% buffer EAST
\newsavebox{\ote}
\savebox{\ote}(9,6){
\begin{picture}(9,6)
\put(0,3){\line(1,0){2}}     % input
\put(2,0){\line(0,1){6}}
\put(2,6){\line(5,-3){5}}
\put(7,3){\line(-5,-3){5}}
\put(7,3){\line(1,0){2}}      % output
\end{picture}
}