\documentclass[11pt]{article}
\usepackage{pstricks}
\usepackage{pstricks-add}
\pagestyle{empty}

\begin{document}

\begin{center}
\bgroup
\begin{pspicture}(2,5)
  \circlenode{A}{A}%
  \quad\circlenode{C}{C}%
  \quad\circlenode{E}{E}
  \quad\circlenode{G}{G}
  \quad\circlenode{I}{I}
  \rput(0,4){\circlenode{B}{B}}
  \rput(1,4.5){\circlenode{D}{D}}
  \rput(2,5){\circlenode{F}{F}}
  \rput(3,4.5){\circlenode{H}{H}}
  \rput(4,4){\circlenode{J}{J}}
  \psset{arrowscale=2,linearc=0.2,%
  linecolor=red,armA=0.5, angleA=90,angleB=-90}
  \ncdiag[lineAngle=20]{->}{A}{B}
  \ncput*[nrot=:U]{line I}
  \ncdiag[lineAngle=20]{->}{C}{D}
  \ncput*[nrot=:U]{line II}
  \ncdiag[lineAngle=20]{->}{E}{F}
  \ncput*[nrot=:U]{line III}
  \ncdiag[lineAngle=20]{->}{G}{H}
  \ncput*[nrot=:U]{line IV}
  \ncdiag[lineAngle=20]{->}{I}{J}
  \ncput*[nrot=:U]{line V}
\end{pspicture}
\egroup
\end{center}

\end{document}

