Declension table of ?dṛḍhagranthi

Masculine	Singular	Dual	Plural
Nominative	dṛḍhagranthiḥ	dṛḍhagranthī	dṛḍhagranthayaḥ
Vocative	dṛḍhagranthe	dṛḍhagranthī	dṛḍhagranthayaḥ
Accusative	dṛḍhagranthim	dṛḍhagranthī	dṛḍhagranthīn
Instrumental	dṛḍhagranthinā	dṛḍhagranthibhyām	dṛḍhagranthibhiḥ
Dative	dṛḍhagranthaye	dṛḍhagranthibhyām	dṛḍhagranthibhyaḥ
Ablative	dṛḍhagrantheḥ	dṛḍhagranthibhyām	dṛḍhagranthibhyaḥ
Genitive	dṛḍhagrantheḥ	dṛḍhagranthyoḥ	dṛḍhagranthīnām
Locative	dṛḍhagranthau	dṛḍhagranthyoḥ	dṛḍhagranthiṣu

Compound dṛḍhagranthi -

Adverb -dṛḍhagranthi