Declension table of ?viyāsa

Masculine	Singular	Dual	Plural
Nominative	viyāsaḥ	viyāsau	viyāsāḥ
Vocative	viyāsa	viyāsau	viyāsāḥ
Accusative	viyāsam	viyāsau	viyāsān
Instrumental	viyāsena	viyāsābhyām	viyāsaiḥ viyāsebhiḥ
Dative	viyāsāya	viyāsābhyām	viyāsebhyaḥ
Ablative	viyāsāt	viyāsābhyām	viyāsebhyaḥ
Genitive	viyāsasya	viyāsayoḥ	viyāsānām
Locative	viyāse	viyāsayoḥ	viyāseṣu

Compound viyāsa -

Adverb -viyāsam -viyāsāt