Declension table of tribhuvana

Neuter	Singular	Dual	Plural
Nominative	tribhuvanam	tribhuvane	tribhuvanāni
Vocative	tribhuvana	tribhuvane	tribhuvanāni
Accusative	tribhuvanam	tribhuvane	tribhuvanāni
Instrumental	tribhuvanena	tribhuvanābhyām	tribhuvanaiḥ
Dative	tribhuvanāya	tribhuvanābhyām	tribhuvanebhyaḥ
Ablative	tribhuvanāt	tribhuvanābhyām	tribhuvanebhyaḥ
Genitive	tribhuvanasya	tribhuvanayoḥ	tribhuvanānām
Locative	tribhuvane	tribhuvanayoḥ	tribhuvaneṣu

Compound tribhuvana -

Adverb -tribhuvanam -tribhuvanāt