Declension table of ?yuvāyu

Neuter	Singular	Dual	Plural
Nominative	yuvāyu	yuvāyunī	yuvāyūni
Vocative	yuvāyu	yuvāyunī	yuvāyūni
Accusative	yuvāyu	yuvāyunī	yuvāyūni
Instrumental	yuvāyunā	yuvāyubhyām	yuvāyubhiḥ
Dative	yuvāyune	yuvāyubhyām	yuvāyubhyaḥ
Ablative	yuvāyunaḥ	yuvāyubhyām	yuvāyubhyaḥ
Genitive	yuvāyunaḥ	yuvāyunoḥ	yuvāyūnām
Locative	yuvāyuni	yuvāyunoḥ	yuvāyuṣu

Compound yuvāyu -

Adverb -yuvāyu