So 50 50. Now, if we add one more oxygen, what we see happen is the equilibrium now shifts towards the arc state, and this arrow becomes longer than this arrow. And so now what we see happen is this is the structure, the state of the hemoglobin that will predominate. And finally, if we add one more oxygen, what happens is we shift our equilibrium almost entirely towards the r state. And now this state will exist exclusively as our r state. This hemoglobin molecule will exist exclusively in that r state.