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\Huge}\vrule width1sp}}}
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Rules of Inference}\vrule width1sp}}}
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Theorem 1}\vrule width1sp}}}
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Theorem 2}\vrule width1sp}}}
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Theorem 3}\vrule width1sp}}}
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Theorem 4}\vrule width1sp}}}
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{\bf\dots}}\vrule width1sp}}}
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Computing Machine}\vrule width1sp}}}
\end{document}