Declension table of ?bṛhattvan

Masculine	Singular	Dual	Plural
Nominative	bṛhattvā	bṛhattvānau	bṛhattvānaḥ
Vocative	bṛhattvan	bṛhattvānau	bṛhattvānaḥ
Accusative	bṛhattvānam	bṛhattvānau	bṛhattvanaḥ
Instrumental	bṛhattvanā	bṛhattvabhyām	bṛhattvabhiḥ
Dative	bṛhattvane	bṛhattvabhyām	bṛhattvabhyaḥ
Ablative	bṛhattvanaḥ	bṛhattvabhyām	bṛhattvabhyaḥ
Genitive	bṛhattvanaḥ	bṛhattvanoḥ	bṛhattvanām
Locative	bṛhattvani	bṛhattvanoḥ	bṛhattvasu

Compound bṛhattva -

Adverb -bṛhattvam