Two Pairs - Tips
This is going to be troublesome..
There are so many possible permutations and orientations of corners and edges that giving a formula for each case would be foolish.
Instead, I shall list out a few things to look for =)
Also, all of this should actually be intuitive, but it's good to have a look at this stuff sometimes.. Right?
Note that you want to get your corner/edge pairs WITHOUT disturbing the orientation of the edges..
Forming the first edge/corner pair
Correct orientation
One Side..
The Other Side..
Clockwise orientation
One Side..
The Other Side..
Anti-Clockwise orientation
One Side..
The Other Side..
If you look through all the examples, you will notice that half of the pairs created point toward the empty F2L slot while the other half point away.