Declension table of ?svāpana

Masculine	Singular	Dual	Plural
Nominative	svāpanaḥ	svāpanau	svāpanāḥ
Vocative	svāpana	svāpanau	svāpanāḥ
Accusative	svāpanam	svāpanau	svāpanān
Instrumental	svāpanena	svāpanābhyām	svāpanaiḥ svāpanebhiḥ
Dative	svāpanāya	svāpanābhyām	svāpanebhyaḥ
Ablative	svāpanāt	svāpanābhyām	svāpanebhyaḥ
Genitive	svāpanasya	svāpanayoḥ	svāpanānām
Locative	svāpane	svāpanayoḥ	svāpaneṣu

Compound svāpana -

Adverb -svāpanam -svāpanāt