Declension table of ?prasannarasa

Neuter	Singular	Dual	Plural
Nominative	prasannarasam	prasannarase	prasannarasāni
Vocative	prasannarasa	prasannarase	prasannarasāni
Accusative	prasannarasam	prasannarase	prasannarasāni
Instrumental	prasannarasena	prasannarasābhyām	prasannarasaiḥ
Dative	prasannarasāya	prasannarasābhyām	prasannarasebhyaḥ
Ablative	prasannarasāt	prasannarasābhyām	prasannarasebhyaḥ
Genitive	prasannarasasya	prasannarasayoḥ	prasannarasānām
Locative	prasannarase	prasannarasayoḥ	prasannaraseṣu

Compound prasannarasa -

Adverb -prasannarasam -prasannarasāt