Declension table of ?sādhuputra

Masculine	Singular	Dual	Plural
Nominative	sādhuputraḥ	sādhuputrau	sādhuputrāḥ
Vocative	sādhuputra	sādhuputrau	sādhuputrāḥ
Accusative	sādhuputram	sādhuputrau	sādhuputrān
Instrumental	sādhuputreṇa	sādhuputrābhyām	sādhuputraiḥ sādhuputrebhiḥ
Dative	sādhuputrāya	sādhuputrābhyām	sādhuputrebhyaḥ
Ablative	sādhuputrāt	sādhuputrābhyām	sādhuputrebhyaḥ
Genitive	sādhuputrasya	sādhuputrayoḥ	sādhuputrāṇām
Locative	sādhuputre	sādhuputrayoḥ	sādhuputreṣu

Compound sādhuputra -

Adverb -sādhuputram -sādhuputrāt