Interrogative and indefinite pronouns

Both interrogative and indefinite pronouns are inflected by the third declension. They have exactly the same forms. The only difference is that indefinite pronouns loose their accent (τίς → τις). It is crucial to remember this slight change. Their meaning is:

Sg. N G D A
m/f τίς τίνος τίνι τίνα
n τί τίνος τίνι τί
m/f τίνες τίνων τίσι(ν) τίνας
n τίνα τίνων τίσι(ν) τίνα