Declension table of ?īyivas

Neuter	Singular	Dual	Plural
Nominative	īyivat	īyuṣī	īyivāṃsi
Vocative	īyivat	īyuṣī	īyivāṃsi
Accusative	īyivat	īyuṣī	īyivāṃsi
Instrumental	īyuṣā	īyivadbhyām	īyivadbhiḥ
Dative	īyuṣe	īyivadbhyām	īyivadbhyaḥ
Ablative	īyuṣaḥ	īyivadbhyām	īyivadbhyaḥ
Genitive	īyuṣaḥ	īyuṣoḥ	īyuṣām
Locative	īyuṣi	īyuṣoḥ	īyivatsu

Compound īyivat -

Adverb -īyivas