Declension table of ?prāyaṇīyatva

Neuter	Singular	Dual	Plural
Nominative	prāyaṇīyatvam	prāyaṇīyatve	prāyaṇīyatvāni
Vocative	prāyaṇīyatva	prāyaṇīyatve	prāyaṇīyatvāni
Accusative	prāyaṇīyatvam	prāyaṇīyatve	prāyaṇīyatvāni
Instrumental	prāyaṇīyatvena	prāyaṇīyatvābhyām	prāyaṇīyatvaiḥ
Dative	prāyaṇīyatvāya	prāyaṇīyatvābhyām	prāyaṇīyatvebhyaḥ
Ablative	prāyaṇīyatvāt	prāyaṇīyatvābhyām	prāyaṇīyatvebhyaḥ
Genitive	prāyaṇīyatvasya	prāyaṇīyatvayoḥ	prāyaṇīyatvānām
Locative	prāyaṇīyatve	prāyaṇīyatvayoḥ	prāyaṇīyatveṣu

Compound prāyaṇīyatva -

Adverb -prāyaṇīyatvam -prāyaṇīyatvāt