Declension table of ?rudravrata

Neuter	Singular	Dual	Plural
Nominative	rudravratam	rudravrate	rudravratāni
Vocative	rudravrata	rudravrate	rudravratāni
Accusative	rudravratam	rudravrate	rudravratāni
Instrumental	rudravratena	rudravratābhyām	rudravrataiḥ
Dative	rudravratāya	rudravratābhyām	rudravratebhyaḥ
Ablative	rudravratāt	rudravratābhyām	rudravratebhyaḥ
Genitive	rudravratasya	rudravratayoḥ	rudravratānām
Locative	rudravrate	rudravratayoḥ	rudravrateṣu

Compound rudravrata -

Adverb -rudravratam -rudravratāt