I have two subfigures that I want to align as such:

But what I got is this with the codes below:

\documentclass{book}
\usepackage{subcaption}
\usepackage{pdfpages}
\begin{document}
\begin{figure}[!htb]
\centering
\begin{tabular}[t]{cc}
\begin{tabular}[t]{c}
\begin{subfigure}[t]{0.4\textwidth}
\includegraphics[width=0.9\textwidth]{"fig/example/cat_tall"}
\caption{Cat 1}
\end{subfigure}
\end{tabular}
&
\begin{tabular}[t]{c}
\begin{subfigure}[t]{0.4\textwidth}
\centering
\includegraphics[width=0.9\textwidth]{"fig/example/cat1"}
\caption{Cat 2}
\end{subfigure}
\\
\begin{subfigure}[t]{0.4\textwidth}
\centering
\includegraphics[width=0.9\textwidth]{"fig/example/cat2"}
\caption{Cat 3}
\end{subfigure}
\end{tabular}
\end{tabular}
\caption{Cats}
\end{figure}
\end{document}


documentclassand used package and make it compilable. The cats are cute ... – Zarko Jan 09 '16 at 01:10