Assertion: diphthong | /r/HasProperty | formed
Facets:
value: normally
type: DEGREE
value: from any vowel
type: OTHER
Source sentences:
text: A diphthong is formed when an unstressed i or u combines with another vowel a, e,
text: A diphthong is formed when an unstressed i or u combines with another vowel (a, e, o) or when the two vowels combine with each other, in which case either the i or u may remain unstressed.
text: Diphthongs Of the 18 diphthongs, 14 are formed from any vowel followed by a close vowel.
text: These diphthongs are formed by combining a 'weak' vowel /i/ or /u/ with a 'strong' vowel /a/
text: They are when a diphthong would normally be formed, but isn't, and are marked by an acute accent on the weak vowel.