Notes: Cf. also HU: Hurr., Urart. ag- 'to lead, to bring; to lead away' (see Diakonoff-Starostin 1986, 57).
Correspondences are regular, and the etymology seems quite satisfactory. The PN, PD (and probably PA) forms reflect the Ablaut grade *-ĭ-. See Абдоков 1983, 176.