Declension table of ?tatpratyayatva

Neuter	Singular	Dual	Plural
Nominative	tatpratyayatvam	tatpratyayatve	tatpratyayatvāni
Vocative	tatpratyayatva	tatpratyayatve	tatpratyayatvāni
Accusative	tatpratyayatvam	tatpratyayatve	tatpratyayatvāni
Instrumental	tatpratyayatvena	tatpratyayatvābhyām	tatpratyayatvaiḥ
Dative	tatpratyayatvāya	tatpratyayatvābhyām	tatpratyayatvebhyaḥ
Ablative	tatpratyayatvāt	tatpratyayatvābhyām	tatpratyayatvebhyaḥ
Genitive	tatpratyayatvasya	tatpratyayatvayoḥ	tatpratyayatvānām
Locative	tatpratyayatve	tatpratyayatvayoḥ	tatpratyayatveṣu

Compound tatpratyayatva -

Adverb -tatpratyayatvam -tatpratyayatvāt