Declension table of ?asaṃvatsara

Masculine	Singular	Dual	Plural
Nominative	asaṃvatsaraḥ	asaṃvatsarau	asaṃvatsarāḥ
Vocative	asaṃvatsara	asaṃvatsarau	asaṃvatsarāḥ
Accusative	asaṃvatsaram	asaṃvatsarau	asaṃvatsarān
Instrumental	asaṃvatsareṇa	asaṃvatsarābhyām	asaṃvatsaraiḥ asaṃvatsarebhiḥ
Dative	asaṃvatsarāya	asaṃvatsarābhyām	asaṃvatsarebhyaḥ
Ablative	asaṃvatsarāt	asaṃvatsarābhyām	asaṃvatsarebhyaḥ
Genitive	asaṃvatsarasya	asaṃvatsarayoḥ	asaṃvatsarāṇām
Locative	asaṃvatsare	asaṃvatsarayoḥ	asaṃvatsareṣu

Compound asaṃvatsara -

Adverb -asaṃvatsaram -asaṃvatsarāt