Declension table of ?dairghatamasa

Neuter	Singular	Dual	Plural
Nominative	dairghatamasam	dairghatamase	dairghatamasāni
Vocative	dairghatamasa	dairghatamase	dairghatamasāni
Accusative	dairghatamasam	dairghatamase	dairghatamasāni
Instrumental	dairghatamasena	dairghatamasābhyām	dairghatamasaiḥ
Dative	dairghatamasāya	dairghatamasābhyām	dairghatamasebhyaḥ
Ablative	dairghatamasāt	dairghatamasābhyām	dairghatamasebhyaḥ
Genitive	dairghatamasasya	dairghatamasayoḥ	dairghatamasānām
Locative	dairghatamase	dairghatamasayoḥ	dairghatamaseṣu

Compound dairghatamasa -

Adverb -dairghatamasam -dairghatamasāt