So if this was normal, then it will continue. So the DNA polymerase would add the thymine, then the guanine, then the cytosine, then the thiamine. And now it comes to a T. So that means there is once again the possibility for an A. And the A can either come from this normal dATP or the abnormal Ddatp that lacks the hydroxyl. And if it's this group here, then once again we will stop the synthesis and this fragment will be produced. Now, if it wasn't that molecule, then we would add the next.