\documentclass{ppex}
\nonstopmode
\usepackage [all,poly]{xy}
\pagestyle{empty}
\setlength\textwidth{183.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage [all,poly]{xy}
\[\begin{xy} /r10mm/:,
  {\xypolygon4"F"{\dir{*}}}
 ,+(.8,1.0),{\xypolygon4"B"{\dir{*}}}
 ,"F1";"B1"**@{-},"F2";"B2"**@{-}
 ,"F3";"B3"**@{-},"F4";"B4"**@{-}
 ,-(1.0,2.8)
 ,{\xypolygon10"O"{~={16}\dir{*}}}
 ,{\xypolygon5"I"{~:{(0.55,0):}
      ~={16}{\dir{*}}}}
 ,"O1";"I1"**@{.},"O3";"I2"**@{.}
 ,"O5";"I3"**@{.},"O7";"I4"**@{.}
 ,"O9";"I5"**@{.}
\end{xy}\]
\end{document}
