Declension table of ?dvisvara

Masculine	Singular	Dual	Plural
Nominative	dvisvaraḥ	dvisvarau	dvisvarāḥ
Vocative	dvisvara	dvisvarau	dvisvarāḥ
Accusative	dvisvaram	dvisvarau	dvisvarān
Instrumental	dvisvareṇa	dvisvarābhyām	dvisvaraiḥ dvisvarebhiḥ
Dative	dvisvarāya	dvisvarābhyām	dvisvarebhyaḥ
Ablative	dvisvarāt	dvisvarābhyām	dvisvarebhyaḥ
Genitive	dvisvarasya	dvisvarayoḥ	dvisvarāṇām
Locative	dvisvare	dvisvarayoḥ	dvisvareṣu

Compound dvisvara -

Adverb -dvisvaram -dvisvarāt