\documentclass[11pt]{report}
\input{header}
\pagestyle{empty}
\begin{document}
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  %
  %
  \arrMainVertex(0,2){c1}
  %
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  \ncline[linestyle=dashed,dash=1pt 1pt,linecolor=blue]{5}{8}
  \ncline[linestyle=dashed,dash=1pt 1pt,linecolor=blue]{8}{9}\Aput[1pt]{$\pi_1$}
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  %
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  \ncline[linestyle=dashed,dash=1.5pt 1.5pt,linecolor=orange]{11}{15}\Aput[1pt]{$\pi_2$}
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  %
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}
\end{document}
