\documentclass{jarticle}
\usepackage{array}

\begin{document}

\setlength{\arrayrulewidth}{3pt}
\setlength{\extrarowheight}{4pt}
\begin{tabular}{*{2}{p{35mm}}}
\begin{tabular}{c|c|c|}
\cline{2-3}
F1 & A & C \\\cline{3-3}
F2 & A & D \\\cline{2-2}
F3 & B & D \\\cline{2-3}
\end{tabular}
&\begin{tabular}{
  c<{\hspace{\arraycolsep}}
  @{\vline\hspace{-\arrayrulewidth}}
  >{\hspace{\arraycolsep}\hspace{\arrayrulewidth}}c|c|
  } 
\cline{2-3}
F1 & A & C \\\cline{3-3}
F2 & A & D \\\cline{2-2}
F3 & B & D \\\cline{2-3}
\end{tabular}
\end{tabular}

\end{document} 
