ταύταις (taútais|tow'-taheece|noun|this), and ταύτας (taútas|tow'-tas)
[Grk] ταύταις, οὗτος GK: G4047
Derivation: dative case and accusative case feminine plural respectively of οὗτος;
Strong's: (to or with or by, etc.) these
KJV: --hence, that, then, these, those.
See: οὗτος