Declension table of ?sukhitva

Neuter	Singular	Dual	Plural
Nominative	sukhitvam	sukhitve	sukhitvāni
Vocative	sukhitva	sukhitve	sukhitvāni
Accusative	sukhitvam	sukhitve	sukhitvāni
Instrumental	sukhitvena	sukhitvābhyām	sukhitvaiḥ
Dative	sukhitvāya	sukhitvābhyām	sukhitvebhyaḥ
Ablative	sukhitvāt	sukhitvābhyām	sukhitvebhyaḥ
Genitive	sukhitvasya	sukhitvayoḥ	sukhitvānām
Locative	sukhitve	sukhitvayoḥ	sukhitveṣu

Compound sukhitva -

Adverb -sukhitvam -sukhitvāt