Declension table of ?duravagraha

Masculine	Singular	Dual	Plural
Nominative	duravagrahaḥ	duravagrahau	duravagrahāḥ
Vocative	duravagraha	duravagrahau	duravagrahāḥ
Accusative	duravagraham	duravagrahau	duravagrahān
Instrumental	duravagraheṇa	duravagrahābhyām	duravagrahaiḥ duravagrahebhiḥ
Dative	duravagrahāya	duravagrahābhyām	duravagrahebhyaḥ
Ablative	duravagrahāt	duravagrahābhyām	duravagrahebhyaḥ
Genitive	duravagrahasya	duravagrahayoḥ	duravagrahāṇām
Locative	duravagrahe	duravagrahayoḥ	duravagraheṣu

Compound duravagraha -

Adverb -duravagraham -duravagrahāt