Assertion: diphthong's vowel | /r/HasProperty | u
Facets:
Source sentences:
text: Our final diphthong is actually a combination of the glide [j] and the vowel [u] (see footnote 2).
text: Although I would not be shocked to learn of a language with a contrast [wu] vs [uu], the obvious question to ask is why one is claiming that there is a diphthong [uu] as opposed to a long vowel [u:]