Comment: Cf. also Lezg. Khl. čü-n, Ag. Bursh. č̌u-n, Fit. kü-n. The PL paradigm can be reconstructed as *ǯʷ[e]-n (nom.), obl. *ǯʷa-, gen. *-iǯʷ: cf. Lezg. kün, obl. kʷe- (Khl. čün,čʷe-, gen. žü < *(u_)iǯʷ-); Tab. uč̌u, gen. ič̌; Ag. čun, erg. če-š, gen. če (Bursh. nom./erg. č̌un, gen. ič̌; Fit. nom./erg. kün, dat. ḱʷa-s, gen. kü-t); Rut. Shin. we, gen. uš-dɨ; Tsakh. šu, gen. wuš-; Arch. žʷe-n, loc. žʷa-t, gen. wiš; Kryz. obl. wä-; Bud. waIn, gen. efi. The original dative stem *-eǯʷ is preserved only in Archi (wež).
See Бокарев 1961, 66; Талибов 1960a, 301; Гигинейшвили 1977, 114.