Declension table of ?uparyāsana

Neuter	Singular	Dual	Plural
Nominative	uparyāsanam	uparyāsane	uparyāsanāni
Vocative	uparyāsana	uparyāsane	uparyāsanāni
Accusative	uparyāsanam	uparyāsane	uparyāsanāni
Instrumental	uparyāsanena	uparyāsanābhyām	uparyāsanaiḥ
Dative	uparyāsanāya	uparyāsanābhyām	uparyāsanebhyaḥ
Ablative	uparyāsanāt	uparyāsanābhyām	uparyāsanebhyaḥ
Genitive	uparyāsanasya	uparyāsanayoḥ	uparyāsanānām
Locative	uparyāsane	uparyāsanayoḥ	uparyāsaneṣu

Compound uparyāsana -

Adverb -uparyāsanam -uparyāsanāt