\newcommand{\bepis}{\raise-0.497ex\hbox{\begin{tikzpicture}[scale=0.0373ex]
\fill[red] plot [domain=-0.9887:0.9887,samples=200] ({\x},{0.15*sin(180/(0.9887)*\x)+0.15}) -- plot [domain=-0.9887:0.9887,samples=200] ({-\x},{(1-(\x)^2)^(1/2)});
\fill[blue] plot [domain=-0.9887:0.9887,samples=200] ({\x},{(0.15*sin(180/(0.9887)*\x)-0.15}) -- plot [domain=-0.9887:0.9887,samples=200] ({-\x},{-(1-(\x)^2)^(1/2)});
\draw[very thin] (0,0) circle (1);
\end{tikzpicture}}}