Declension table of ?upaśvasa

Masculine	Singular	Dual	Plural
Nominative	upaśvasaḥ	upaśvasau	upaśvasāḥ
Vocative	upaśvasa	upaśvasau	upaśvasāḥ
Accusative	upaśvasam	upaśvasau	upaśvasān
Instrumental	upaśvasena	upaśvasābhyām	upaśvasaiḥ upaśvasebhiḥ
Dative	upaśvasāya	upaśvasābhyām	upaśvasebhyaḥ
Ablative	upaśvasāt	upaśvasābhyām	upaśvasebhyaḥ
Genitive	upaśvasasya	upaśvasayoḥ	upaśvasānām
Locative	upaśvase	upaśvasayoḥ	upaśvaseṣu

Compound upaśvasa -

Adverb -upaśvasam -upaśvasāt