English: Peripheral (white) and central (blue) vowel space illustrated on a cardinal vowel chart. Note that all cardinal vowels are peripheral.
Date
Source
Own work, based on both the vowel chart in Collins, Beverley; Mees, Inger M. (1981) The Phonetics of English and Dutch, 5th edition, Leiden: Brill Publishers, published 2003, page 227 and the official IPA vowel chart.
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