Declension table of ?vratasāra

Masculine	Singular	Dual	Plural
Nominative	vratasāraḥ	vratasārau	vratasārāḥ
Vocative	vratasāra	vratasārau	vratasārāḥ
Accusative	vratasāram	vratasārau	vratasārān
Instrumental	vratasāreṇa	vratasārābhyām	vratasāraiḥ vratasārebhiḥ
Dative	vratasārāya	vratasārābhyām	vratasārebhyaḥ
Ablative	vratasārāt	vratasārābhyām	vratasārebhyaḥ
Genitive	vratasārasya	vratasārayoḥ	vratasārāṇām
Locative	vratasāre	vratasārayoḥ	vratasāreṣu

Compound vratasāra -

Adverb -vratasāram -vratasārāt