Namely, 12 letters
Certainly, 8 letters
Indeed!, 8 letters
No doubt about it, 8 letters
No doubt!, 8 letters
Now, I admit..., 8 letters
Of course..., 8 letters
Without a doubt!, 8 letters
Admittedly, 8 letters
But of course, 8 letters
For certain, 8 letters
Indisputably, 8 letters
Without doubt, 8 letters
Yea, 8 letters
Middle of the reminder, 15 letters