COMMENT: Despite the root's somewhat expressive character, correspondences are regular, and the PNC reconstruction seems reliable. Traces of *-r-conjugation can be found in PA (stem II *q:ur-), and perhaps also in Darg. (medial -r- which is otherwise unclear) - although the decisive evidence of certain Lezghian languages is missing. See also comments to PEC *Harq_wV 'to dig'.
