Declension table of ?ardhāsana

Neuter	Singular	Dual	Plural
Nominative	ardhāsanam	ardhāsane	ardhāsanāni
Vocative	ardhāsana	ardhāsane	ardhāsanāni
Accusative	ardhāsanam	ardhāsane	ardhāsanāni
Instrumental	ardhāsanena	ardhāsanābhyām	ardhāsanaiḥ
Dative	ardhāsanāya	ardhāsanābhyām	ardhāsanebhyaḥ
Ablative	ardhāsanāt	ardhāsanābhyām	ardhāsanebhyaḥ
Genitive	ardhāsanasya	ardhāsanayoḥ	ardhāsanānām
Locative	ardhāsane	ardhāsanayoḥ	ardhāsaneṣu

Compound ardhāsana -

Adverb -ardhāsanam -ardhāsanāt