In order to maintain the security of encrypted communication, we perform key exchanges regularly.

Every morning, I check the lock opening before leaving the house.

I forgot my key and ended up not being able to get into my house.

This ancient ruin is engraved with the shape of a counterclockwise swastika.

I was amazed by his unparalleled skills.

His car was in very bad condition, so he had no choice but to send it for repair.

His health condition is very bad.

That species is on the brink of extinction.

The species was exterminated by humans.

Your actions are absolutely unforgivable.