And so what that does is it allows us to isolate these three different fragments and then we can use the Edmund degradation process on each one of these fragments individually. And so for example, for fragment one, once we carry out Edmund degradation, we know that for example, this is amino acid 12345 and six. Now we carry the same process out with fragment B. We know this is fragment one, two, three and four in that order. And then for C we have 12345. Now what we don't know is what the order of these fragments is.