Declension table of ?upanyasta

Neuter	Singular	Dual	Plural
Nominative	upanyastam	upanyaste	upanyastāni
Vocative	upanyasta	upanyaste	upanyastāni
Accusative	upanyastam	upanyaste	upanyastāni
Instrumental	upanyastena	upanyastābhyām	upanyastaiḥ
Dative	upanyastāya	upanyastābhyām	upanyastebhyaḥ
Ablative	upanyastāt	upanyastābhyām	upanyastebhyaḥ
Genitive	upanyastasya	upanyastayoḥ	upanyastānām
Locative	upanyaste	upanyastayoḥ	upanyasteṣu

Compound upanyasta -

Adverb -upanyastam -upanyastāt