Declension table of ?tastyāna

Neuter	Singular	Dual	Plural
Nominative	tastyānam	tastyāne	tastyānāni
Vocative	tastyāna	tastyāne	tastyānāni
Accusative	tastyānam	tastyāne	tastyānāni
Instrumental	tastyānena	tastyānābhyām	tastyānaiḥ
Dative	tastyānāya	tastyānābhyām	tastyānebhyaḥ
Ablative	tastyānāt	tastyānābhyām	tastyānebhyaḥ
Genitive	tastyānasya	tastyānayoḥ	tastyānānām
Locative	tastyāne	tastyānayoḥ	tastyāneṣu

Compound tastyāna -

Adverb -tastyānam -tastyānāt