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29 lines
1.3 KiB
29 lines
1.3 KiB
\begin{center}
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\begin{tikzpicture}[scale=0.2]
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\tikzstyle{every node}+=[inner sep=0pt]
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\draw [black] (11,-26.9) circle (3);
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\draw (11,-26.9) node {$s_2$};
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\draw [black] (23.6,-15) circle (3);
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\draw (23.6,-15) node {$s_1$};
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\draw [black] (23.6,-38) circle (3);
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\draw (23.6,-38) node {$s_4$};
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\draw [black] (36.7,-26.9) circle (3);
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\draw (36.7,-26.9) node {$s_3$};
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\draw [black] (21.42,-17.06) -- (13.18,-24.84);
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\fill [black] (13.18,-24.84) -- (14.11,-24.65) -- (13.42,-23.93);
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\draw [black] (3.7,-26.9) -- (8,-26.9);
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\fill [black] (8,-26.9) -- (7.2,-26.4) -- (7.2,-27.4);
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\draw [black] (25.89,-36.06) -- (34.41,-28.84);
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\fill [black] (34.41,-28.84) -- (33.48,-28.98) -- (34.12,-29.74);
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\draw [black] (34.48,-24.88) -- (25.82,-17.02);
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\fill [black] (25.82,-17.02) -- (26.08,-17.93) -- (26.75,-17.18);
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\draw [black] (13.25,-28.88) -- (21.35,-36.02);
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\fill [black] (21.35,-36.02) -- (21.08,-35.11) -- (20.42,-35.86);
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\draw [black] (25.456,-12.658) arc (169.34618:-118.65382:2.25);
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\end{tikzpicture}
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\end{center}
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