Declension table of ?yuvāna

Neuter	Singular	Dual	Plural
Nominative	yuvānam	yuvāne	yuvānāni
Vocative	yuvāna	yuvāne	yuvānāni
Accusative	yuvānam	yuvāne	yuvānāni
Instrumental	yuvānena	yuvānābhyām	yuvānaiḥ
Dative	yuvānāya	yuvānābhyām	yuvānebhyaḥ
Ablative	yuvānāt	yuvānābhyām	yuvānebhyaḥ
Genitive	yuvānasya	yuvānayoḥ	yuvānānām
Locative	yuvāne	yuvānayoḥ	yuvāneṣu

Compound yuvāna -

Adverb -yuvānam -yuvānāt