Declension table of ?viśvayu

Masculine	Singular	Dual	Plural
Nominative	viśvayuḥ	viśvayū	viśvayavaḥ
Vocative	viśvayo	viśvayū	viśvayavaḥ
Accusative	viśvayum	viśvayū	viśvayūn
Instrumental	viśvayunā	viśvayubhyām	viśvayubhiḥ
Dative	viśvayave	viśvayubhyām	viśvayubhyaḥ
Ablative	viśvayoḥ	viśvayubhyām	viśvayubhyaḥ
Genitive	viśvayoḥ	viśvayvoḥ	viśvayūnām
Locative	viśvayau	viśvayvoḥ	viśvayuṣu

Compound viśvayu -

Adverb -viśvayu