We have tyrosine, lysine and aspartate and Cerin. So we only have a single glycine amino acid in the entire sequence. Now, if we look at the second experiment, where does our glycine appear? So the glycine appears in the second fragment appear. So this glycine is the same glycine here because we're dealing with the same exact peptide. Now, in this case, we have glycine tryptophan, arginine.