And we also generate the carbon dioxide, the orthophosphate, as well as the twelve H plus ions. And so in these particular cells they don't actually need the Ribos, they only need the NADPH molecules. And so this is what they actually follow. So we have this interplay, this coordinated interplay between the pencils phosphate pathway and the glycolytic pathway which allows the cell to actually maximize the production of these much needed NADPH molecules. And finally let's move on to case four, the final case. So in case four, our cells basically need not only the NADPH molecules but also ATP molecules, energy molecules.