She tapped gently on the door and then went in.
After a minute or so, I felt a hand gently tapping the back of my head.
His fingers tapped gently on the edge of the table.
The other men watched as he tapped gently on the desk top.
The security chief gently tapped the surface of her console.
The Russian gently tapped the side of his black briefcase.
They were still discussing the situation twenty minutes later, when someone tapped gently on the front door.
He put up a finger and gently tapped her cheek.
She walked slowly towards the door, tapped gently, then stood back and waited.
"Now watch this," Charles said, and then he gently tapped one of its tiny leaves.