Declension table of ?saptabhuvana

Neuter	Singular	Dual	Plural
Nominative	saptabhuvanam	saptabhuvane	saptabhuvanāni
Vocative	saptabhuvana	saptabhuvane	saptabhuvanāni
Accusative	saptabhuvanam	saptabhuvane	saptabhuvanāni
Instrumental	saptabhuvanena	saptabhuvanābhyām	saptabhuvanaiḥ
Dative	saptabhuvanāya	saptabhuvanābhyām	saptabhuvanebhyaḥ
Ablative	saptabhuvanāt	saptabhuvanābhyām	saptabhuvanebhyaḥ
Genitive	saptabhuvanasya	saptabhuvanayoḥ	saptabhuvanānām
Locative	saptabhuvane	saptabhuvanayoḥ	saptabhuvaneṣu

Compound saptabhuvana -

Adverb -saptabhuvanam -saptabhuvanāt