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% {\quad \hrulefill \quad {\bf SPOOLES 2.2} : \today \quad \hrulefill}
% {\quad \hrulefill \quad {\bf SPOOLES 2.2} : \quad \today \hrulefill}
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{\hspace*{0.5 in} Orderings and Front Trees \quad\hrulefill\quad\today}
{\today \quad\hrulefill\quad Orderings and Front Trees \hspace*{0.5 in}}

\begin{document}

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\end{document}
