\part{Part}
\chapter{Chapter\footnote{first}}
\section{Section\footnote{second}}
\subsection{Subsection\footnote{third}}
\subsubsection{Sub-sub-section\footnote{fourth}}
\part{Part}
\chapter{Chapter\footnote{first}}
\section{Section\footnote{second}}
\subsection{Subsection\footnote{third}}
\subsubsection{Sub-sub-section\footnote{fourth}}