%% 
%%  A DANTE-Edition example
%% 
%%  Example 01-01-15 on page 10.
%% 
%%  Copyright (C) 2010 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{177.70511pt}
\setlength\parindent{0pt}



\begin{document}
\begin{tabular}{|ccc|}
 co1 l1 & co2 l1 & co3 l1\\
 \begin{tabular}{c}co1 l2\\co1 l3\end{tabular}
 & \begin{tabular}{|c|}\hline
    co2 l2/3\\\hline \end{tabular}
 & \begin{tabular}{c}co4 l2\\co4 l3\end{tabular}\\
  co1 l4 & co2 l4 & co3 l4
\end{tabular}
\end{document}