Declension table of ?durmaratva

Neuter	Singular	Dual	Plural
Nominative	durmaratvam	durmaratve	durmaratvāni
Vocative	durmaratva	durmaratve	durmaratvāni
Accusative	durmaratvam	durmaratve	durmaratvāni
Instrumental	durmaratvena	durmaratvābhyām	durmaratvaiḥ
Dative	durmaratvāya	durmaratvābhyām	durmaratvebhyaḥ
Ablative	durmaratvāt	durmaratvābhyām	durmaratvebhyaḥ
Genitive	durmaratvasya	durmaratvayoḥ	durmaratvānām
Locative	durmaratve	durmaratvayoḥ	durmaratveṣu

Compound durmaratva -

Adverb -durmaratvam -durmaratvāt