Declension table of ?bāndhuka

Masculine	Singular	Dual	Plural
Nominative	bāndhukaḥ	bāndhukau	bāndhukāḥ
Vocative	bāndhuka	bāndhukau	bāndhukāḥ
Accusative	bāndhukam	bāndhukau	bāndhukān
Instrumental	bāndhukena	bāndhukābhyām	bāndhukaiḥ
Dative	bāndhukāya	bāndhukābhyām	bāndhukebhyaḥ
Ablative	bāndhukāt	bāndhukābhyām	bāndhukebhyaḥ
Genitive	bāndhukasya	bāndhukayoḥ	bāndhukānām
Locative	bāndhuke	bāndhukayoḥ	bāndhukeṣu

Compound bāndhuka -

Adverb -bāndhukam -bāndhukāt