An open vowel is a sound made without your tongue blocking anything. The International Phonetic Alphabet has four symbols for open vowels: a, ɶ, ɑ, and ɒ.
Symbols to the right in a cell are voiced, to the left are voiceless. Gray areas are sounds which are impossible.
Gray areas are sounds which are impossible.
Vowels beside dots are: unrounded • rounded
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