Declension table of ?bṛhadarka

Neuter	Singular	Dual	Plural
Nominative	bṛhadarkam	bṛhadarke	bṛhadarkāṇi
Vocative	bṛhadarka	bṛhadarke	bṛhadarkāṇi
Accusative	bṛhadarkam	bṛhadarke	bṛhadarkāṇi
Instrumental	bṛhadarkeṇa	bṛhadarkābhyām	bṛhadarkaiḥ
Dative	bṛhadarkāya	bṛhadarkābhyām	bṛhadarkebhyaḥ
Ablative	bṛhadarkāt	bṛhadarkābhyām	bṛhadarkebhyaḥ
Genitive	bṛhadarkasya	bṛhadarkayoḥ	bṛhadarkāṇām
Locative	bṛhadarke	bṛhadarkayoḥ	bṛhadarkeṣu

Compound bṛhadarka -

Adverb -bṛhadarkam -bṛhadarkāt