Table \[Tb:Positions\] for $|a| 
= 1156$ and $1142h^{-1} \, Mpc$. In this table the first column for each coordinate corresponds to the first solution of Table \[Tb:Positions\], and the second column for the second solution.

Now we deal with models within class ${\mathcal{G}_6}$. For the first configuration one obtains from eqs. (\[EqFirstG6\]) $$(2x + |a|)^2 + (2y + |b|)^2 = d_1^2 + d_2^2 - 2d_1d_2\cos\theta 
- |c|^2 \; ,$$ which implies that $$|c|^2 \leq d_1^2 + d_2^2 - 2d_1d_2\cos\theta \; .$$ Furthermore, from the first and third equations in (\[EqFirstG6\]) one also has $$|a| \leq d_1 \qquad\mbox{and}\qquad |b| \leq d_2 \; .$$ A family of simple examples are obtained by taking $|a| = d_1$. In fact, in this case one has $$y=z=0 \qquad , \qquad x = - \frac{1}{2} d_2\cos\theta \qquad , 
\qquad |b|^2 + |c|^2 = d_2^2\sin^2\theta \; .$$ Thus, taking $|b|=|c|$, one model of a universe with spatial sections of class ${\mathcal{G}_6}$ that fits the first configuration with the Roukema–Edge hypothesis is $$|a| = 1158h^{-1} \, Mpc \qquad\mbox{and}\qquad |b| = |c| = 
1140.4h^{-1} \, Mpc \; ,$$ with Coma located at $$x = - 29.9h^{-1} \, Mpc \qquad\mbox{and}\qquad y=z=0 \; .$$

On the other side, for the second 