%------------------------------------
%arbres
\def\echarbre{0.40mm}
\def\originy{1.5}
\def\tol{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,5)(-4,-3)
\put(0,0){\circle*{3}}
\end{picture} 
}
\def\tooll{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,12)(-4,\originy)
\put(0,0){\circle*{3}}
\put(0,10){\circle*{3}}
\put(0,0){\line(0,1){10}}
\end{picture} 
}
\def\tooolll{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,16)(-4,\originy)
\put(0,0){\circle*{3}}
\put(0,7){\circle*{3}}
\put(0,14){\circle*{3}}
\put(0,0){\line(0,1){7}}
\put(0,14){\line(0,-1){7}}
\end{picture} 
}
\def\tooolllb{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,22)(-4,\originy)
\put(0,0){\circle*{3}}
\put(0,10){\circle*{3}}
\put(0,20){\circle*{3}}
\put(0,0){\line(0,1){10}}
\put(0,20){\line(0,-1){10}}
\end{picture} 
}
\def\toololl{
\setlength{\unitlength}{\echarbre}
\begin{picture}(18,12)(-9,\originy)
\put(0,0){\line(-1,2){5}}
\put(5,10){\line(-1,-2){5}}
\put(0,0){\circle*{3}}
\put(5,10){\circle*{3}}
\put(-5,10){\circle*{3}}
\end{picture} 
}
\def\tooololll{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,22)(-4,\originy)
\put(0,0){\line(0,1){10}}
\put(0,10){\line(-1,2){5}}
\put(5,20){\line(-1,-2){5}}
\put(0,10){\circle*{3}}
\put(0,0){\circle*{3}}
\put(5,20){\circle*{3}}
\put(-5,20){\circle*{3}}
\end{picture} 
}
\def\tooloolll{
\setlength{\unitlength}{\echarbre}
\begin{picture}(18,22)(-9,\originy)
\put(0,0){\line(1,2){5}}
\put(0,0){\line(-1,2){5}}
\put(5,20){\line(0,-1){10}}
\put(0,0){\circle*{3}}
\put(5,10){\circle*{3}}
\put(5,20){\circle*{3}}
\put(-5,10){\circle*{3}}
\end{picture} 
}
\def\tooolloll{
\setlength{\unitlength}{\echarbre}
\begin{picture}(18,22)(-9,\originy)
\put(0,0){\line(1,2){5}}
\put(0,0){\line(-1,2){5}}
\put(-5,20){\line(0,-1){10}}
\put(0,0){\circle*{3}}
\put(5,10){\circle*{3}}
\put(-5,20){\circle*{3}}
\put(-5,10){\circle*{3}}
\end{picture} 
}
\def\toolololl{
\setlength{\unitlength}{\echarbre}
\begin{picture}(18,12)(-9,\originy)
\put(0,0){\circle*{3}}
\put(5,10){\circle*{3}}
\put(0,10){\circle*{3}}
\put(-5,10){\circle*{3}}
\put(0,0){\line(0,2){10}}
\put(0,0){\line(-1,2){5}}
\put(0,0){\line(1,2){5}}
\end{picture} 
}
\def\toooollll{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,23)(-4,\originy)
\put(0,0){\circle*{3}}
\put(0,7){\circle*{3}}
\put(0,14){\circle*{3}}
\put(0,21){\circle*{3}}
\put(0,21){\line(0,-1){21}}
\end{picture} 
}
\def\toooollllb{
\setlength{\unitlength}{\echarbre}
\begin{picture}(8,32)(-4,\originy)
\put(0,0){\circle*{3}}
\put(0,10){\circle*{3}}
\put(0,20){\circle*{3}}
\put(0,30){\circle*{3}}
\put(0,30){\line(0,-1){30}}
\end{picture} 
}