Allow overlapping of edges

Hi, I would like to create a graph like this: 

You could see that edges are forced to be overlapped. 

But whatever I try, I get this rendering:

Is there anyway to force the edge overlap ? 



desired.png22.19 KB
produced.png22.58 KB

Dot, by default, tries to

Dot, by default, tries to remove all edge crossings. You need to add additional contraints to make sure edges cross. In your case, try adding the line

{rank=same Egg->Face[style=invis]}

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