\begin{figure}[h]
    \centering
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist0.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist1.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist2.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist3.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist4.pdf}
  \end{subfigure}\\
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist5.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist6.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist7.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist8.pdf}
  \end{subfigure}
  \begin{subfigure}{0.19\textwidth}
    \includegraphics[width=\textwidth]{Figures/Data/mnist9.pdf}
  \end{subfigure}
  \caption[MNIST Database of Handwritten Digits]{The MNIST database of handwritten
    digits contains 70.000 images of preprocessed handwritten 
    digits. Of these images 60.000 are used as training images, while
    the rest is used to validate the models trained.}
  \label{fig:MNIST}
\end{figure}
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