
Well, that's CERTAINLY
a thought-provoking hypothesis.
The Big Bang Theory Season 2, Episode 13

We CERTAINLY have been.
Game of Thrones Season 4, Episode 1

Well, that CERTAINLY explains
my marriage to Sheldon's father.
The Big Bang Theory Season 9, Episode 24

I CERTAINLY could.
The Big Bang Theory Season 12, Episode 7

Certainly the richest.
Game of Thrones Season 1, Episode 10