Declension table of ?puṇyatva

Neuter	Singular	Dual	Plural
Nominative	puṇyatvam	puṇyatve	puṇyatvāni
Vocative	puṇyatva	puṇyatve	puṇyatvāni
Accusative	puṇyatvam	puṇyatve	puṇyatvāni
Instrumental	puṇyatvena	puṇyatvābhyām	puṇyatvaiḥ
Dative	puṇyatvāya	puṇyatvābhyām	puṇyatvebhyaḥ
Ablative	puṇyatvāt	puṇyatvābhyām	puṇyatvebhyaḥ
Genitive	puṇyatvasya	puṇyatvayoḥ	puṇyatvānām
Locative	puṇyatve	puṇyatvayoḥ	puṇyatveṣu

Compound puṇyatva -

Adverb -puṇyatvam -puṇyatvāt