Declension table of ?dvādaśīvrata

Neuter	Singular	Dual	Plural
Nominative	dvādaśīvratam	dvādaśīvrate	dvādaśīvratāni
Vocative	dvādaśīvrata	dvādaśīvrate	dvādaśīvratāni
Accusative	dvādaśīvratam	dvādaśīvrate	dvādaśīvratāni
Instrumental	dvādaśīvratena	dvādaśīvratābhyām	dvādaśīvrataiḥ
Dative	dvādaśīvratāya	dvādaśīvratābhyām	dvādaśīvratebhyaḥ
Ablative	dvādaśīvratāt	dvādaśīvratābhyām	dvādaśīvratebhyaḥ
Genitive	dvādaśīvratasya	dvādaśīvratayoḥ	dvādaśīvratānām
Locative	dvādaśīvrate	dvādaśīvratayoḥ	dvādaśīvrateṣu

Compound dvādaśīvrata -

Adverb -dvādaśīvratam -dvādaśīvratāt