So we have the MH bond of amino acid number one interacts with the co bond of amino acid two on the opposing strand. And the co bond of this amino acid number one interacts with the NH, a group of a different amino acid on that opposing strand. We call that amino acid three. So in the parallel beta sheet, the adjacent strands run in the same direction, and an amino acid on one strand connects to two amino acids on the opposing strand via the hydrogen bond. So we see that not only do we have these opposing directions, but because in this case, we have the opposing directions, they line up perfectly. But in this case, because they run in the same direction, they don't line up perfectly.