N <br /> 01 <br /> N <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> r <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> a <br /> 0 <br /> 0 <br /> 0 <br /> 0 <br /> 0 0 <br /> 0 <br /> c) <br /> 0 <br /> 0 <br /> O <br />