Declension table of ?vatsāra

Masculine	Singular	Dual	Plural
Nominative	vatsāraḥ	vatsārau	vatsārāḥ
Vocative	vatsāra	vatsārau	vatsārāḥ
Accusative	vatsāram	vatsārau	vatsārān
Instrumental	vatsāreṇa	vatsārābhyām	vatsāraiḥ vatsārebhiḥ
Dative	vatsārāya	vatsārābhyām	vatsārebhyaḥ
Ablative	vatsārāt	vatsārābhyām	vatsārebhyaḥ
Genitive	vatsārasya	vatsārayoḥ	vatsārāṇām
Locative	vatsāre	vatsārayoḥ	vatsāreṣu

Compound vatsāra -

Adverb -vatsāram -vatsārāt