Declension table of pitṛvyaputra

Masculine	Singular	Dual	Plural
Nominative	pitṛvyaputraḥ	pitṛvyaputrau	pitṛvyaputrāḥ
Vocative	pitṛvyaputra	pitṛvyaputrau	pitṛvyaputrāḥ
Accusative	pitṛvyaputram	pitṛvyaputrau	pitṛvyaputrān
Instrumental	pitṛvyaputreṇa	pitṛvyaputrābhyām	pitṛvyaputraiḥ pitṛvyaputrebhiḥ
Dative	pitṛvyaputrāya	pitṛvyaputrābhyām	pitṛvyaputrebhyaḥ
Ablative	pitṛvyaputrāt	pitṛvyaputrābhyām	pitṛvyaputrebhyaḥ
Genitive	pitṛvyaputrasya	pitṛvyaputrayoḥ	pitṛvyaputrāṇām
Locative	pitṛvyaputre	pitṛvyaputrayoḥ	pitṛvyaputreṣu

Compound pitṛvyaputra -

Adverb -pitṛvyaputram -pitṛvyaputrāt