Declension table of ?pāpīyastva

Neuter	Singular	Dual	Plural
Nominative	pāpīyastvam	pāpīyastve	pāpīyastvāni
Vocative	pāpīyastva	pāpīyastve	pāpīyastvāni
Accusative	pāpīyastvam	pāpīyastve	pāpīyastvāni
Instrumental	pāpīyastvena	pāpīyastvābhyām	pāpīyastvaiḥ
Dative	pāpīyastvāya	pāpīyastvābhyām	pāpīyastvebhyaḥ
Ablative	pāpīyastvāt	pāpīyastvābhyām	pāpīyastvebhyaḥ
Genitive	pāpīyastvasya	pāpīyastvayoḥ	pāpīyastvānām
Locative	pāpīyastve	pāpīyastvayoḥ	pāpīyastveṣu

Compound pāpīyastva -

Adverb -pāpīyastvam -pāpīyastvāt