pondering

“But, I say,” remarked the police sergeant, whose slow, bucolic common sense was still pondering the open window.

I left Holmes seated in front of the smouldering fire, and long into the watches of the night I heard the low, melancholy wailings of his violin, and knew that he was still pondering over the strange problem which he had set himself to unravel.

I was anxiously pondering the matter when I looked up, and there was Godfrey Emsworth standing before me."