<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass{ppex}
\nonstopmode
\usepackage [curve,frame]{xy}
\pagestyle{empty}
\setlength\textwidth{183.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage [curve,frame]{xy}
\[\begin{xy}
  0*[o]+{L};(50,20)*[o]+{R}="R"
        **\crv{} ?(.6)*@{+}*^+!UL{0}
   ,"R" **\crv{(30,30)} ?*@{+}*^+!DR{1}
   ,"R" **\crv{(20,30)&amp;(30,40)} ?*@{+}*^+!DR{2}
   ,"R" **\crv{(10,-20)&amp;(25,-20)&amp;(40,20)}
     ?(.4)*@{+}*^+!DR{3}
   ,"R" **\crv{(0,-10)&amp;(12,-20)&amp;(28,25)&amp;(40,20)}
     ?(.4)*@{+}*^+!DR{4}
 \end{xy}\]

\end{document}
</pre></body></html>