Declension table of ?pūna

Masculine	Singular	Dual	Plural
Nominative	pūnaḥ	pūnau	pūnāḥ
Vocative	pūna	pūnau	pūnāḥ
Accusative	pūnam	pūnau	pūnān
Instrumental	pūnena	pūnābhyām	pūnaiḥ pūnebhiḥ
Dative	pūnāya	pūnābhyām	pūnebhyaḥ
Ablative	pūnāt	pūnābhyām	pūnebhyaḥ
Genitive	pūnasya	pūnayoḥ	pūnānām
Locative	pūne	pūnayoḥ	pūneṣu

Compound pūna -

Adverb -pūnam -pūnāt