\begin{figure}[t!]
    \centering
    \subfigure{
        \centering
        \includegraphics[trim={0 0 0 0},clip,width=0.48\linewidth]{figure/appendix/recon/doorkey_c4_1.png}
    }
    \hfill
    \subfigure{
        \centering
        \includegraphics[trim={0 0 0 0},clip,width=0.48\linewidth]{figure/appendix/recon/doorkey_c4_2.png}
    }
    \centering
    \subfigure{
        \centering
        \includegraphics[trim={0 0 0 4.4cm},clip,width=0.48\linewidth]{figure/appendix/recon/sokoban_c3_1.png}
    }
    \hfill
    \subfigure{
        \centering
        \includegraphics[trim={0 0 0 4.4cm},clip,width=0.48\linewidth]{figure/appendix/recon/sokoban_c3_2.png}
    }
    \caption{{Additional examples of the observation reconstructions.}}
    \label{fig:appendix_recon}
\end{figure}
