(am2,2am)\left(\frac{a}{m^{2}}, \frac{2 a}{m}\right)(m2a,m2a)
(am2,m2a)\left(\frac{a}{m^{2}}, \frac{m}{2 a}\right)(m2a,2am)
(2am,am2)\left(\frac{2 a}{m}, \frac{a}{m^{2}}\right)(m2a,m2a)
(m2a,2am)\left(\frac{m^{2}}{a}, \frac{2 a}{m}\right)(am2,m2a)