So this is the five prime N, and we can basically carry this same process out with all of these. This is four prime and this is five prime. The same thing here, one prime, two prime, three prime, four prime and five prime. There should be two H's, not one H right over here. And this should have an H, and this should have an H. Okay, so this here is the five prime N, and this here is the three prime N. And notice, just like in proteins in nucleic acids, we also have polarity. So the five N is polar because we have this negative two charge as a result of the phosphate.