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. So if the order, for example, A plus B plus C, so if this is A, fragment A and B and C, do we actually order them in this way? Or is it, for example, A, C and B? So once we determine the specific sequence of amino acids in that in each segment, we still need to actually determine what the order of those segments is with respect to one another.