I was thinking the same

But I’ve never heard that word before and just looked it up in Wikipedia. And there they state to list all of them, but I didn’t see an ‘m’ - which I would put in as well, if I understood the definition correctly

That’s my point, I’m not sure, if I miss something here or the article just isn’t correct/complete

https://de.wikipedia.org/wiki/Bilabial

Edit: seems, I’m just blind