Sentence examples for once not from inspiring English sources

"Not once?" "Not once".

Not once, not twice, but three times.

I caught my breath — for once not because of turbulence.

And for once, not much was heard from Donald Trump.

Once, not so long ago, motorcycles did the same thing.

"She came by not once, not twice," he said.

Not once, not twice, but again and again.

I was thin again once not so long ago.

All these things were once not known and are now accepted as fundamental.

The triple crown, while always rare, was once not an unthinkable occurrence.

He is, it should be said at once, not your regimental sergeant-major type of headteacher.