Declension table of ?vasra

Neuter	Singular	Dual	Plural
Nominative	vasram	vasre	vasrāṇi
Vocative	vasra	vasre	vasrāṇi
Accusative	vasram	vasre	vasrāṇi
Instrumental	vasreṇa	vasrābhyām	vasraiḥ
Dative	vasrāya	vasrābhyām	vasrebhyaḥ
Ablative	vasrāt	vasrābhyām	vasrebhyaḥ
Genitive	vasrasya	vasrayoḥ	vasrāṇām
Locative	vasre	vasrayoḥ	vasreṣu

Compound vasra -

Adverb -vasram -vasrāt