Declension table of ?vasāra

Neuter	Singular	Dual	Plural
Nominative	vasāram	vasāre	vasārāṇi
Vocative	vasāra	vasāre	vasārāṇi
Accusative	vasāram	vasāre	vasārāṇi
Instrumental	vasāreṇa	vasārābhyām	vasāraiḥ
Dative	vasārāya	vasārābhyām	vasārebhyaḥ
Ablative	vasārāt	vasārābhyām	vasārebhyaḥ
Genitive	vasārasya	vasārayoḥ	vasārāṇām
Locative	vasāre	vasārayoḥ	vasāreṣu

Compound vasāra -

Adverb -vasāram -vasārāt