Declension table of ?drvanna

Masculine	Singular	Dual	Plural
Nominative	drvannaḥ	drvannau	drvannāḥ
Vocative	drvanna	drvannau	drvannāḥ
Accusative	drvannam	drvannau	drvannān
Instrumental	drvannena	drvannābhyām	drvannaiḥ drvannebhiḥ
Dative	drvannāya	drvannābhyām	drvannebhyaḥ
Ablative	drvannāt	drvannābhyām	drvannebhyaḥ
Genitive	drvannasya	drvannayoḥ	drvannānām
Locative	drvanne	drvannayoḥ	drvanneṣu

Compound drvanna -

Adverb -drvannam -drvannāt