Declension table of ?bhyastavat

Masculine	Singular	Dual	Plural
Nominative	bhyastavān	bhyastavantau	bhyastavantaḥ
Vocative	bhyastavan	bhyastavantau	bhyastavantaḥ
Accusative	bhyastavantam	bhyastavantau	bhyastavataḥ
Instrumental	bhyastavatā	bhyastavadbhyām	bhyastavadbhiḥ
Dative	bhyastavate	bhyastavadbhyām	bhyastavadbhyaḥ
Ablative	bhyastavataḥ	bhyastavadbhyām	bhyastavadbhyaḥ
Genitive	bhyastavataḥ	bhyastavatoḥ	bhyastavatām
Locative	bhyastavati	bhyastavatoḥ	bhyastavatsu

Compound bhyastavat -

Adverb -bhyastavantam