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\documentclass[border=10pt]{standalone}
\usepackage[left=25mm,right=25mm,top=25mm,bottom=25mm]{geometry}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{times}
\usepackage{geometry}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{mathrsfs}
\usepackage{amsfonts}
\usepackage{amsthm}
\usepackage{lipsum}
\usepackage{amscd}
\usepackage{graphicx}
\usepackage{fancyhdr}
\usepackage{textcomp}
\usepackage{pgfplots}
\usepackage{txfonts}
\usepackage[all]{xy}
\usepackage{paralist}
\usepackage[colorlinks=true]{hyperref}
\usepackage{array}
\usepackage{tikz}
\usepackage{slashed}
\usepackage{pdfpages}
\usepackage{cite}
\usepackage{url}
\usepackage{amsmath,amsfonts,amssymb}
\usepackage{tikz}
\usetikzlibrary{arrows,matrix,positioning}
\usetikzlibrary{overlay-beamer-styles}
\usetikzlibrary{matrix.skeleton}
\usetikzlibrary{automata,positioning}
\usetikzlibrary{decorations.text}
\usepackage{listings}
\usepackage{multirow}
\usepackage{color}

\begin{document}

\begin{tikzpicture}[ampersand replacement=\&]

\foreach \i in {1,...,4}
{
	\small{
		\matrix (X\i)[matrix of math nodes,nodes in empty cells,
		nodes = {draw, minimum size=10mm,
			anchor=center,
			inner sep=0pt, outer sep=0pt},
		column sep=-\pgflinewidth,
		row sep=-\pgflinewidth,
		] at (0,-\i*5)
		{
			A_{11}B_{11} \& A_{12}B_{11} \& A_{21}B_{11} \& A_{22}B_{11} \\
			A_{11}B_{21} \& A_{12}B_{21} \& A_{21}B_{21} \& A_{22}B_{21} \\
			A_{11}B_{11} \& A_{12}B_{12} \& A_{21}B_{12} \& A_{22}B_{12} \\
			A_{11}B_{22} \& A_{12}B_{22} \& A_{21}B_{22} \& A_{22}B_{22} \\
		};}
	
	\foreach \j in {1,...,7}
	{
		\matrix(M\i\j)[matrix of math nodes,nodes in empty cells,
		nodes = {draw, minimum size=10mm,
			anchor=center,
			inner sep=0pt, outer sep=0pt},
		column sep=-\pgflinewidth,
		row sep=-\pgflinewidth,
		] at (\j*5,-\i*5)
		{
			\& \& \& \\
			\& \& \& \\
			\& \& \& \\
			\& \& \& \\
		};
	}
}

\huge{
	\node at (-3,-20)  {$C_{22}=$};
	\node at (-3,-15) {$C_{21}=$} ;
	\node at (-3,-10) {$C_{12}=$} ;
	\node at (-3,-5) {$C_{11}=$} ;
	
	\node at (5,-2)  {I};
	\node at (10,-2)  {II};
	\node at (15,-2)  {III};
	\node at (20,-2)  {IV};
	\node at (25,-2)  {V};
	\node at (30,-2)  {VI};
	\node at (35,-2)  {VII};
}


\node[opacity=0.5, rounded corners=0pt, inner sep=-1pt, fill=green, fit=(X1-1-1)] {};
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\node[opacity=0.5, rounded corners=0pt, inner sep=-1pt, fill=green, fit=(M25-4-2)] {};

\node[opacity=0.5, rounded corners=0pt, inner sep=-1pt, fill=green, fit=(M32-1-4)] {};
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\node[opacity=0.5, rounded corners=0pt, inner sep=-1pt, fill=red, fit=(M46-3-1)] {};
\end{tikzpicture}

\end{document}