6.7.1. Interrogative and Indefinite Pronouns

1. There are two forms of the Interrogative-Indefinite Pronoun in Europaio, and each one corresponds to one different class in our system, qi to the Substantive, and qo to the Adjective pronouns.

NOTE 1. In the origin, qo and qi were possibly nouns which meant the unknown, and its interrogative/indefinite sense depended on the individual sentences. It was not until the IE II that both became pronouns with gender, thus functioning as interrogatives (stressed) or as indefinites (unstressed).

NOTE 2. The form qi is probably the original independent form (hence our adjective-substantive choice for the system), for which the adjective form is the o-stem qo. Some Europaio-derived dialects have chosen the o-stem only, as the Germanic, while some others have mixed them together in one paradigm, as the Indo-Iranian, Baltoslavic or Italic dialects.

2. The Substantive Interrogative Pronoun qi? , who?, what?, is declined in the Singular as follows:

3. The Adjective Interrogative Pronoun, qo?, who (of them)? what kind of? what? which? is declined throughout like the Relative:

 Qoteros?, who of two? is derived from the stem qo with the suffix -tero.

3. The Indefinite Pronouns qi/qo, any one, any, are declined like the corresponding Interrogatives.