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Main sound category: Diphthongs
Source vowel: SoundCategory object (167)
Target vowel: SoundCategory object (189)
IPA symbol: io
IPA description: close front unrounded to close mid back rounded diphthong
UPSID symbol: calst_io
UPSID description: calst_io
Occurs in 2 languages
That is in 0.41% of all languages
Occurs in: Catalan (Central) Italian