Declension table of ?pitṛvana

Neuter	Singular	Dual	Plural
Nominative	pitṛvanam	pitṛvane	pitṛvanāni
Vocative	pitṛvana	pitṛvane	pitṛvanāni
Accusative	pitṛvanam	pitṛvane	pitṛvanāni
Instrumental	pitṛvanena	pitṛvanābhyām	pitṛvanaiḥ
Dative	pitṛvanāya	pitṛvanābhyām	pitṛvanebhyaḥ
Ablative	pitṛvanāt	pitṛvanābhyām	pitṛvanebhyaḥ
Genitive	pitṛvanasya	pitṛvanayoḥ	pitṛvanānām
Locative	pitṛvane	pitṛvanayoḥ	pitṛvaneṣu

Compound pitṛvana -

Adverb -pitṛvanam -pitṛvanāt