Declension table of ?pitṛṣad

Neuter	Singular	Dual	Plural
Nominative	pitṛṣat	pitṛṣadī	pitṛṣandi
Vocative	pitṛṣat	pitṛṣadī	pitṛṣandi
Accusative	pitṛṣat	pitṛṣadī	pitṛṣandi
Instrumental	pitṛṣadā	pitṛṣadbhyām	pitṛṣadbhiḥ
Dative	pitṛṣade	pitṛṣadbhyām	pitṛṣadbhyaḥ
Ablative	pitṛṣadaḥ	pitṛṣadbhyām	pitṛṣadbhyaḥ
Genitive	pitṛṣadaḥ	pitṛṣadoḥ	pitṛṣadām
Locative	pitṛṣadi	pitṛṣadoḥ	pitṛṣatsu

Compound pitṛṣat -

Adverb -pitṛṣat