Declension table of ?poṣṭṛvara

Neuter	Singular	Dual	Plural
Nominative	poṣṭṛvaram	poṣṭṛvare	poṣṭṛvarāṇi
Vocative	poṣṭṛvara	poṣṭṛvare	poṣṭṛvarāṇi
Accusative	poṣṭṛvaram	poṣṭṛvare	poṣṭṛvarāṇi
Instrumental	poṣṭṛvareṇa	poṣṭṛvarābhyām	poṣṭṛvaraiḥ
Dative	poṣṭṛvarāya	poṣṭṛvarābhyām	poṣṭṛvarebhyaḥ
Ablative	poṣṭṛvarāt	poṣṭṛvarābhyām	poṣṭṛvarebhyaḥ
Genitive	poṣṭṛvarasya	poṣṭṛvarayoḥ	poṣṭṛvarāṇām
Locative	poṣṭṛvare	poṣṭṛvarayoḥ	poṣṭṛvareṣu

Compound poṣṭṛvara -

Adverb -poṣṭṛvaram -poṣṭṛvarāt