And so in step five, we build a polyceed DNA primer. We add it into our mixture and at the right temperature, these two will anneal. They will hybridize. Now, one important point that I did not mention in this part is this last t here contains an open hydroxyl group. And that open hydroxyl group is needed to actually synthesize the phosphodiasta bonds. And so now that we have this hydroxyl group, that transcriptase in this case can begin to synthesize those nucleotides and for the same exact reason.