\begin{tikzpicture}[scale=.7] \begin{scope}[xshift=.2cm,yshift=3cm] \draw (0,0) circle (1.2cm); \draw (-1.2,0) arc (180:360:1.2 and 0.3); \draw[dashed] (1.2,0) arc (0:180:1.2 and 0.3); \draw (0,-1.5) node{\(H_0\)}; \end{scope} \begin{scope}[xshift=4.2cm,yshift=3cm,xscale=.6] \draw (0,0) ellipse (2.5cm and 1cm); \draw (-1.5,.07) arc (180:360:1.5cm and .3cm); \draw (1.2,-.1) arc (0:180:1.2cm and .3cm); \draw (4,0) ellipse (2.5cm and 1cm); \draw (2.5,.07) arc (180:360:1.5cm and .3cm); \draw (5.2,-.1) arc (0:180:1.2cm and .3cm); \fill[color=white](2,.6) to [bend right=50] (1.45,0) to [bend right = 50] (2,-.6) to [bend right=50] (2.55,.0) to [bend right=50] (2,.6); \draw (2,-1.5) node{\(H_2\)}; \end{scope} \begin{scope}[xscale=.6] \draw (0,0) ellipse (2.5cm and 1cm); \draw (-1.5,.07) arc (180:360:1.5cm and .3cm); \draw (1.2,-.1) arc (0:180:1.2cm and .3cm); \draw (4,0) ellipse (2.5cm and 1cm); \draw (2.5,.07) arc (180:360:1.5cm and .3cm); \draw (5.2,-.1) arc (0:180:1.2cm and .3cm); \fill[color=white](2,.6) to [bend right=50] (1.45,0) to [bend right = 50] (2,-.6) to [bend right=50] (2.55,.0) to [bend right=50] (2,.6); \begin{scope}[xshift=8.5cm] \draw (0,0) ellipse (2.5cm and 1cm); \draw (-1.5,.07) arc (180:360:1.5cm and .3cm); \draw (1.2,-.1) arc (0:180:1.2cm and .3cm); \draw (4,0) ellipse (2.5cm and 1cm); \draw (2.5,.07) arc (180:360:1.5cm and .3cm); \draw (5.2,-.1) arc (0:180:1.2cm and .3cm); \fill[color=white](2,.6) to [bend right=50] (1.45,0) to [bend right = 50] (2,-.6) to [bend right=50] (2.55,.0) to [bend right=50] (2,.6); \fill[color=white](-2.5,0) ellipse (.53cm and .5cm); \end{scope} \draw (6.2,-1.5) node{\(H_4\)}; \end{scope} \end{tikzpicture}