Declension table of attṛ

Masculine	Singular	Dual	Plural
Nominative	attā	attārau	attāraḥ
Vocative	attaḥ	attārau	attāraḥ
Accusative	attāram	attārau	attṝn
Instrumental	attrā	attṛbhyām	attṛbhiḥ
Dative	attre	attṛbhyām	attṛbhyaḥ
Ablative	attuḥ	attṛbhyām	attṛbhyaḥ
Genitive	attuḥ	attroḥ	attṝṇām
Locative	attari	attroḥ	attṛṣu

Compound attṛ -

Adverb -attṛ