Declension table of ?dvipatnīka

Masculine	Singular	Dual	Plural
Nominative	dvipatnīkaḥ	dvipatnīkau	dvipatnīkāḥ
Vocative	dvipatnīka	dvipatnīkau	dvipatnīkāḥ
Accusative	dvipatnīkam	dvipatnīkau	dvipatnīkān
Instrumental	dvipatnīkena	dvipatnīkābhyām	dvipatnīkaiḥ dvipatnīkebhiḥ
Dative	dvipatnīkāya	dvipatnīkābhyām	dvipatnīkebhyaḥ
Ablative	dvipatnīkāt	dvipatnīkābhyām	dvipatnīkebhyaḥ
Genitive	dvipatnīkasya	dvipatnīkayoḥ	dvipatnīkānām
Locative	dvipatnīke	dvipatnīkayoḥ	dvipatnīkeṣu

Compound dvipatnīka -

Adverb -dvipatnīkam -dvipatnīkāt