Declension table of ?puruvrata

Neuter	Singular	Dual	Plural
Nominative	puruvratam	puruvrate	puruvratāni
Vocative	puruvrata	puruvrate	puruvratāni
Accusative	puruvratam	puruvrate	puruvratāni
Instrumental	puruvratena	puruvratābhyām	puruvrataiḥ
Dative	puruvratāya	puruvratābhyām	puruvratebhyaḥ
Ablative	puruvratāt	puruvratābhyām	puruvratebhyaḥ
Genitive	puruvratasya	puruvratayoḥ	puruvratānām
Locative	puruvrate	puruvratayoḥ	puruvrateṣu

Compound puruvrata -

Adverb -puruvratam -puruvratāt