$\displaystyle m= \frac{1}{6}$\displaystyle m= \frac{1}{6}

$\displaystyle m= -\frac{1}{6}$\displaystyle m= -\frac{1}{6}

$\displaystyle m= \frac{5}{6}$\displaystyle m= \frac{5}{6}

$\displaystyle m= -\frac{5}{6}$\displaystyle m= -\frac{5}{6}