21. The only really non-common sounds are the interdentals of English and the rounded vowels of Hungarian. 22. In the IPA, the sign ?u?represents the close-mid central rounded vowel . 23. However, / w / or / u / was virtually never indicated before rounded vowels or word finally. 24. It is not clear if it is used by languages with rounded vowels that do not use visible rounding. 25. Arb�risht lacks the close front rounded vowel of Albanian, which is replaced by the close front unrounded vowel. 26. ,in Daighi tongiong pingim, represents mid central vowel or close-mid back rounded vowel in Taiwanese Hokkien. 27. O with tilde is used in the Khinalug language where it represents a nasalized close-mid back rounded vowel . 28. In most languages this rounded vowel is pronounced with compressed lips ( in an " exolabial " manner ). 29. Egyptologists conventionally Akkadian as " ausanqu " and " susinqu ", indicating an initial rounded vowel . 30. In some dialects and speech registers, the semivowel assimilates into a following or and produces the front rounded vowels and.