Declension table of āstara

Neuter	Singular	Dual	Plural
Nominative	āstaram	āstare	āstarāṇi
Vocative	āstara	āstare	āstarāṇi
Accusative	āstaram	āstare	āstarāṇi
Instrumental	āstareṇa	āstarābhyām	āstaraiḥ
Dative	āstarāya	āstarābhyām	āstarebhyaḥ
Ablative	āstarāt	āstarābhyām	āstarebhyaḥ
Genitive	āstarasya	āstarayoḥ	āstarāṇām
Locative	āstare	āstarayoḥ	āstareṣu

Compound āstara -

Adverb -āstaram -āstarāt