We get a different set of fragments and we again run admin degradation to find the sequence. And then we use the two sets of fragments to basically find what the correct order is of these fragments with respect to one another. And in that manner, we can basically find what the sequence is of amino acids in this polypeptide. And then we repeat that with the blue polypeptide. And at the end, we know exactly what the sequence of amino acid is in this protein that consists of these two polypeptide chains. Now, the final piece of information that we need to know is where exactly are these disulfide bonds?