Declension table of ?dvisahasra

Neuter	Singular	Dual	Plural
Nominative	dvisahasram	dvisahasre	dvisahasrāṇi
Vocative	dvisahasra	dvisahasre	dvisahasrāṇi
Accusative	dvisahasram	dvisahasre	dvisahasrāṇi
Instrumental	dvisahasreṇa	dvisahasrābhyām	dvisahasraiḥ
Dative	dvisahasrāya	dvisahasrābhyām	dvisahasrebhyaḥ
Ablative	dvisahasrāt	dvisahasrābhyām	dvisahasrebhyaḥ
Genitive	dvisahasrasya	dvisahasrayoḥ	dvisahasrāṇām
Locative	dvisahasre	dvisahasrayoḥ	dvisahasreṣu

Compound dvisahasra -

Adverb -dvisahasram -dvisahasrāt