Declension table of ?rāsana

Neuter	Singular	Dual	Plural
Nominative	rāsanam	rāsane	rāsanāni
Vocative	rāsana	rāsane	rāsanāni
Accusative	rāsanam	rāsane	rāsanāni
Instrumental	rāsanena	rāsanābhyām	rāsanaiḥ
Dative	rāsanāya	rāsanābhyām	rāsanebhyaḥ
Ablative	rāsanāt	rāsanābhyām	rāsanebhyaḥ
Genitive	rāsanasya	rāsanayoḥ	rāsanānām
Locative	rāsane	rāsanayoḥ	rāsaneṣu

Compound rāsana -

Adverb -rāsanam -rāsanāt