What's the correct way to count chelate rings in [Co(EDTA)]-?

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What are the five chelate rings in [Co(EDTA)]-
Since I can't find a definition I just drew cycles.
1722717348861.png

1722717353537.png


When to start and end?
 

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Well, I see five purple linkages in the diagram, so maybe that gives you a hint...
 

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