Declension table of ?ucchvasana

Neuter	Singular	Dual	Plural
Nominative	ucchvasanam	ucchvasane	ucchvasanāni
Vocative	ucchvasana	ucchvasane	ucchvasanāni
Accusative	ucchvasanam	ucchvasane	ucchvasanāni
Instrumental	ucchvasanena	ucchvasanābhyām	ucchvasanaiḥ
Dative	ucchvasanāya	ucchvasanābhyām	ucchvasanebhyaḥ
Ablative	ucchvasanāt	ucchvasanābhyām	ucchvasanebhyaḥ
Genitive	ucchvasanasya	ucchvasanayoḥ	ucchvasanānām
Locative	ucchvasane	ucchvasanayoḥ	ucchvasaneṣu

Compound ucchvasana -

Adverb -ucchvasanam -ucchvasanāt