crn.tex

\noindent\begin{minipage}{\textwidth}
    \begin{minipage}[c][6cm][c]{\dimexpr0.33\textwidth-0.5\Colsep\relax}        
        \begin{subfigure}[c]{1.0\textwidth}
            \input{crnPU.tex}
            \label{subfig:crnPU}
        \end{subfigure}
        %\input{crnPU.tex}
    \end{minipage}\hfill
    \begin{minipage}[c][6cm][c]{\dimexpr0.33\textwidth-0.5\Colsep\relax}      
        \begin{subfigure}[b]{1.0\textwidth}
            \input{crnPUIntermediate.tex}
            \label{subfig:crnPUIntermediate}
        \end{subfigure}
    \end{minipage}\hfill
    \begin{minipage}[c][6cm][c]{\dimexpr0.33\textwidth-0.5\Colsep\relax}      
        \begin{subfigure}[b]{1.0\textwidth}
            \input{crnSU.tex}
            \label{subfig:crnSU}
        \end{subfigure}
    \end{minipage}%
\end{minipage}