Fomishka warbled out and waited for Snandulia to play the trill.
Outside she could hear the sigh of the oaks and the trill of young voices.
Who teaches the young chipper to trill, and the young linnet to warble?
The only sound he could hear was the trill and chirp of the insects of the woods.
He indulged copiously in the trill, which he produced by shaking his head.