Declension table of ?prasannatarka

Masculine	Singular	Dual	Plural
Nominative	prasannatarkaḥ	prasannatarkau	prasannatarkāḥ
Vocative	prasannatarka	prasannatarkau	prasannatarkāḥ
Accusative	prasannatarkam	prasannatarkau	prasannatarkān
Instrumental	prasannatarkeṇa	prasannatarkābhyām	prasannatarkaiḥ prasannatarkebhiḥ
Dative	prasannatarkāya	prasannatarkābhyām	prasannatarkebhyaḥ
Ablative	prasannatarkāt	prasannatarkābhyām	prasannatarkebhyaḥ
Genitive	prasannatarkasya	prasannatarkayoḥ	prasannatarkāṇām
Locative	prasannatarke	prasannatarkayoḥ	prasannatarkeṣu

Compound prasannatarka -

Adverb -prasannatarkam -prasannatarkāt