(13,−23)\left(\frac{1}{3},-\frac{2}{3}\right)(31,−32)
(16,13)\left(\frac{1}{6}, \frac{1}{3}\right)(61,31)
(−16,13)\left(-\frac{1}{6}, \frac{1}{3}\right)(−61,31)
(16,−13)\left(\frac{1}{6},-\frac{1}{3}\right)(61,−31)