So basically, if we metabolize an amino acid, and the carbon skeleton of that amino acid is used to form any one of these intermediates here, or Pyruvate, these are known as glucogenic. So glucogenic amino acids are those amino acids that, when metabolized, help us form intermediates that ultimately lead to the production of glucose. So that includes all these, these and these. So, for example, let's take tryptophan. Tryptophan, if it follows a specific pathway, that will ultimately lead to the production of pyruvate. Now, Pyruvate basically goes this way via the pyruvate carboxylase enzyme that forms oxalo acetate, and that then helps to form glucose via glucomgenesis.