\documentclass{article}
\usepackage{alltt}
\begin{document}

     Spacing
\begin{alltt}
Word
  Word
    Word
  Word
Word
\end{alltt}
     OK

Funny Characters
\begin{alltt}
a  b $ c & d # e ^ f _ g % h ~ i
\end{alltt}

With math?
\begin{alltt}
a+b \begin{math}a+b\end{math} a+b
\end{alltt}

Blank lines
\begin{alltt}
Word

  Word

    Word

  Word

Word
\end{alltt}

\end{document}