Declension table of ?somavāsara

Masculine	Singular	Dual	Plural
Nominative	somavāsaraḥ	somavāsarau	somavāsarāḥ
Vocative	somavāsara	somavāsarau	somavāsarāḥ
Accusative	somavāsaram	somavāsarau	somavāsarān
Instrumental	somavāsareṇa	somavāsarābhyām	somavāsaraiḥ somavāsarebhiḥ
Dative	somavāsarāya	somavāsarābhyām	somavāsarebhyaḥ
Ablative	somavāsarāt	somavāsarābhyām	somavāsarebhyaḥ
Genitive	somavāsarasya	somavāsarayoḥ	somavāsarāṇām
Locative	somavāsare	somavāsarayoḥ	somavāsareṣu

Compound somavāsara -

Adverb -somavāsaram -somavāsarāt