Declension table of ?urastra

Neuter	Singular	Dual	Plural
Nominative	urastram	urastre	urastrāṇi
Vocative	urastra	urastre	urastrāṇi
Accusative	urastram	urastre	urastrāṇi
Instrumental	urastreṇa	urastrābhyām	urastraiḥ
Dative	urastrāya	urastrābhyām	urastrebhyaḥ
Ablative	urastrāt	urastrābhyām	urastrebhyaḥ
Genitive	urastrasya	urastrayoḥ	urastrāṇām
Locative	urastre	urastrayoḥ	urastreṣu

Compound urastra -

Adverb -urastram -urastrāt