Read the following dialog and answer the question.

Narnia  : Hey, Judith. Guess what? My article will be published in The MOST magazine this month!
Judith  : Wow, what a great achievement! That's cool, Narnia.
Narnia  : Thank you. I've worked so hard to write this special article.
Judith  : I know it. I can't wait to read your article published in that magazine. I'm sure I'll buy it.
Narnia  : Thank you.

The exclamative expression of congratulating that is presented in the dialog is ...