Declension table of ?pratimanvantara

Neuter	Singular	Dual	Plural
Nominative	pratimanvantaram	pratimanvantare	pratimanvantarāṇi
Vocative	pratimanvantara	pratimanvantare	pratimanvantarāṇi
Accusative	pratimanvantaram	pratimanvantare	pratimanvantarāṇi
Instrumental	pratimanvantareṇa	pratimanvantarābhyām	pratimanvantaraiḥ
Dative	pratimanvantarāya	pratimanvantarābhyām	pratimanvantarebhyaḥ
Ablative	pratimanvantarāt	pratimanvantarābhyām	pratimanvantarebhyaḥ
Genitive	pratimanvantarasya	pratimanvantarayoḥ	pratimanvantarāṇām
Locative	pratimanvantare	pratimanvantarayoḥ	pratimanvantareṣu

Compound pratimanvantara -

Adverb -pratimanvantaram -pratimanvantarāt