per ongeluk in English:

I met her by accident. I broken the cup by accident

He destroyed the fence when he fell on it by accident.

When Kevin was tidying up he threw away some of Julie’s letters by accident.

I'm sorry, I sent this email to you by accident.

It happened by accident.

discover by accident

I meant to call Helen, but I called Roger by accident.

Tom apologized to Mary for accidentally stepping on her foot.

Manholes are round because that way they won't accidentally fall through the hole.

Tom had to have his stomach pumped because he had accidentally eaten some rat poison.

I accidentally knocked a glass over.

Loopholes are created accidentally.

Oh no, I accidentally sawed off my finger! What should I do?

It's so easy to write good example sentences, that even if we accidentally delete a few good sentences in the process of getting rid of a whole lot of bad ones, I think we could drastically improve the quality of this corpus by doing a lot of deleting.

A farm boy accidentally overturned his wagonload of wheat on the road.

Willie accidentally let off his father's shotgun and made a hole in the wall.

One of your friends accidentally picks up a very hot piece of wood.

A person was hurt accidentally during the protest.

we met accidentally in Istanbul

Malzahar is unable to make actions for the first 0.5 seconds of the ability to prevent Malzahar from accidentally cancelling his ultimate.

Have you ever accidentally taken something from a shop without paying?

Christopher Columbus once accidentally ate a sea urchin. Then, he did it a second time... intentionally.