Declension table of ?yauvanaka

Neuter	Singular	Dual	Plural
Nominative	yauvanakam	yauvanake	yauvanakāni
Vocative	yauvanaka	yauvanake	yauvanakāni
Accusative	yauvanakam	yauvanake	yauvanakāni
Instrumental	yauvanakena	yauvanakābhyām	yauvanakaiḥ
Dative	yauvanakāya	yauvanakābhyām	yauvanakebhyaḥ
Ablative	yauvanakāt	yauvanakābhyām	yauvanakebhyaḥ
Genitive	yauvanakasya	yauvanakayoḥ	yauvanakānām
Locative	yauvanake	yauvanakayoḥ	yauvanakeṣu

Compound yauvanaka -

Adverb -yauvanakam -yauvanakāt