Declension table of ?aṣṭaputra

Masculine	Singular	Dual	Plural
Nominative	aṣṭaputraḥ	aṣṭaputrau	aṣṭaputrāḥ
Vocative	aṣṭaputra	aṣṭaputrau	aṣṭaputrāḥ
Accusative	aṣṭaputram	aṣṭaputrau	aṣṭaputrān
Instrumental	aṣṭaputreṇa	aṣṭaputrābhyām	aṣṭaputraiḥ aṣṭaputrebhiḥ
Dative	aṣṭaputrāya	aṣṭaputrābhyām	aṣṭaputrebhyaḥ
Ablative	aṣṭaputrāt	aṣṭaputrābhyām	aṣṭaputrebhyaḥ
Genitive	aṣṭaputrasya	aṣṭaputrayoḥ	aṣṭaputrāṇām
Locative	aṣṭaputre	aṣṭaputrayoḥ	aṣṭaputreṣu

Compound aṣṭaputra -

Adverb -aṣṭaputram -aṣṭaputrāt