Declension table of ?upasargin

Neuter	Singular	Dual	Plural
Nominative	upasargi	upasargiṇī	upasargīṇi
Vocative	upasargin upasargi	upasargiṇī	upasargīṇi
Accusative	upasargi	upasargiṇī	upasargīṇi
Instrumental	upasargiṇā	upasargibhyām	upasargibhiḥ
Dative	upasargiṇe	upasargibhyām	upasargibhyaḥ
Ablative	upasargiṇaḥ	upasargibhyām	upasargibhyaḥ
Genitive	upasargiṇaḥ	upasargiṇoḥ	upasargiṇām
Locative	upasargiṇi	upasargiṇoḥ	upasargiṣu

Compound upasargi -

Adverb -upasargi