% ===== Save Boxes must be loaded before using =========================
% ======================================================================
\setlength{\unitlength}{1truemm}
\newsavebox{\loopcirc}
\savebox{\loopcirc}(10,20)[r]{
  \begin{picture}(10,20)(0,0)
    \put(0,0){\thicklines{\circle{10}}}
    \put(0,-10){\thicklines{\line(1,0){7}}}
    \put(7,-7){\thicklines{\oval(6,6)[br]}}
    \put(10,-7){\thicklines{\line(0,1){14}}}
    \put(7,7){\thicklines{\oval(6,6)[tr]}}
    \put(7,10){\thicklines{\line(-1,0){4}}}
    \put(3,7){\thicklines{\oval(6,6)[tl]}}
  \end{picture}}
