Declension table of ?vyastatva

Neuter	Singular	Dual	Plural
Nominative	vyastatvam	vyastatve	vyastatvāni
Vocative	vyastatva	vyastatve	vyastatvāni
Accusative	vyastatvam	vyastatve	vyastatvāni
Instrumental	vyastatvena	vyastatvābhyām	vyastatvaiḥ
Dative	vyastatvāya	vyastatvābhyām	vyastatvebhyaḥ
Ablative	vyastatvāt	vyastatvābhyām	vyastatvebhyaḥ
Genitive	vyastatvasya	vyastatvayoḥ	vyastatvānām
Locative	vyastatve	vyastatvayoḥ	vyastatveṣu

Compound vyastatva -

Adverb -vyastatvam -vyastatvāt