From what I can see - you can't.

The result of 9|3=11
That could have also come from
10|1
9|2
10|3

and that can keep on going. Now, you can technically figure out that this result contains a 9 by saying 11 & 9 - that would return 9 indicating that it does exist in this value, but you can't figure out if that was the actual number used to get 11.