Declension table of ?sugantva

Neuter	Singular	Dual	Plural
Nominative	sugantvam	sugantve	sugantvāni
Vocative	sugantva	sugantve	sugantvāni
Accusative	sugantvam	sugantve	sugantvāni
Instrumental	sugantvena	sugantvābhyām	sugantvaiḥ
Dative	sugantvāya	sugantvābhyām	sugantvebhyaḥ
Ablative	sugantvāt	sugantvābhyām	sugantvebhyaḥ
Genitive	sugantvasya	sugantvayoḥ	sugantvānām
Locative	sugantve	sugantvayoḥ	sugantveṣu

Compound sugantva -

Adverb -sugantvam -sugantvāt