\psset{nodesep=3mm,levelsep=3cm,treesep=2mm}
\pstree[treemode=D]{\TC}{%
        \pstree{\TR{$R$} \tlput{$R$}}{% 
            \pstree{\TR{$RD$} \tlput{$D$}}{%
                \Tcircle{$RDA$} \tlput{$A$}
                \Tcircle{\blue$RDD$} \tlput{$D$}
                \Tcircle{\red$RDV$} \trput{$V$}
            }
            \pstree{\TR{$RV$} \trput{$V$}}{%
                \TR{$RVA$} \tlput{$A$}
                \Tcircle{$RVD$} \tlput{$D$}
                \TR{\blue$RVV$} \trput{$V$}
            }
         }  
        \pstree{\TR{$D$} \tlput{$D$}}
         {  
            \pstree{\TR{$DR$} \tlput{$R$}}
            {
                \Tcircle{$DRA$} \tlput{$A$}
                \Tcircle{\blue$DRD$} \tlput{$D$}
                \Tcircle{$DRV$} \trput{$V$}
            }
            \pstree{\TR{$DV$} \trput{$V$}}
            {
                \Tcircle{$DVA$} \tlput{$A$}
                \Tcircle{\blue$DVD$} \tlput{$D$}
                \Tcircle{\blue$DVV$} \trput{$V$}
            }
         }  

        \pstree{\TR{$V$} \tlput{$V$}}
         {  
            \pstree{\TR{$VD$} \tlput{$D$}}
            {
                \Tcircle{$VDA$} \tlput{$A$}
                \Tcircle{\blue$VDD$} \tlput{$D$}
                \Tcircle{\blue$VDV$} \trput{$V$}
            }
            \pstree{\TR{$VR$} \trput{$R$}}
            {
                \TR{$VRA$} \tlput{$A$}
                \Tcircle{$VRD$} \tlput{$D$}
                \TR{\blue$VRV$} \trput{$V$}
            }
         }  
     }