Previously, we discussed the first two steps of stage three of the glycolytic pathway. So in this lecture, I'd like to finish our discussion on stage three. So we're going to discuss step three, step four and step five of stage three. And this is the same thing as saying step eight, nine and ten of the overall glycolytic pathway. So before we discuss step three, let's remember what happened in steps one and two of stage three of glycolysis. So in those two steps, two molecules of glyceroaldehyde, three phosphate are transformed into two molecules of three phosphoglycerate.