It's hard to say, but I think you're wrong.

He always used to say, 'It's easy to say, but hard to do.'

He is good at expressing his feelings well.

The trailing edge of this airplane has a very unique shape.

After school, we study at the library.

He suffered a minor contusion on his occiput.

He sneaked into the school through the back gate.

He was unconsciously following the woman.

This word is used as a postposition.

He placed the honorific after his name.