| 21. | Trills involve the vibration of one of the speech organs.
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| 22. | Increasing the stricture of a typical trill results in a trilled fricative.
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| 23. | These examples are an approximation of how a trill might be executed.
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| 24. | Her trill remains wonderfully fluent and accurate and her diction is excellent.
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| 25. | The sounds made are whistles, trills, and buzzes.
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| 26. | However, trills may also be produced with only a single period.
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| 27. | Non-standard varieties employ the alveolar trill more often.
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| 28. | The male's song is a short high-pitched trill.
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| 29. | This statement of the subject disintegrates into a trill, and silence.
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| 30. | The opposite process happens with fricatives, affricates, laterals and trills.
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