%%
%% The LaTeX Companion, 3ed
%%
%% Example 11-5-5 on page II-182 in "Ellipsis and other kinds of \protect \ldots  ".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{135.0pt}

%StartShownPreambleCommands
 \usepackage{array,amsmath,mathdots}
%StopShownPreambleCommands

\begin{document}
 \begin{tabular}{l@{}>{\large$}c<{$}>{\scriptsize$}c<{$}
                 >{\tiny$}c<{$}}
   command    &   \multicolumn{1}{c}{large}
                  &   \multicolumn{1}{c}{script}
                     &   \multicolumn{1}{c}{tiny}   \\[3pt]
  \verb=\ddots=     & \ddots     & \ddots    & \ddots   \\
  \verb=\iddots=    & \iddots    & \iddots   & \iddots  \\
  \verb=\vdots=     & \vdots     & \vdots    & \vdots   \\
  \verb=\dddot{Z}=  & \dddot{Z}  & \dddot{Z} & \dddot{Z}\\
  \verb=\ddddot{Z}= & \ddddot{Z} & \ddddot{Z} & \ddddot{Z}
 \end{tabular}
\end{document}