Standing dead still, trying to think of her next move, she heard a groan.

Through the crack in the door she heard a groan.

He heard a groan and sat up, a bit too quickly.

Just then, everyone heard a low groan from the back of the room.

He heard a groan from the other end of the line.

Again I heard a groan, but this time there could be no doubt that it was above my head.

He heard a groan of pain, desperate in the dark.

He heard a groan from the man on the floor.

I heard a groan from the women sitting on the steps.

I heard a small groan from his end of the table.