\documentclass[a4paper]{article}
\usepackage{polski}
\usepackage[utf8]{inputenc}
\begin{document}

\setlength{\tabcolsep}{3mm}
\newcommand{\textB}{\fbox{ay br cu dh eq}}
.\begin{tabular}%%
{@{\extracolsep{4mm}}l|l|@{\hspace{5mm}}l@{\extracolsep{0mm}}l|}\hline
\textB&\textB&\textB&\textB\\ \hline \end{tabular}.
\par %% druga tabela:
.\begin{tabular}{l|@{\extracolsep{0mm}}l|l@{\extracolsep{0mm}}l|}\hline
\textB&\textB&\textB&\textB\\ \hline \end{tabular}.

\end{document}