%% 
%%  Der Mathematiksatz mit LaTeX, 1. Auflage 2009
%% 
%%  Example 7-5-13 on page 145.
%% 
%%  Copyright (C) 2009 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.
%% 

\documentclass[]{ttctminimal}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{355.65944pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\StartShownPreambleCommands
\usepackage{array,mathabx}
\def\mathSymbol#1#2{ $ \csname#1\endcsname{#2} $ & \Lcs{#1}\{#2\} &}
\StopShownPreambleCommands
\begin{document}
\renewcommand\arraystretch{1.7}
\begin{tabular}{@{}*{3}{c@{\kern3pt}l}c@{\kern3pt}l@{}l@{}}
\mathSymbol{overbrace}{abc} \mathSymbol{widebar}{abc}   \mathSymbol{overgroup}{abc} \\
\mathSymbol{widecheck}{abc} \mathSymbol{underbrace}{abc}\mathSymbol{wideparen}{abc}\\
\mathSymbol{undergroup}{abc}\mathSymbol{widering}{abc}  \mathSymbol{widearrow}{abc}
\end{tabular}
\end{document}