So, that largely leaves only being able to restating what is known and obvious.
And it bears repeating that while it is a fair principle of law that if someone has lied once under oath, one may presume that they have lied about everything -- that is a totally separate matter from the person actually lying about anything else, let alone everything.
Best quote of the day thus far: Cohen to Republicans on the Committee trying to protect Trump. "i'm responsible for your silliness because i did the same thing you're doing now - for 10 years"