\documentclass{standalone}
\usepackage{tikz}
\usepackage{shapes}
\begin{document}
\begin{tikzpicture}
\foreach \i in {0,...,3}{
\foreach \j in {0,...,3}{
\cross{green}{(-2*\j,\j)++(\i,2*\i)}
}
\end{tikzpicture}
\end{document}