Kotan sat for a while deep in thought.

"The guy who sits deep in the hole only sees the edges," he said.

Eddie sat for a moment deep in thought.

While the ship was eventually rigged for conventional sails, the heavy construction made it sit deep in the water.

That onslaught let the rest of the side sit deep.

The professor went home too, to sit in his chair deep in thought.

At last we slept, all save Mace who sat by the fire deep in thought.

He sits on a branch deep in the woods, pondering his first flight in late May.

The old man's senior advisers, a half-dozen elders, sat with him deep in the stone compound of Petra.

He sat as still as a guru deep in meditation.