Declension table of ?hakkāra

Masculine	Singular	Dual	Plural
Nominative	hakkāraḥ	hakkārau	hakkārāḥ
Vocative	hakkāra	hakkārau	hakkārāḥ
Accusative	hakkāram	hakkārau	hakkārān
Instrumental	hakkāreṇa	hakkārābhyām	hakkāraiḥ hakkārebhiḥ
Dative	hakkārāya	hakkārābhyām	hakkārebhyaḥ
Ablative	hakkārāt	hakkārābhyām	hakkārebhyaḥ
Genitive	hakkārasya	hakkārayoḥ	hakkārāṇām
Locative	hakkāre	hakkārayoḥ	hakkāreṣu

Compound hakkāra -

Adverb -hakkāram -hakkārāt