\begin{flushleft}
\hrulefill

\vspace*{-4mm}

\begin{alltt}
STk> (define ms (mset-int 1 2 2 3)){\em{
\#[undefined]} }
\end{alltt}
\begin{alltt}
STk> (define sq (sequence-int 1 2 2 3)){\em{
\#[undefined]} }
\end{alltt}
\begin{alltt}
STk> (null? ms){\em{
\#f} }
\end{alltt}
\begin{alltt}
STk> (null? sq){\em{
\#f} }
\end{alltt}
\begin{alltt}
STk> (eq? sq ms){\em{
\#f} }
\end{alltt}
\begin{alltt}
STk> (eqv? sq ms){\em{
\#t} }
\end{alltt}

\vspace*{-5mm}

\hrulefill
\end{flushleft}