N <br /> 0 <br /> O <br /> O <br /> 0 <br /> 0 <br /> O <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> a <br /> si <br /> O <br /> O <br /> U <br /> 0 <br /> 0 0 <br /> U <br /> M <br /> a <br /> O <br />