He found a small animal's burrow in the forest.

It seems that the mortise of this old furniture is loose.

As a carpenter, he has mastered the technique of making mortises.

The six holes of the human body play a very important role.

Mr. Anakubo is my friend.

I found a common rabbit in the park.

He was observing the outside through the peephole in the door.

He was so ashamed of his failure that he wished he could crawl into a hole.

He inserted his finger into the anus.

This realm is our treasure.