In Danian, primitive initial [gw] became [w] (PE19/18). The same is true of the initial clusters [ŋw] and [ŋgw] (PE20/19-20), so that this change was probably after [ŋ] became [g] and initial nasals vanished before stops. However, in East Danian, the resulting [w] was preserved and did not become [v], so this change was probably before non-initial [w] became [v] in East Danian.