Declension table of ?saphatva

Neuter	Singular	Dual	Plural
Nominative	saphatvam	saphatve	saphatvāni
Vocative	saphatva	saphatve	saphatvāni
Accusative	saphatvam	saphatve	saphatvāni
Instrumental	saphatvena	saphatvābhyām	saphatvaiḥ
Dative	saphatvāya	saphatvābhyām	saphatvebhyaḥ
Ablative	saphatvāt	saphatvābhyām	saphatvebhyaḥ
Genitive	saphatvasya	saphatvayoḥ	saphatvānām
Locative	saphatve	saphatvayoḥ	saphatveṣu

Compound saphatva -

Adverb -saphatvam -saphatvāt