Whenever a consonant of this class occurs in a word, all preceding vowels must be flat vowels.

Her southern accent, laced with the flat vowels of southern Arkansas, was the thickest I'd heard in years.

His voice was marked by flat northern vowels and was so soft Dexter felt the muscles in his cheeks tense as he strained to hear.

"Heikki," said the voice-her own voice, if deeper; the same tricks of phrase and the same flat vowels.

The voice was deep and rich, with a trace of an accent Martin couldn't place, flat vowels and a hint of old-fashioned formality.

She loved those flat vowels of his.

But with our flat vowels and mushy consonants it's more likely that we merely seemed cheap.

The sibilant s, followed by a flat vowel and hard consonants.

Some of the flat vowels of Scandinavia lingered in Svenson's speech.

He spoke with the flat vowels and harsh consonants of Kansas.