And so what we can actually do is if the polypeptide isn't too long as it is in this case, so if it's about 50 amino acids or less, we can actually continue that Edmund degradation process. We can repeat it over and over and over until we get every one of these amino acids. So if we take this five amino acid polypeptide and we repeat the Edmund degradation process again, then we'll be able to remove this amino acid here, which is arginine. So we know that this is Alanine, and then we repeat it a second time. And now we know it is Arginine. And after we repeat a second time, we're going to get this peptide that contains four amino acids, and we continue it over and over until we get all those amino acids.