Declension table of ?dviśīrṣaka

Masculine	Singular	Dual	Plural
Nominative	dviśīrṣakaḥ	dviśīrṣakau	dviśīrṣakāḥ
Vocative	dviśīrṣaka	dviśīrṣakau	dviśīrṣakāḥ
Accusative	dviśīrṣakam	dviśīrṣakau	dviśīrṣakān
Instrumental	dviśīrṣakeṇa	dviśīrṣakābhyām	dviśīrṣakaiḥ dviśīrṣakebhiḥ
Dative	dviśīrṣakāya	dviśīrṣakābhyām	dviśīrṣakebhyaḥ
Ablative	dviśīrṣakāt	dviśīrṣakābhyām	dviśīrṣakebhyaḥ
Genitive	dviśīrṣakasya	dviśīrṣakayoḥ	dviśīrṣakāṇām
Locative	dviśīrṣake	dviśīrṣakayoḥ	dviśīrṣakeṣu

Compound dviśīrṣaka -

Adverb -dviśīrṣakam -dviśīrṣakāt