\documentclass{report}
\usepackage{multibox}

\newcommand{\ovr}[1]{\ensuremath{\overline\mathrm{#1}}}
\begin{document}

\unitlength5mm\centering
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 \begin{tiny}
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    {6}{5}{4}{3}{2}{1}
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    {11}{12}{13}{14}{15}{16}
 \end{tiny}
 \multimake(3.6,0)(0,1){8}(0,1)[r]{$\perp$}
   {\ovr{Y_7}}{G}{\ovr{G}}{\ovr{LE}}{A$_2$}
   {A$_1$}{A$_0$}
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   {\ovr{Y_5}}{\ovr{Y_4}}{\ovr{Y_3}}
   {\ovr{Y_2}}{\ovr{Y_1}}{\ovr{Y_0}}{$\oplus$}
\end{picture}

\end{document}