And so ultimately, even though we do form oxalo acetate at the end, we use up one oxalo acetate at the beginning, and the net result is zero. So what that means is we cannot use acetylco enzyme A to help us form glucose in our liver. Now, let's focus on all these different amino acids. 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.