\begin{table}[!h]
\begin{tabular}{ll}
\begin{tabular}[t]{|c|c|c|}
\hline
a & a & a \\
a & a & a \\
a & a & a \\
a & a & a \\
a & a & a \\
\end{tabular}
&
\begin{tabular}[t]{|c|c|}
\hline
b & c \\ \hline
d & e \\
\hline
\end{tabular}
\end{tabular}
\end{table}