Voiced alveolar trill
In Czech, there are two different alveolar trills. There is the normal trill, written r. There is also another trill, written ř. This is found in words such as rybáři  ('fishermen'),  ('four'), and the common surname Dvořák. The way it is pronounced is similar to  but the tongue is raised. This other trill is partially fricative, with the frication sounding rather like , though not so retracted. Thus in the IPA it is written as ⟨r⟩ plus the raising diacritic, ⟨⟩. (Before the 1989 IPA Kiel Convention, it had a dedicated symbol ⟨⟩). It is normally voiced, but there is a voiceless allophone  as with many other Czech consonants.