Declension table of ?gopatva

Neuter	Singular	Dual	Plural
Nominative	gopatvam	gopatve	gopatvāni
Vocative	gopatva	gopatve	gopatvāni
Accusative	gopatvam	gopatve	gopatvāni
Instrumental	gopatvena	gopatvābhyām	gopatvaiḥ
Dative	gopatvāya	gopatvābhyām	gopatvebhyaḥ
Ablative	gopatvāt	gopatvābhyām	gopatvebhyaḥ
Genitive	gopatvasya	gopatvayoḥ	gopatvānām
Locative	gopatve	gopatvayoḥ	gopatveṣu

Compound gopatva -

Adverb -gopatvam -gopatvāt