Voiced bilabial trill

Features of a voiced bilabial trill: In most instances, it is only found as the trilled release of a prenasalized stop. ==Occurrence==

Plain Prenasalized Prestopped trills and stops with trill release ==Phonology==

In many of the languages in which the bilabial trill occurs, it occurs only as part of a prenasalized bilabial stop with trilled release, . That developed historically from a prenasalized stop before a relatively high back vowel like . In such instances, the sounds are usually still limited to the environment of a following . However, the trills in Mangbetu may precede any vowel and are sometimes preceded by only a nasal. ==See also==