Declension table of ?apastana

Masculine	Singular	Dual	Plural
Nominative	apastanaḥ	apastanau	apastanāḥ
Vocative	apastana	apastanau	apastanāḥ
Accusative	apastanam	apastanau	apastanān
Instrumental	apastanena	apastanābhyām	apastanaiḥ apastanebhiḥ
Dative	apastanāya	apastanābhyām	apastanebhyaḥ
Ablative	apastanāt	apastanābhyām	apastanebhyaḥ
Genitive	apastanasya	apastanayoḥ	apastanānām
Locative	apastane	apastanayoḥ	apastaneṣu

Compound apastana -

Adverb -apastanam -apastanāt