Declension table of upapurāṇa

Neuter	Singular	Dual	Plural
Nominative	upapurāṇam	upapurāṇe	upapurāṇāni
Vocative	upapurāṇa	upapurāṇe	upapurāṇāni
Accusative	upapurāṇam	upapurāṇe	upapurāṇāni
Instrumental	upapurāṇena	upapurāṇābhyām	upapurāṇaiḥ
Dative	upapurāṇāya	upapurāṇābhyām	upapurāṇebhyaḥ
Ablative	upapurāṇāt	upapurāṇābhyām	upapurāṇebhyaḥ
Genitive	upapurāṇasya	upapurāṇayoḥ	upapurāṇānām
Locative	upapurāṇe	upapurāṇayoḥ	upapurāṇeṣu

Compound upapurāṇa -

Adverb -upapurāṇam -upapurāṇāt