Cf. also Lezg. pret. awu-na, Rut. pres. =ɨʔɨ-r ( < =iʔɨ-r). The root demonstrates the Ablaut *a/*i (besides Lezg. iji-, Rut. =ɨʔɨ- cf. also Tab. Düb. dur. iṗu-r-). Tab. -ṗ- is a result of cohesion (class marker -b- + the root laryngeal -ʔ-). In Ag. the general word for 'do, make' is aq̇a-s (see *ʔaq̇a-). It seems possible, however, to derive from PL *ʔaʔa(r)- the Ag. (Rich.) word for 'to put through', q-uf- ( < *q-V-p-ʔ-): cf. Ag. Bursh. q-arq̇a- (from the root *ʔaq̇a-), Tab. q-aṗ- 'to put through'.
The Shakhdagh data speak strongly in favour of the original *-r-conjugation, although the reasons for loss of -r- in Tsakhur (which usually preserves it well) are not clear.