The third time around, we use yet another ggntp. And the final fourth time, we use the final Dgntp. So let's suppose the second time around, instead of using the DG ATP, we used Ddgtp. And so instead of having the fragments where we stopped on the A's, we're going to have the fragments where we stop on the g's. And so, because we only have two CS, so this C doesn't count because it's part of the primer. So we have one C and we have a second C. So the complementary would have a g here and a g here.