Declension table of ?prasannapāda

Masculine	Singular	Dual	Plural
Nominative	prasannapādaḥ	prasannapādau	prasannapādāḥ
Vocative	prasannapāda	prasannapādau	prasannapādāḥ
Accusative	prasannapādam	prasannapādau	prasannapādān
Instrumental	prasannapādena	prasannapādābhyām	prasannapādaiḥ prasannapādebhiḥ
Dative	prasannapādāya	prasannapādābhyām	prasannapādebhyaḥ
Ablative	prasannapādāt	prasannapādābhyām	prasannapādebhyaḥ
Genitive	prasannapādasya	prasannapādayoḥ	prasannapādānām
Locative	prasannapāde	prasannapādayoḥ	prasannapādeṣu

Compound prasannapāda -

Adverb -prasannapādam -prasannapādāt