Declension table of ?dṛḍhavalka

Masculine	Singular	Dual	Plural
Nominative	dṛḍhavalkaḥ	dṛḍhavalkau	dṛḍhavalkāḥ
Vocative	dṛḍhavalka	dṛḍhavalkau	dṛḍhavalkāḥ
Accusative	dṛḍhavalkam	dṛḍhavalkau	dṛḍhavalkān
Instrumental	dṛḍhavalkena	dṛḍhavalkābhyām	dṛḍhavalkaiḥ dṛḍhavalkebhiḥ
Dative	dṛḍhavalkāya	dṛḍhavalkābhyām	dṛḍhavalkebhyaḥ
Ablative	dṛḍhavalkāt	dṛḍhavalkābhyām	dṛḍhavalkebhyaḥ
Genitive	dṛḍhavalkasya	dṛḍhavalkayoḥ	dṛḍhavalkānām
Locative	dṛḍhavalke	dṛḍhavalkayoḥ	dṛḍhavalkeṣu

Compound dṛḍhavalka -

Adverb -dṛḍhavalkam -dṛḍhavalkāt