\documentclass {article}
\input{dessin.tex}

\begin{document}

\begin{picture}(71,75)(0,-75)
\node[Nframe=n,NLangle=0.0](n1)(30.0,-28.0){${\langle K \rangle}$ }
\node[Nframe=n,NLangle=0.0](n2)(70.0,-48.0){${\langle L \rangle}$ }
\node[Nframe=n,NLangle=0.0](n3)(90.0,-44.0){${\langle M \rangle}$ }
\node[Nframe=n,NLangle=0.0](n4)(80.0,-24.0){${\langle N \rangle}$ }
\node[NLangle=0.0,Nw=5,Nh=12,Nmr=3](n5)(20.0,-40.0){${\langle O \rangle}$ }
\node[Nframe=n,NLangle=0.0](n6)(50.0,-30.0){ \color{blue} $A$}
\node[NLangle=0.0,Nw=25,Nh=12,Nmr=3](n13)(-10.0,-25.0){\color{red} $A$}
\node[NLangle=0.0,Nw=25,Nh=12,Nmr=3](n10)(40.0,-12.0){\color{red} $A$}
\node[NLangle=0.0,Nw=25,Nh=12,Nmr=3](n12)(95.0,-28.0){\color{red} $A$}

\drawedge[AHnb=0,AHdist=2,AHangle=13,AHLength=16,AHlength=16,curvedepth=3.5](n10,n1){ }


\drawedge[AHnb=0,AHdist=2,AHangle=13,AHLength=16,AHlength=16,curvedepth=0.0](n12,n2){ }


\drawedge[AHnb=0,AHlength=16,curvedepth=0.0](n13,n5){ }

\end{picture}


\end{document}
