\documentclass[12pt,tikz]{standalone}
\pdfinfoomitdate 1
\pdfsuppressptexinfo 1
\pdftrailerid{}
\usepackage[utf8]{inputenc}
\pagestyle{empty}

\begin{document}
\begin{tikzpicture}
	\node[inner sep=0pt] at (0,0)
		{\includegraphics[width=\linewidth,trim=0 1.3cm 0 0cm]{submod_00.pdf}};
	\node at (0, -2.5)
		{\tt memdemo};
	\node[inner sep=0pt] at (0,-5)
		{\includegraphics[width=\linewidth,trim=0 1.3cm 0 0cm]{submod_01.pdf}};
	\node at (0, -7.5)
		{\tt scramble};
	\node[inner sep=0pt] at (0, -11)
		{\includegraphics[width=\linewidth,trim=0 1.3cm 0 0cm]{submod_02.pdf}};
	\node at (0, -14.8)
		{\tt outstage};
	\node[inner sep=0pt] at (0,-16.6)
		{\includegraphics[width=\linewidth,trim=0 1.3cm 0 0cm]{submod_03.pdf}};
	\node at (0, -19)
		{\tt selstage};
\end{tikzpicture}
\end{document}