(2,2π3)\left(2, \frac{2 \pi}{3}\right)(2,32π)
(2,−π3)\left(2,-\frac{\pi}{3}\right)(2,−3π)
(2,π3)\left(2, \frac{\pi}{3}\right)(2,3π)
(4,2π3)\left(4, \frac{2 \pi}{3}\right)(4,32π)