\begin{tikzpicture}[x=1ex,y=1ex,baseline={([yshift=-.5ex]current bounding box.center)}]
    \coordinate (v0);
    \coordinate[right=.5 of v0] (v3);
    \coordinate[above left=1.5 of v0] (v1);
    \coordinate[below left=1.5 of v0] (v2);

    \coordinate[right=.7 of v3] (o);

    \draw (v3) to[bend left=20] (v2);
    \draw (v3) to[bend right=20] (v1);

    \draw (v1) to[bend right=80] (v2);
    \draw (v1) to[bend left=80] (v2);

    \filldraw (v1) circle(1pt);
    \filldraw (v2) circle(1pt);
    \filldraw (v3) circle(1pt);

    \draw (o) circle(.7);
\end{tikzpicture}%
