Declension table of ?samantara

Masculine	Singular	Dual	Plural
Nominative	samantaraḥ	samantarau	samantarāḥ
Vocative	samantara	samantarau	samantarāḥ
Accusative	samantaram	samantarau	samantarān
Instrumental	samantareṇa	samantarābhyām	samantaraiḥ samantarebhiḥ
Dative	samantarāya	samantarābhyām	samantarebhyaḥ
Ablative	samantarāt	samantarābhyām	samantarebhyaḥ
Genitive	samantarasya	samantarayoḥ	samantarāṇām
Locative	samantare	samantarayoḥ	samantareṣu

Compound samantara -

Adverb -samantaram -samantarāt