\documentclass[a4paper]{article}

\setlength{\unitlength}{1mm}

\def\passbox{
\renewcommand{\arraystretch}{2.20}
\begin{tabular}{c|c|c|c|c|c}
    a - $$ & b - $$ & c - $$ & d - $$ & e - $$ & f - $$ \\ \hline
    g - $$ & h - $$ & i - $$ & j - $$ & k - $$ & l - $$ \\ \hline
    m - $$ & n - $$ & o - $$ & p - $$ & q - $$ & r - $$ \\ \hline
    s - $$ & t - $$ & u - $$ & v - $$ & w - $$ & x - $$ \\ \hline
           &         & y - $$ & z - $$ &         &      \\
    \end{tabular}
}

\usepackage[hmargin=0mm,vmargin=0mm,left=-7mm,right=0mm,top=4mm,bottom=0mm,paperheight=53.98mm,paperwidth=83.60mm]{geometry}

\pagestyle{empty}

\begin{document}

\passbox

\end{document}