\begin{tikzpicture}[x=1ex,y=1ex,baseline={([yshift=-.5ex]current bounding box.center)}]
    
    \coordinate (v);

    \coordinate [above=1.2 of v] (vm1);
    \coordinate [left=1 of vm1] (v01);
    \coordinate [right=1 of vm1] (v11);
    \draw (v01) -- (v11);
    \draw (vm1) circle(1);
    \filldraw (v01) circle (1pt);
    \filldraw (v11) circle (1pt);

    \coordinate [below=1.2 of v] (vm2);
    \coordinate [left=.75 of vm2] (v02);
    \coordinate [right=.75 of vm2] (v12);
    \coordinate [left=.7 of v02] (i02); 
    \coordinate [right=.7 of v12] (o02); 
    \draw (v02) -- (v12);
    \filldraw (v02) circle (1pt);
    \filldraw (v12) circle (1pt);
    \draw (i02) circle(.7);
    \draw (o02) circle(.7);
\end{tikzpicture}%
