So in step two, the six carbon molecule becomes a five carbon molecule. In the process, we release a CO2 and we also generate, we release, we abstract two electrons from the carbon six molecule. And those two electrons are picked up by the NAD plus molecule to form NADH. In the next step, we have the five carbon component that again undergoes an oxidation reduction reaction in which we generate a CO2 molecule and an NADH molecule. So again, two electrons are abstracted and collected by the NAD plus molecule to form these two molecules. And we form the four carbon intermediate C four.