So what we basically want to do is so assuming that we actually use the Edmund degradation process on each one of these fragments, so we know exactly what the sequence is. Now, what we want to do is we want to piece these fragments together. We want to find what the correct order is of these fragments by using these overlapping regions. Now, what do I mean by overlapping regions? Well, notice I have Valine and then I have Arginine. And the only time I have valine and Arginine in this section is right over here.