Declension table of ?vyāpana

Neuter	Singular	Dual	Plural
Nominative	vyāpanam	vyāpane	vyāpanāni
Vocative	vyāpana	vyāpane	vyāpanāni
Accusative	vyāpanam	vyāpane	vyāpanāni
Instrumental	vyāpanena	vyāpanābhyām	vyāpanaiḥ
Dative	vyāpanāya	vyāpanābhyām	vyāpanebhyaḥ
Ablative	vyāpanāt	vyāpanābhyām	vyāpanebhyaḥ
Genitive	vyāpanasya	vyāpanayoḥ	vyāpanānām
Locative	vyāpane	vyāpanayoḥ	vyāpaneṣu

Compound vyāpana -

Adverb -vyāpanam -vyāpanāt