Declension table of ?yathāsva

Neuter	Singular	Dual	Plural
Nominative	yathāsvam	yathāsve	yathāsvāni
Vocative	yathāsva	yathāsve	yathāsvāni
Accusative	yathāsvam	yathāsve	yathāsvāni
Instrumental	yathāsvena	yathāsvābhyām	yathāsvaiḥ
Dative	yathāsvāya	yathāsvābhyām	yathāsvebhyaḥ
Ablative	yathāsvāt	yathāsvābhyām	yathāsvebhyaḥ
Genitive	yathāsvasya	yathāsvayoḥ	yathāsvānām
Locative	yathāsve	yathāsvayoḥ	yathāsveṣu

Compound yathāsva -

Adverb -yathāsvam -yathāsvāt