±12(1+i)\pm \frac{1}{\sqrt{2}}(1+i)±21(1+i)
±12(1−i)\pm \frac{1}{\sqrt{2}}(1-i)±21(1−i)
±12(1−i)\pm \frac{1}{2}(1-\mathrm{i})±21(1−i)
±12(1+i)\pm \frac{1}{2}(1+\mathrm{i})±21(1+i)