\usepackage {pstricks,pst-node,pst-tree}
\pstree[nodesep=2pt,
levelsep=20pt]{\TR{grandfather}}
{\pstree{\TR{uncle}}{\TR{cousin}}
\pstree{\TR{father}}
{\pstree{\TR{brother}}{\TR{nephew}}
\pstree{\TR{Me}}
{\pstree{\TR{son}}{\TR{grandson}}
}
}
}
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