Declension table of ?dvyantara

Masculine	Singular	Dual	Plural
Nominative	dvyantaraḥ	dvyantarau	dvyantarāḥ
Vocative	dvyantara	dvyantarau	dvyantarāḥ
Accusative	dvyantaram	dvyantarau	dvyantarān
Instrumental	dvyantareṇa	dvyantarābhyām	dvyantaraiḥ dvyantarebhiḥ
Dative	dvyantarāya	dvyantarābhyām	dvyantarebhyaḥ
Ablative	dvyantarāt	dvyantarābhyām	dvyantarebhyaḥ
Genitive	dvyantarasya	dvyantarayoḥ	dvyantarāṇām
Locative	dvyantare	dvyantarayoḥ	dvyantareṣu

Compound dvyantara -

Adverb -dvyantaram -dvyantarāt