@ -2,5 +2,5 @@
\begin{itemize}[itemsep=-0.9em, leftmargin=0.8em]
\item $S = \{s_1, s_2, s_3, s_4\}, $\\
\item $S_0 = \{s_2\}, $\\
\item $R = \{\{s_1, s_2\}, \{s_1, s_1\}, \{s_2, s_4\}, \{s_2, s_3\}, \{s_3, s_1\}, \{s_4, s_2\}, \{s_4, s_3\}\}, $
\item $R = \{(s_1, s_2), (s_1, s_1), (s_2, s_4), (s_2, s_3), (s_3, s_1), (s_4, s_2), (s_4, s_3)\}, $
\end{itemize}