% Created 2011-05-11 Wed 18:40
\documentclass[11pt]{article}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fixltx2e}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{float}
\usepackage{wrapfig}
\usepackage{soul}
\usepackage{textcomp}
\usepackage{marvosym}
\usepackage{wasysym}
\usepackage{latexsym}
\usepackage{amssymb}
\usepackage{hyperref}
\tolerance=1000
\providecommand{\alert}[1]{\textbf{#1}}

\title{---------------------------------------------------}
\author{}
\date{11 May 2011}

\begin{document}

\maketitle

\setcounter{tocdepth}{3}
\tableofcontents
\vspace*{1cm}





\begin{itemize}
\item Test 1a (works):
\end{itemize}

\begin{verbatim}
 str1\__str2
\end{verbatim}



\begin{itemize}
\item Test 1b (works):

\begin{verbatim}
str1\__str2
\end{verbatim}
\item Test 1c (does not work):
\end{itemize}

\verb+str1\hspace{3ex}str2+

\begin{itemize}
\item Test 1d (does not work):
\end{itemize}

str1\hspace{3ex}str2


\begin{itemize}
\item Test 1e (does not work):
\end{itemize}

\begin{verbatim}
str1\hspace{3ex}str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 2a (works):
\end{itemize}

\begin{verbatim}
 str1\\__str2
\end{verbatim}



\begin{itemize}
\item Test 2b (works):

\begin{verbatim}
str1\\__str2
\end{verbatim}
\item Test 2c (does not work):
\end{itemize}

\verb+str1\\hspace{3ex}str2+

\begin{itemize}
\item Test 2d (does not work):
\end{itemize}

str1\\hspace{3ex}str2


\begin{itemize}
\item Test 2e (does not work):
\end{itemize}

\begin{verbatim}
str1\\hspace{3ex}str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 3a (works):
\end{itemize}

\begin{verbatim}
 str1\_str2
\end{verbatim}



\begin{itemize}
\item Test 3b (works):

\begin{verbatim}
str1\_str2
\end{verbatim}
\item Test 3c (works):
\end{itemize}

\verb+str1\_str2+

\begin{itemize}
\item Test 3d (does not work):
\end{itemize}

str1\_str2


\begin{itemize}
\item Test 3e (works):
\end{itemize}

\begin{verbatim}
str1\_str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 4a (works):
\end{itemize}

\begin{verbatim}
 str1\\_str2
\end{verbatim}



\begin{itemize}
\item Test 4b (works):

\begin{verbatim}
str1\\_str2
\end{verbatim}
\item Test 4c (works):
\end{itemize}

\verb+str1\\_str2+

\begin{itemize}
\item Test 4d (does not work):
\end{itemize}

str1\\_str2


\begin{itemize}
\item Test 4e (works):
\end{itemize}

\begin{verbatim}
str1\\_str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 5a (works):
\end{itemize}

\begin{verbatim}
 str1\str2
\end{verbatim}



\begin{itemize}
\item Test 5b (works):

\begin{verbatim}
str1\str2
\end{verbatim}
\item Test 5c (works):
\end{itemize}

\verb+str1\str2+

\begin{itemize}
\item Test 5d (does not work):
\end{itemize}

str1\str2


\begin{itemize}
\item Test 5e (works):
\end{itemize}

\begin{verbatim}
str1\str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 6a (works):
\end{itemize}

\begin{verbatim}
 str1\\str2
\end{verbatim}



\begin{itemize}
\item Test 6b (works):

\begin{verbatim}
str1\\str2
\end{verbatim}
\item Test 6c (works):
\end{itemize}

\verb+str1\\str2+

\begin{itemize}
\item Test 6d (does not work):
\end{itemize}

str1\\str2


\begin{itemize}
\item Test 6e (works):
\end{itemize}

\begin{verbatim}
str1\\str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 7a (works):
\end{itemize}

\begin{verbatim}
 str1_str2
\end{verbatim}



\begin{itemize}
\item Test 7b (works):

\begin{verbatim}
str1_str2
\end{verbatim}
\item Test 7c (does not work):
\end{itemize}

\verb+str1\_{}str2+

\begin{itemize}
\item Test 7d (does not work):
\end{itemize}

str1_str2


\begin{itemize}
\item Test 7e (works):
\end{itemize}

\begin{verbatim}
str1_str2
\end{verbatim}

\hrule


\begin{itemize}
\item Test 8a (works):
\end{itemize}

\begin{verbatim}
 str1__str2
\end{verbatim}



\begin{itemize}
\item Test 8b (works):

\begin{verbatim}
str1__str2
\end{verbatim}
\item Test 8c (works):
\end{itemize}

\verb+str1__str2+

\begin{itemize}
\item Test 8d (does not work):
\end{itemize}

str1__str2


\begin{itemize}
\item Test 8e (works):
\end{itemize}

\begin{verbatim}
str1__str2
\end{verbatim}

\hrule

\end{document}
