Hashio-san is my best friend.

This company is aiming for diversification of products.

The serrated blade of this knife is suitable for cutting hard objects.

He received an indictment.

I received a letter of recommendation from my teacher for admission to university.

The police are investigating the source of the threatening letter.

I received a wedding invitation letter from a friend yesterday.

The police issued an arrest warrant against him.

He received the letter challenging him to a duel and began preparing for the duel.

He is doing special exercises to strengthen his sagittal muscles.