I need assistance in finding out how to fill the intersection between the shapes RO1, RO2, RO4, RO5 in the following. Assistance appreciated.
\documentclass[border=5]{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes}
\begin{document}
\begin{tikzpicture}
\node [draw, ellipse, thick, rotate=90, green!50!black, minimum width=9cm, minimum height=4.4cm, align=center] at (0,0.7)(RO1){};
\node [draw, ellipse, thick, rotate=24, green!50!black, minimum width=9cm, minimum height=4.4cm, align=center] at (0.2,-0.5)(RO2){};
\node [draw, ellipse, thick, rotate=162, green!50!black, minimum width=8cm, minimum height=4.4cm, align=center] at (-0.7,0.5)(RO5){};
\node [draw, ellipse, thick, rotate=235, green!50!black, minimum width=9cm, minimum height=4.4cm, align=center] at (-1.33,-0.7)(RO4){};
\node [draw, ellipse, thick, rotate=130, green!50!black, minimum width=9cm, minimum height=4.4cm, align=center] at (-0.1,-1.5)(RO3){};
\end{tikzpicture}
\end{document}

