ochem odyssey question

[toothbrushpjs]

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Number 26 chapter 3.
I can't figure out how to put the picture up, but what are the [4.4.1], [4.4.0], [4.3.0] mean when naming cycloalkanes?
thanks!

 

[Baylor2011]

# of carbons in largest ring, # of carbons in shortest rings, and # of carbons in the "bridge"