Comments: Andian languages reflect a complex stem *b-iš:-di- (or *b-iš:-ti-), with exceptional development of the medial cluster *-š:d-. The stem is originally oblique ( < PEC *w-iźwV- with a class marker; cf. also Akhv. ušdi < *u_-iźwV- with another class prefix), and the morpheme *-di- most probably reflects the PEC attributive suffix *-dV.
