±(2−i)\pm(2-i)±(2−i)
±(1−i)\pm(1-i)±(1−i)
±(1+i)\pm(1+i)±(1+i)
±(1−2i)\pm(1-2 \mathrm{i})±(1−2i)
±(2+i)h\pm(2+i)^{h}±(2+i)h