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\section{An introduction}\label{sec:section1}
\section{Fasten your seatbelt}\label{sec:section2}
\section{Operating altitude reached}\label{sec:section3}
\section{It’s going downhill}\label{sec:section4}
\section{Just before impact}\label{sec:section5}
\section{Calm down}\label{sec:section6}

Reference be made to \cref{sec:section1,sec:section2,sec:section3,sec:section5}.

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