Proto-Yenisseian: *ʔas- / *sV-
Meaning: interrogative stem
Ket: aks (Донн.) "what?"; akśej5, akśejśaŋ5 'why', aśeś5 'which', aśka6 'when'
Yug: assa (Донн.) "what?"; (Кастр.) assa id., ases "what a"; asesaŋ5 / asejsaŋ5 'why', asejs3 'which', asera5 'who (of a woman)', āskej1 / āskejsit1 'when'
Kottish: šina, šena, g. šinai "what"; ašix 'which, who'
Comments: ССЕ 183-184. Pump. (Срсл.) jasgej 'when' is in reality Yug. Werner 1, 66.