The unknown ATs(Alternate Timelines)

Hey, I have a potential theory idea
 
In the season 6 finale, right before Twilight reforms Starlight, they say this
 
Starlight: “I only saw what you showed me. Who knows what could have happened.”
 
Twilight: “I’ve been through it a dozen times. Things don’t turn out well in Equestria without my friends and I.”
 
If this is to be believed, then Twilight had seen 12 alternate timelines, 5 more than what was shown to us.  
So, what are these 5 unknown ATs, and what happened in each that was so terrible

I hate to burst your bubble, but that’s just another way of saying “many times”.

@Blissful690  
But why would she specifically say “a dozen” rather than “many”

Just because someone says a dozen times, doesn’t mean it’s literally a dozen times.

@Dragon-Phoenix  
That means it can be 12, it can 1 or it be 100 alternate timelines!
 
I would love to see those timelines.

@Cosmas-the-Explorer  
Agreed. There’s potential.

In the timeline when the villain ruled equestria sombra is the king of the Crystal empire