\begin{example}
Let $G$ be the 2nd group of the 3-dim cryst.groups in GAP's library.
\begin{enumerate}
\item  R\"oder's method may produce a fundamental region in a complicated shape.
\begin{columns}
\begin{column}{0.5\textwidth}
\includegraphics[scale=0.1]{Figures/aquater.jpg}
\end{column}
\begin{column}{0.47\textwidth}
\includegraphics[scale=0.1]{Figures/consecutive.jpg}
\end{column}
\end{columns} \p
\item Our method found one cubical fundamental region
\end{enumerate}
\begin{mdframed}
\begin{verbatim}

gap> G:=SpaceGroup(3,2);;
gap> B:=CrystGFullBasis(G);
[[[1,0,0],[0,1,0],[0,0,1/2]],[1/2,1/2,1/4]]
\end{verbatim}
\end{mdframed}
\end{example}