Declension table of ?vacanīyatva

Neuter	Singular	Dual	Plural
Nominative	vacanīyatvam	vacanīyatve	vacanīyatvāni
Vocative	vacanīyatva	vacanīyatve	vacanīyatvāni
Accusative	vacanīyatvam	vacanīyatve	vacanīyatvāni
Instrumental	vacanīyatvena	vacanīyatvābhyām	vacanīyatvaiḥ
Dative	vacanīyatvāya	vacanīyatvābhyām	vacanīyatvebhyaḥ
Ablative	vacanīyatvāt	vacanīyatvābhyām	vacanīyatvebhyaḥ
Genitive	vacanīyatvasya	vacanīyatvayoḥ	vacanīyatvānām
Locative	vacanīyatve	vacanīyatvayoḥ	vacanīyatveṣu

Compound vacanīyatva -

Adverb -vacanīyatvam -vacanīyatvāt