Declension table of ?aṣṭārca

Neuter	Singular	Dual	Plural
Nominative	aṣṭārcam	aṣṭārce	aṣṭārcāni
Vocative	aṣṭārca	aṣṭārce	aṣṭārcāni
Accusative	aṣṭārcam	aṣṭārce	aṣṭārcāni
Instrumental	aṣṭārcena	aṣṭārcābhyām	aṣṭārcaiḥ
Dative	aṣṭārcāya	aṣṭārcābhyām	aṣṭārcebhyaḥ
Ablative	aṣṭārcāt	aṣṭārcābhyām	aṣṭārcebhyaḥ
Genitive	aṣṭārcasya	aṣṭārcayoḥ	aṣṭārcānām
Locative	aṣṭārce	aṣṭārcayoḥ	aṣṭārceṣu

Compound aṣṭārca -

Adverb -aṣṭārcam -aṣṭārcāt