Declension table of ?ātu

Masculine	Singular	Dual	Plural
Nominative	ātuḥ	ātū	ātavaḥ
Vocative	āto	ātū	ātavaḥ
Accusative	ātum	ātū	ātūn
Instrumental	ātunā	ātubhyām	ātubhiḥ
Dative	ātave	ātubhyām	ātubhyaḥ
Ablative	ātoḥ	ātubhyām	ātubhyaḥ
Genitive	ātoḥ	ātvoḥ	ātūnām
Locative	ātau	ātvoḥ	ātuṣu

Compound ātu -

Adverb -ātu