\psset{nodesep=1mm,levelsep=1.5cm,treesep=5mm}
\pstree[treemode=D]{\TC}{%
        \pstree{\TR{$P$} \tlput{\tiny 0.2}}{% 
            \pstree{\TR{$P$} \tlput{\tiny 0.2}}{%
				\pstree{\TR{$P$} \tlput{\tiny 0.2}}{%
						\TR{$P$} \tlput{\tiny 0.2}
						\Tdia{$\bar{P}$} \trput{\tiny 0.8}
				}
				\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{%
						\Tdia{$P$} \tlput{\tiny 0.2}
						\Tcircle{$\bar{P}$} \trput{\tiny 0.8}
				}
            }
			\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{%
				\pstree{\TR{$P$} \tlput{\tiny 0.2}}{%
						\Tdia{$P$} \tlput{\tiny 0.2}
						\Tcircle{$\bar{P}$} \trput{\tiny 0.8}
				}
				\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{%
						\Tcircle{$P$} \tlput{\tiny 0.2}
						\TR{$\bar{P}$} \trput{\tiny 0.8}
				}
            }
	}
		\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{% 
            \pstree{\TR{$P$} \tlput{\tiny 0.2}}{%
				\pstree{\TR{$P$} \tlput{\tiny 0.2}}{%
						\Tdia{$P$} \tlput{\tiny 0.2}
						\Tcircle{$\bar{P}$} \trput{\tiny 0.8}
				}
				\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{%
						\Tcircle{$P$} \tlput{\tiny 0.2}
						\TR{$\bar{P}$} \trput{\tiny 0.8}
				}
            }
			\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{%
				\pstree{\TR{$P$} \tlput{\tiny 0.2}}{%
						\Tcircle{$P$} \tlput{\tiny 0.2}
						\TR{$\bar{P}$} \trput{\tiny 0.8}
				}
				\pstree{\TR{$\bar{P}$} \trput{\tiny 0.8}}{%
						\TR{$P$} \tlput{\tiny 0.2}
						\TR{$\bar{P}$} \trput{\tiny 0.8}
				}
            }
	}
}