Комментарии:АПиПЯЯ 18, 55, 81, 104, 278 (with literature). Initial *n- in Jpn. is probably due to assimilation to the following nasal (the most usual form is *na-ni); there also exists an interrogative *i- (in *i-ka 'how', *i-n-ture 'which' etc., reflecting nasalless *ŋi-. Vocalism in this archaic monosyllabic pronoun is not quite clear, evidently because of different suffixation.
