Declension table of ?grathna

Masculine	Singular	Dual	Plural
Nominative	grathnaḥ	grathnau	grathnāḥ
Vocative	grathna	grathnau	grathnāḥ
Accusative	grathnam	grathnau	grathnān
Instrumental	grathnena	grathnābhyām	grathnaiḥ grathnebhiḥ
Dative	grathnāya	grathnābhyām	grathnebhyaḥ
Ablative	grathnāt	grathnābhyām	grathnebhyaḥ
Genitive	grathnasya	grathnayoḥ	grathnānām
Locative	grathne	grathnayoḥ	grathneṣu

Compound grathna -

Adverb -grathnam -grathnāt