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<table>Astral configurations (a) 11#(4,3;2) and (b) 11#(5,3;1) labeled to show the isomorphism with 11#(4,2;1).</table>

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Figure 8: Geometric Realization of Some Triangle-Free Combinatorial Configurations <svg style="vertical-align:-3.25793pt;width:21.85px;" id="M1" height="14.9375" version="1.1" viewBox="0 0 21.85 14.9375" width="21.85"  xmlns="http://www.w3.org/2000/svg">
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Geometric Realization of Some Triangle-Free Combinatorial Configurations 𝟐 𝟐 𝟑

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Geometric Realization of Some Triangle-Free Combinatorial Configurations