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 | | In front vowels, such as, the tongue is positioned forward in the mouth, whereas in back vowels, such as, the tongue is positioned towards the back of the mouth. |
 | | However, some languages treat roundedness and backness separately, such as French and German (with front rounded vowels), most Uralic languages (has a rounding contrast for /o/ and front vowels), Turkic languages (with an unrounded /u/), Vietnamese (with back unrounded vowels), and Korean (with a contrast in both front and back vowels). |
 | | English has all three types: the vowel sound in hit is a monophthong, the vowel sound in boy is in most dialects a diphthong, and the vowel sounds of way, flower (BrE AmE) form a triphthong (dissylabic in the latter cases), although the particular qualities vary by dialect. |
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