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.

He used a metal detector to search for treasure on the beach.

He likes to take a walk in the park at dusk.

They appear to be antagonistic on the surface, but in reality, they are seemingly not part of the same group.

Alkaline earth metals are located in Group 2 of the periodic table.