\documentclass[11pt,titlepage]{article}
\usepackage[latin2]{inputenc}
\usepackage{czech}
\usepackage{a4wide}

\begin{document}
\begin{tabular}{|*{3}{l|}}
  bu�ka 1 &                      bu�ka 2  & bu�ka 3 \\ 
  bu�ka 1 & \multicolumn{1}{ l }{bu�ka 2} & bu�ka 3 \\
  bu�ka 1 & \multicolumn{1}{|l }{bu�ka 2} & bu�ka 3 \\ 
  bu�ka 1 & \multicolumn{1}{ l|}{bu�ka 2} & bu�ka 3 \\ 
  bu�ka 1 & \multicolumn{1}{|l|}{bu�ka 2} & bu�ka 3 \\ 
\end{tabular}
\end{document}