Declension table of ?yāvya

Neuter	Singular	Dual	Plural
Nominative	yāvyam	yāvye	yāvyāni
Vocative	yāvya	yāvye	yāvyāni
Accusative	yāvyam	yāvye	yāvyāni
Instrumental	yāvyena	yāvyābhyām	yāvyaiḥ
Dative	yāvyāya	yāvyābhyām	yāvyebhyaḥ
Ablative	yāvyāt	yāvyābhyām	yāvyebhyaḥ
Genitive	yāvyasya	yāvyayoḥ	yāvyānām
Locative	yāvye	yāvyayoḥ	yāvyeṣu

Compound yāvya -

Adverb -yāvyam -yāvyāt