Declension table of ?dīrghakaṇṭaka

Masculine	Singular	Dual	Plural
Nominative	dīrghakaṇṭakaḥ	dīrghakaṇṭakau	dīrghakaṇṭakāḥ
Vocative	dīrghakaṇṭaka	dīrghakaṇṭakau	dīrghakaṇṭakāḥ
Accusative	dīrghakaṇṭakam	dīrghakaṇṭakau	dīrghakaṇṭakān
Instrumental	dīrghakaṇṭakena	dīrghakaṇṭakābhyām	dīrghakaṇṭakaiḥ dīrghakaṇṭakebhiḥ
Dative	dīrghakaṇṭakāya	dīrghakaṇṭakābhyām	dīrghakaṇṭakebhyaḥ
Ablative	dīrghakaṇṭakāt	dīrghakaṇṭakābhyām	dīrghakaṇṭakebhyaḥ
Genitive	dīrghakaṇṭakasya	dīrghakaṇṭakayoḥ	dīrghakaṇṭakānām
Locative	dīrghakaṇṭake	dīrghakaṇṭakayoḥ	dīrghakaṇṭakeṣu

Compound dīrghakaṇṭaka -

Adverb -dīrghakaṇṭakam -dīrghakaṇṭakāt