All correspondences are regular. Lak. ḳa-nu (as the similar ša-nu 'bed' q.v.) is a result of regular dropping of the initial syllable beginning with a labial resonant and containing a narrow vowel (ḳa-nu < *wVḳa-nu). The correlation of Av. b-, PA *m-, Lak. *w- (*b-), PL *w- and PWC *P- points to PNC initial *w- and medial *-l- (dropped everywhere, and exceptionally preserved as *-n- in PL). See Abdokov 1983, 90. The PWC-PEC comparison see in Balkarov 1964, 101; 1967, 117 (the comparison of Av. baḳ with other WC data - Kab. baq 'stable', see Acharyan 1, 907 - is unacceptable). Quite improbable is the inner analysis of the PAK form and its comparison with Kartvelian (PK *q̇ana 'field'), see Rogava 1956, 20-21.