Declension table of ?peṇāna

Masculine	Singular	Dual	Plural
Nominative	peṇānaḥ	peṇānau	peṇānāḥ
Vocative	peṇāna	peṇānau	peṇānāḥ
Accusative	peṇānam	peṇānau	peṇānān
Instrumental	peṇānena	peṇānābhyām	peṇānaiḥ peṇānebhiḥ
Dative	peṇānāya	peṇānābhyām	peṇānebhyaḥ
Ablative	peṇānāt	peṇānābhyām	peṇānebhyaḥ
Genitive	peṇānasya	peṇānayoḥ	peṇānānām
Locative	peṇāne	peṇānayoḥ	peṇāneṣu

Compound peṇāna -

Adverb -peṇānam -peṇānāt