\documentstyle[epic,eepic]{article}
\def\wra/{{\tt ra}}
\def\wrlw/{\wra/}
\def\wrn/{{\tt rn}}
\def\wrb/{{\tt rb}}
\def\wrc/{{\tt rc}}
\def\wrnn/{{\tt rnn}}
\def\wrnb/{{\tt rnb}}
\def\wrnc/{{\tt rnc}}
\def\wrbn/{{\tt rbn}}
\def\wrbb/{{\tt rbb}}
\def\wrbc/{{\tt rbc}}
\def\wrcn/{{\tt rcn}}
\def\wrcb/{{\tt rcb}}
\def\wrcc/{{\tt rcc}}
\def\wwn/{{\tt wn}}
\def\wwb/{{\tt wb}}
\def\wwc/{{\tt wc}}
\def\wwnn/{{\tt wnn}}
\def\wwnb/{{\tt wnb}}
\def\wwnc/{{\tt wnc}}
\def\wwbn/{{\tt wbn}}
\def\wwbb/{{\tt wbb}}
\def\wwbc/{{\tt wbc}}
\def\wwcn/{{\tt wcn}}
\def\wwcb/{{\tt wcb}}
\def\wwcc/{{\tt wcc}}
\def\wxn/{$x${\tt n}}
\def\wxb/{$x${\tt b}}
\def\wxc/{$x${\tt c}}
\def\wxnn/{$x${\tt nn}}
\def\wxnb/{$x${\tt nb}}
\def\wxnc/{$x${\tt nc}}
\def\wxbn/{$x${\tt bn}}
\def\wxbb/{$x${\tt bb}}
\def\wxbc/{$x${\tt bc}}
\def\wxcn/{$x${\tt cn}}
\def\wxcb/{$x${\tt cb}}
\def\wxcc/{$x${\tt cc}}

\pagestyle{empty}
\begin{document}
\begin{center}
\input {plot.tex}
\end{center}
\end{document}
