twos

They explored all the passages and dark tunnels in the palace and the hundreds of little dark rooms, but they never remembered what they had seen and what they had not; and so drifted about in ones and twos or crowds telling each other that they were doing as men did.

“Those are really aces and twos which you see, but my shots have turned them into threes, fives, sevens, eights, nines, and tens.”