Declension table of ?dvayāvin

Neuter	Singular	Dual	Plural
Nominative	dvayāvi	dvayāvinī	dvayāvīni
Vocative	dvayāvin dvayāvi	dvayāvinī	dvayāvīni
Accusative	dvayāvi	dvayāvinī	dvayāvīni
Instrumental	dvayāvinā	dvayāvibhyām	dvayāvibhiḥ
Dative	dvayāvine	dvayāvibhyām	dvayāvibhyaḥ
Ablative	dvayāvinaḥ	dvayāvibhyām	dvayāvibhyaḥ
Genitive	dvayāvinaḥ	dvayāvinoḥ	dvayāvinām
Locative	dvayāvini	dvayāvinoḥ	dvayāviṣu

Compound dvayāvi -

Adverb -dvayāvi