Declension table of ?vyapya

Masculine	Singular	Dual	Plural
Nominative	vyapyaḥ	vyapyau	vyapyāḥ
Vocative	vyapya	vyapyau	vyapyāḥ
Accusative	vyapyam	vyapyau	vyapyān
Instrumental	vyapyena	vyapyābhyām	vyapyaiḥ vyapyebhiḥ
Dative	vyapyāya	vyapyābhyām	vyapyebhyaḥ
Ablative	vyapyāt	vyapyābhyām	vyapyebhyaḥ
Genitive	vyapyasya	vyapyayoḥ	vyapyānām
Locative	vyapye	vyapyayoḥ	vyapyeṣu

Compound vyapya -

Adverb -vyapyam -vyapyāt