So again, nicotine amide adenine dinucleotide and fad is flavin adenine dinucleotide. And so because this takes place twice, because we have two Pyruvate molecules entering the mitochondria, we produce two, four, six nadhs, two fadh twos and two GCP molecules. And we also form two and two. So four CO2 molecules. Now, notice that we said that the citric acid cycle actually used to generate the high energy electrons. Notice that the cycle doesn't actually itself generate any ATP molecules.