COMMENT: Correspondences are regular, except for some vocalic problems: not clear is the *-a-vowel in PA (*-i- would be expected regularly; perhaps we deal with a case of Ablaut here).
Trubetzkoy (1930, 277) proposed a different comparison (WC *q̇́Ia ~ EC *kwīlʡɨ 'hand'), which seems improbable for phonetic reasons.
