How come we never see this in 3-way(M/F/F) porn?

_____I can only recall one time when this happened during a scene where it wasn't just in passing; it was actually the focus of the 3-way. It's when the 1st girl is on top, riding a guy with her legs wide open and feet on the floor/bed, and the 2nd girl is there to lick the 1st girl's pussy while the 1st girl is being fucked. Know what i mean?

Whenever we see scenes where there's a 3-way, the only reason the 2nd girl ever gets her face near the pussy being fucked is to either lick the guy's balls or just wait there till he decides to have her suck his dick for a few moments before going back to fucking the pussy of the 1st girl.

What i want to see is a 3-way where the focus is on the pussy being licked while it's being fucked at the same time. Where the guy never even pulls out or has his balls licked; he's just there to fuck the pussy, nothing else. If anyone knows of scenes like this, if you could link me to them i'd much appreciate it. Is there even a name for that kind of position/action in porn? There's a name for everything else.

And i'd also like to see some machine fucking of a girl while she has her pussy licked the whole time...and the machine is running on high speed. In fact that would be even better than is it was a guy! Anyone know of vids like that? I already have the entire archive of Kink's Fuckingmachines videos and there aren't many girl/girl scenes where that happens for any real length of time, it's always just in passing, really. Apparently, according to Kink, they don't like to do that for "safety" concerns. Pussy's! lol

Thanks.