AKC event search help

I was looking at the AKC event search for shows in my area and the "number competed last year" confuses me a little. For example…

Competed Last Year: 42

What does the set of numbers mean? Are these numbers in particular classes and/or divided by sex? I couldn't find an explanation in the event search help.

Class dogs - Class bitches - (Dog Specials - Bitch Specials) - Non-regular

Thanks, I would not have guessed that. I was trying to fit in puppy, open, specials, etc.

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