So, for example, when we fill this oxygen, what happens is the error going this way becomes ever so slightly longer. And what that means is the equilibrium shifts slightly towards this side, towards the r state. But in this particular case, our structure will still be predominantly in the t state. Now, if we add one more oxygen so that two of these heaton groups are filled, what we see happen is the arrow becomes longer going this way. And now these two arrows are equal in size. And what that means is both of these states will exist in the same proportion.