property of the majority of the cleavages that take place is that they are characterized by two fold rotational symmetry. Now, to see what we mean by two fold rotational symmetry, let's take a look at the following diagram. So, let's suppose we take just this blue sequence. So we have Gaaptc and then we have Cttaag.