The primitive semi-vowel [w] generally survived Ossiriandic both medially and finally (PE19/19, 23), and also developed initially from [gw] when initial [g] was lost before [w]. It was sometimes lost medially, however, when [w] vanished after medial velars in Ossiriandic. In East Danian, it survived initially (and also developed from initial [gw]), but non-initial [w] became [v] in East Danian (PE19/19, 23).