\documentclass{article}
\begin{document}
\section{First Section}
\subsection{First Subsection}
\subsubsection{First Subsubsection}
\paragraph{First Paragraph}
\subparagraph{First SubParagraph}
\section{First Section}
\section{Second Section}
\subsection{First Subsection}
\subsection{Second Subsection}
\subsection{Third Subsection}
\end{document}
