Declension table of upasevana

Neuter	Singular	Dual	Plural
Nominative	upasevanam	upasevane	upasevanāni
Vocative	upasevana	upasevane	upasevanāni
Accusative	upasevanam	upasevane	upasevanāni
Instrumental	upasevanena	upasevanābhyām	upasevanaiḥ
Dative	upasevanāya	upasevanābhyām	upasevanebhyaḥ
Ablative	upasevanāt	upasevanābhyām	upasevanebhyaḥ
Genitive	upasevanasya	upasevanayoḥ	upasevanānām
Locative	upasevane	upasevanayoḥ	upasevaneṣu

Compound upasevana -

Adverb -upasevanam -upasevanāt