Declension table of vatsara

Masculine	Singular	Dual	Plural
Nominative	vatsaraḥ	vatsarau	vatsarāḥ
Vocative	vatsara	vatsarau	vatsarāḥ
Accusative	vatsaram	vatsarau	vatsarān
Instrumental	vatsareṇa	vatsarābhyām	vatsaraiḥ vatsarebhiḥ
Dative	vatsarāya	vatsarābhyām	vatsarebhyaḥ
Ablative	vatsarāt	vatsarābhyām	vatsarebhyaḥ
Genitive	vatsarasya	vatsarayoḥ	vatsarāṇām
Locative	vatsare	vatsarayoḥ	vatsareṣu

Compound vatsara -

Adverb -vatsaram -vatsarāt