Declension table of ?sampūrva

Neuter	Singular	Dual	Plural
Nominative	sampūrvam	sampūrve	sampūrvāṇi
Vocative	sampūrva	sampūrve	sampūrvāṇi
Accusative	sampūrvam	sampūrve	sampūrvāṇi
Instrumental	sampūrveṇa	sampūrvābhyām	sampūrvaiḥ
Dative	sampūrvāya	sampūrvābhyām	sampūrvebhyaḥ
Ablative	sampūrvāt	sampūrvābhyām	sampūrvebhyaḥ
Genitive	sampūrvasya	sampūrvayoḥ	sampūrvāṇām
Locative	sampūrve	sampūrvayoḥ	sampūrveṣu

Compound sampūrva -

Adverb -sampūrvam -sampūrvāt